369 Motor Management Relay
GE
Digital Energy
369 Motor Management Relay
Instruction Manual
369 Revision: 3.62
Manual P/N: 1601-0077-C2
GE Publication Number: GEK-106288Y
*1601-0077-C2*
Copyright © 2015 GE Multilin Inc.. All rights reserved.
GE Multilin 369 Motor Management Relay instruction manual for revision 3.62.
369 Motor Management Relay, is a registered trademark of GE Multilin Inc.
The contents of this manual are the property of GE Multilin Inc. This
documentation is furnished on license and may not be reproduced in whole or
in part without the permission of GE Multilin. The content of this manual is for
informational use only and is subject to change without notice.
Part numbers contained in this manual are subject to change without notice,
and should therefore be verified by GE Multilin before ordering.
Part number: 1601-0077-C2 (November 2015)
Note
GENERAL SAFETY PRECAUTIONS
• The use of appropriate Safety shoes (Omega) safety gloves, safety
glasses and protective clothing are recommended during equipment
installation, maintenance and service of the equipment.
• Failure to observe and follow the instructions provided in the equipment
manual(s) could cause irreversible damage to the equipment and could
lead to property damage, personal injury and/or death.
• Before attempting to use the equipment, it is important that all danger
and caution indicators are reviewed.
• If the equipment is used in a manner not specified by the manufacturer
or functions abnormally, proceed with caution. Otherwise, the
protection provided by the equipment may be impaired and can result
in impaired operation and injury.
• Caution: Hazardous voltages can cause shock, burns or death.
• Installation/service personnel must be familiar with general device test
practices, electrical awareness and safety precautions must be
followed.
• Before performing visual inspections, tests, or periodic maintenance on
this device or associated circuits, isolate or disconnect all hazardous live
circuits and sources of electric power.
• Failure to shut equipment off prior to removing the power connections
could expose you to dangerous voltages causing injury or death.
• All recommended equipment that should be grounded and must have a
reliable and uncompromised grounding path for safety purposes,
protection against electromagnetic interference and proper device
operation.
• Equipment grounds should be bonded together and connected to the
facility’s main ground system for primary power.
• Keep all ground leads as short as possible.
• At all times, equipment ground terminal must be grounded during
device operation and service.
• In addition to the safety precautions mentioned all electrical
connections made must respect the applicable local jurisdiction
electrical code.
• LED transmitters are classified as IEC 60825-1 Accessible Emission Limit
(AEL) Class 1M. Class 1M devices are considered safe to the unaided eye.
Do not view directly with optical instruments.
• This product is rated to Class A emissions levels and is to be used in
Utility, Substation Industrial environments. Not to be used near
electronic devices rated for Class B levels.
• This product requires an external disconnect to isolate the mains
voltage supply.
• Ensure that the protective earth (PE) terminal is suited with a
recommended wire size of 10 awg minimum wire size.
• CT’s must be shorted prior to working on CT circuits on the 369.
Table of Contents
1: INTRODUCTION
ORDERING ........................................................................................................................................... 1-1
GENERAL OVERVIEW ........................................................................................................... 1-1
ORDERING ............................................................................................................................ 1-2
ACCESSORIES ....................................................................................................................... 1-3
FIRMWARE HISTORY ............................................................................................................ 1-3
PC PROGRAM (SOFTWARE) HISTORY ............................................................................... 1-4
369 RELAY FUNCTIONAL SUMMARY ................................................................................ 1-5
RELAY LABEL DEFINITION ................................................................................................... 1-8
2: PRODUCT
DESCRIPTION
OVERVIEW ........................................................................................................................................... 2-1
GUIDEFORM SPECIFICATIONS ............................................................................................ 2-1
METERED QUANTITIES ........................................................................................................ 2-2
PROTECTION FEATURES ...................................................................................................... 2-2
ADDITIONAL FEATURES ....................................................................................................... 2-4
SPECIFICATIONS ............................................................................................................................... 2-5
INPUTS .................................................................................................................................. 2-5
OUTPUTS ............................................................................................................................... 2-7
METERING ............................................................................................................................. 2-8
COMMUNICATIONS .............................................................................................................. 2-9
PROTECTION ELEMENTS ...................................................................................................... 2-10
MONITORING ELEMENTS .................................................................................................... 2-13
CONTROL ELEMENTS ........................................................................................................... 2-14
ENVIRONMENTAL SPECIFICATIONS .................................................................................... 2-14
LONG-TERM STORAGE ........................................................................................................ 2-15
APPROVALS/CERTIFICATION ............................................................................................... 2-15
TYPE TESTS .......................................................................................................................... 2-16
PRODUCTION TESTS ............................................................................................................ 2-16
3: INSTALLATION
MECHANICAL INSTALLATION ..................................................................................................... 3-1
MECHANICAL INSTALLATION .............................................................................................. 3-1
TERMINAL IDENTIFICATION ......................................................................................................... 3-2
369 RELAY TERMINAL LIST ................................................................................................ 3-3
269 TO 369 RELAY CONVERSION TERMINAL LIST ........................................................ 3-5
MTM TO 369 RELAY CONVERSION TERMINAL LIST ...................................................... 3-8
MPM TO 369 RELAY CONVERSION TERMINAL LIST ...................................................... 3-9
TERMINAL LAYOUT .............................................................................................................. 3-10
ELECTRICAL INSTALLATION ......................................................................................................... 3-10
TYPICAL WIRING DIAGRAM ................................................................................................ 3-10
TYPICAL WIRING .................................................................................................................. 3-10
CONTROL POWER ................................................................................................................ 3-12
PHASE CURRENT (CT) INPUTS ........................................................................................... 3-12
GROUND CURRENT INPUTS ............................................................................................... 3-13
ZERO SEQUENCE GROUND CT PLACEMENT .................................................................... 3-14
PHASE VOLTAGE (VT/PT) INPUTS ..................................................................................... 3-14
BACKSPIN VOLTAGE INPUTS .............................................................................................. 3-15
RTD INPUTS ......................................................................................................................... 3-16
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
TOC–i
DIGITAL INPUTS ................................................................................................................... 3-16
ANALOG OUTPUTS .............................................................................................................. 3-17
REMOTE DISPLAY ................................................................................................................. 3-17
OUTPUT RELAYS .................................................................................................................. 3-18
RS485 COMMUNICATIONS ................................................................................................ 3-19
TYPICAL TWO-SPEED (LOW SPEED/HIGH SPEED) MOTOR WIRING ............................ 3-21
TYPICAL MOTOR FORWARD/REVERSE WIRING ............................................................... 3-23
REMOTE RTD MODULE (RRTD) .................................................................................................... 3-24
MECHANICAL INSTALLATION .............................................................................................. 3-24
ELECTRICAL INSTALLATION ................................................................................................. 3-26
CT INSTALLATION ............................................................................................................................. 3-26
PHASE CT INSTALLATION ................................................................................................... 3-27
5 AMP GROUND CT INSTALLATION .................................................................................. 3-28
HGF (50:0.025) GROUND CT INSTALLATION ............................................................... 3-29
4: USER INTERFACES
TOC–ii
FACEPLATE INTERFACE ................................................................................................................. 4-1
DISPLAY ................................................................................................................................. 4-1
LED INDICATORS ................................................................................................................. 4-1
RS232 PROGRAM PORT .................................................................................................... 4-2
KEYPAD ................................................................................................................................. 4-2
SETPOINT ENTRY .................................................................................................................. 4-3
ENERVISTA 369 SETUP INTERFACE .......................................................................................... 4-3
HARDWARE AND SOFTWARE REQUIREMENTS ................................................................. 4-3
INSTALLING ENERVISTA 369 SETUP ................................................................................. 4-4
CONNECTING ENERVISTA 369 SETUP TO THE RELAY ...................................................... 4-6
CONFIGURING SERIAL COMMUNICATIONS ....................................................................... 4-6
USING THE QUICK CONNECT FEATURE ............................................................................ 4-8
CONFIGURING ETHERNET COMMUNICATIONS ................................................................. 4-8
CONNECTING TO THE RELAY .............................................................................................. 4-10
WORKING WITH SETPOINTS AND SETPOINT FILES ........................................................... 4-12
ENGAGING A DEVICE ........................................................................................................... 4-12
ENTERING SETPOINTS ......................................................................................................... 4-12
FILE SUPPORT ...................................................................................................................... 4-13
USING SETPOINTS FILES ..................................................................................................... 4-14
UPGRADING RELAY FIRMWARE ................................................................................................. 4-26
DESCRIPTION ........................................................................................................................ 4-26
SAVING SETPOINTS TO A FILE ............................................................................................ 4-26
LOADING NEW FIRMWARE ................................................................................................. 4-26
ADVANCED ENERVISTA 369 SETUP FEATURES ................................................................... 4-28
TRIGGERED EVENTS ............................................................................................................. 4-28
TRENDING ............................................................................................................................. 4-28
WAVEFORM CAPTURE (TRACE MEMORY) ......................................................................... 4-29
MOTOR START DATA LOGGER ........................................................................................... 4-32
DATA LOGGER ...................................................................................................................... 4-32
MOTOR HEALTH REPORT ................................................................................................... 4-38
PHASORS .............................................................................................................................. 4-38
EVENT RECORDER ................................................................................................................ 4-40
MODBUS USER MAP ........................................................................................................... 4-41
VIEWING ACTUAL VALUES .................................................................................................. 4-41
USING ENERVISTA VIEWPOINT WITH THE 369 RELAY ..................................................... 4-42
PLUG AND PLAY EXAMPLE ................................................................................................. 4-42
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
5: SETPOINTS
OVERVIEW ........................................................................................................................................... 5-1
SETPOINTS MAIN MENU ..................................................................................................... 5-1
S1 369 SETUP .................................................................................................................................... 5-4
SETPOINT ACCESS ............................................................................................................... 5-4
DISPLAY PREFERENCES ....................................................................................................... 5-5
369 COMMUNICATIONS ..................................................................................................... 5-6
REAL TIME CLOCK ............................................................................................................... 5-9
WAVEFORM CAPTURE ......................................................................................................... 5-10
DATA LOGGER ...................................................................................................................... 5-11
EVENT RECORDS .................................................................................................................. 5-12
MESSAGE SCRATCHPAD ...................................................................................................... 5-12
DEFAULT MESSAGES ........................................................................................................... 5-13
CLEAR/PRESET DATA .......................................................................................................... 5-14
MODIFY OPTIONS ................................................................................................................ 5-15
FACTORY SERVICE ............................................................................................................... 5-15
S2 SYSTEM SETUP ............................................................................................................................ 5-15
DESCRIPTION ........................................................................................................................ 5-15
CT/VT SETUP ...................................................................................................................... 5-16
MONITORING SETUP ........................................................................................................... 5-18
BLOCK FUNCTIONS ............................................................................................................. 5-23
OUTPUT RELAY SETUP ........................................................................................................ 5-24
CONTROL FUNCTIONS ........................................................................................................ 5-25
S3 OVERLOAD PROTECTION ....................................................................................................... 5-34
DESCRIPTION ........................................................................................................................ 5-34
THERMAL MODEL ................................................................................................................ 5-35
OVERLOAD CURVES ............................................................................................................ 5-37
OVERLOAD ALARM .............................................................................................................. 5-47
S4 CURRENT ELEMENTS ............................................................................................................... 5-47
DESCRIPTION ........................................................................................................................ 5-47
SHORT CIRCUIT .................................................................................................................... 5-47
MECHANICAL JAM ............................................................................................................... 5-48
UNDERCURRENT .................................................................................................................. 5-49
CURRENT UNBALANCE ....................................................................................................... 5-50
GROUND FAULT ................................................................................................................... 5-51
GROUND TRIP TIME EXTENSION ....................................................................................... 5-53
S5 MOTOR START/INHIBITS ......................................................................................................... 5-53
DESCRIPTION ........................................................................................................................ 5-53
ACCELERATION TRIP ............................................................................................................ 5-54
START INHIBITS .................................................................................................................... 5-55
BACKSPIN DETECTION ........................................................................................................ 5-56
S6 RTD TEMPERATURE ................................................................................................................... 5-57
DESCRIPTION ........................................................................................................................ 5-57
LOCAL RTD PROTECTION ................................................................................................... 5-57
REMOTE RTD PROTECTION ................................................................................................ 5-59
OPEN RTD ALARM .............................................................................................................. 5-61
SHORT/LOW TEMP RTD ALARM ....................................................................................... 5-62
LOSS OF RRTD COMMS ALARM ....................................................................................... 5-63
S7 VOLTAGE ELEMENTS ................................................................................................................ 5-63
DESCRIPTION ........................................................................................................................ 5-63
UNDERVOLTAGE ................................................................................................................... 5-63
OVERVOLTAGE ...................................................................................................................... 5-64
PHASE REVERSAL ................................................................................................................. 5-65
UNDERFREQUENCY .............................................................................................................. 5-67
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
TOC–iii
OVERFREQUENCY ................................................................................................................. 5-68
S8 POWER ELEMENTS .................................................................................................................... 5-68
DESCRIPTION ........................................................................................................................ 5-68
LEAD POWER FACTOR ........................................................................................................ 5-70
LAG POWER FACTOR .......................................................................................................... 5-70
POSITIVE REACTIVE POWER ............................................................................................... 5-71
NEGATIVE REACTIVE POWER ............................................................................................. 5-72
UNDERPOWER ...................................................................................................................... 5-73
REVERSE POWER ................................................................................................................. 5-74
S9 DIGITAL INPUTS .......................................................................................................................... 5-74
DIGITAL INPUT FUNCTIONS ................................................................................................ 5-74
SPARE SWITCH ..................................................................................................................... 5-77
EMERGENCY RESTART ......................................................................................................... 5-78
DIFFERENTIAL SWITCH ........................................................................................................ 5-78
SPEED SWITCH ..................................................................................................................... 5-79
REMOTE RESET ..................................................................................................................... 5-80
S10 ANALOG OUTPUTS ................................................................................................................. 5-80
ANALOG OUTPUTS .............................................................................................................. 5-80
ANALOG OUTPUT SCALING CHANGE ............................................................................... 5-82
S11 369 TESTING ............................................................................................................................. 5-83
TEST OUTPUT RELAYS ......................................................................................................... 5-83
TEST ANALOG OUTPUTS ..................................................................................................... 5-84
S12 TWO-SPEED MOTOR .............................................................................................................. 5-84
DESCRIPTION ........................................................................................................................ 5-84
SPEED 2 OVERLOAD CURVES ............................................................................................ 5-85
SPEED 2 UNDERCURRENT .................................................................................................. 5-87
SPEED 2 ACCELERATION .................................................................................................... 5-88
6: ACTUAL VALUES
TOC–iv
OVERVIEW ........................................................................................................................................... 6-1
ACTUAL VALUES MAIN MENU ........................................................................................... 6-1
A1 STATUS ........................................................................................................................................... 6-3
MOTOR STATUS ................................................................................................................... 6-3
LAST TRIP DATA ................................................................................................................... 6-4
DATA LOGGER ...................................................................................................................... 6-4
DIAGNOSTIC MESSAGES ..................................................................................................... 6-5
START BLOCK STATUS ........................................................................................................ 6-5
DIGITAL INPUT STATUS ....................................................................................................... 6-6
OUTPUT RELAY STATUS ...................................................................................................... 6-7
REAL TIME CLOCK ............................................................................................................... 6-7
FIELDBUS SPECIFICATION STATUS .................................................................................... 6-7
A2 METERING DATA ........................................................................................................................ 6-7
CURRENT METERING ........................................................................................................... 6-8
VOLTAGE METERING ........................................................................................................... 6-8
POWER METERING .............................................................................................................. 6-9
BACKSPIN METERING .......................................................................................................... 6-9
LOCAL RTD .......................................................................................................................... 6-10
REMOTE RTD ....................................................................................................................... 6-10
OVERALL STATOR RTD ....................................................................................................... 6-11
DEMAND METERING ............................................................................................................ 6-11
PHASORS .............................................................................................................................. 6-12
A3 LEARNED DATA .......................................................................................................................... 6-13
DESCRIPTION ........................................................................................................................ 6-13
MOTOR DATA ....................................................................................................................... 6-14
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
LOCAL RTD MAXIMUMS ..................................................................................................... 6-15
REMOTE RTD MAXIMUMS .................................................................................................. 6-16
A4 STATISTICAL DATA .................................................................................................................... 6-16
TRIP COUNTERS ................................................................................................................... 6-16
MOTOR STATISTICS ............................................................................................................. 6-18
A5 EVENT RECORD .......................................................................................................................... 6-18
EVENT RECORDS .................................................................................................................. 6-18
MODEL INFORMATION ........................................................................................................ 6-20
FIRMWARE VERSION ........................................................................................................... 6-20
7: APPLICATIONS
269-369 COMPARISON ................................................................................................................. 7-1
369 AND 269PLUS COMPARISON ................................................................................... 7-1
369 FAQS ............................................................................................................................................. 7-2
FREQUENTLY ASKED QUESTIONS (FAQS) ........................................................................ 7-2
369 DO’S AND DONT’S .................................................................................................................. 7-5
DO’S AND DONT’S ............................................................................................................... 7-5
CT SPECIFICATION AND SELECTION ........................................................................................ 7-8
CT SPECIFICATION ............................................................................................................... 7-8
CT SELECTION ..................................................................................................................... 7-9
PROGRAMMING EXAMPLE ........................................................................................................... 7-11
PROGRAMMING EXAMPLE ................................................................................................... 7-11
APPLICATIONS ................................................................................................................................... 7-17
MOTOR STATUS DETECTION .............................................................................................. 7-17
SELECTION OF COOL TIME CONSTANTS ........................................................................... 7-18
THERMAL MODEL ................................................................................................................ 7-20
RTD BIAS FEATURE ............................................................................................................ 7-21
THERMAL CAPACITY USED CALCULATION ........................................................................ 7-22
START INHIBIT ...................................................................................................................... 7-24
TWO-PHASE CT CONFIGURATION .................................................................................... 7-26
GROUND FAULT DETECTION ON UNGROUNDED SYSTEMS ........................................... 7-28
RTD CIRCUITRY ................................................................................................................... 7-29
REDUCED RTD LEAD NUMBER APPLICATION ................................................................. 7-29
TWO WIRE RTD LEAD COMPENSATION .......................................................................... 7-31
AUTO TRANSFORMER STARTER WIRING .......................................................................... 7-31
8: TESTING
TEST SETUP ......................................................................................................................................... 8-1
INTRODUCTION ..................................................................................................................... 8-1
SECONDARY INJECTION TEST SETUP ................................................................................ 8-2
HARDWARE FUNCTIONAL TESTING ......................................................................................... 8-2
PHASE CURRENT ACCURACY TEST .................................................................................... 8-2
VOLTAGE INPUT ACCURACY TEST ..................................................................................... 8-3
GROUND (1 A / 5 A) ACCURACY TEST ............................................................................ 8-3
50:0.025 GROUND ACCURACY TEST .............................................................................. 8-4
RTD ACCURACY TEST ......................................................................................................... 8-5
DIGITAL INPUTS ................................................................................................................... 8-6
ANALOG OUTPUTS .............................................................................................................. 8-7
OUTPUT RELAYS .................................................................................................................. 8-8
ADDITIONAL FUNCTIONAL TESTING ....................................................................................... 8-8
OVERLOAD CURVE TEST ..................................................................................................... 8-9
POWER MEASUREMENT TEST ............................................................................................ 8-10
VOLTAGE PHASE REVERSAL TEST ...................................................................................... 8-10
SHORT CIRCUIT TEST .......................................................................................................... 8-12
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
TOC–v
A: REVISIONS
CHANGE NOTES ................................................................................................................................ A-1
REVISION HISTORY .............................................................................................................. A-1
WARRANTY ......................................................................................................................................... A-8
WARRANTY INFORMATION ................................................................................................. A-8
INDEX: INDEX
TOC–vi
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
GE
Digital Energy
369 Motor Management Relay
Chapter 1: Introduction
Introduction
1.1
Ordering
1.1.1
General Overview
The 369 Motor Management Relay is a digital relay that provides protection and
monitoring for three phase motors and their associated mechanical systems. A unique
feature of the 369 Relay is its ability to ‘learn’ individual motor parameters and to adapt
itself to each application. Values such as motor inrush current, cooling rates and
acceleration time may be used to improve the 369 Relay’s protective capabilities.
The 369 Relay offers optimum motor protection where other relays cannot, by using the
FlexCurve™ custom overload curve, or one of the fifteen standard curves.
The 369 Relay has one RS232 front panel port and three RS485 rear ports. The Modbus RTU
protocol is standard to all ports. Setpoints can be entered via the front keypad or by using
the EnerVista 369 Setup software and a computer. Status, actual values and
troubleshooting information are also available via the front panel display or via
communications.
As an option, the 369 Relay can individually monitor up to 12 RTDs. These can be from the
stator, bearings, ambient or driven equipment. The type of RTD used is software selectable.
Optionally available as an accessory is the remote RTD module which can be linked to the
369 Relay via a fibre optic or RS485 connection.
The optional metering package provides VT inputs for voltage and power elements. It also
provides metering of V, kW, kvar, kVA, PF, Hz, and MWhrs. Three additional user
configurable analog outputs are included with this option along with one analog output
included as part of the base unit.
The Back-Spin Detection (B) option enables the 369 Relay to detect the flow reversal of a
pump motor and enable timely and safe motor restarting.
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
1–1
ORDERING
CHAPTER 1: INTRODUCTION
All 369 Relay options are available when ordering the relay from the factory. Field
upgrades are only available for the relay when the required hardware is installed in the
relay from the factory. Field upgrades are via an option enabling passcode available from
GE Multilin, which is unique to each relay and option. Any hardware modifications made to
the relay in the field will void the product warranty and will not be supported by GE Multilin.
1.1.2
Ordering
Select the basic model and the desired features from the selection guide below:
Table 1–1: 369 Relay Order Codes
369
369
*
*
*
*
*
*
*
|
|
|
|
|
|
|
HI
LO
|
|
|
|
|
|
|
|
|
|
|
|
R
0
|
|
|
|
|
|
|
|
|
|
M
B
0
|
|
|
|
|
|
|
|
|
|
|
|
F
0
|
|
|
|
|
|
E
P
P1
D
0
|
|
|
|
|
|
|
|
|
|
H
0
|
|
E
0
1.
NoteNotes:
NOTE
Base unit (no RTD)
50-300 VDC / 60-265 VAC control power
20-60 VDC / 20-48 VAC control power
Optional 12 RTD inputs (built-in)
No optional RTD inputs
Optional metering package
Optional backspin detection (incl. metering)
No optional metering or backspin detection
Optional Fiber Optic Port
No optional Fiber Optic Port
Optional Modbus/TCP protocol interface
Optional Profibus-DP protocol interface
Optional Profibus-DPV1 protocol interface
Optional DeviceNet protocol interface
No optional protocol interfaces
Harsh environment option
No Harsh environment option
Enhanced diagnostics with Enhanced faceplate
No Enhanced diagnostics with Basic faceplate
One Analog Output is available with the 369 base model. The other three Analog
Outputs can be obtained by purchasing the metering or backspin options.
The control power (HI or LO) must be specified with all orders. If a feature is not
required, a 0 must be placed in the order code. All order codes have 10 digits. The 369
is available in a non-drawout version only.
Examples: 369-HI-R-0-0-0-0-E: 369 with HI voltage control power and 12 RTD
inputs, and enhanced diagnostics
369-LO-0-M-0-0-0-E: 369 relay with LO voltage control power and metering
option, and enhanced diagnotics
2.
1–2
Features available only in Enhanced option (E)
•
Enhanced faceplate with motor status indicators
•
Motor Health Report
•
Enhanced learned data
•
Motor Start Data Logger
•
Enhanced event recorder
•
Security audit trail events
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
CHAPTER 1: INTRODUCTION
1.1.3
ORDERING
Accessories
EnerVista 369 Setup software: Setup and monitoring software provided free with each
relay.
1.1.4
RRTD:
Remote RTD Module. Connects to the 369 Relay via a fibre optic or
RS485 connection. Allows remote metering and programming for up
to 12 RTDs.
F485:
Communications converter between RS232 and RS485 / fibre optic.
Interfaces a PC to the relay.
CT:
50, 75, 100, 150, 200, 300, 350, 400, 500, 600, 750, 1000 (1 A or 5 A
secondaries)
HGF:
Ground CTs (50:0.025) used for sensitive earth fault detection on high
resistance grounded systems.
515:
Blocking and test module. Provides effective trip blocking and relay
isolation.
DEMO:
Metal carry case in which 369 is mounted.
FPC15:
Remote faceplate cable, 15'.
Firmware History
Table 1–2: Firmware History (Sheet 1 of 2)
FIRMWARE REVISION
BRIEF DESCRIPTION OF CHANGE
RELEASE DATE
53CMB110.000
Production Release
June 14, 1999
53CMB111.000
Changes to Backspin Detection algorithm
June 24, 1999
53CMB112.000
Changes to Backspin Detection algorithm
July 2, 1999
53CMB120.000
Capability to work with the Remote RTD
module
October 15, 1999
53CMB130.000
Improvements to the Remote RTD
communications
January 3, 2000
53CMB140.000
Changes to Backspin Detection algorithm
and improved RS232 communications
March 27, 2000
53CMB145.000
Minor firmware changes
June 9, 2000
53CMB160.000
Profibus protocol, waveform capture,
phasor display, single analog output,
demand power and current, power
consumption
October 12, 2000
53CMB161.000
Minor firmware changes
October 19, 2000
53CMB162.000
Minor firmware changes
November 30,
2000
53CMB170.000
Autorestart feature added
February 9, 2001
53CMB180.000
Modbus/TCP feature added
June 15, 2001
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
1–3
ORDERING
CHAPTER 1: INTRODUCTION
Table 1–2: Firmware History (Sheet 2 of 2)
1.1.5
FIRMWARE REVISION
BRIEF DESCRIPTION OF CHANGE
RELEASE DATE
53CMB190.000
Number of Event Recorders increased to
250; Hottest Overall RTD value added
November 23,
2001
53CMB201.000
Added Starter Failure, MWhrs as analog
output parameter, and Motor Load
Averaging feature.
April 16, 2004
53CMB210.000
Added support for variable frequency
drives; minor changes to Modbus TCP.
November 5, 2004
53CMB220.000
Implementation of DeviceNet protocol and
starter operation monitor.
April 11, 2005
53CMB230.000
Implemented Profibus DPV1, Force
Outputs and Protection Blocking.
September 19,
2005
53CMB240.000
Custom Curve enhancement, increase
range from 0 to 32767 to 0 to 65534.
November 21,
2005
53CMB250.000
Implementation of start control relay timer
setting for reduced voltage starting,
additional Modbus address added for
starts/hour lockout time remaining,
correction to date and time Broadcast
command Modbus addresses, fix for
latched resets with multiple local/remote
assigned relays, fix for repeated “Motor
Stopped” and “Motor Running” events.
April 28, 2006
53CMC310.000
Profibus loss of trip, trip contact seal in
undervoltage auto restart, Motor Health
Report, Enhanced learned data, motor
start data logger, enhanced event recorder,
security audit trail events, DeviceNet
enhanced polling.
June 7, 2007
53CMC320.000
2-speed motor feature, Datalogger
feature, speed of last trip display, latched
trip and alarm note.
March 20, 2008
53CMC330.000
Added Ethernet Loss of Comms Trip.
May 7, 2009
53CMC340.000
Added DeviceNet Loss of Comms Trip.
July 7, 2010
PC Program (Software) History
Table 1–3: Software History
1–4
PC
PROGRAM
REVISION
BRIEF DESCRIPTION OF CHANGES
RELEASE DATE
1.10
Production Release
June 14, 1999
1.20
Capability to work with the Remote RTD module
October 15, 1999
1.30
Capability to communicate effectively with version
1.30 firmware
January 3, 2000
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
CHAPTER 1: INTRODUCTION
ORDERING
Table 1–3: Software History
1.1.6
PC
PROGRAM
REVISION
BRIEF DESCRIPTION OF CHANGES
RELEASE DATE
1.40
Changes made for new firmware release
March 27, 2000
1.45
Changes made for new firmware release
June 9, 2000
1.60
Profibus protocol, waveform capture, phasor
display, single analog output, demand power and
current, power consumption
October 23, 2000
1.70
Changes made for new firmware release
February 9, 2001
1.80
Changes made for new firmware release
June 7, 2001
1.90
Changes made for new firmware release
November 23, 2001
2.00
Changes made for new firmware release
September 9, 2003
3.01
New features and enhancements
August 16, 2004
3.11
Added support for firmware revision 2.1x
November 16, 2004
3.20
Changes made for firmware revision 2.2x
April 13, 2005
3.30
Changes made for firmware revision 2.3x
September 19,
2005
3.40
Changes made for firmware revision 2.4x
November 25, 2005
3.50
Changes made for firmware revision 2.5x
May 15, 2006
3.70
Changes made for firmware revision 3.1x
June 7, 2007
3.80
Changes made for firmware revision 3.2x
March 20, 2008
3.90
Changes made for firmware revision 3.3x
May 7, 2009
4.00
Changes made for firmware revision 3.4x
July 7, 2010
369 Relay Functional Summary
The front view for all 369 Relay models is shown below, along with the rear view showing
the Profibus port, the Modbus/TCP port, and the DeviceNet port.
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
1–5
ORDERING
CHAPTER 1: INTRODUCTION
DISPLAY
40 Character alpha-numeric
LCD display for viewing
actual values, causes
of alarms and trips, and
programming setpoints
STATUS INDICATORS
4 LEDs indicate when an
output is activated. When
an LED is lit, the cause of
the output relay operation
will be shown on the display.
SERVICE LED indicates that a
self-diagnostic test failed, or
that the 369 is in Test Mode .
STATUS INDICATORS
LEDs indicate if motor is
stopped, starting, running,
overloaded or locked out
HELP KEY
Help key can be pressed at
any time to provide additional
information
Rugged, corrosion and
flame retardent case.
KEYPAD
Used to select the display
of actual values, causes of
alarms, causes of trips, fault
diagnosis, and to program
setpoints
CONTROL POWER
HI: 50-300 VDC/60-265 VAC
LO: 20-60 VDC / 20-48 VAC
4 OUTPUT RELAYS
Programmable alarm and trip
conditions activated by
programmable setpoints,
switch input, remote
communication control
Customer Accessible
Fuse
320
6
DIGITAL INPUTS
12 RTD INPUTS ( R )
Field selectable type
PROFIBUS-DP ( P )
PROFIBUS-DPV1 ( P1 )
3 x RS485 Ports
3 Independent modbus
channels
1 ANALOG OUTPUT ( BASE UNIT )
3 ANALOG OUTPUTS (M,B)
FIBER OPTIC DATA LINK ( F )
For harsh enviroments and or
hook up to RRTD
BACKSPIN DETECTION ( B )
20mV to 480V RMS
CURRENT INPUTS
3 Phase CT inputs
5A, 1A, taps
VOLTAGE INPUTS ( M )
0-240V wye or delta VT
connections.
GROUND CT INPUTS
5A, 1A and 50:0.25 taps
840702BM.CDR
FIGURE 1–1: Front and Rear View
1–6
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
CHAPTER 1: INTRODUCTION
ORDERING
FIGURE 1–2: DeviceNet Model
FIGURE 1–3: Rear View (Modbus/TCP Model)
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
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ORDERING
1.1.7
CHAPTER 1: INTRODUCTION
Relay Label Definition
1
2
g
3
4
6
MAXIMUM CONTACT RATING
250 VAC
8A
RESISTIVE
1/4 HP 125 VAC 1/2 HP 250 VAC
CE
UL
OPTIONS
MODEL: 369-HI-R-B-F-P-0
SERIAL No: M53C07000001
12 RTDs:
FIRMWARE: 53CMC320.000
BACKSPIN
INPUT POWER:
FIBER OPTIC PORT
50-300 VDC
60-265 VAC
485mA MAX.
50/60Hz or DC
POLLUTION DEGREE: 2 IP CODE: 50X
PROFIBUS
MOD:
INSULATIVE VOLTAGE: 2
NONE
OVERVOLTAGE CATAGORY: II
7
8
9
10
11
12
840350AB.CDR
1.
The 369 Relay order code at the time of leaving the factory.
2.
The serial number of the 369 Relay.
3.
The firmware installed at the factory. Note that this may no longer be the currently
installed firmware as it may have been upgraded in the field. The current firmware revision can be checked in the actual values section of the 369 Relay.
4.
Specifications for the output relay contacts.
5.
Certifications the 369 Relay conforms with or has been approved to.
6.
Factory installed options. These are based on the order code. Note that the 369 Relay
may have had options upgraded in the field. The actual values section of the 369 can
be checked to verify this.
7.
Control power ratings for the 369 Relay as ordered. Based on the HI/LO rating from
the order code.
8.
Pollution degree.
9.
Overvoltage category.
10. IP code.
11. Modification number for any factory-ordered mods.
12. Insulative voltage rating.
1–8
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
GE
Digital Energy
369 Motor Management Relay
Chapter 2: Product Description
Product Description
2.1
Overview
2.1.1
Guideform Specifications
Motor protection and management shall be provided by a digital relay. Protective functions include:
•
phase overload standard curves (51)
•
overload by custom programmable curve (51)
•
I2t modeling (49)
•
current unbalance / single phase detection (46)
•
starts per hour and time between starts
•
short circuit (50)
•
ground fault (50G/50N 51G/51N)
•
mechanical jam / stall
•
two-speed motor protection
Optional functions include:
•
under / overvoltage (27/59)
•
phase reversal (47)
•
underpower (37)
•
power factor (55)
•
stator / bearing overtemperature with twelve (12) independent RTD inputs (49/38)
•
backspin detection
Management functions include:
•
statistical data
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
2–1
OVERVIEW
CHAPTER 2: PRODUCT DESCRIPTION
•
pre-trip data (last 40 events)
•
ability to learn, display and integrate critical parameters to maximize motor
protection
•
a keypad with 40 character display
•
flash memory
The relay is capable of displaying important metering functions, including phase voltages,
kilowatts, kvars, power factor, frequency and MWhr. In addition, undervoltage and low
power factor alarm and trip levels are field programmable. The communications interface
include one front RS232 port and three independent rear RS485 ports with supporting PC
software, thus allowing easy setpoint programming, local retrieval of information and
flexibility in communication with SCADA and engineering workstations.
2.1.2
2.1.3
2–2
Metered Quantities
METERED QUANTITY
UNITS
Phase Currents and Current Demand
Amps
Motor Load
× FLA
Unbalance Current
%
Ground Current
Amps
OPTION
Input Switch Status
Open / Closed
Relay Output Status
(De) Energized
RTD Temperature
°C or °F
R
Backspin Frequency
Hz
B
Phase/Line Voltages
Volts
M
Frequency
Hz
M
Power Factor
lead / lag
M
Real Power and Real Power Demand
Watts
M
Reactive Power and Reactive Power Demand
Vars
M
Apparent Power and Apparent Power Demand
VA
M
Real Power Consumption
MWh
M
Reactive Power Consumption/Generation
±Mvarh
M
Protection Features
ANSI/
IEEE
DEVICE
PROTECTION FEATURES
14
Speed Switch
27
Undervoltage
OPTION
TRIP
ALARM
BLOCK
START
•
•
•
M
•
37
Undercurrent / Underpower
/M
•
•
38
Bearing RTD
R or RRTD
•
•
46
Current Unbalance
•
•
47
Voltage Phase Reversal
M
•
49
Stator RTD
R or RRTD
•
•
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
CHAPTER 2: PRODUCT DESCRIPTION
OVERVIEW
ANSI/
IEEE
DEVICE
PROTECTION FEATURES
50
Short Circuit & Backup
•
50G/51G
Ground Fault & Ground Fault
Backup
•
•
51
Overload
•
•
55
Power Factor
M
•
•
59
Overvoltage
M
•
•
66
Starts per Hour/Time
Between Starts
74
Alarm
81
Over/Under Frequency
86
Lockout
87
Differential Switch
OPTION
ALARM
BLOCK
START
•
•
•
M
•
•
•
•
General Switch
Reactive Power
TRIP
M
•
•
•
•
Thermal Capacity
•
Start Inhibit (thermal capacity
available)
•
Restart Block (Backspin
Timer)
•
Mechanical Jam
•
Acceleration Timer
•
•
•
Ambient RTD
R or RRTD
•
Short/Low temp RTD
R or RRTD
•
Broken/Open RTD
R or RRTD
•
Loss of RRTD
Communications
RRTD
•
Trip Counter
•
Self Test/Service
•
Backspin Detection
B
Current Demand
•
•
kW Demand
M
•
kvar Demand
M
•
kVA Demand
M
•
Starter Failure
•
Reverse Power
M
Undervoltage Autorestart
M or B
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
•
2–3
OVERVIEW
2.1.4
CHAPTER 2: PRODUCT DESCRIPTION
Additional Features
FEATURE
OPTION
Modbus/TCP protocol Ethernet
interface
E
Profibus-DP rear communication port
P
Profibus-DPV1 rear communication
port
P1
DeviceNet protocol interface
D
User Definable Baud Rate (120019200)
Flash Memory for easy firmware
updates
Front RS232 communication port
Rear RS485 communication port
Rear fiber optic port
F
RTD type is user definable
R or RRTD
4 User Definable Analog Outputs
(0 to 1 mA, 0 to 20 mA, 4 to 20 mA)
M
Windows based PC program for
setting up and monitoring
FIGURE 2–1: Single Line Diagram
2–4
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
CHAPTER 2: PRODUCT DESCRIPTION
2.2
SPECIFICATIONS
Specifications
2.2.1
Inputs
CONTROL POWER
LO range (nominal): .......................................DC: 24 to 48 V DC/AC (at 50/60 Hz)
HI range (nominal): ........................................DC: 110 to 250 V DC
AC: 100 to 240 V AC at 50/60 Hz
Power:..................................................................nominal: 20 VA; maximum: 65 VA
Holdup:................................................................non-failsafe trip: 200 ms; failsafe trip: 100 ms
FUSE
T 3.15 A H 250 V (5 × 20 mm)
Timelag high breaking capacity
PHASE CURRENT INPUTS (CT)
CT input (rated): ...............................................1 A and 5 A secondary
CT primary: ........................................................1 to 5000 A
Range:
for 50/60 Hz nominal frequency: ......0.05 to 20 × CT primary amps
for variable frequency: ...........................0.1 to 20 × CT primary amps
Full Scale: ...........................................................20 × CT primary amps or 65535 A maximum
Frequency:.........................................................20 to 100 Hz
Conversion: .......................................................True RMS, 1.04 ms/sample
Accuracy:
at ≤ 2 × CT:....................................................±0.5% of 2 × CT for 50/60 Hz nominal freq.
±1.0% of 2 × CT for variable frequency (for sinusoidal
waveforms)
at > 2 × CT: ....................................................±1.0% of 20 × CT for 50/60 Hz nominal freq.
±3.0% of 12 × CT or less for variable frequency (for
sinusoidal waveforms)
PHASE CT BURDEN
PHASE CT
1A
5A
INPUT (A)
BURDEN
VA
(Ω)
1
5
20
5
25
100
0.03
0.64
11.7
0.07
1.71
31
0.03
0.03
0.03
0.003
0.003
0.003
PHASE CT CURRENT WITHSTAND
PHASE CT
1A
5A
WITHSTAND TIME
1s
2s
continuous
100 × CT
100 × CT
3 × CT
3 × CT
40 × CT
40 × CT
DIGITAL / SWITCH INPUTS
Inputs:..................................................................6 optically isolated
Input type:..........................................................Dry Contact (< 800 Ω)
Function:.............................................................Programmable
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
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SPECIFICATIONS
CHAPTER 2: PRODUCT DESCRIPTION
GROUND CURRENT INPUT (GF CT)
CT Input (rated):...............................................1 A/5 A secondary and 50:0.025
CT Primary: ........................................................1 to 5000 A (1 A/5 A)
Range: .................................................................0.1 to 1.0 × CT primary (1 A/5 A)
0.05 to 25.0 A (50:0.025)
Full Scale: ...........................................................1.0 × CT primary (1 A/5 A)
25 A (50:0.025)
Frequency: .........................................................20 to 100 Hz
Conversion:........................................................True RMS 1.04ms/sample
Accuracy at 50/60 Hz:
for 1 A/5 A: .........................................±1.0% of full scale (1 A/5 A)
for 50:0.025........................................±0.07 A at <1 A
±0.20 A at <25 A
Accuracy at variable frequency:
for 1 A tap:.....................................................±1.5% for 40 to 100 Hz
±2.5% for 20 to 39 Hz
for 5 A tap:.....................................................±2% for 40 to 100 Hz
±3% for 20 to 39 Hz
for 50:0.025: .................................................±0.2 A at <1 A
±0.6 A at <25 A
GROUND CT BURDEN
GROUND CT
1A
5A
50:0.025
INPUT (A)
1
5
20
5
25
100
0.025
0.1
0.5
BURDEN
VA
(Ω)
0.04
0.78
6.79
0.07
1.72
25
0.24
2.61
37.5
0.036
0.031
0.017
0.003
0.003
0.003
384
261
150
GROUND CT CURRENT WITHSTAND
GROUND CT
WITHSTAND TIME
1s
2s
continuous
1A
5A
50:0.025
100 × CT
100 × CT
10 A
3 × CT
3 × CT
150 mA
40 × CT
40 × CT
5A
PHASE/LINE VOLTAGE INPUT (VT) (OPTION M)
VT ratio: ...............................................................1.00 to 240.00:1 in steps of 0.01
VT secondary:...................................................240 V AC (full scale)
Range:..................................................................0.05 to 1.00 × full scale
Frequency: .........................................................20 to 100 Hz
Conversion:........................................................True RMS 1.04 ms/sample
Accuracy: ...............................................±2.5% of full scale for ≤ 200 V at 20 to 39 Hz
±1% of full scale for 12 to 240 V at > 40 Hz
Burden: ................................................................>200 kΩ
Max. continuous: ............................................280 V AC
2–6
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
CHAPTER 2: PRODUCT DESCRIPTION
SPECIFICATIONS
BSD INPUTS (OPTION B)
Frequency: ........................................................1 to 120 Hz
Dynamic BSD range: ....................................20 mV to 480 V RMS
Accuracy: ...............................................±0.02 Hz
Burden:................................................................>200 kΩ
RTD INPUTS (OPTION R)
Wire Type: ..........................................................3 wire
Sensor Type: .....................................................100 Ω platinum (DIN 43760), 100 Ω nickel, 120 Ω nickel,
10 Ω copper
RTD sensing current: ....................................3 mA
Range:..................................................................–40 to 200°C or –40 to 392°F
Accuracy: ...............................................±2°C or ±4°F
Lead resistance:..............................................25 Ω max. per lead for Pt and Ni type;
3 Ω max. per lead for Cu type
Isolation: .............................................................36 Vpk
2.2.2
Outputs
ANALOG OUTPUTS (OPTION M)
PROGRAMMABLE
OUTPUT
0 to 1 mA
0 to 20 mA 4 to 20 mA
MAX LOAD
2400 Ω
600 Ω
600 Ω
MAX OUTPUT
1.01 mA
20.2 mA
20.2 mA
Accuracy: ...............................................±1% of full scale
Isolation: .............................................................fully isolated active source
OUTPUT RELAYS
RESISTIVE LOAD INDUCTIVE LOAD
(pf = 1)
(pf = 0.4)(L/R – 7ms)
RATED LOAD
CARRY CURRENT
MAX SWITCHING
CAPACITY
MAX SWITCHING V
MAX SWITCHING I
OPERATE TIME
CONTACT MATERIAL
8 A at 250 V AC 3.5 A at 250 V AC
8 A at 30 V DC
3.5 A at 30 V DC
8A
2000 VA
875 VA
240 W
170 W
380 V AC; 125 V DC
8A
3.5 A
<10 ms (5 ms typical)
silver alloy
This equipment is suitable for use in Class 1, Div 2, Groups A, B, C, D or Non-Hazardous
Locations only if MOD502 is ordered (for North America only).
Hazardous Location – Class 1, Div 2 output rating if MOD502 is ordered: 240 V, 3 A max,
as per UL1604. The contact rating is only for Make and carry operations, and shall not
be used for breaking DC current.
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
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SPECIFICATIONS
CHAPTER 2: PRODUCT DESCRIPTION
Explosion Hazard – Substitution of components may impair suitability for Class 1, Div 2.
Explosion Hazard – Do not disconnect equipment unless power has been switched off
or the area is known to be Non-Hazardous.
2.2.3
Metering
POWER METERING (OPTION M)
PARAMETER
ACCURACY
RESOLUTION
RANGE
kW
kvar
kVA
kWh
MWh
±kvarh
±Mvarh
Power Factor
Frequency
kW Demand
kvar Demand
kVA Demand
Amp Demand
±2%
±2%
±2%
±2%
±2%
±2%
±2%
±1%
±0.02 Hz
±2%
±2%
±2%
±2%
1 kW
1 kvar
1 kVA
1 kWh
0.001 MWh
1 kvarh
0.001 Mvarh
0.01
0.01 Hz
1 kW
1 kvar
1 kVA
1A
±32000
±32000
0 to 65000
0 to 65535999
0.000 to 65535.999
0 to 65535999
0.000 to 65535.999
–0.99 to 1.00
20.00 to 100.00
0 to 32000
0 to 32000
0 to 65000
0 to 65535
(FULL SCALE)
EVENT RECORD
Capacity:.............................................................last 512 events
Triggers: ..............................................................trip, inhibit, power fail, alarms, self test,
waveform capture
WAVEFORM CAPTURE
Length:.................................................................3 buffers containing 16 cycles of all current and voltage
channels
Trigger position: ..............................................1 to 100% pre-trip to post-trip
Trigger: ...............................................................trip, manually via communications or digital input
MOTOR START DATA LOGGER
Length: ...............................................................6 Buffers containing 30 seconds of motor start data.
Trigger: ...............................................................Motor Start Status.
Trigger position: .............................................1-second pre-trigger duration.
Logging rate: ...................................................1 sample/200ms.
2–8
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
CHAPTER 2: PRODUCT DESCRIPTION
2.2.4
SPECIFICATIONS
Communications
FRONT PORT
Type: .....................................................................RS232, non-isolated
Baud rate: ..........................................................4800 to 19200
Protocol:..............................................................Modbus® RTU
BACK PORTS (3)
Type: .....................................................................RS485
Baud rate: ..........................................................1200 to 19200
Protocol:..............................................................Modbus® RTU
36V isolation (together)
PROFIBUS (OPTIONS P AND P1)
Type: .....................................................................RS485
Baud rate: ..........................................................1200 baud to 12 Mbaud
Protocol:..............................................................Profibus-DP
Profibus-DPV1
Connector Type:..............................................DB9 Female
MODBUS/TCP ETHERNET (OPTION E)
Connector type:...............................................RJ45
Protocol:..............................................................Modbus/TCP
DEVICENET (OPTION D)
DeviceNet CONFORMANCE TESTED™
Connector type:...............................................5-pin linear DeviceNet plug (phoenix type)
Baud rate: ..........................................................125, 250, and 500 kbps
Protocol:..............................................................DeviceNet
Bus-Side Current Draw:...............................85mA (Typical), 100mA (Max)
FIBER OPTIC PORT (OPTION F)
Optional use:.....................................................RTD remote module hookup
Baud rate: ..........................................................1200 to 19200
Protocol:..............................................................Modbus® RTU
Fiber sizes: .........................................................50/125, 62.5/125, 100/140, and 200 μm
Emitter fiber type: ..........................................820 nm LED, multimode
Link power budget:
Transmit power: ...........................................–20 dBm
Received sensitivity: ...................................–30 dBm
Power budget: ...............................................10 dB
Maximum optical input power: ..............–7.6 dBm
Typical link distance: ...................................1.65 km
Typical link distance is based upon the following assumptions for system loss. As actual
losses vary between installations, the distance covered will vary.
Note
NOTE
Connector loss: ..............................................2 dB
Fiber loss: ..........................................................3 dB/km
Splice loss: ........................................................One splice every 2 km at 0.05 dB loss/splice
System margin: ..............................................3 dB additional loss added to calculations to compensate
for all other losses
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
2–9
SPECIFICATIONS
CHAPTER 2: PRODUCT DESCRIPTION
FIELDBUS LOSS OF COMMUNICATION
Pickup: .................................................................No communication
Time delay: ........................................................0.25 to 10 sec in steps of 0.25 sec
Timing accuracy:...................................±250 ms for Profibus
±300 ms for Ethernet
±250 ms for DeviceNet
2.2.5
Protection Elements
51 OVERLOAD/STALL/THERMAL MODEL
Curve Shape: ....................................................1 to 15 standard, custom
Curve Biasing: ..................................................unbalance, temperature, hot/cold ratio,
cool time constants
Pickup Level: .....................................................1.01 to 1.25 × FLA
Pickup Accuracy: ............................................as per phase current inputs
Dropout Level:..................................................96 to 98% of pickup
Timing Accuracy:............................................±100 ms or ±2% of total trip time
THERMAL CAPACITY ALARM
Pickup Level: .....................................................1 to 100% TC in steps of 1
Pickup Accuracy: ............................................±2%
Dropout Level:..................................................96 to 98% of pickup
Timing Accuracy:............................................±100 ms
OVERLOAD ALARM
Pickup Level: .....................................................1.01 to 1.50 × FLA in steps of 0.01
Pickup Accuracy: ............................................as per phase current inputs
Dropout Level:..................................................96 to 98% of pickup
Time Delay:........................................................0.1 to 60.0 s in steps of 0.1
Timing Accuracy:............................................±100 ms or ±2% of total trip time
50 SHORT CIRCUIT
Pickup Level: .....................................................2.0 to 20.0 × CT in steps of 0.1
Pickup Accuracy: ............................................as per phase current inputs
Dropout Level:..................................................96 to 98% of pickup
Time Delay:........................................................0 to 255.00 s in steps of 0.01 s
Backup Delay: ..................................................0.10 to 255.00 s in steps of 0.01 s
Timing Accuracy:............................................+50 ms for delays <50 ms
±100 ms or ±0.5% of total trip time
MECHANICAL JAM
Pickup Level: .....................................................1.01 to 6.00 × FLA in steps of 0.01
Pickup Accuracy: ............................................as per phase current inputs
Dropout Level:..................................................96 to 98% of pickup
Time Delay:........................................................0.5 to 125.0 s in steps of 0.5
Timing Accuracy:............................................±250 ms or ±0.5% of total trip time
37 UNDERCURRENT
Pickup Level: .....................................................0.10 to 0.99 × FLA in steps of 0.01
Pickup Accuracy: ............................................as per phase current inputs
Dropout Level:..................................................102 to 104% of pickup
Time Delay:........................................................1 to 255 s in steps of 1
Start Delay:........................................................0 to 15000 s in steps of 1
Timing Accuracy:............................................±500 ms or ±0.5% of total time
2–10
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
CHAPTER 2: PRODUCT DESCRIPTION
SPECIFICATIONS
46 UNBALANCE
Pickup Level: .....................................................4 to 30% in steps of 1
Pickup Accuracy: ............................................±2%
Dropout Level:..................................................1 to 2% below pickup
Time Delay: .......................................................1 to 255 s in steps of 1
Start Delay:........................................................0 to 5000 s in steps of 1
Timing Accuracy:............................................±500 ms or ±0.5% of total time
50G/51G 50N/51N GROUND FAULT
Pickup Level: .....................................................0.10 to 1.00 × CT for 1 A/5 A CT
0.25 to 25.00 A for 50:0.025 CT
Pickup Accuracy: ............................................as per ground current inputs
Dropout Level:..................................................96 to 98% of pickup
Time Delay: .......................................................0 to 255.00 s in steps of 0.01 s
Backup Delay: ..................................................0.01 to 255.00 s in steps of 0.01 s
Timing Accuracy:............................................+50 ms for delays <50 ms
±100 ms or ±0.5% of total trip time
ACCELERATION TRIP
Pickup Level: .....................................................motor start condition
Dropout Level:..................................................motor run, trip or stop condition
Time Delay: .......................................................1.0 to 250.0 s in steps of 0.1
Timing Accuracy:............................................±100 ms or ±0.5% of total time
38/49 RTD AND RRTD PROTECTION
Pickup Level: .....................................................1 to 200°C or 34 to 392°F
Pickup Accuracy:...................................±2°C or ±4°F
Dropout Level:..................................................96 to 98% of pickup above 80°C
Time Delay: .......................................................<5 s
OPEN RTD ALARM
Pickup Level: .....................................................detection of an open RTD
Pickup Accuracy: ............................................>1000 Ω
Dropout Level:..................................................96 to 98% of pickup
Time Delay: .......................................................<5 s
SHORT/LOW TEMP RTD ALARM
Pickup Level: .....................................................<–40°C or –40°F
Pickup Accuracy:...................................±2°C or ±4°F
Dropout Level:..................................................96 to 98% of pickup
Time Delay: .......................................................<5 s
LOSS OF RRTD COMMS ALARM
Pickup Level: .....................................................no communication
Time Delay: .......................................................2 to 5 s
27 UNDERVOLTAGE
Pickup Level: .....................................................0.50 to 0.99 × rated in steps of 0.01
Pickup Accuracy: ............................................as per phase voltage inputs
Dropout Level:..................................................102 to 104% of pickup
Time Delay: .......................................................0.0 to 255.0 s in steps of 0.1
Start Delay:........................................................separate level for start conditions
Timing Accuracy:............................................+75 ms for delays <50 ms
±100 ms or ±0.5% of total trip time
59 OVERVOLTAGE
Pickup Level: .....................................................1.01 to 1.25 × rated in steps of 0.01
Pickup Accuracy: ............................................as per phase voltage inputs
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
2–11
SPECIFICATIONS
CHAPTER 2: PRODUCT DESCRIPTION
Dropout Level:..................................................96 to 98% of pickup
Time Delay:........................................................0.0 to 255.0 s in steps of 0.1
Timing Accuracy:............................................±100 ms or ±0.5% of total trip time
47 PHASE REVERSAL
Pickup Level: .....................................................phase reversal detected
Time Delay:........................................................500 to 700 ms
81 UNDERFREQUENCY
Pickup Level: .....................................................20.00 to 70.00 Hz in steps of 0.01
Pickup Accuracy: ............................................±0.02 Hz
Dropout Level:..................................................0.05 Hz
Time Delay:........................................................0.0 to 255.0 s in steps of 0.1
Start Delay:........................................................0 to 5000 s in steps of 1
Timing Accuracy:............................................±100 ms or ±0.5% of total trip time
81 OVERFREQUENCY
Pickup Level: .....................................................20.00 to 70.00 Hz in steps of 0.01
Pickup Accuracy: ............................................±0.02 Hz
Dropout Level:..................................................0.05 Hz
Time Delay:........................................................0.0-255.0 s in steps of 0.1
Start Delay:........................................................0-5000 s in steps of 1
Timing Accuracy:............................................±100 ms or ±0.5% of total trip time
55 LEAD POWER FACTOR
Pickup Level: .....................................................0.99 to 0.05 in steps of 0.01
Pickup Accuracy: ............................................±0.02
Dropout Level:..................................................0.03 of pickup
Time Delay:........................................................0.1 to 255.0 s in steps of 0.1
Start Delay:........................................................0 to 5000 s in steps of 1
Timing Accuracy:............................................±300 ms or ±0.5% of total trip time
55 LAG POWER FACTOR
Pickup Level: .....................................................0.99 to 0.05 in steps of 0.01
Pickup Accuracy: ............................................±0.02
Dropout Level:..................................................0.03 of pickup
Time Delay:........................................................0.1 to 255.0 s in steps of 0.1
Start Delay:........................................................0 to 5000 s in steps of 1
Timing Accuracy:............................................±300 ms or ±0.5% of total trip time
POSITIVE REACTIVE POWER
Pickup Level: .....................................................1 to 25000 in steps of 1
Pickup Accuracy: ............................................±2%
Dropout Level:..................................................96 to 98% of pickup
Time Delay:........................................................0.1 to 255.0 s in steps of 0.1
Start Delay:........................................................0 to 5000 s in steps of 1
Timing Accuracy:............................................±300 ms or ±0.5% of total trip time
NEGATIVE REACTIVE POWER
Pickup Level: .....................................................1 to 25000 kvar in steps of 1
Pickup Accuracy: ............................................±2%
Dropout Level:..................................................96 to 98% of pickup
Time Delay:........................................................0.1 to 255.0 s in steps of 0.1
Start Delay:........................................................0 to 5000 s in steps of 1
Timing Accuracy:............................................±300 ms or ±0.5% of total trip time
37 UNDERPOWER
Pickup Level: .....................................................1 to 25000 kW in steps of 1
Pickup Accuracy: ............................................±2%
2–12
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
CHAPTER 2: PRODUCT DESCRIPTION
SPECIFICATIONS
Dropout Level:..................................................102 to 104% of pickup
Time Delay: .......................................................0.5 to 255.0 s in steps of 0.5
Start Delay:........................................................0 to 15000 s in steps of 1
Timing Accuracy:............................................±300 ms or ±0.5% of total trip time
REVERSE POWER
Pickup Level: .....................................................1 to 25000 kW in steps of 1
Pickup Accuracy: ............................................±2%
Dropout Level:..................................................96 to 98% of pickup
Time Delay: .......................................................0.5 to 30.0 s in steps of 0.5
Start Delay:........................................................0 to 50000 s in steps of 1
Timing Accuracy:............................................±300 ms or ±0.5% of total trip time
87 DIFFERENTIAL SWITCH
Time Delay: .......................................................<200 ms
14 SPEED SWITCH
Time Delay: .......................................................0.5 to 100.0 s in steps of 0.5
Timing Accuracy:............................................±200 ms or ±0.5% of total trip time
GENERAL SWITCH
Time Delay: .......................................................0.1 to 5000.0 s in steps of 0.1
Start Delay:........................................................0 to 5000 s in steps of 1
Timing Accuracy:............................................±200 ms or ±0.5% of total trip time
DIGITAL COUNTER
Pickup: .................................................................on count equaling level
Time Delay: .......................................................<200 ms
BACKSPIN DETECTION
Dynamic BSD:...................................................20 mV to 480 V RMS
Pickup Level: .....................................................3 to 120 Hz in steps of 1
Dropout Level:..................................................2 to 30 Hz in steps of 1
Level Accuracy: ...............................................±0.02 Hz
Timing Accuracy:............................................±500 ms or ±0.5% of total trip time
2.2.6
Monitoring Elements
STARTER FAILURE
Pickup level: ......................................................motor run condition when tripped
Dropout level: ...................................................motor stopped condition
Time delay:........................................................10 to 1000 ms in steps of 10
Timing accuracy:............................................±100 ms
CURRENT DEMAND ALARM
Demand period: ..............................................5 to 90 min. in steps of 1
Pickup level: ......................................................0 to 65000 A in steps of 1
Pickup accuracy: ............................................as per phase current inputs
Dropout level: ...................................................96 to 98% of pickup
Time delay:........................................................<2 min.
kW DEMAND ALARM
Demand period: ..............................................5 to 90 min. in steps of 1
Pickup level: ......................................................1 to 50000 kW in steps of 1
Pickup accuracy: ............................................±2%
Dropout level: ...................................................96 to 98% of pickup
Time delay:........................................................<2 min.
kvar DEMAND ALARM
Demand period: ..............................................5 to 90 min. in steps of 1
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
2–13
SPECIFICATIONS
CHAPTER 2: PRODUCT DESCRIPTION
Pickup level:.......................................................1 to 50000 kvar in steps of 1
Pickup accuracy:.............................................±2%
Dropout level: ...................................................96 to 98% of pickup
Time delay: ........................................................<2 min.
kVA DEMAND ALARM
Demand period: ..............................................5 to 90 min in steps of 1
Pickup level:.......................................................1 to 50000 kVA in steps of 1
Pickup accuracy:.............................................±2%
Dropout level: ...................................................96 to 98% of pickup
Time delay: ........................................................<2 min.
TRIP COUNTER
Pickup: .................................................................on count equaling level
Time delay: ........................................................<200 ms
2.2.7
Control Elements
REDUCED VOLTAGE START
Transition Level: ..............................................25 to 300% FLA in steps of 1
Transition Time:...............................................1 to 250 sec. in steps of 1
Transition Control:..........................................Current, Timer, Current and Timer
UNDERVOLTAGE AUTORESTART
Pickup/Restoration level: ...........................0.50 to 1.00 × rated in steps of 0.01
Immediate Restart Power Loss Time: ..100 to 500 ms in steps of 100ms
Delay 1 Restart Power Loss Time: .........0.1 to 10 s in steps of 0.1 s, or OFF.
Delay 1 Restart Time Delay: .....................0 to 1200.0 s in steps of 0.2 s
Delay 2 Restart Power Loss Time: ........1 to 3600s in steps of 1s, Off or Unlimited
Delay 2 Restart Time Delay: .....................0 to 1200.0 s in steps of 0.2 s
Time Accuracy: ...............................................± 200ms
1 to 9 seconds (with loss of control power)
2.2.8
Environmental Specifications
AMBIENT TEMPERATURE
Operating Range: ..........................................-40°C to +60°C
Storage Range: ...............................................-40°C to +80°C
T-Code Rating: .................................................T4A (for MOD 502 only)
For 369 units with the Profibus, Modbus/TCP, or DeviceNet option the operating and
storage ranges are as follows:
NoteNOTE:
NOTE
Operating Range: ..........................................+5°C to +60°C
Storage Range: ...............................................+5°C to +80°C
HUMIDITY
Up to 95% non condensing
DUST/MOISTURE
IP50 (front)
VENTILATION
No special ventilation required as long as ambient temperature remains within specifications.
Ventilation may be required in enclosures exposed to direct sunlight.
2–14
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
CHAPTER 2: PRODUCT DESCRIPTION
SPECIFICATIONS
POLLUTION DEGREE II
OVERVOLTAGE CATEGORY II
CLEANING
May be cleaned with a damp cloth.
INSULATION CLASS I
ALTITUDE: 2000 m (max)
2.2.9
Long-term Storage
LONG-TERM STORAGE
Environment: ...................................................In addition to the above environmental considerations,
the relay should be stored in an environment that is dry,
corrosive-free, and not in direct sunlight.
Correct storage: ..............................................Prevents premature component failures caused by
environmental factors such as moisture or corrosive
gases. Exposure to high humidity or corrosive
environments will prematurely degrade the electronic
components in any electronic device regardless of its use
or manufacturer, unless specific precautions, such as
those mentioned in the Environmental section above, are
taken.
Note
NOTE
It is recommended that all relays be powered up once per year, for one hour
continuously, to avoid deterioration of electrolytic capacitors and subsequent relay
failure.
2.2.10 Approvals/Certification
Applicable Council Directive:
CE compliance:
North America:
According to:
Low voltage directive
EN/IEC61010-1
EMC Directive
EN50263 / EN61000-6-4
cULus e234799 NOIV/NOIV7
Haz loc Class 1 Div2
cULus e83849 NKCR/7
C22.2 No14
UL508, UL1053
ISO:
Manufactured under an ISO9001 registered quality program
DeviceNet CONFORMANCE TESTED™
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
2–15
SPECIFICATIONS
CHAPTER 2: PRODUCT DESCRIPTION
2.2.11 Type Tests
Test
Reference Standard
Test Level
Dielectric Voltage Withstand:
EN60255-27
2300 V AC
Impulse Voltage Withstand:
EN60255-27
5KV
Insulation Resistance
EN60255-27
500 V DC > 1 mOhm
Damped Oscillatory:
IEC61000-4-18/IEEEC37.90.1
2.5 KV @ 1 MHz, 100 KHz
Electrostatic Discharge:
IEC61000-4-2
Level 3
RF Immunity:
IEC61000-4-3
10 V/m 80 to 1GHz
1.4 to 2.7 GHz + spot
Fast Transient Disturbance:
IEC61000-4-4
2 KV, 5 KHz
Surge Immunity:
IEC61000-4-5
2 KV CM & 1 KV DM
Conducted RF Immunity:
IEC61000-4-6
10 V rms
Voltage Dip and Interruption:
IEC60255-11
DC interrupts & ripple (12%)
IEC61000-4-11
0, 40, 60, 80% dips,
250/300 cycle interrupts
CISPR 22/CISPR 11 /IEC60255-25
Class A
Power magnetic Immunity:
IEC61000-4-8
Level 5
Damped Oscillatory:
IEC61000-4-12
2.5KV CM, 1KV DM
Ingress Protection:
IEC60529
IP50 (front)
Environmental (Cold):
IEC60068-2-1
-40oC 16 hrs
Environmental (Dry heat):
IEC60068-2-2
85oC 16hrs
Relative Humidity Cyclic:
IEC60068-2-30
6-day variant 1
Radiated & Conducted Emissions:
2.2.12 Production Tests
DIELECTRIC STRENGTH
2200 VAC for 1 second (as per UL & CE)
BURN IN
8 hours at 60°C sampling plan
CALIBRATION AND FUNCTIONALITY
100% hardware functionality tested
100% calibration of all metered quantities
2–16
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
GE
Digital Energy
369 Motor Management Relay
Chapter 3: Installation
Installation
3.1
Mechanical Installation
3.1.1
Mechanical Installation
The 369 is contained in a compact plastic housing with the keypad, display,
communication port, and indicators/targets on the front panel. The unit should be
positioned so the display and keypad are accessible. To mount the relay, make cutout and
drill mounting holes as shown below. Mounting hardware (bolts and washers) is provided
with the relay. Although the relay is internally shielded to minimize noise pickup and
interference, it should be mounted away from high current conductors or sources of
strong magnetic fields.
Inches
(mm)
4.23”
(107)
8.07”
(205)
6.85”
(174)
6.125”
(156)
6.125”
(156)
RUNNING
OVERLOAD
SERVICE
LOCKOUT
10.45”
(265)
STARTING
6.65”
(169)
MOUNTING
SURFACE
CUT-OUT
10.875”
(276)
STOPPED
AUX 1
AUX 2
10.875”
(276)
TRIP
ALARM
10.24”
(260)
11.67”
(298)
OUTPUT STATUS MOTOR STATUS
0.218” (6) DIA.
(4 PLACES)
840703B6.DWG
FRONT VIEW
SIDE VIEW
REAR VIEW
FIGURE 3–1: Physical Dimensions
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
3–1
TERMINAL IDENTIFICATION
CHAPTER 3: INSTALLATION
DISPLAY MODULE
1.35”
(34)
8.07”
(205)
OUTPUT STATUS
6.125”
(156)
MOTOR STATUS
6.30”
(160)
0.75”
(19)
10.875”
(276)
11.67”
(296)
inches
(mm)
0.80”
(20)
(4 PLACES)
0.218” (6) DIA.
MOUNTING
SURFACE
REAR MOUNTING
SIDE VIEW
FRONT VIEW
1.81”
(46)
(PANEL VIEWED FROM FRONT)
I/O HOUSING
6.12”
(156)
4.23”
(107)
10.875”
(276)
0.75”
(19)
10.24
(260)
10.875”
(276)
6.30”
(160)
0.80”
(20)
(4 PLACES)
0.218” (6) DIA.
6.65”
(169)
FRONT VIEW
MOUNTING
SURFACE
SIDE VIEW
1.81”
(46)
REAR MOUNTING
(PANEL VIEWED FROM FRONT)
840715B7.DWG
FIGURE 3–2: Split Mounting Dimensions
3.2
3–2
Terminal Identification
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
CHAPTER 3: INSTALLATION
3.2.1
TERMINAL IDENTIFICATION
369 Relay Terminal List
TERMINAL
WIRING CONNECTION
WIRE GAUGE
TORQUE
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
RTD1 +
RTD1 –
RTD1 COMPENSATION
RTD1 SHIELD
RTD2 +
RTD2 –
RTD2 COMPENSATION
RTD2 SHIELD
RTD3 +
RTD3 –
RTD3 COMPENSATION
RTD3 SHIELD
RTD4 +
RTD4 –
RTD4 COMPENSATION
RTD4 SHIELD
RTD5 +
RTD5 –
RTD5 COMPENSATION
RTD5 SHIELD
RTD6 +
RTD6 –
RTD6 COMPENSATION
RTD6 SHIELD
RTD7 +
RTD7 –
RTD7 COMPENSATION
RTD7 SHIELD
RTD8 +
RTD8 –
RTD8 COMPENSATION
RTD8 SHIELD
RTD9 +
RTD9 –
RTD9 COMPENSATION
RTD9 SHIELD
RTD10 +
RTD10 –
RTD10 COMPENSATION
RTD10 SHIELD
RTD11 +
RTD11 –
RTD11 COMPENSATION
Min AWG: 24
Max AWG:12
4.5 to 5.3 in-lb
(0.5 to 0.6 Nm)
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
3–3
TERMINAL IDENTIFICATION
3–4
CHAPTER 3: INSTALLATION
TERMINAL
WIRING CONNECTION
44
45
46
47
48
51
52
53
54
55
56
57
58
59
60
61
62
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
RTD11 SHIELD
RTD12 +
RTD12 –
RTD12 COMPENSATION
RTD12 SHIELD
SPARE SW
SPARE SW COMMON
DIFFERENTIAL INPUT SW
DIFFERENTIAL INPUT SW COMMON
SPEED SW
SPEED SW COMMON
ACCESS SW
ACCESS SW COMMON
EMERGENCY RESTART SW
EMERGENCY RESTART SW COMMON
EXTERNAL RESET SW
EXTERNAL RESET SW COMMON
COMM1 RS485 +
COMM1 RS485 –
COMM1 SHIELD
COMM2 RS485 +
COMM2 RS485 –
COMM2 SHIELD
COMM3 RS485 +
COMM3 RS485 –
COMM3 SHIELD
ANALOG OUT 1
ANALOG OUT 2
ANALOG OUT 3
ANALOG OUT 4
ANALOG COM
ANALOG SHIELD
BACKSPIN VOLTAGE
BACKSPIN NEUTRAL
PHASE A CURRENT 5A
PHASE A CURRENT 1A
PHASE A COMMON
PHASE B CURRENT 5A
PHASE B CURRENT 1A
PHASE B COMMON
PHASE C CURRENT 5A
PHASE C CURRENT 1A
PHASE C COMMON
NEUT/GND CURRENT 50:0.025A
NEUT/GND CURRENT 1A
NEUT/GND CURRENT 5A
NEUT/GND COMMON
PHASE A VOLTAGE
PHASE A NEUTRAL
WIRE GAUGE
TORQUE
Min AWG: 24
Max AWG:12
4.5 to 5.3 in-lb
(0.5 to 0.6 Nm)
Min AWG: 18
Max AWG:10
14 in-lb
(1.6 Nm)
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
CHAPTER 3: INSTALLATION
3.2.2
TERMINAL IDENTIFICATION
TERMINAL
WIRING CONNECTION
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
PHASE B VOLTAGE
PHASE B NEUTRAL
PHASE C VOLTAGE
PHASE C NEUTRAL
TRIP NC
TRIP COMMON
TRIP NO
ALARM NC
ALARM COMMON
ALARM NO
AUX1 NC
AUX1 COMMON
AUX1 NO
AUX2 NC
AUX2 COMMON
AUX2 NO
POWER FILTER GROUND
POWER LINE
POWER NEUTRAL
POWER SAFETY
WIRE GAUGE
TORQUE
Min AWG: 18
Max AWG:10
Min AWG: 22
Max AWG:12
14 in-lb
(1.6 Nm
7 in-lb
(0.8 Nm
269 to 369 Relay Conversion Terminal List
269
WIRING CONNECTION
369
1
RTD1 +
1
2
RTD1 COMPENSATION
3
3
RTD1 –
2
4
RTD1 SHIELD
4
5
RTD2 +
5
6
RTD2 COMPENSATION
7
7
RTD2 –
6
8
RTD2 SHIELD
8
9
RTD3 +
9
10
RTD3 COMPENSATION
11
11
RTD3 –
10
12
RTD3 SHIELD
12
71
RTD4 +
13
70
RTD4 COMPENSATION
15
69
RTD4 –
14
68
RTD4 SHIELD
16
67
RTD5 +
17
66
RTD5 COMPENSATION
19
65
RTD5 –
18
64
RTD5 SHIELD
20
63
RTD6 +
21
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
3–5
TERMINAL IDENTIFICATION
3–6
CHAPTER 3: INSTALLATION
269
WIRING CONNECTION
369
62
RTD6 COMPENSATION
23
61
RTD6 –
22
60
RTD6 SHIELD
24
13
RTD7 +
25
14
RTD7 COMPENSATION
27
15
RTD7 –
26
16
RTD7 SHIELD
28
17
RTD8 +
29
18
RTD8 COMPENSATION
31
19
RTD8 –
30
20
RTD8 SHIELD
32
21
RTD9 +
33
22
RTD9 COMPENSATION
35
23
RTD9 –
34
24
RTD9 SHIELD
36
25
RTD10 +
37
26
RTD10 COMPENSATION
39
27
RTD10 –
38
28
RTD10 SHIELD
40
44
SPARE SW
51
45
SPARE SW COMMON
52
48
DIFFERENTIAL INPUT SW
53
49
DIFFERENTIAL INPUT SW COMMON
54
50
SPEED SW
55
51
SPEED SW COMMON
56
52
ACCESS SW
57
53
ACCESS SW COMMON
58
54
EMERGENCY RESTART SW
59
55
EMERGENCY RESTART SW COM
60
56
EXTERNAL RESET SW
61
57
EXTERNAL RESET SW COMMON
62
47
COMM1 RS485 +
71
46
COMM1 RS485 –
72
88
COMM1 SHIELD
73
59
ANALOG OUT 1
80
58
ANALOG COMMON
84
83
PHASE A CURRENT 1A
93
82
PHASE A COMMON
94
81
PHASE A CURRENT 5A
92
80
PHASE B CURRENT 1A
96
79
PHASE B COMMON
97
78
PHASE B CURRENT 5A
95
77
PHASE C CURRENT 1A
99
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
CHAPTER 3: INSTALLATION
TERMINAL IDENTIFICATION
269
WIRING CONNECTION
369
76
PHASE C COMMON
100
75
PHASE C CURRENT 5A
98
73
NEUTRAL/GROUND COMMON
104
72
NEUTRAL/GROUND CURRENT 5A
103
74
NEUT/GND CURRENT 50:0.025A
101
29
TRIP NC
111
30
TRIP COMMON
112
31
TRIP NO
113
32
ALARM NC
114
33
ALARM COMMON
115
34
ALARM NO
116
35
AUX1 NC
117
36
AUX1 COMMON
118
37
AUX1 NO
119
38
AUX2 NC
120
39
AUX2 COMMON
121
40
AUX2 NO
122
42
POWER FILTER GROUND
123
41
POWER LINE
124
43
POWER NEUTRAL
125
Terminals not available on the 369
84
MTM B+
N/A
85
MTM A–
N/A
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
3–7
TERMINAL IDENTIFICATION
3.2.3
CHAPTER 3: INSTALLATION
MTM to 369 Relay Conversion Terminal List
MTM
WIRING CONNECTION
369
1
POWER FILTER GROUND
123
2
PHASE A VOLTAGE
105
3
PHASE B VOLTAGE
107
4
PHASE B VOLTAGE
107
5
PHASE C VOLTAGE
109
6
PHASE A COM
94
7
PHASE A CURRENT 5A
92
8
PHASE A CURRENT 1A
93
9
PHASE B COM
97
10
PHASE B CURRENT 5A
95
11
PHASE B CURRENT 1A
96
12
PHASE C COM
100
13
PHASE C CURRENT 5A
98
14
PHASE C CURRENT 1A
99
15
COMM1 RS485 +
71
16
COMM1 RS485 –
72
17
COMM1 SHIELD
73
18
ANALOG OUT 1
80
19
ANALOG OUT1 COM
84
20
ANALOG OUT 2
81
21
ANALOG OUT 2 COM
84
22
ANALOG OUT 3
82
23
ANALOG OUT 3 COM
84
24
ANALOG OUT 4
83
25
ANALOG OUT 4 COM
84
26
ANALOG SHIELD
85
27
ALARM NC
114
28
ALARM COM
115
29
ALARM NO
116
31
SPARE SW
51
32
SPARE SW COM
52
34
POWER LINE
124
35
POWER NEUTRAL
125
Terminals not available on the 369:
3–8
30
PULSE OUTPUT (P/O)
N/A
33
SW.B
N/A
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
CHAPTER 3: INSTALLATION
3.2.4
TERMINAL IDENTIFICATION
MPM to 369 Relay Conversion Terminal List
MPM
WIRING CONNECTION
369
1
PHASE A VOLTAGE
105
2
PHASE B VOLTAGE
107
3
PHASE C VOLTAGE
109
4
PHASE NEUTRAL
108
5
POWER FILTER GROUND
123
6
POWER SAFETY
126
7
POWER NEUTRAL
125
8
POWER LINE
124
9
PHASE A CURRENT 5A
92
10
PHASE A CURRENT 1A
93
11
PHASE A COM
94
12
PHASE B CURRENT 5A
95
13
PHASE B CURRENT 1A
96
14
PHASE B COM
97
15
PHASE C CURRENT 5A
98
16
PHASE C CURRENT 1A
99
17
PHASE C COM
100
28
ANALOG OUT 1
80
27
ANALOG OUT 2
81
26
ANALOG OUT 3
82
25
ANALOG OUT 4
83
24
ANALOG COM
84
21
ANALOG SHIELD
85
43
ALARM NC
114
44
ALARM COM
115
45
ALARM NO
116
46
COMM1 SHIELD
73
47
COMM1 RS485 –
72
48
COMM1 RS485 +
71
Terminals not available on the 369
31
SWITCH INPUT 1
32
SWITCH INPUT 2
N/A
33
SWITCH COM
N/A
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
N/A
3–9
ELECTRICAL INSTALLATION
3.2.5
CHAPTER 3: INSTALLATION
Terminal Layout
FIGURE 3–3: TERMINAL LAYOUT
3.3
Electrical Installation
3.3.1
Typical Wiring Diagram
FIGURE 3–4: Typical Wiring for Motor Forward/Reversing Application
3.3.2
Typical Wiring
The 369 can be connected to cover a broad range of applications and wiring will vary
depending upon the user’s protection scheme. This section will cover most of the typical
369 interconnections.
In this section, the terminals have been logically grouped together for explanatory
purposes. A typical wiring diagram for the 369 is shown above in FIGURE 3–4: Typical
Wiring for Motor Forward/Reversing Application on page 3–10 and the terminal
arrangement has been detailed in FIGURE 3–3: TERMINAL LAYOUT on page 3–10. For
further information on applications not covered here, refer to Chapter : Applications or
contact the factory for further information.
3–10
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
CHAPTER 3: INSTALLATION
ELECTRICAL INSTALLATION
Hazard may result if the product is not used for intended purposes. This equipment can
only be serviced by trained personnel.
Do not run signal wires in the same conduit or bundle that carries power mains or high
level voltage or currents.
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
3–11
ELECTRICAL INSTALLATION
3.3.3
CHAPTER 3: INSTALLATION
Control Power
VERIFY THAT THE CONTROL POWER SUPPLIED TO THE RELAY IS WITHIN THE RANGE
COVERED BY THE ORDERED 369 RELAY’S CONTROL POWER.
Table 3–1: 369 POWER SUPPLY RANGES
369 POWER SUPPLY
AC RANGE
DC RANGE
HI
60 to 265 V
50 to 300 V
LO
20 to 48 V
20 to 60 V
The 369 has a built-in switchmode supply. It can operate with either AC or DC voltage
applied to it. The relay reboot time of the 369 is 2 seconds after the control power is
applied. For applications where the control power for the 369 is available from the same
AC source as that of the motor, it is recommended an uninterrupted power supply be used
to power up the relay or, alternatively, use a separate DC source to power up.
Extensive filtering and transient protection has been incorporated into the 369 to ensure
reliable operation in harsh industrial environments. Transient energy is removed from the
relay and conducted to ground via the ground terminal. This terminal must be connected
to the cubicle ground bus using a 10 AWG wire or a ground braid. Do not daisy-chain
grounds with other relays or devices. Each should have its own connection to the ground
bus.
The internal supply is protected via a 3.15 A slo-blo fuse that is accessible for replacement.
If it must be replaced ensure that it is replaced with a fuse of equal size (see FUSE on page
2–5).
3.3.4
Phase Current (CT) Inputs
The 369 requires one CT for each of the three motor phase currents to be input into the
relay. There are no internal ground connections for the CT inputs. Refer to Chapter :
Applications for information on two CT connections.
The phase CTs should be chosen such that the FLA of the motor being protected is no less
than 50% of the rated CT primary. Ideally, to ensure maximum accuracy and resolution,
the CTs should be chosen such that the FLA is 100% of CT primary or slightly less. The
maximum CT primary is 5000 A.
The 369 will measure 0.05 to 20 × CT primary rated current. The CTs chosen must be
capable of driving the 369 burden (see specifications) during normal and fault conditions
to ensure correct operation. See Section 7.4: CT Specification and Selection on page –8 for
information on calculating total burden and CT rating.
For the correct operation of many protective elements, the phase sequence and CT
polarity is critical. Ensure that the convention illustrated in FIGURE 3–4: Typical Wiring for
Motor Forward/Reversing Application on page 3–10 is followed.
3–12
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
CHAPTER 3: INSTALLATION
3.3.5
ELECTRICAL INSTALLATION
Ground Current Inputs
The 369 has an isolating transformer with separate 1 A, 5 A, and sensitive HGF (50:0.025)
ground terminals. Only one ground terminal type can be used at a time. There are no
internal ground connections on the ground current inputs.
The maximum ground CT primary for the 1 A and 5 A taps is 5000 A. Alternatively the
sensitive ground input, 50:0.025, can be used to detect ground current on high resistance
grounded systems.
The ground CT connection can either be a zero sequence (core balance) installation or a
residual connection. Note that only 1 A and 5 A secondary CTs may be used for the residual
connection. A typical residual connection is illustrated in below. The zero-sequence
connection is shown in the typical wiring diagram. The zero-sequence connection is
recommended. Unequal saturation of CTs, CT mismatch, size and location of motor,
resistance of the power system, motor core saturation density, etc. may cause false
readings in the residually connected ground fault circuit.
FIGURE 3–5: Typical Residual Connection
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
3–13
ELECTRICAL INSTALLATION
3.3.6
CHAPTER 3: INSTALLATION
Zero Sequence Ground CT Placement
The exact placement of a zero sequence CT to properly detect ground fault current is
shown below. If the CT is placed over a shielded cable, capacitive coupling of phase current
into the cable shield during motor starts may be detected as ground current unless the
shield wire is also passed through the CT window. Twisted pair cabling on the zero
sequence CT is recommended.
FIGURE 3–6: Zero Sequence CT
3.3.7
Phase Voltage (VT/PT) Inputs
The 369 has three channels for AC voltage inputs each with an internal isolating
transformer. There are no internal fuses or ground connections on these inputs. The
maximum VT ratio is 240:1. These inputs are only enabled when the metering option (M) is
ordered.
The 369 accepts either open delta or wye connected VTs (see the figure below). The voltage
channels are connected wye internally, which means that the jumper shown on the delta
connection between the phase B input and the VT neutral terminals must be installed.
Polarity and phase sequence for the VTs is critical for correct power and rotation
measurement and should be verified before starting the motor. As long as the polarity
markings on the primary and secondary windings of the VT are aligned, there is no phase
3–14
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
CHAPTER 3: INSTALLATION
ELECTRICAL INSTALLATION
shift. The markings can be aligned on either side of the VT. VTs are typically mounted
upstream of the motor breaker or contactor. Typically, a 1 A fuse is used to protect the
voltage inputs.
FIGURE 3–7: Wye/Delta Connection
3.3.8
Backspin Voltage Inputs
The Backspin voltage input is only operational if the optional backspin detection (B) feature
has been purchased for the relay. This input allows the 369 to sense whether the motor is
spinning after the primary power has been removed (breaker or contactor opened).
These inputs must be supplied by a separate VT mounted downstream (motor side) of the
breaker or contactor. The correct wiring is illustrated below.
FIGURE 3–8: Backspin Voltage Wiring
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
3–15
ELECTRICAL INSTALLATION
3.3.9
CHAPTER 3: INSTALLATION
RTD Inputs
The 369 can monitor up to 12 RTD inputs for Stator, Bearing, Ambient, or Other
temperature applications. The type of each RTD is field programmable as: 100 ohm
Platinum (DIN 43760), 100 ohm Nickel, 120 ohm Nickel, or 10 ohm Copper. RTDs must be
the three wire type. There are no provisions for the connection of thermistors.
The 369 RTD circuitry compensates for lead resistance, provided that each of the three
leads is the same length. Lead resistance should not exceed 25 ohms per lead for platinum
and nickel type RTDs or 3 ohms per lead for Copper type RTDs.
Shielded cable should be used to prevent noise pickup in industrial environments. RTD
cables should be kept close to grounded metal casings and avoid areas of high
electromagnetic or radio interference. RTD leads should not be run adjacent to or in the
same conduit as high current carrying wires.
The shield connection terminal of the RTD is grounded in the 369 and should not be
connected to ground at the motor or anywhere else to prevent noise pickup from
circulating currents.
If 10 ohm Copper RTDs are used special care should be taken to keep the lead resistance
as low as possible to maintain accurate readings.
3 WIRE SHIELDED CABLE
369 RELAY
Shield
RTD #1
RTD SENSING
SAFETY GROUND
Shield
RTD TERMINALS
AT MOTOR
12
4
Hot
1
Return
2
Compensation Com
MOTOR
Route cable in separate conduit from
current carrying conductors
RTD IN
MOTOR
STATOR
OR
BEARING
3
Maximum lead resistance per lead
25 ohms (Platinum & Nickel RTDs)
3 ohms (Copper RTDs)
840717A2a.CDR
FIGURE 3–9: RTD Inputs
3.3.10 Digital Inputs
DO NOT CONNECT LIVE CIRCUITS TO THE 369 DIGITAL INPUTS. THEY ARE DESIGNED FOR
DRY CONTACT CONNECTIONS ONLY.
Other than the ACCESS switch input the other 5 digital inputs are programmable. These
programmable digital inputs have default settings to match the functions of the 269Plus
switch inputs (differential, speed, emergency restart, remote reset and spare). However in
addition to their default settings they can also be programmed for use as generic inputs to
set up trips and alarms or for monitoring purposes based on external contact inputs.
A twisted pair of wires should be used for digital input connections.
Note
NOTE
3–16
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
CHAPTER 3: INSTALLATION
ELECTRICAL INSTALLATION
3.3.11 Analog Outputs
The 369 provides 1 analog current output channel as part of the base unit and 3 additional
analog outputs with the metering option (M). These outputs are field programmable to a
full-scale range of either 0 to 1 mA (into a maximum 2.4 kΩ impedance) and 4 to 20 mA or
0 to 20 mA (into a maximum 600 Ω impedance).
As shown in the typical wiring diagram (FIGURE 3–4: Typical Wiring for Motor Forward/
Reversing Application on page 3–10), these outputs share one common return. Polarity of
these outputs must be observed for proper operation.
Shielded cable should be used for connections, with only one end of the shield grounded,
to minimize noise effects. The analog output circuitry is isolated. Transorbs limit this
isolation to ±36 V with respect to the 369 safety ground.
If an analog voltage output is required, a burden resistor must be connected across the
input of the SCADA or measuring device (see the figure below). Ignoring the input
impedance of the input,
V FULL SCALE
R LOAD = -----------------------------I MAX
(EQ 3.1)
For 0-1 mA, for example, if 5 V full scale is required to correspond to 1 mA
V FULL SCALE
5V
R LOAD = ------------------------------ = ------------------- = 5000 Ω
0.001 A
I MAX
(EQ 3.2)
For 4-20 mA, this resistor would be
V FULL SCALE
5V
R LOAD = ------------------------------ = ------------------- = 250 Ω
0.020 A
I MAX
(EQ 3.3)
FIGURE 3–10: Analog Output Voltage Connection
3.3.12 Remote Display
The 369 display can be separated and mounted remotely up to 15 feet away from the
main relay. No separate source of control power is required for the display module. A 15
feet standard shielded network cable is used to make the connection between the display
module and the main relay. A recommended and tested cable is available from GE Multilin.
The cable should be wired as far away as possible from high current or voltage carrying
cables or other sources of electrical noise.
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
3–17
ELECTRICAL INSTALLATION
CHAPTER 3: INSTALLATION
For 369 units with an internal ground wire already attached to the display, the wire must
be detached from the display panel by unscrewing the ring lug from the ground post on
the display. This wire can be brought out through the slot as shown in the following figure,
and must then be grounded solidly to the metal panel on which the 369 relay is mounted.
Ring Lug
FIGURE 3–11: Internal ground wire detached from display panel
In addition the display module must be grounded if mounted remotely. A ground screw is
provided on the back of the display module to facilitate this. A 12 AWG wire is
recommended and should be connected to the same ground bus as the main relay unit.
The 369 relay will still function and protect the motor without the display connected.
3.3.13 Output Relays
The 369 provides four (4) form C output relays. They are labeled Trip, Aux 1, Aux 2, and
Alarm. Each relay has normally open (NO) and normally closed (NC) contacts and can
switch up to 8 A at either 250 V AC or 30 V DC with a resistive load. The NO or NC state is
determined by the ‘no power’ state of the relay outputs.
All four output relays may be programmed for fail-safe or non-fail-safe operation. When in
fail-safe mode, output relay activation or a loss of control power will cause the contacts to
go to their power down state.
Example:
3–18
•
A fail-safe NO contact closes when the 369 is powered up (if no prior unreset trip
conditions) and will open when activated (tripped) or when the 369 loses control
power.
•
A non-fail-safe NO contact remains open when the 369 is powered up (unless a prior
unreset trip condition) and will close only when activated (tripped). If control power is
lost while the output relay is activated (NO contacts closed) the NO contacts will open.
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
CHAPTER 3: INSTALLATION
ELECTRICAL INSTALLATION
Thus, in order to cause a trip on loss of control power to the 369, the Trip relay should be
programmed as fail-safe. See the figure below for typical wiring of contactors and
breakers for fail-safe and non-fail-safe operation. Output relays remain latched after
activation if the fault condition persists or the protection element has been programmed
as latched. This means that once this relay has been activated it remains in the active state
until the 369 is manually reset.
The Trip relay cannot be reset if a timed lockout is in effect. Lockout time will be adhered to
regardless of whether control power is present or not. The relay contacts may be reset if
motor conditions allow, by pressing the RESET key, using the REMOTE RESET switch or via
communications. The Emergency Restart feature overrides all features to reset the 369.
The rear of the 369 relay shows output relay contacts in their power down state.
Note
NOTE
In locations where system voltage disturbances cause voltage levels to dip below the
control power range listed in specifications, any relay contact programmed as fail-safe
may change state. Therefore, in any application where the ‘process’ is more critical
than the motor, it is recommended that the trip relay contacts be programmed as nonfail-safe. If, however, the motor is more critical than the ‘process’ then program the trip
contacts as fail-safe.
Note: * Relay contacts shown with control power removed
L
N
Start
STOP
Stop
112
CR
113
N
52a
Breaker Wiring 'Non-Fail-Safe' Mode
L
N
Start
111
Stop
TRIP
TRIP
L
Trip
Coil
STOP
112
113
N
112
113
Contactor Wiring 'Non-Fail-Safe' Mode
111
L
111
TRIP
TRIP
111
CR
Contactor Wiring 'Fail-Safe' Mode
112
Trip
Coil
52a
113
Breaker Wiring 'Fail-Safe' Mode
840716A4.CDR
FIGURE 3–12: Wiring / Fail-Safe and Non-Fail-Safe Modes
Latched trips and alarms are not retained after control power is removed from the 369
Note
NOTE
3.3.14 RS485 Communications
Three independent two-wire RS485 ports are provided. If option (F), the fiber optic port, is
installed and used, the COMM 3 RS485 port may not be used. The RS485 ports are isolated
as a group.
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
3–19
ELECTRICAL INSTALLATION
CHAPTER 3: INSTALLATION
Up to 32 369s (or other devices) can be daisy-chained together on a single serial
communication channel without exceeding the driver capability. For larger systems,
additional serial channels must be added. Commercially available repeaters may also be
used to increase the number of relays on a single channel to a maximum of 254. Note that
there may only be one master device per serial communication link.
Connections should be made using shielded twisted pair cables (typically 24 AWG).
Suitable cables should have a characteristic impedance of 120 ohms (e.g. Belden #9841)
and total wire length should not exceed 4000 ft. Commercially available repeaters can be
used to extend transmission distances.
Voltage differences between remote ends of the communication link are not uncommon.
For this reason, surge protection devices are internally installed across all RS485 terminals.
Internally, an isolated power supply with an optocoupled data interface is used to prevent
noise coupling. The source computer/PLC/SCADA system should have similar transient
protection devices installed, either internally or externally, to ensure maximum reliability.
To ensure that all devices in a daisy-chain are at the same potential, it is imperative
that the common terminals of each RS485 port are tied together and grounded in one
location only, at the master. Failure to do so may result in intermittent or failed
communications.
Correct polarity is also essential. 369 relays must be wired with all ‘+’ terminals connected
together, and all ‘–’ terminals connected together. Each relay must be daisy-chained to the
next one. Avoid star or stub connected configurations. The last device at each end of the
daisy-chain should be terminated with a 120 ohm ¼ watt resistor in series with a 1 nF
capacitor across the ‘+’ and ‘–’ terminals. Observing these guidelines will result in a reliable
communication system that is immune to system transients.
FIGURE 3–13: RS485 Wiring
3–20
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
CHAPTER 3: INSTALLATION
ELECTRICAL INSTALLATION
3.3.15 Typical Two-Speed (Low Speed/High Speed) Motor Wiring
ØA CT
100:5
H
GROUND CT
ØB CT
100:5
H
ØC CT
100:5
H
MOTOR
MOTOR
CIRCUIT
BREAKER
L1
ØA CT
50:5
L
A
C
A
B
B
C
L2
L
L3
L
ØB CT
50:5
ØC CT
50:5
NOTES
- SPEED SWITCH INPUT DEDICATED AS TWO-SPEED MONITOR
- SPEED 1 = L & SPEED 2 = H
CONTACTORS:
H = High Speed
L = Low Speed
- SPEED 1 PROGRAMMED AS NORMAL
SPEED 2 ADDITIONAL SETPOINTS.
- ENABLE 2 SPEED MOTOR PROTECTION
- PROGRAM SPEED 2 PHASE CT PRIMARY & FLA
- SELECT SPEED 2 O/L CURVE
- PROGRAM SPEED 2 UNDERCURRENT AND/OR ACCELERATION
92 93 94 95 96 97 98 99 100 102 104 103 101
105 106 107 108 109 110
VN
VB
1A COM 5A
5A
VN VC VN
Phase A
VOLTAGE INPUTS
Phase B
WITH METERING OPTION (M)
MOTOR
BEARING 2
PUMP
BEARING 1
PUMP
BEARING 2
PUMP
CASE
AMBIENT
369
1
2
3
4
SGND 5
6
7
8
9
TXD
RXD
9 PIN
CONNECTOR
CONTROL
POWER
OUTPUT RELAYS
shld.
Com
RTD4
ALARM
AUX. 1
AUX. 2
shld.
Com
RTD5
Com
RTD6
shld.
Com
RTD7
DIFFERENTIAL
RELAY
SPEED
SWITCH
ACCESS
SWITCH
EMERGENCY
RESTART
EXTERNAL
RESET
shld.
Com
RTD8
1
shld.
Com
51
52
53
54
55
56
57
58
59
60
61
62
SPARE
shld.
RTD9
2
ANALOG
OUTPUTS
MOTOR
BEARING 1
RTD3
DIGITAL INPUTS
STATOR
WINDING 6
Com
123
124
125
126
L
CONTROL
POWER
N
380VAC/125VDC
Motor Management
Relay R
shld.
GROUND
BUS
111
112
113
114
115
116
117
118
119
120
121
122
TRIP
OPTION
(M,B)
STATOR
WINDING 5
Com
FILTER GROUND
LINE +
NEUTRAL SAFETY GROUND
369
RTD2
CAN_H
STATOR
WINDING 4
GE Multilin
V+
STATOR
WINDING 3
RTD1
shld.
V
Option (B)
CURRENT INPUTS
V-
STATOR
WINDING 2
Com
OPTIONAL
N
Back Spin
Neut/Gnd
Phase C
OPTION ( R )
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
STATOR
WINDING 1
91 90
50:
0.025A
1A COM 1A COM 5A
1A COM 5A
CAN_L
VA
SHIELD
CT RATIOS SHOWN ARE JUST EXAMPLES
3
4
Com-
shld.
shld.
80
81
82
83
84
85
CR
ALARM
SELF TEST
ALARM
STARTER STATUS
87
H
DIFFERENTIAL
RELAY
SPEED 2 MONITOR SWITCH
KEYSWITCH
OR JUMPER
load
RS485
PF
Watts
+
-
METER
cpm-
Shield
Shield
PLC
Com
RTD10
Profibus (option P or P1)
Modbus/TCP (option E)
shld.
Com
DeviceNet
Option (D)
ST CONNECTION
RTD11
shld.
CHANNEL 1
CHANNEL 2
RS485
RS485
DB-9
(front)
SHLD
Com
OPTION (F)
SHLD
FIBER
SHLD
RTD12
71
shld.
72
73
74
75
76
SCADA
CHANNEL 3
RS485
77
78
79
Tx
Rx
50/125 uM FIBER
62.5/125 uM FIBER
100/140 uM FIBER
RTD1
COMPUTER
1
2
3
4
5
6
7
8
9
NOTE
RELAY CONTACTS SHOWN
WITH
CONTROL POWER REMOVED
RTD
ALARM
8
3 RXD
2 TXD
20
7 SGND
6
4
5
22
5
4
9
3
8
2
7
1
6
REMOTE
RTD
MODULE
RTD12
369 PC
PROGRAM
PC
840837A1.CDR
25 PIN
CONNECTOR
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
3–21
ELECTRICAL INSTALLATION
CHAPTER 3: INSTALLATION
The following additional setpoints should be programmed:
ENABLE 2 SPEED MOTOR PROTECTION under 5.3.2: CT/VT Setup
Program SPEED2 PHASE CT PRIMARY, SPEED2 MOTOR FLA, and SPEED 2 SYSTEM
PHASE SEQUENCE under 5.3.2: CT/VT Setup.
Select SPEED2 O/L CURVES under 5.13: S12 Two-speed Motor.
Program SPEED2 UNDERCURRENT and SPEED2 ACCELERATION under 5.13: S12
Two-speed Motor.
Note
NOTE
3–22
1.
Speed switch input dedicated as Two-speed monitor.
2.
Speed 1 = L (Low) ; Speed 2 = H (High).
3.
Speed 1 programmed as normal.
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
CHAPTER 3: INSTALLATION
ELECTRICAL INSTALLATION
3.3.16 Typical Motor Forward/Reverse Wiring
REVERSE CONTACTOR
R
R
R
HGF-CT
CIRCUIT BREAKER
F
A
C
F
B
A
B
(5 Amp CT)
MOTOR
F
C
FORWARD CONTACTOR
Twisted
Pair
92
105 106 107 108 109 110
93
Phase A
VOLTAGE INPUTS
PUMP
BEARING 1
PUMP
BEARING 2
PUMP
CASE
AMBIENT
369
1
TXD 2
RXD 3
4
SGND 5
6
7
8
9
9 PIN
CONNECTOR
CONTROL
POWER
OUTPUT RELAYS
RTD4
ALARM
AUX. 1
AUX. 2
RTD5
SPARE
Com
RTD6
shld.
Com
RTD7
DIGITAL INPUTS
shld.
DIFFERENTIAL
RELAY
SPEED
SWITCH
ACCESS
SWITCH
EMERGENCY
RESTART
EXTERNAL
RESET
shld.
Com
RTD8
1
shld.
Com
RTD9
2
ANALOG
OUTPUTS
MOTOR
BEARING 2
RTD3
OPTION
(M,B)
MOTOR
BEARING 1
Motor Management
Relay R
shld.
Com
3
4
Com-
shld.
shld.
Com
RTD10
Profibus
Option (P)
shld.
51
52
53
54
55
56
57
58
59
60
61
62
80
81
82
83
84
85
DeviceNet
Option (D)
shld.
Com
DB-9
(front)
CHANNEL 2
RS485
71
shld.
72
73
75
76
ALARM
SELF TEST
ALARM
STARTER STATUS
DIFFERENTIAL
RELAY
87
R SPEED 2 MONITOR SWITCH
KEYSWITCH
OR JUMPER
load
RS485
PF
Watts
+
-
METER
cpm-
Shield
Shield
PLC
SCADA
FIBER
SHLD Tx
77
78
79
Rx
50/125 uM FIBER
62.5/125 uM FIBER
100/140 uM FIBER
RTD1
COMPUTER
1
2
3
4
5
6
7
8
9
NOTE
RELAY CONTACTS SHOWN
WITH
CONTROL POWER REMOVED
RTD
ALARM
OPTION (F)
RS485
SHLD
74
CR
CHANNEL 3
RS485
SHLD
RTD12
CONTROL
POWER
N
ST CONNECTION
RTD11
CHANNEL 1
L
HUB
Ethernet
Option (E)
RJ-45
Com
GROUND
BUS
111
112
113
114
115
116
117
118
119
120
121
122
TRIP
shld.
Com
V
380VAC/125VDC
369
V+
STATOR
WINDING 6
Com
N
OPTIONAL
FILTER GROUND 123
LINE +
124
NEUTRAL 125
SAFETY GROUND 126
GE Multilin
RTD2
90
Option (B)
RTD1
shld.
91
Back Spin
Neut/Gnd
CURRENT INPUTS
shld.
Com
1A COM 1A COM 5A
Phase C
SHIELD
STATOR
WINDING 5
1A COM 5A
50:
0.025A
CAN_H
STATOR
WINDING 4
99 100 102 104 103 101
V-
STATOR
WINDING 3
98
CAN_L
STATOR
WINDING 2
Com
97
OPTION ( R )
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
96
Phase B
WITH METERING OPTION (M)
STATOR
WINDING 1
95
1A COM 5A
5A
VA VN VB VN VC VN
94
8
3 RXD
2 TXD
20
7 SGND
6
4
5
22
5
4
9
3
8
369 PC
PROGRAM
PC
2
7
1
6
REMOTE
RTD
MODULE
RTD12
840708A1.CDR
25 PIN
CONNECTOR
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REMOTE RTD MODULE (RRTD)
CHAPTER 3: INSTALLATION
The following additional setpoints should be programmed:
Enable 2-SPEED MOTOR PROTECTION under 5.3.2: CT/VT Setup.
Program SPEED2 PHASE CT PRIMARY, SPEED2 MOTOR FLA, and SPEED2 SYSTEM
PHASE SEQUENCE under 5.3.2: CT/VT Setup.
Select SPEED2 O/L CURVES under 5.13: S12 Two-speed Motor.
Program SPEED2 UNDERCURRENT and SPEED2 ACCELERATION under 5.13: S12
Two-speed Motor.
Note
NOTE
3.4
1.
VT must be connected on the breaker side of the contactor for proper power metering
and phase reversal trip protection.
2.
The system phase sequence of the VT input to the 369 must be the same as the
system phase sequence setpoint and the phase sequence for forward rotation of the
motor.
3.
The phase sequence for the reverse direction must be set as the Speed 2 phase
sequence.
4.
Speed switch input dedicated as the Two-Speed monitor.
5.
Speed 1 = F (Forward); Speed 2 = R (Reverse).
6.
Speed 1 programmed as normal.
Remote RTD Module (RRTD)
3.4.1
Mechanical Installation
The optional remote RTD module is designed to be mounted near the motor. This
eliminates the need for multiple RTD cables to run back from the motor which may be in a
remote location to the switchgear. Although the module is internally shielded to minimize
noise pickup and interference, it should be mounted away from high current conductors or
sources of strong magnetic fields.
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REMOTE RTD MODULE (RRTD)
The remote RTD module physical dimensions and mounting (drill diagram) are shown
below. Mounting hardware (bolts and washers) and instructions are provided with the
module.
FIGURE 3–14: Remote RTD Dimensions
FIGURE 3–15: Remote RTD Rear View
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CT INSTALLATION
3.4.2
CHAPTER 3: INSTALLATION
Electrical Installation
FIGURE 3–16: Remote RTD Module
3.5
3–26
CT Installation
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3.5.1
CT INSTALLATION
Phase CT Installation
FIGURE 3–17: Phase CT Installation
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CT INSTALLATION
3.5.2
CHAPTER 3: INSTALLATION
5 Amp Ground CT Installation
FIGURE 3–18: 5 A Ground CT Installation
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3.5.3
CT INSTALLATION
HGF (50:0.025) Ground CT Installation
FIGURE 3–19: HGF (50:0.025) Ground CT Installation, 3" and 5" Window
FIGURE 3–20: HGF (50:0.025) Ground CT Installation, 8" Window
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CT INSTALLATION
3–30
CHAPTER 3: INSTALLATION
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
GE
Digital Energy
369 Motor Management Relay
Chapter 4: User Interfaces
User Interfaces
4.1
Faceplate Interface
4.1.1
Display
All messages are displayed on a 40-character LCD display to make them visible under poor
lighting conditions and from various viewing angles. Messages are displayed in plain
English and do not require the aid of an instruction manual for deciphering. While the
keypad and display are not actively being used, the display will default to user defined
status messages. Any trip, alarm, or start inhibit will automatically override the default
messages and appear on the display.
4.1.2
LED Indicators
There are ten LED indicators, as follows:
• TRIP: Trip relay has operated (energized)
• ALARM: Alarm relay has operated (energized)
• AUX 1: Auxiliary relay has operated (energized)
• AUX 2: Auxiliary relay has operated (energized)
• SERVICE: Relay in need of technical service.
• STOPPED: Motor is in the Stopped condition
• STARTING: Motor is in the Starting condition
• RUNNING: Motor is in the Running condition
• OVERLOAD: Motor is in the Overload condition
• LOCKOUT: Motor is in the Lockout condition
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FACEPLATE INTERFACE
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FIGURE 4–1: LED Indicators - Enhanced Faceplate
FIGURE 4–2: LED Indicators - Basic Faceplate
4.1.3
RS232 Program Port
This port is intended for connection to a portable PC. Setpoint files may be created at any
location and downloaded through this port using the EnerVista 369 Setup software. Local
interrogation of Setpoints and Actual Values is also possible. New firmware may be
downloaded to the 369 Relay flash memory through this port. Upgrading of the relay
firmware does not require a hardware EPROM change.
4.1.4
Keypad
The 369 Relay messages are organized into pages under the main headings, Setpoints and
Actual Values. The [SETPOINTS] key is used to navigate through the page headers of the
programmable parameters. The [ACTUAL VALUES] key is used to navigate through the
page headers of the measured parameters.
Each page is broken down further into logical subgroups of messages. The [PAGE] up and
down keys may be used to navigate through the subgroups.
• [SETPOINTS]: This key may be used to navigate through the page headers of the
programmable parameters. Alternately, one can press this key followed by using
the Page Up / Page Down keys.
• [ACTUAL VALUES]: This key is used to navigate through the page headers of the
measured parameters. Alternately, one can scroll through the pages by pressing
the Actual Values key followed by using the Page Up / Page Down keys.
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ENERVISTA 369 SETUP INTERFACE
• [PAGE]: The Page Up/ Page Down keys may be used to scroll through page headers
for both Setpoints and Actual Values.
• [LINE]: Once the required page is found, the Line Up/ Line Down keys may be used
to scroll through the sub-headings.
• [VALUE]: The Value Up and Value Down keys are used to scroll through variables in
the Setpoint programming mode. It will increment and decrement numerical
Setpoint values, or alter yes/no options.
• [RESET]: The reset key may be used to reset a trip or latched alarm, provided it has
been activated by selecting the local reset.
• [ENTER] The key is dual purpose. It is used to enter the subgroups or store altered
setpoint values.
• [CLEAR] The key is also dual purpose. It may be used to exit the subgroups or to
return an altered setpoint to its original value before it has been stored.
• [HELP]: The help key may be pressed at any time for context sensitive help
messages; such as the Setpoint range, etc.
To enter setpoints, select the desired page header. Then press the [LINE UP] / [LINE DOWN]
keys to scroll through the page and find the desired subgroup. Once the desired subgroup
is found, press the [VALUE UP] / [VALUE DOWN] keys to adjust the setpoints. Press the
[ENTER] key to save the setpoint or the [CLEAR] key to revert back to the old setpoint.
4.1.5
Setpoint Entry
In order to store any setpoints, Terminals 57 and 58 (access terminals) must be shorted (a
key switch may be used for security). There is also a Setpoint Passcode feature that may be
enabled to restrict access to setpoints. The passcode must be entered to allow the
changing of setpoint values. A passcode of 0 effectively turns off the passcode feature and
only the access jumper is required for changing setpoints.
If no key is pressed for 30 minutes, access to setpoint values will be restricted until the
passcode is entered again. To prevent setpoint access before the 30 minutes expires, the
unit may be turned off and back on, the access jumper may be removed, or the SETPOINT
ACCESS setpoint may be changed to Restricted. The passcode cannot be entered until
terminals 57 and 58 (access terminals) are shorted.
Setpoint changes take effect immediately, even when motor is running. It is not
recommended, however, to change setpoints while the motor is running as any mistake
could cause a nuisance trip.
Refer to Section 5.2.1: Setpoint Access on page –4 for a detailed description of the setpoint
access procedure.
4.2
EnerVista 369 Setup Interface
4.2.1
Hardware and Software Requirements
The following minimum requirements must be met for the EnerVista 369 Setup software to
operate on your computer.
• Pentium class or higher processor (Pentium II 300 MHz or better recommended)
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CHAPTER 4: USER INTERFACES
• Microsoft Windows 95, 98, 98SE, ME, NT 4.0 (SP4 or higher), 2000, XP
• 64 MB of RAM (256 MB recommended)
• Minimum of 50 MB hard disk space (200 MB recommended)
If EnerVista 369 Setup is currently installed, note the path and directory name. It may be
required during upgrading.
The EnerVista 369 Setup software is included on the GE EnerVista CD that accompanied
the 369 Relay. The software may also be downloaded from the GE Multilin website at http:/
/www.gedigitalenergy.com.
4.2.2
Installing EnerVista 369 Setup
After ensuring these minimum requirements, use the following procedure to install the
EnerVista 369 Setup software from the enclosed GE enerVista CD.
 Insert the GE enerVista CD into your CD-ROM drive.
 Click the Install Now button and follow the installation instructions to install the
no-charge enerVista software on the local PC.
 When installation is complete, start the enerVista Launchpad application.
 Click the IED Setup section of the Launch Pad window.
 In the enerVista LaunchPad window, click the Add Product button and select the
“369 Motor Management Relay” as shown below. Select the “Web” option to
ensure the most recent software release, or select “CD” if you do not have a web
connection, then click the Add Now button to list software items for the 369 Relay.
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ENERVISTA 369 SETUP INTERFACE
EnerVista Launchpad will obtain the installation program from the Web or CD.
 Once the download is complete, double-click the installation program to install the
EnerVista 369 Setup software.
The program will request the user to create a backup 3.5" floppy-disk set.
 If this is desired, click on the Start Copying button; otherwise, click on the
CONTINUE WITH 369 Relay INSTALLATION button.
 Select the complete path, including the new directory name, where the EnerVista
369 Setup software will be installed.
 Click on Next to begin the installation.
The files will be installed in the directory indicated and the installation program will
automatically create icons and add EnerVista 369 Setup software to the Windows
start menu.
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CHAPTER 4: USER INTERFACES
 Click Finish to end the installation.
The 369 Relay device will be added to the list of installed IEDs in the enerVista
Launchpad window, as shown below.
4.3
Connecting EnerVista 369 Setup to the Relay
4.3.1
Configuring Serial Communications
Before starting, verify that the serial cable is properly connected to either the RS232 port
on the front panel of the device (for RS232 communications) or to the RS485 terminals on
the back of the device (for RS485 communications).
This example demonstrates an RS232 connection. For RS485 communications, the GE
Multilin F485 converter will be required. Refer to the F485 manual for additional details. To
configure the relay for Ethernet communications, see Configuring Ethernet
Communications on page 4–8.
 Install and start the latest version of the EnerVista 369 Setup software (available
from the GE enerVista CD).
See the previous section for the installation procedure.
 Click on the Device Setup button to open the Device Setup window.
 Click the Add Site button to define a new site.
 Enter the desired site name in the Site Name field.
If desired, a short description of site can also be entered along with the display
order of devices defined for the site. In this example, we will use “Substation 1” as
the site name.
 Click the OK button when complete.
The new site will appear in the upper-left list in the EnerVista 369 Setup window.
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 Click the Add Device button to define the new device.
 Enter the desired name in the Device Name field and a description (optional) of the
site.
 Select “Serial” from the Interface drop-down list.
This will display a number of interface parameters that must be entered for proper
RS232 functionality.
 Enter the slave address and COM port values (from the S1 369 RELAY SETUP 
369 RELAY COMMUNICATIONS menu) in the Slave Address and COM Port fields.
 Enter the physical communications parameters (baud rate and parity settings) in
their respective fields.
 Click the Read Order Code button to connect to the 369 Relay device and upload
the order code.
If an communications error occurs, ensure that the 369 Relay serial
communications values entered in the previous step correspond to the relay
setting values.
 Click OK when the relay order code has been received.
The new device will be added to the Site List window (or Online window) located in
the top left corner of the main EnerVista 369 Setup window.
The 369 Relay Site Device has now been configured for serial communications. Proceed to
Connecting to the Relay on page 4–10 to begin communications.
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4.3.2
CHAPTER 4: USER INTERFACES
Using the Quick Connect Feature
The Quick Connect button can be used to establish a fast connection through the front
panel RS232 port of a 369 Relay relay. The following window will appear when the Quick
Connect button is pressed:
As indicated by the window, the Quick Connect feature quickly connects the EnerVista 369
Setup software to a 369 Relay front port with the following settings: 9600 baud, no parity, 8
bits, 1 stop bit. Select the PC communications port connected to the relay and press the
Connect button.
The EnerVista 369 Setup software will display a window indicating the status of
communications with the relay. When connected, a new Site called “Quick Connect” will
appear in the Site List window. The properties of this new site cannot be changed.
The 369 Relay Site Device has now been configured via the Quick Connect feature for serial
communications. Proceed to Connecting to the Relay on page 4–10 to begin
communications.
4.3.3
Configuring Ethernet Communications
Before starting, verify that the Ethernet cable is properly connected to the MultiNET device,
and that the MultiNET has been configured and properly connected to the relay. Refer to
the MultiNET manual for additional details on configuring the MultiNET to work with the
369 Relay.
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 Install and start the latest version of the EnerVista 369 Setup software (available
from the GE enerVista CD).
See the previous section for the installation procedure.
 Click on the Device Setup button to open the Device Setup window.
 Click the Add Site button to define a new site.
 Enter the desired site name in the Site Name field.
If desired, a short description of site can also be entered along with the display
order of devices defined for the site. In this example, we will use “Substation 2” as
the site name.
 Click the OK button when complete.
The new site will appear in the upper-left list in the EnerVista 369 Setup window.
 Click the Add Device button to define the new device.
 Enter the desired name in the Device Name field and a description (optional) of the
site.
 Select Ethernet from the Interface drop-down list.
This will display a number of interface parameters that must be entered for proper
Ethernet functionality.
 Enter the IP address assigned to the MultiNET adapter.
 Enter the slave address and Modbus port values (from the S1 369 RELAY SETUP
 369 RELAY COMMUNICATIONS menu) in the Slave Address and Modbus
Port fields.
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 Click the Read Order Code button to connect to the 369 Relay device and upload
the order code.
If an communications error occurs, ensure that the 369 Relay Ethernet
communications values entered in the previous step correspond to the relay and
MultiNET setting values.
 Click OK when the relay order code has been received.
The new device will be added to the Site List window (or Online window) located in
the top left corner of the main EnerVista 369 Setup window.
The 369 Relay Site Device has now been configured for Ethernet communications. Proceed
to the following section to begin communications.
4.3.4
Connecting to the Relay
Now that the communications parameters have been properly configured, the user can
easily connect to the relay.
 Expand the Site list by double clicking on the site name or clicking on the «+» box
to list the available devices for the given site (for example, in the “Substation 1” site
shown below).
 Desired device trees can be expanded by clicking the «+» box. The following list of
headers is shown for each device:
• Device Definitions
• Settings
• Actual Values
• Commands
• Communications
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CONNECTING ENERVISTA 369 SETUP TO THE RELAY
 Expand the Settings > Relay Setup list item and double click on Front Panel to open
the Front Panel settings window as shown below:
FIGURE 4–3: Main Window After Connection
The Front Panel settings window will open with a corresponding status indicator
on the lower left of the EnerVista 369 Setup window.
 If the status indicator is red, verify that the serial or Ethernet cable is properly
connected to the relay, and that the relay has been properly configured for
communications (steps described earlier).
The Front Panel settings can now be edited, printed, or changed according to user
specifications. Other setpoint and commands windows can be displayed and edited in a
similar manner. Actual values windows are also available for display. These windows can
be locked, arranged, and resized at will.
Refer to the EnerVista 369 Setup Help File for additional information about the using
the software.
Note
NOTE
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4.4
CHAPTER 4: USER INTERFACES
Working with Setpoints and Setpoint Files
4.4.1
Engaging a Device
The EnerVista 369 Setup software may be used in on-line mode (relay connected) to
directly communicate with a 369 Relay relay. Communicating relays are organized and
grouped by communication interfaces and into sites. Sites may contain any number of
relays selected from the SR or UR product series.
4.4.2
Entering Setpoints
The System Setup page will be used as an example to illustrate the entering of setpoints. In
this example, we will be changing the current sensing setpoints.
 Establish communications with the relay.
 Select the Setpoint > S2 System Setup > CT/VT Setup menu item.
This can be selected from the device setpoint tree or the main window menu bar.
 Select the PHASE CT PRIMARY setpoint by clicking anywhere in the parameter
box.
This will display three arrows: two to increment/decrement the value and another
to launch the numerical calculator.
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 Clicking the arrow at the end of the box displays a numerical keypad interface that
allows the user to enter a value within the setpoint range displayed near the top of
the keypad:
 Click Accept to exit from the keypad and keep the new value.
 Click on Cancel to exit from the keypad and retain the old value.
 For setpoints requiring non-numerical pre-set values (e.g. GROUND CT TYPE
above), clicking anywhere within the setpoint value box displays a drop-down
selection menu arrow. Select the desired value from this list.
 For setpoints requiring an alphanumeric text string (e.g. message scratchpad
messages), the value may be entered directly within the setpoint value box.
 Click on Save to save the values into the 369 Relay.
 Click OK to accept any changes and exit the window.
 Otherwise, click Restore to retain previous values and exit.
4.4.3
File Support
Opening any EnerVista 369 Setup file will automatically launch the application or provide
focus to the already opened application. If the file is a settings file (has a ‘369 Relay’
extension) which had been removed from the Settings List tree menu, it will be added back
to the Settings List tree.
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New files will be automatically added to the tree, which is sorted alphabetically with
respect to settings file names.
4.4.4
Using Setpoints Files
Overview
The EnerVista 369 Setup software interface supports three ways of handling changes to
relay settings:
• In off-line mode (relay disconnected) to create or edit relay settings files for later
download to communicating relays.
• Directly modifying relay settings while connected to a communicating relay, then
saving the settings when complete.
• Creating/editing settings files while connected to a communicating relay, then
saving them to the relay when complete.
Settings files are organized on the basis of file names assigned by the user. A settings file
contains data pertaining to the following categories of relay settings:
• Device Definition
• Product Setup
• System Setup
• Grouped Elements
• Control Elements
• Inputs/Outputs
• Testing
Factory default values are supplied and can be restored after any changes.
The EnerVista 369 Setup software displays relay setpoints with the same hierarchy as the
front panel display. For specific details on setpoints, refer to Chapter 5.
Downloading and Saving Setpoints Files
Setpoints must be saved to a file on the local PC before performing any firmware
upgrades. Saving setpoints is also highly recommended before making any setpoint
changes or creating new setpoint files.
The EnerVista 369 Setup window, setpoint files are accessed in the Settings List control bar
window or the Files Window. Use the following procedure to download and save setpoint
files to a local PC.
 Ensure that the site and corresponding device(s) have been properly defined and
configured as shown in Connecting EnerVista 369 Setup to the Relay on page 4–6.
 Select the desired device from the site list.
 Select the File > Read Settings from Device menu item to obtain settings
information from the device.
After a few seconds of data retrieval, the software will request the name and
destination path of the setpoint file. The corresponding file extension will be
automatically assigned.
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 Press Save to complete the process.
A new entry will be added to the tree, in the File pane, showing path and file name
for the setpoint file.
Adding Setpoints Files to the Environment
The EnerVista 369 Setup software provides the capability to review and manage a large
group of setpoint files. Use the following procedure to add a new or existing file to the list.
 In the files pane, right-click on ‘Files’.
 Select the Add Existing Setting File item as shown
:
The Open dialog box will appear, prompting the user to select a previously saved
setpoint file.
 As for any other Microsoft Windows® application, browse for the file to be added
then
 Click Open.
The new file and complete path will be added to the file list.
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Creating a New Settings File using Motor Settings Auto-Config
The EnerVista 369 Setup software allows the user to create new Settings files independent
of a connected device. These can be uploaded to a relay at a later date.
One method of doing this - the EnerVista Motor Settings Auto-Config option - allows the
user to easily create new Settings Files automatically, using a guided step-by-step process
as outlined below.
The Motor Settings Auto-Config option does NOT allow the user to configure existing
Settings Files.
Note
NOTE
The following procedure illustrates how to create new Settings Files using the Motor
Settings Auto-Config option:
 At the top of the screen, click on the Motor Settings Auto-Config button.
OR
 On the main menu, select File > Motor Settings Auto-Configurator
The EnerVista 369 Setup software displays the following box, allowing the
configuration of the Settings File as shown.
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.
It is important to define the correct firmware version to ensure that settings not available
in a particular version are not downloaded into the relay
Note
NOTE
 Select the Firmware Version for the new Settings File.
 For future reference, enter some useful information in the Description box to
facilitate the identification of the device and the purpose of the file.
 To select a file name and path for the new file, click the button [...] beside the File
Name box.
 Select the file name and path to store the file, or select any displayed file name to
update an existing file.
All 369 Relay Settings Files should have the extension ‘369 Relay’ (for example,
‘motor1.369 Relay’).
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 Click Next and OK to continue the process.
A new window - Step 1 - will appear:
 Fill in the fields as indicated.
 When complete, press Next.
The next window - Step 2 - will appear as follows:
Note
NOTE
4–18
As each Step is completed, the user will be prompted to make appropriate changes to
what has been entered, if the Auto-Configurator determines that the parameter entered is
incorrect or inappropriate for the situation.
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 Continue filling in the fields as indicated.
Once you have completed all 6 Steps, the final window will show as follows:
 Click Finish to complete the Auto-Config procedure.
The Motor Settings Auto-Configurator window will disappear.
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A new Settings File containing the parameters you have just input will appear in
the Files pane as shown:
Creating a New Settings File without using Motor Settings Auto-Config
The EnerVista 369 Setup software allows the user to create new Settings files independent
of a connected device. These can be uploaded to a relay at a later date. The following
manual procedure - as distinct from the Motor Settings Auto-Config option described
above - illustrates how to create new Settings Files.
 In the File pane, right click on File.
 Select the New Settings File item.
The EnerVista 369 Setup software displays the following window, allowing the
configuration of the Settings File as shown below.
Note that this window allows you to choose between creating your Settings File manually
or using the Motor Settings Auto-Configurator as detailed above.
Note
NOTE
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It is important to define the correct firmware version to ensure that settings not available
in a particular version are not downloaded into the relay
Note
NOTE
 Select the Firmware Version for the new Settings File.
 For future reference, enter some useful information in the Description box to
facilitate the identification of the device and the purpose of the file.
 To select a file name and path for the new file, click the button beside the File
Name box [...].
 Select the file name and path to store the file, or select any displayed file name to
update an existing file.
All 369 Relay Settings Files should have the extension ‘369 Relay’ (for example,
‘motor1.369 Relay’).
 Click the appropriate radio button (yes or no) to choose between AutoConfigurator or manual creation of the Settings File.
 Click OK to complete the process.
Once this step is completed, the new file, with a complete path, will be added to
the EnerVista 369 Setup software environment.
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 Enter the appropriate settings manually to complete the new Settings File.
Creating a New Setpoint File
The EnerVista 369 Setup software allows the user to create new setpoint files independent
of a connected device. These can be uploaded to a relay at a later date. The following
procedure illustrates how to create new setpoint files.
 In the File pane, right click on File.
 Select the New Settings File item.
The EnerVista 369 Setup software displays the following box will appear, allowing
the configuration of the setpoint file for the correct firmware version. It is
important to define the correct firmware version to ensure that setpoints not
available in a particular version are not downloaded into the relay.
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 Select the firmware version.
 For future reference, enter some useful information in the Description box to
facilitate the identification of the device and the purpose of the file.
 Enter any installed options (metering/backspin and Profibus), as well as the slave
addresses of any remote RTDs.
Note that the RRTD units must be connected in order from 1 to 4. If only one RRTD
is used, it's slave address must be programmed under RRTD1 Slave Address. The
next RRTD to be connected would be set up under RRTD2 Slave Address, and so
forth.
 To select a file name and path for the new file, click the button beside the Enter
File Name box.
 Select the file name and path to store the file, or select any displayed file name to
update an existing file.
All 369 Relay setpoint files should have the extension ‘369 Relay’ (for example,
‘motor1.369 Relay’).
 Click Save and OK to complete the process.
Once this step is completed, the new file, with a complete path, will be added to
the EnerVista 369 Setup software environment.
Upgrading Setpoint Files to a New Revision
It is often necessary to upgrade the revision code for a previously saved setpoint file after
the 369 Relay firmware has been upgraded (for example, this is required for firmware
upgrades). This is illustrated in the following procedure.
 Establish communications with the 369 Relay.
 Select the Actual > A5 Product Info menu item and record the Software Revision
identifier of the relay firmware.
 Load the setpoint file to be upgraded into the EnerVista 369 Setup environment as
described in Adding Setpoints Files to the Environment on page 4–15.
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 In the File pane, select the saved setpoint file.
 From the main window menu bar, select the File > Properties menu item.
 Note the File Version of the setpoint file.
If this version (e.g. 5.00 shown below) is different from the Software Revision code
noted in step 2, select a New File Version that matches the Software Revision
code from the pull-down menu.
For example, if the firmware revision is 27I600A4.000 (software revision 6.00) and
the current setpoint file revision is 5.00, change the setpoint file revision to “6.0X”.
 When complete, click Convert to convert the setpoint file to the desired revision.
A dialog box will request confirmation. See Loading Setpoints from a File on page
4–25 for instructions on loading this setpoint file into the 369 Relay.
Printing Setpoints and Actual Values
The EnerVista 369 Setup software allows the user to print partial or complete lists of
setpoints and actual values. Use the following procedure to print a list of setpoints:
 Select a previously saved setpoints file in the File pane or establish
communications with a 369 Relay device.
 From the main window, select the File > Print Settings menu item.
The Print/Export Options dialog box will appear.
 Select Settings in the upper section.
 Select either Include All Features (for a complete list) or Include Only Enabled
Features (for a list of only those features which are currently used) in the filtering
section.
 Click OK.
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The process for File > Print Preview Settings is identical to the steps above.
Setpoints lists can be printed in the same manner by right clicking on the desired file (in the
file list) or device (in the device list) and selecting the Print Device Information or Print
Settings File options.
A complete list of actual values can also be printed from a connected device with the
following procedure:
 Establish communications with the desired 369 Relay device.
 From the main window, select the File > Print Settings menu item.
The Print/Export Options dialog box will appear.
 Select Actual Values in the upper section.
 Select either Include All Features (for a complete list) or Include Only Enabled
Features (for a list of only those features which are currently used) in the filtering
section.
 Click OK.
 Actual values lists can be printed in the same manner by right clicking on the
desired device (in the device list) and selecting the Print Device Information
option.
Loading Setpoints from a File
Note
NOTE
An error message will occur when attempting to download a setpoint file with a
revision number that does not match the relay firmware. If the firmware has been
upgraded since saving the setpoint file, see Upgrading Setpoint Files to a New Revision
on page 4–23 for instructions on changing the revision number of a setpoint file.
The following procedure illustrates how to load setpoints from a file. Before loading a
setpoints file, it must first be added to the EnerVista 369 Setup environment as described
in Adding Setpoints Files to the Environment on page 4–15.
 Select the previously saved setpoints file from the File pane of the EnerVista 369
Setup software main window.
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 Select the File > Properties menu item and verify that the corresponding file is
fully compatible with the hardware and firmware version of the target relay.
If the versions are not identical, see Upgrading Setpoint Files to a New Revision on
page 4–23 for details on changing the setpoints file version.
 Right-click on the selected file.
 Select the Write Settings to Device item.
 Select the target relay from the list of devices shown.
 Click Send.
If there is an incompatibility, an error will occur: If there are no incompatibilities
between the target device and the settings file, the data will be transferred to the
relay. An indication of the percentage completed will be shown in the bottom of
the main window.
4.5
Upgrading Relay Firmware
4.5.1
Description
To upgrade the 369 Relay firmware, follow the procedures listed in this section. Upon
successful completion of this procedure, the 369 Relay will have new firmware installed
with the original setpoints.
The latest firmware files are available from the GE Multilin website at http://
www.gedigitalenergy.com.
4.5.2
Saving Setpoints to a File
Before upgrading firmware, it is very important to save the current 369 Relay settings to a
file on your PC. After the firmware has been upgraded, it will be necessary to load this file
back into the 369 Relay.
Refer to Downloading and Saving Setpoints Files on page 4–14 for details on saving relay
setpoints to a file.
4.5.3
Loading New Firmware
Loading new firmware into the 369 Relay flash memory is accomplished as follows:
 Connect the relay to the local PC and save the setpoints to a file as shown in
Downloading and Saving Setpoints Files on page 4–14.
 Select the Communications > Update Firmware menu item.
The following warning message will appear: Select Yes to proceed or No the
cancel the process.
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 Do NOT proceed unless you have saved the current setpoints.
The EnerVista 369 Setup software will request the new firmware file.
 Locate the firmware file to load into the 369 Relay.
The firmware filename has the following format:
53 CMC 320 . 000
Modification Number (000 = None)
Firmware Version (320 = 3.20)
Internal Identifier
Product Code (53 = 369)
The EnerVista 369 Setup software automatically lists all filenames beginning with
‘53’.
 Select the appropriate file.
 Click OK to continue.
The software will prompt with another Upload Firmware Warning window. This will
be the final chance to cancel the firmware upgrade before the flash memory is
erased.
 Click Yes to continue or No to cancel the upgrade.
The EnerVista 369 Setup software now prepares the 369 Relay to receive the new
firmware file. The 369 Relay will display a message indicating that it is in Upload
Mode. While the file is being loaded into the 369 Relay, a status box appears
indicating how much of the new firmware file has been transferred and how much
is remaining, as well as the upgrade status. The entire transfer process takes
approximately five minutes.
The EnerVista 369 Setup software will notify the user when the 369 Relay has
finished loading the file.
 Carefully read any displayed messages.
 Click OK to return the main screen.
Cycling power to the relay is highly recommended after a firmware upgrade.
Note
NOTE
After successfully updating the 369 Relay firmware, the relay will not be in service and will
require setpoint programming. To communicate with the relay, the following settings will
have to be manually programmed.
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SLAVE ADDRESS
BAUD RATE
PARITY (if applicable)
When communications is established, the saved setpoints must be reloaded back into the
relay. See Loading Setpoints from a File on page 4–25 for details.
Modbus addresses assigned to firmware modules, features, settings, and corresponding
data items (i.e. default values, min/max values, data type, and item size) may change
slightly from version to version of firmware.
The addresses are rearranged when new features are added or existing features are
enhanced or modified. The EEPROM DATA ERROR message displayed after upgrading/
downgrading the firmware is a resettable, self-test message intended to inform users that
the Modbus addresses have changed with the upgraded firmware. This message does not
signal any problems when appearing after firmware upgrades.
4.6
Advanced EnerVista 369 Setup Features
4.6.1
Triggered Events
While the interface is in either on-line or off-line mode, data generated by triggered
specified parameters can be viewed and analyzed via one of the following features:
• Event Recorder: The event recorder captures contextual data associated with the
last 512 events, listed in chronological order from most recent to the oldest.
• Oscillography: The oscillography waveform traces and digital states provide a
visual display of power system and relay operation data captured during specific
triggered events.
4.6.2
Trending
Trending from the 369 Relay is accomplished via EnerVista 369 Setup. Many different
parameters can be trended and graphed at sampling periods from 1 second up to 1 hour.
The parameters which can be trended by EnerVista 369 Setup are:
• Currents/Voltages: phase currents A/B/C; average phase current; motor load;
current unbalance; ground current; and voltages Vab, Vbc, Vca Van, Vbn and Vcn
• Power: power factor; real power (kW); reactive power (kvar); Apparent Power (kVA);
positive watthours; positive varhours; and negative varhours
• Temperature: Hottest Stator RTD; RTDs 1 through 12; and RRTDs 1 through 12
• Other: thermal capacity used and system frequency
 To use the Trending function, run the EnerVista 369 Setup software and establish
communications with a connected 369 Relay unit.
 Select the Actual > Trending menu item to open the Trending window.
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FIGURE 4–4: Trending View
 Program the parameters to display by selecting them from the pull down menus.
 Select the Sample Rate.
 Select RUN to begin the trending sampling.
The trended values can be printed using Print Trending Graph button.
The Trending File Setup button can be used to write the graph data to a file in a
standard spreadsheet format.
 Ensure that the Write Trended Data to File box is checked, and that the Sample
Rate is at a minimum of 5 seconds.
 Set the file capacity limit to the amount of memory available for trended data.
4.6.3
Waveform Capture (Trace Memory)
The EnerVista 369 Setup software can be used to capture waveforms (or view trace
memory) from the 369 Relay relay at the instance of a trip. A maximum of 16 cycles can be
captured and the trigger point can be adjusted to anywhere within the set cycles. The last
three waveform events are viewable.
The following waveforms can be captured:
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• Phase A, B, and C currents (Ia, Ib, and Ic)
• Ground and current (Ig)
• Phase A-N, B-N, and C-N voltages (Van, Vbn, and Vcn) if wye-connected
Phase A-B and C-B (Vab and Vcb) if open-delta connected
• Digital data for output relays and contact input states.
 With the EnerVista 369 Setup software running and communications established,
select the Actual > Waveform Capture menu item to open the waveform capture
setup window:
 Click on Trigger Waveform to trigger a waveform capture.
The waveform file numbering starts with the number zero in the 369 Relay;
therefore, the maximum trigger number will always be one less then the total
number triggers available.
 Click on the Save to File button to save the selected waveform to the local PC.
A new window will appear requesting for file name and path.
The file is saved as a COMTRADE File, with the extension ‘CFG’. In addition to the
COMTRADE file, two other files are saved. One is a CSV (comma delimited values)
file, which can be viewed and manipulated with compatible third-party software.
The other file is a DAT File, required by the COMTRADE file for proper display of
waveforms.
 To view a previously saved COMTRADE File, click the Open button.
 Select the corresponding COMTRADE File.
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 To view the captured waveforms, click the Launch Viewer button.
A detailed Waveform Capture window will appear as shown below:
FIGURE 4–5: Waveform Capture Window Attributes
The red vertical line indicates the trigger point of the relay.
The date and time of the trip is displayed at the top left corner of the window. To
match the captured waveform with the event that triggered it, make note of the
time and date shown in the graph. Then, find the event that matches the same
time and date in the event recorder. The event record will provide additional
information on the cause and the system conditions at the time of the event.
Additional information on how to download and save events is shown in Event
Recorder on page 4–40.
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4.6.4
CHAPTER 4: USER INTERFACES
Motor Start Data Logger
In addition to the learned information captured for every start, the Motor Start Data
Logger will record up to 30 seconds of digital and analog waveforms during motor starts.
Captured information includes:
• Individual and average phase current
• Current unbalance
• Ground current
• Individual and average phase voltages
• Thermal capacity used
• System frequency
• Breaker status contact
• Motor speed (low/high)
4.6.5
Data Logger
The user-configurable Data Logger allows users to trend information to help configure
protection setpoints, as well as to schedule preventative maintenance. The Data Logger:
• allows trending of up to 16 analog or digital parameters at a time
• allows trending of any metered or calculated analog value within a provided list
• allows trending of digital input and output states
• stores all trended information in the relay’s volatile memory (RAM)
• allows user-configurable resolution of trending from 1 second to 1 hour (3600s)
• allows up to 50 Logs to be created
• is available only with the Enhanced “E” option.
4.6.5.1 Support in Enervista PC Software
Enervista PC Program supports the Data Logger on two screens on the Online Device
tree:
4–32
1.
Setpoints: Settings > S1 Setup > Data Logger
2.
Actual Values: Actual Values > A1 Motor Status > Data Logger
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4.6.5.2 Setpoints
Users can configure the Data Logger Settings from Settings > S1 Setup > Data Logger
A typical Data Logger Settings screen is as follows:
The Settings in the Data Logger screen are:
Log Interval : The user can configure the Data Logger interval 1 sec to 3600 sec
Recording Type : The user can select from the two available methods of logging.
Run to Fill: Allows logging of Channel data until the memory is full, then stops.
Circulate: Allows continuous logging of Channel data .
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4.6.5.3 Channel 1 to 16 Assignment
Users can configure 16 channels from the available 102 inputs (97 Analog inputs and 5
Digital Inputs/Outputs) from the screen.
The following is the list of Inputs which can be assigned to any of the 16 Channels:
4–34
1
Motor Thermal
Capacity Used
35
Local RTD #5
Temperature
69
RRTD 2 - RTD #7
Temperature
2
Digital Input and
Output Relays Status
36
Local RTD #6
Temperature
70
RRTD 2 - RTD #8
Temperature
3
Phase A Current
37
Local RTD #7
Temperature
71
RRTD 2 - RTD #9
Temperature
4
Phase B Current
38
Local RTD #8
Temperature
72
RRTD 2 - RTD #10
Temperature
5
Phase C Current
39
Local RTD #9
Temperature
73
RRTD 2 - RTD #11
Temperature
6
Average Phase
Current
40
Local RTD #10
Temperature
74
RRTD 2 - RTD #12
Temperature
7
Motor Load
41
Local RTD #11
Temperature
75
RRTD 3 - RTD #1
Temperature
8
Current Unbalance
42
Local RTD #12
Temperature
76
RRTD 3 - RTD #2
Temperature
9
Unbalanced Biased
Motor Load
43
Current Demand
77
RRTD 3 - RTD #3
Temperature
10
Ground Current
44
Real Power Demand
78
RRTD 3 - RTD #4
Temperature
11
Vab
45
Reactive Power
Demand
79
RRTD 3 - RTD #5
Temperature
12
Vbc
46
Apparent Power
Demand
80
RRTD 3 - RTD #6
Temperature
13
Vca
47
Peak Current Demand
81
RRTD 3 - RTD #7
Temperature
14
Average Line Voltage
48
Peak Real Power
Demand
82
RRTD 3 - RTD #8
Temperature
15
Van
49
Peak Reactive Power
Demand
83
RRTD 3 - RTD #9
Temperature
16
Vbn
50
Peak Apparent Power
Demand
84
RRTD 3 - RTD #10
Temperature
17
Vcn
51
RRTD 1 - RTD #1
Temperature
85
RRTD 3 - RTD #11
Temperature
18
Average Phase
Voltage
52
RRTD 1 - RTD #2
Temperature
86
RRTD 3 - RTD #12
Temperature
19
System Frequency
53
RRTD 1 - RTD #3
Temperature
87
RRTD 4 - RTD #1
Temperature
20
Power Factor
54
RRTD 1 - RTD #4
Temperature
88
RRTD 4 - RTD #2
Temperature
21
Real Power (kW)
55
RRTD 1 - RTD #5
Temperature
89
RRTD 4 - RTD #3
Temperature
22
Real Power (hp)
56
RRTD 1 - RTD #6
Temperature
90
RRTD 4 - RTD #4
Temperature
23
Reactive Power
57
RRTD 1 - RTD #7
Temperature
91
RRTD 4 - RTD #5
Temperature
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24
Apparent Power
58
RRTD 1 - RTD #8
Temperature
92
RRTD 4 - RTD #6
Temperature
25
Positive
MegaWatthours
59
RRTD 1 - RTD #9
Temperature
93
RRTD 4 - RTD #7
Temperature
26
Positive Megavarhours
60
RRTD 1 - RTD #10
Temperature
94
RRTD 4 - RTD #8
Temperature
27
Negative
Megavarhours
61
RRTD 1 - RTD #11
Temperature
95
RRTD 4 - RTD #9
Temperature
28
Positive KiloWatthours
62
RRTD 1 - RTD #12
Temperature
96
RRTD 4 - RTD #10
Temperature
29
Positive Kilovarhours
63
RRTD 2 - RTD #1
Temperature
97
RRTD 4 - RTD #11
Temperature
30
Negative Kilovarhours
64
RRTD 2 - RTD #2
Temperature
98
31
Local RTD #1
Temperature
65
RRTD 2 - RTD #3
Temperature
99
32
Local RTD #2
Temperature
66
RRTD 2 - RTD #4
Temperature
100
33
Local RTD #3
Temperature
67
RRTD 2 - RTD #5
Temperature
101
34
Local RTD #4
Temperature
68
RRTD 2 - RTD #6
Temperature
102
RRTD 4 - RTD #12
Temperature
RRTD 1 – Digital Input
and Output Relays
Status
RRTD 2 – Digital Input
and Output Relays
Status
RRTD 3 Digital Input
and Output Relays
Status
RRTD 4 Digital Input
and Output Relays
Status
4.6.5.4 Actual Values
Actual Values > A1 Motor Status > Data Logger
This screen can be used to monitor the Datalog status , View and Save the Datalog, as well
as perform the Start/Stop operation on the Data Logger.
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A typical Actual Values screen is as follows:
4.6.5.5 Log Status
Log Status displays the current state of the Data Logger, either Running or Stopped.
Memory Used displays the memory usage in % of total memory of the data logger which
varies from 0 to 100 %.
4.6.5.6 Log Selection and Waveform View
Select Log allows the user to select a Log from the available logs ( maximum 50 logs
available).
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Launch Viewer button allows the user to launch and view the trend for the selected log
from the drop down box.
Save to File button allows the user to save the selected log as .CSV and .CFG file which
can be opened from the viewer (setup software) in offline mode.
Open button allows the user to open CSV and CFG files in offline mode and view the
trending information from a Log.
4.6.5.7 Start /Stop/Clear Operations on the Datalogger
Start Log button allows the user to start a new Log in the Datalogger.
Stop Log button allows the user to stop a Log that is currently running
Clear Logs button allows the user to clear all the available Logs in the Datalogger
memory.
Total Logs Since Last Clear displays the number of Logs generated in data logger since
the last time the datalogger was cleared. The number varies from 0 to 65535. Starting a
new Log increments this value by 1. Clicking on Clear Logs reverts this value to 0.
4.6.5.8 Log information grid
Log column displays the Log numbers that are currently available in the Datalogger
memory
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Log Start Time column displays the Date and Time (in MM/DD/YYYY, HH:MM:SS format)
when the corresponding Log is generated
Start Method column displays the method by which the Log is started . This value can be
either
• Manual Start - if the Log is generated by clicking the Start button
• Motor Start - if the Log is generated when the Motor is started from the OFF state.
Stop Method column displays the method by which the Log is stopped . This value can
be either
• Manual Stop - if the Log is stopped by clicking the Stop button
• Motor Stop - if the Log is stopped when the motor is stopped from the Running
state.
Records column displays the number of records stored in each Log.
4.6.5.9 Grid Update
If the screen is kept open when the Data Log is running, information in the grid is
automatically updated in the following cases:
• Start of a new Log (either manual start or motor start)
• Stopping the current Log (either manual stop or motor stop)
• Any of the existing Logs are erased when the log is running in Circulate mode
• Clearing the existing Logs.
If any of the above events do not occur, the data log screen will be updated
automatically every 60 seconds.
Note
NOTE
4.6.6
Motor Health Report
This reporting function is included with every 369 relay, providing critical information on
the historical operating characteristics of your motor during motor starting and stopping
operations. Included in the report are:
• Trip summary
• Motor operation historical timeline, displaying start, emergency restart, stop, trip,
and alarm conditions
• Motor starting learned information (trending information over a maximum of 1250
motor start operations)
• Motor start data logger trends, including current, current unbalance, voltage,
frequency, TCU, breaker contact status during start, and motor speed (low/high).
4.6.7
Phasors
The EnerVista 369 Setup software can be used to view the phasor diagram of three-phase
currents and voltages. The phasors are for: Phase Voltages Va, Vb, and Vc; Phase Currents
Ia, Ib, and Ic.
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 With the EnerVista 369 Setup software running and communications established,
open the Actual Values > Metering Data window, then
 Click on the Phasors tab.
The EnerVista 369 Setup software will display the following window:
 Press the “View” button to display the following window:
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The 369 Motor Management Relay was designed to display lagging angles.
Therefore, if a system condition would cause the current to lead the voltage by 45°,
the 369 Relay relay will display such angle as 315° Lag instead of 45° Lead.
When the currents and voltages measured by the relay are zero, the angles displayed
by the relay and those shown by the EnerVista 369 Setup software are not fixed values.
4.6.8
Event Recorder
The 369 Relay event recorder can be viewed through the EnerVista 369 Setup software.
The event recorder stores motor and system information each time an event occurs (e.g.
breaker failure). The 369 Relay supports 512 event records. Event 512 is the most recent
event and Event 001 is the oldest event. Event 001 is overwritten whenever a new event
occurs. Refer to the Event Records section for additional information on the event recorder.
Use the following procedure to view the event recorder with EnerVista 369 Setup:
 With EnerVista 369 Setup running and communications established, select the
Actual > A5 Event Recorder item from the main menu.
This displays the Event Recorder window indicating the list of recorded events,
with the most current event displayed first.
 To view detailed information for a given event and the system information at the
moment of the event occurrence, change the event number on the Select Event
box.
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4.6.9
ADVANCED ENERVISTA 369 SETUP FEATURES
Modbus User Map
The EnerVista 369 Setup software provides a means to program the 369 Relay User Map
(Modbus addresses 0180h to 01FCh). Refer to User Definable Memory Map Area in the 369
Communications Guide for additional information on the User Map.
 Select a connected device in EnerVista 369 Setup.
 Select the Setpoint > User Map menu item to open the following window.
The above window allows the desired addresses to be written to User Map
locations. The User Map values that correspond to these addresses are then
displayed.
4.6.10 Viewing Actual Values
You can view real-time relay data such as input/output status and measured parameters.
From the main window menu bar, selecting Actual Values opens a window with tabs, each
tab containing data in accordance to the following list:
• Motor Status: Motor, Last Trip, Alarm Status, Start Inhibit, Local DI Status, Local
Relay Outputs, and Real Time Clock
• Metering Data: Currents, Voltages, Power, Backspin, Local RTDs, Demand, Phasor,
and RRTDs 1 to 4
• Learned Data: Motor Learned Data, Local RTD Maximums, RRTD 1 to 4 Maximums
• Statistical Data: Trip Counters and Motor Statistics
• Product Information: Revision Codes and Calibration Dates
Selecting an actual values window also opens the actual values tree from the
corresponding device in the site list and highlights the current location in the hierarchy.
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
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USING ENERVISTA VIEWPOINT WITH THE 369 RELAY
CHAPTER 4: USER INTERFACES
For complete details on actual values, refer to Chapter 6.
 To view a separate window for each group of actual values, select the desired item
from the tree.
 Double click with the left mouse button.
Each group will be opened on a separate tab. The windows can be rearranged to
maximize data viewing as shown in the following figure (showing actual current,
voltage, and power values tiled in the same window):
4.7
Using EnerVista Viewpoint with the 369 Relay
4.7.1
Plug and Play Example
EnerVista Viewpoint is an optional software package that puts critical 369 Relay
information onto any PC with plug-and-play simplicity. EnerVista Viewpoint connects
instantly to the 369 Relay via serial, ethernet or modem and automatically generates
detailed overview, metering, power, demand, energy and analysis screens. Installing
EnerVista Launchpad (see previous section) allows the user to install a fifteen-day trial
version of enerVista Viewpoint. After the fifteen day trial period you will need to purchase a
license to continue using enerVista Viewpoint. Information on license pricing can be found
at http://www.enerVista.com.
 Install the EnerVista Viewpoint software from the GE enerVista CD.
 Ensure that the 369 Relay device has been properly configured for either serial or
Ethernet communications (see previous sections for details).
 Click the Viewpoint window in EnerVista to log into EnerVista Viewpoint.
At this point, you will be required to provide a login and password if you have not
already done so.
FIGURE 4–6: enerVista Viewpoint Main Window
 Click the Device Setup button to open the Device Setup window.
4–42
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CHAPTER 4: USER INTERFACES
USING ENERVISTA VIEWPOINT WITH THE 369 RELAY
 Click the Add Site button to define a new site.
 Enter the desired site name in the Site Name field.
If desired, a short description of site can also be entered along with the display
order of devices defined for the site.
 Click the OK button when complete.
The new site will appear in the upper-left list in the EnerVista 369 Setup window.
 Click the Add Device button to define the new device.
 Enter the desired name in the Device Name field and a description (optional) of the
site.
 Select the appropriate communications interface (Ethernet or Serial) and fill in the
required information for the 369 Relay.
See Connecting EnerVista 369 Setup to the Relay on page 4–6 for details.
FIGURE 4–7: Device Setup Screen (Example)
 Click the Read Order Code button to connect to the 369 Relay device and upload
the order code.
If a communications error occurs, ensure that communications values entered in
the previous step correspond to the relay setting values.
 Click OK when complete.
 From the EnerVista main window, select the IED Dashboard item to open the Plug
and Play IED dashboard.
An icon for the 369 Relay will be shown.
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
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USING ENERVISTA VIEWPOINT WITH THE 369 RELAY
CHAPTER 4: USER INTERFACES
FIGURE 4–8: ‘Plug and Play’ Dashboard
 Click the Dashboard button below the 369 Relay icon to view the device
information.
We have now successfully accessed our 369 Relay through EnerVista Viewpoint.
4–44
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
CHAPTER 4: USER INTERFACES
USING ENERVISTA VIEWPOINT WITH THE 369 RELAY
FIGURE 4–9: EnerVista Plug and Play Screens (Example)
For additional information on EnerVista viewpoint, please visit the EnerVista website at
http://www.EnerVista.com.
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
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USING ENERVISTA VIEWPOINT WITH THE 369 RELAY
4–46
CHAPTER 4: USER INTERFACES
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
GE
Digital Energy
369 Motor Management Relay
Chapter 5: Setpoints
Setpoints
5.1
Overview
5.1.1
Setpoints Main Menu
S1 SETPOINTS
369 SETUP
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
SETPOINT ACCESS
See page 5–4
DISPLAY PREFERENCES
See page 5–5
369 COMMUNICATIONS
See page 5–6
REAL TIME CLOCK
See page 5–9
WAVEFORM CAPTURE
See page 5–10
DATA LOGGER
See page 5–10
EVENT RECORDS
See page 5–12
MESSAGE SCRATCHPAD
See page 5–12
DEFAULT MESSAGES
See page 5–13
CLEAR/PRESET DATA
See page 5–14
MODIFY OPTIONS
See page 5–15
5–1
OVERVIEW
CHAPTER 5: SETPOINTS
S2 SETPOINTS
SYSTEM SETUP
FACTORY SERVICE
See page 5–15
CT/VT SETUP
See page 5–16
MONITORING SETUP
See page 5–18
BLOCK FUNCTIONS
S3 SETPOINTS
OVERLOAD PROTECTION
S4 SETPOINTS
CURRENT ELEMENTS
S5 SETPOINTS
MOTOR START/INHIBITS
S6 SETPOINTS
RTD TEMPERATURE1
5–2
OUTPUT RELAY SETUP
See page 5–24
CONTROL FUNCTIONS
See page 5–25
THERMAL MODEL
See page 5–35
OVERLOAD CURVES
See page 5–37
OVERLOAD ALARM
See page 5–47
SHORT CIRCUIT
See page 5–47
MECHANICAL JAM
See page 5–48
UNDERCURRENT
See page 5–49
CURRENT UNBALANCE
See page 5–50
GROUND FAULT
See page 5–51
ACCELERATION TRIP
See page 5–54
START INHIBIT
See page 5–55
BACKSPIN DETECTION
See page 5–56
LOCAL RTD PROTECTION2
See page 5–57
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
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OVERVIEW
S7 SETPOINTS
VOLTAGE ELEMENTS
S8 SETPOINTS
POWER ELEMENTS4
S9 SETPOINTS
DIGITAL INPUTS
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
REMOTE RTD PROTECTN3
See page 5–59
OPEN RTD ALARM
See page 5–61
SHORT/LOW RTD ALARM
See page 5–62
LOSS OF RRTD COMMS
See page 5–63
UNDERVOLTAGE4
See page 5–63
OVERVOLTAGE4
See page 5–64
PHASE REVERSAL
See page 5–65
UNDERFREQUENCY
See page 5–67
OVERFREQUENCY
See page 5–68
LEAD POWER FACTOR
See page 5–70
LAG POWER FACTOR
See page 5–70
POSITIVE REACTIVE
POWER (kvar)
See page 5–71
NEGATIVE REACTIVE
POWER (kvar)
See page 5–72
UNDERPOWER
See page 5–73
REVERSE POWER
See page 5–74
SPARE SWITCH
See page 5–77
EMERGENCY RESTART
See page 5–78
DIFFERENTIAL
See page 5–78
SPEED SWITCH
See page 5–79
REMOTE RESET
See page 5–80
5–3
S1 369 SETUP
CHAPTER 5: SETPOINTS
S10 SETPOINTS
ANALOG OUTPUTS
ANALOG OUTPUT 1
See page 5–80
ANALOG OUTPUT 2
ANALOG OUTPUT 3
ANALOG OUTPUT 4
S11 SETPOINTS
369 TESTING
S12 SETPOINTS
TWO-SPEED MOTOR
TEST OUTPUT RELAYS
See page 5–83
TEST ANALOG OUTPUTS
See page 5–84
SPEED2 O/L CURVES
See page 5–85
SPEED2 UNDERCURRENT
See page 5–87
SPEED2 ACCELERATION
See page 5–88
1.Only shown if option R installed or Channel 3 Application is programmed as RRTD
2.Only shown if option R installed
3.Only shown if Channel 3 Application is programmed as RRTD
4.Only shown if option M or B are installed
5.2
S1 369 Setup
5.2.1
Setpoint Access
PATH: S1 369 SETUP  SETPOINT ACCESS
SETPOINT ACCESS
FRONT PANEL ACCESS:
Read & Write
Range: Read Only, Read & Write
COMM ACCESS
Read & Write
Range: Read Only, Read & Write
ENCRYPTED COMM
PASSCODE: AIKFBAIK
Range: 8 alphabetic characters
There are two levels of access security: “Read Only” and “Read & Write”. The access
terminals (57 and 58) must be shorted to gain read/write access via the front panel. The
FRONT PANEL ACCESS setpoint indicates the access level based on the condition of the
access switch. If set to “Read Only”, setpoints and actual values may be viewed but, not
changed. If set to “Read & Write”, actual values may be viewed and setpoints changed and
stored.
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Communication access can be changed with EnerVista 369 Setup via the Setpoint > S1
Setup menu. An access tab is shown only when communicating with the relay. To set a
password, click the Change Password button, then enter and verify the new passcode.
After a passcode is entered, setpoint access changes to “Read Only”. When setpoints are
changed through EnerVista 369 Setup during read-only access, the passcode must be
entered to store the new setpoint. To allow extended write access, click Allow Write
Access and enter the passcode. To return the access level to read-only, click Restrict
Write Access. Access automatically reverts to read-only after 30 minutes of inactivity or if
control power is cycled.
If the access level is Read/Write, write access to setpoints is automatic and a 0 password
need not be entered. If the password is not known, consult the factory service department
with the ENCRYPTED COMM PASSCODE value to be decoded.
5.2.2
Display Preferences
PATH: S1 369 SETUP  DISPLAY PREFERENCES
DISPLAY PREFERENCES
DEFAULT MESSAGE
CYCLE TIME: 20 s
Range: 5 to 100 s in steps of 1
DEFAULT MESSAGE
TIMEOUT: 300 s
Range: 10 to 900 s in steps of 1
FLASH MESSAGE
DURATION: 2s
Range: 1 to 10 s in steps of 1
TEMPERATURE DISPLAY: Range: Celsius, Fahrenheit
Shown if option R installed or RRTD added
Celsius
ENERGY UNIT DISPLAY: Range: Mega, kilo
Shown only if option M or B installed
Mega
If no keys are pressed for the time defined by the DEFAULT MESSAGE TIMEOUT , the
369 automatically displays a series of default messages. This time can be modified to
ensure messages remain on the screen long enough during programming or reading of
actual values. Each default message remains on the screen for the default message cycle
time.
Flash messages are status, warning, error or information messages displayed for several
seconds in response to certain key presses during setpoint programming. These messages
override any normal messages. The duration of a flash message on the display can be
changed to accommodate different reading rates.
Temperatures may be displayed in either Celsius or Fahrenheit degrees. RTD setpoints are
programmed in Celsius only.
The energy units for watthours and varhours can be viewed in either “Mega” (MWh or
Mvarh) or “kilo” (kWh or kvarh) units. Both registers accumulate energy regardless of the
preference set.
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S1 369 SETUP
5.2.3
CHAPTER 5: SETPOINTS
369 Communications
PATH: S1 369 SETUP  369 COMMUNICATIONS
369 COMMUNICATIONS
SLAVE ADDRESS:
254
Range: 1 to 254 in steps of 1
Range: 4800, 9600, 19200
COMPUTER RS232
BAUD RATE: 19200 Baud
COMPUTER RS232
PARITY: None
Range: None, Odd, Even
Range: 1200, 2400, 4800, 9600, 19200
CHANNEL 1 RS485
BAUD RATE: 19200 Baud
CHANNEL 1 RS485
PARITY: None
Range: None, Odd, Even
Range: 1200, 2400, 4800, 9600, 19200
CHANNEL 2: RS485
BAUD RATE: 19200 Baud
CHANNEL 2: RS485
PARITY: None
Range: None, Odd, Even
CHANNEL 3
APPLICATION: Modbus
Range: Modbus, RRTD
CHANNEL 3
CONNECTION: RS485
Range: RS485, Fiber.
Only shown if option F is installed.
Range: 1200, 2400, 4800, 9600, 19200
CHANNEL 3 RS485
BAUD RATE: 19200 Baud
CHANNEL 3 RS485
PARITY: None
5–6
Range: None, Odd, Even
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S1 369 SETUP
RRTD #1 ADDRESS1:
RRTD not available
Range: 0 to 254 in steps of 1 or RRTD not available
RRTD #2 ADDRESS1:
RRTD not available
Range: 0 to 254 in steps of 1 or RRTD not available
RRTD #3 ADDRESS1:
RRTD not available
Range: 0 to 254 in steps of 1 or RRTD not available
RRTD #4 ADDRESS1:
RRTD not available
Range: 0 to 254 in steps of 1 or RRTD not available
PROFIBUS ADDRESS:
125
Range: 1 to 126 in steps of 1
Only in models with Profibus (Option P or P1)
PROFIBUS CYCLIC IN
DATA: Default Map
Range: 0 (use Default Input Data Map) to 110 registers
Only in models with Profibus-DPV1 (option P1)
FIELDBUS LOSS OF
COMMUNICATION: Off
Range: Off, Latched, Unlatched
Only in models with Profibus, Ethernet &
DeviceNet Option (option P, P1,E & D)
FIELDBUS LOSS OF
COMMS DELAY2: 0.25 s
Range: 0.25 s to 10.0 s in steps of 0.25 s
Only in models with Profibus & Ethernet (option
P, P1, & E).
ASSIGN LOSS OF COMMS
RELAY2: Trip
Range: None, Trip, Alarm, Aux 1, Aux 2, or
combinations of these. Only in models with
Profibus & Ethernet (option P, P1, & E).
IP ADDRESS OCTET 1:
127
Range: 0 to 255 in steps of 1
Shown only with Modbus/TCP (Option E)
IP ADDRESS OCTET 2:
0
Range: 0 to 255 in steps of 1
Shown only with Modbus/TCP (Option E)
IP ADDRESS OCTET 3:
0
Range: 0 to 255 in steps of 1
Shown only with Modbus/TCP (Option E)
IP ADDRESS OCTET 4:
1
Range: 0 to 255 in steps of 1
Shown only with Modbus/TCP (Option E)
SUBNET MASK OCTET 1:
255
Range: 0 to 255 in steps of 1
Shown only with Modbus/TCP (Option E)
SUBNET MASK OCTET 2:
255
Range: 0 to 255 in steps of 1
Shown only with Modbus/TCP (Option E)
SUBNET MASK OCTET 3:
255
Range: 0 to 255 in steps of 1
Shown only with Modbus/TCP (Option E)
SUBNET MASK OCTET 4:
0
Range: 0 to 255 in steps of 1
Shown only with Modbus/TCP (Option E)
GATEWAY ADD. OCTET 1: Range: 0 to 255 in steps of 1
Shown only with Modbus/TCP (Option E)
127
GATEWAY ADD. OCTET 2: Range: 0 to 255 in steps of 1
Shown only with Modbus/TCP (Option E)
0
GATEWAY ADD. OCTET 3: Range: 0 to 255 in steps of 1
Shown only with Modbus/TCP (Option E)
0
GATEWAY ADD. OCTET 4: Range: 0 to 255 in steps of 1
Shown only with Modbus/TCP (Option E)
1
DEVICENET MAC ID:
63
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
Range: 0 to 63 in steps of 1
Shown only with DeviceNet (Option D)
5–7
S1 369 SETUP
CHAPTER 5: SETPOINTS
DEVICENET BAUD RATE:
125 kbps
Range: 125, 250, 500 kbps
Shown only with DeviceNet (Option D)
DEVICENET INPUT POLL
DATA: User-Defined
Range: Group 1, Group 2, User-Defined
Shown only with DeviceNet (Option D)
USER-DEFINED DATA
SIZE: 110 Registers
Range: 1 to 110 Registers
Shown only if DeviceNet Input Poll Data is
programmed as User-Defined
RESET FIELDBUS COMMS
INTERFACE: No
Range: No, Yes
Only in models with Profibus (Option P or P1),
DeviceNet (Option D), or Modbus/TCP (E)
1.RRTD units must be connected in order from RRTD #1 ADDRESS to RRTD #4 ADDRESS. If only one RRTD is used, it's slave address must
be programmed under RRTD #1 ADDRESS. The next RRTD to be connected would be set up under RRTD #2 ADDRESS, and so forth.
2.Only shown if "FIELDBUS LOSS OF COMMUNICATION" setting is not 'Off'
The 369 is equipped with four independent serial ports. The RS232 port is for local use and
responds regardless of the programmed slave address; the rear RS485 communication
ports are addressed. If an RRTD module is used in conjunction with the 369, channel 3 must
be used for communication between the two devices and the CHANNEL 3
APPLICATION setpoint must be set to “RRTD” (note that the corresponding RRTD setting
must be set to “Modbus”). A fiber optic port (option F) may be ordered for channel 3. If the
channel 3 fiber optic port is used, the channel 3 RS485 connection is disabled.
The RS232 port may be connected to a personal computer running EnerVista 369 Setup.
This may be used for downloading and uploading setpoints files, viewing actual values,
and upgrading the 369 firmware. See Section 4.2: EnerVista 369 Setup Interface on page –
3 for details on using EnerVista 369 Setup.
The RS485 ports support a subset of the Modbus RTU protocol. Each port must have a
unique address between 1 and 254. Address 0 is the broadcast address listened to by all
relays. Addresses need not be sequential; however, no two devices can have the same
address. Generally, each addition to the link uses the next higher address, starting at 1. A
maximum of 32 devices can be daisy-chained and connected to a DCS, PLC, or PC using
the RS485 ports. A repeater may be used to allow more than 32 relays on a single link.
Either Profibus-DP or Profibus-DPV1 communications are supported with the optional
Profibus protocol interface (option P or P1). The bus address of the Profibus-DP/V1 node is
set with the PROFIBUS ADDRESS setpoint, with an address range from 1 to 126. Address
126 is used only for commissioning purposes and should not be used to exchange user
data.
The RESET FIELDBUS COMMS INTERFACE setpoint command resets the Fieldbus
module. This allows the Fieldbus module to be reset if the Fieldbus module stops
communicating with the Fieldbus master, without having to shut down the motor and
cycle power to the relay.
The Modbus/TCP protocol is also supported with the optional Modbus/TCP protocol
interface (option E). For more information, refer to the 369 Communications Guide.
After changing or setting the IP address of the relay, please RESET FIELDBUS COMMS
INTERFACE or cycle the power supply of the 369 in order to make the new IP address
Note
NOTE
active.
The DeviceNet protocol is supported with the optional DeviceNet communication interface
(option D), and is certified as ODVA DeviceNet CONFORMANCE TESTED™. The DEVICENET
MAC ID sets the MAC ID with a range from 0 to 63. The DEVICENET BAUD RATE selects
5–8
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
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S1 369 SETUP
a baud rate of 125, 250, or 500 kbps. DeviceNet communications must be stopped before
changing DeviceNet setpoints. There will be a delay of 5 to 6 seconds for the new
DeviceNet settings to take effect.
Note
NOTE
Previous to FW v3.30 release, the FIELDBUS LOSS OF COMMUNICATION feature was
used in the 369 with Profibus Comm. option (P/P1) only and was referred to as “PROFIBUS
LOSS OF COMMUNICATION”. In FW v3.30 and V3.31 revisions, the FIELDBUS LOSS OF
COMMUNICATION feature is available for Profibus and Ethernet comm. options.
In FW v3.40 and later revisions, FIELDBUS LOSS OF COMMUNICATION feature is
available for Profibus, Ethernet and DeviceNet comm. options.
5.2.4
Real Time Clock
PATH: S1 369 SETUP  REAL TIME CLOCK
REAL TIME CLOCK
SET MONTH [1...12]:
09
Range: 1 to 12 in steps of 1
SET DAY [1...31]:
01
Range: 1 to 31 in steps of 1
SET
YEAR[1998...2097]:
Range: 1998 to 2097 in steps of 1
SET HOUR [0...23]:
00
Range: 0 to 23 in steps of 1
SET MINUTE [0...59]: Range: 0 to 59 in steps of 1
00
SET SECOND [0...59]: Range: 0 to 59 in steps of 1
00
The time/date stamp is used to track events for diagnostic purposes. The date and time
are preset but may be changed manually. A battery backed internal clock runs
continuously even when power is off. It has the same accuracy as an electronic watch
approximately ±1 minute per month. It may be periodically corrected either manually
through the keypad or via the clock update command over the serial link using EnerVista
369 Setup.
Enter the current date using two digits for the month and day, and four digits for the year.
For example, enter February 28, 2007 as “02 28 2007". If entered from the keypad, the new
date takes effect the moment [ENTER] is pressed. Set the time by using two digits for the
hour (in 24 hour time), minutes, and seconds. If entered from the keypad, the new time
takes effect the moment the [ENTER] key is pressed.
If the serial communication link is used, then all the relays can keep time in synchronization
with each other. A new clock time is pre-loaded into the memory map via the
communications port by a remote computer to each relay connected on the
communications channel. The computer broadcasts (address 0) a “set clock” command to
all relays. Then all relays in the system begin timing at the exact same instant. There can
be up to 100 ms of delay in receiving serial commands so the clock time in each relay is
±100 ms, ± the absolute clock accuracy, in the PLC or PC (see 369 Communications Guide
for information on programming the time and synchronizing commands.)
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
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S1 369 SETUP
5.2.5
CHAPTER 5: SETPOINTS
Waveform Capture
PATH: S1 369 SETUP  WAVEFORM CAPTURE
WAVEFORM CAPTURE
TRIGGER POSITION:
50 %
Range: 0 to 100% in steps of 1
Waveform capture records contain waveforms captured at the sampling rate as well as
contextual information at the point of trigger. These records are triggered by trip functions,
digital input set to capture or via the EnerVista 369 Setup software. Multiple waveforms are
captured simultaneously for each record: Ia, Ib, Ic, Ig, Va, Vb, and Vc.
The trigger position is programmable as a percent of the total buffer size (e.g. 10%, 50%,
etc.). The trigger position determines the number of pre- and post-fault cycles to divide the
record. The relay sampling rate is 16 samples per cycle.
5–10
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CHAPTER 5: SETPOINTS
5.2.6
S1 369 SETUP
Data Logger
PATH: SETTINGS  S1 369 SETUP 
DATA LOGGER
START/STOP DATA LOG: Range: Select Command, Start, Stop
Default: Select Command
Select Command
LOG INTERVAL:
3600 seconds
Range: 1 to 3600 seconds in steps of 1 s.
Default: 3600 sec
RECORDING TYPE:
Run To Fill
Range: Run To Fill, Circulate
Default: Run To Fill
CHANNEL 1:
None
Range: See format below
Default: None
CHANNEL 2:
None
Range: See format below
Default: None
CHANNEL 3:
None
Range: See format below
Default: None
CHANNEL 4:
None
Range: See format below
Default: None
CHANNEL 5:
None
Range: See format below
Default: None
CHANNEL 6:
None
Range: See format below
Default: None
CHANNEL 7:
None
Range: See format below
Default: None
CHANNEL 8:
None
Range: See format below
Default: None
CHANNEL 9:
None
Range: See format below
Default: None
CHANNEL 10:
None
Range: See format below
Default: None
CHANNEL 11:
None
Range: See format below
Default: None
CHANNEL 12:
None
Range: See format below
Default: None
CHANNEL 13:
None
Range: See format below
Default: None
CHANNEL 14:
None
Range: See format below
Default: None
CHANNEL 15:
None
Range: See format below
Default: None
CHANNEL 16:
None
Range: See format below
Default: None
START/STOP DATA LOG: It is possible to manually start or stop the data logger from the
369 front panel using this setpoint, or by writing to its associated Modbus address
(0x1E20). The value, once stored, will be acted upon and the displayed text will revert back
to “Select Command”. A new Log is started either using this command setpoint (manual), or
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
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CHAPTER 5: SETPOINTS
by a Motor Start (automatic). A Log will be stopped either using this command setpoint or
by a Motor Stop. If, however, the Log was started by command it will not be stopped by a
Motor Stop, only by a stop command.
LOG INTERVAL: This is the interval at which the data log will store entries. When the Data
Logger is started the first record will be immediately recorded. The following records will be
stored in increments of the interval time value.
RECORDING TYPE: If “Run To Fill” is selected, the Data Logger will stop logging records
once the Data Logger data memory area has been filled. If “Circulate” is selected, the Data
Logger will continue to log records until stopped, and will overwrite the oldest data stored
in the Data Log memory area once 100% has been utilized. In such a case, the Log will act
as a rolling window of data in time, going back as far as the maximum number of records
that will fit into the total Data Log memory.
CHANNEL x: There are up to 16 channels available to capture any of 101 different data
parameters available in the 369 relay with each Record. These parameters are described in
Modbus format code F189. (Refer to Format Code table in the 369 Communications Guide).
Please refer to Data Logger section in the 369 Communications Guide for more information
on the Data Logger feature.
5.2.7
Event Records
PATH: S1 369 SETUP  EVENT RECORDS
EVENT RECORDS
MOTOR STARTING
EVENTS: Off
Range: On, Off
MOTOR RUNNING
EVENTS: Off
Range: On, Off
MOTOR STOPPED
EVENTS: Off
Range: On, Off
See 6.6.1 Event Records on page 6–18 for details on viewing the event recorder.
5.2.8
Message Scratchpad
PATH: S1 369 SETUP  MESSAGE SCRATCHPAD
MESSAGE SCRATCHPAD
5–12
Text 1
Range: 2 x 20 alphanumeric characters
Text 2
Range: 2 x 20 alphanumeric characters
Text 3
Range: 2 x 20 alphanumeric characters
Text 4
Range: 2 x 20 alphanumeric characters
Text 5
Range: 2 x 20 alphanumeric characters
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Five 40-character message screens can be programmed. These messages may be notes
that pertain to the 369 installation. This can be useful for reminding operators of certain
tasks.
5.2.9
Default Messages
PATH: S1 369 SETUP  DEFAULT MESSAGES
DEFAULT MESSAGES
DEFAULT TO CURRENT
METERING: No
Range: Yes, No
DEFAULT TO MOTOR
LOAD: No
Range: Yes, No
Range: Yes, No
DEFAULT TO DELTA
Only shown if option M installed
VOLTAGE METERING: No
DEFAULT TO POWER
FACTOR: No
Range: Yes, No
Only shown if option M installed
DEFAULT TO POSITIVE
WATTHOURS: No
Range: Yes, No
Only shown if option M installed
DEFAULT TO REAL
POWER: No
Range: Yes, No
Only shown if option M installed
DEFAULT TO REACTIVE
POWER: No
Range: Yes, No
Only shown if option M installed
DEFAULT TO HOTTEST
STATOR RTD: No
Range: Yes, No. Only shown if option R is installed.
Indicates stator no. local to 369 only.
DEFAULT TO TEXT
MESSAGE 1: No
Range: Yes, No
DEFAULT TO TEXT
MESSAGE 2: No
Range: Yes, No
DEFAULT TO TEXT
MESSAGE 3: No
Range: Yes, No
DEFAULT TO TEXT
MESSAGE 4: No
Range: Yes, No
DEFAULT TO TEXT
MESSAGE 5: No
Range: Yes, No
DEFAULT TO HOTTEST
STATOR RTD TEMP: No
Range: Yes, No
Only shown if option R is installed
DEFAULT TO UNBALANCE Range: Yes, No. Shown only if unbalance biasing is
enabled in the Thermal Model.
BIASED MTR LOAD: No
The 369 displays a series of default messages. These default messages appear after the
value for the DEFAULT MESSAGE CYCLE TIME expires and there are no active trips,
alarms or start inhibits. See Section 5.2.2: Display Preferences on page –5 for details on
setting time delays and message durations. The default messages can be selected from
the list above including the five user definable messages from the message scratchpad.
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5.2.10 Clear/Preset Data
PATH: S1 369 SETUP  CLEAR/PRESET DATA
CLEAR/PRESET DATA
CLEAR ALL DATA:
No
Range: No, Yes
CLEAR LAST TRIP
DATA: No
Range: No, Yes
CLEAR TRIP
COUNTERS: No
Range: No, Yes
CLEAR EVENT
RECORD: No
Range: No, Yes
Clears all 512 events
CLEAR RTD
MAXIMUMS: No
Range: No, Yes
CLEAR PEAK DEMAND
DATA: No
Range: No, Yes
CLEAR MOTOR
DATA: No
Range: No, Yes. Clears learned motor data, last
starting current, last starting thermal capacity, last
acceleration time, motor statistics, motor start data
logger, and data logger
CLEAR ENERGY DATA:
NO
Range: No, Yes
Only shown if option M or B are installed.
PRESET MWh:
0
Range: 0 to 65535 MWh in steps of 1
Can be preset or cleared by storing 0
Only shown if option M or B are installed.
PRESET POSITIVE
Mvarh: 0
Range: 0 to 65535 Mvarh in steps of 1
Can be preset or cleared by storing 0
Only shown if option M or B are installed
PRESET NEGATIVE
Mvarh: 0
Range: 0 to 65535 Mvarh in steps of 1
Can be preset or cleared by storing 0
Only shown if option M or B are installed
PRESET DIGITAL
COUNTER: 0
Range: 0 to 65535 in steps of 1
Can be preset or cleared by storing 0
PRESET NUMBER OF
MOTOR STARTS: 0
Range: 0 to 50000 in steps of 1
PRESET NUM OF EMERG.
RESTARTS: 0
Range: 0 to 50000 in steps of 1
PRESET NUM OF MOTOR
RUNNING HOURS: 0
Range: 0 to 65535 in steps of 1
PRESET NUM OF AUTORESTRT ATMPTS: 0
Range: 0 to 50000 in steps of 1
These commands may be used to clear various historical data. This is useful on new
installations or to preset information on existing installations where new equipment has
been installed. The PRESET DIGITAL COUNTER setpoint appears only if one of the
digital inputs has been configured as a digital input counter.
Presetting the energy data is only available for “Mega” units. When these are preset, the
corresponding “Kilo” data will be preset to zero.
5–14
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5.2.11 Modify Options
PATH: S1 369 SETUP  MODIFY OPTIONS
MODIFY OPTIONS
ENABLE LOCAL RTD?
Yes
Range: No, Yes
METERING/BACKSPIN:
Metering
Range: No, Metering, Backspin
ENABLE FIBER OPTIC?
No
Range: No, Yes
ENABLE ETHERNET?
No
Range: No, Yes
ENABLE PROFIBUS-DP?
No
Range: No, Yes
ENABLE PROFIBUSDPV1?
Range: No, Yes
ENABLE DEVICENET?
No
Range: No, Yes
ENABLE HARSH ENV.?
No
Range: No, Yes
ENTER PASSCODE:
Range: Press the [ENTER] key to begin text editing
MODIFY OPTIONS?
No
Range: No, Yes
This page allows the user to modify relay options directly from the front keypad.
5.2.12 Factory Service
PATH: S1 369 SETUP  FACTORY SERVICE
FACTORY SERVICE
FACTORY SERVICE
PASSCODE: 0
Range: 0 to 65535
This page is for use by GE Multilin personnel for testing and calibration purposes
5.3
S2 System Setup
5.3.1
Description
The system setup setpoints are critical to the operation of the 369 protective and metering
features and elements. Most protective elements are based on the information input for
the CT/VT Setup and Output Relay Setup. Additional monitoring alarms and control
functions of the relay are also set here.
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5.3.2
CHAPTER 5: SETPOINTS
CT/VT Setup
PATH: S2 SYSTEM SETUP  CT/VT SETUP
CT/VT SETUP
PHASE CT PRIMARY:
500
Range: 1 to 5000 in steps of 1
MOTOR FLA:
10
Range: 1 to 5000 in steps of 1
GROUND CT TYPE:
5
Range: None, 5A secondary, 1A secondary, 50:0.025
GROUND CT PRIMARY:
100
Range: 1 to 5000 in steps of 1
Only shown for 5A and 1A secondary CT
ENABLE 2-SPEED MOTOR
PROTECTION: No
Range: Yes, No
SPEED2 PHASE CT:
PRIMARY1:500 A
Range: 1 to 5000 A in steps of 1
SPEED2 MOTOR FLA1:
10 A
Range: 1 to 5000 A in steps of 1
VT CONNECTION TYPE:
None
Range: None, Open Delta, Wye
Only shown if option M or B installed
VT RATIO:
35:1
Range: 1.00:1 to 240.00:1
Not shown if VT Connection Type set to None
MOTOR RATED VOLTAGE:
4160
Range: 100 to 20000 in steps of 1
Not shown if VT Connection Type set to None
NOMINAL FREQUENCY:
60 Hz
Range: 50 Hz, 60 Hz, Variable
SYSTEM PHASE
SEQUENCE: ABC
Range: ABC, ACB
SPEED2 SYSTEM PHASE
SEQUENCE1: ABC
Range: ABC, ACB
1.Only shown when “ENABLE 2-SPEED MOTOR PROTECTION” is set to “Yes”
5–16
•
PHASE CT PRIMARY: Enter the phase CT primary here. The phase CT secondary (1 A or
5A) is determined by terminal connection to the 369. The phase CT should be chosen
such that the motor FLA is between 50% and 100% of the phase CT primary. Ideally
the motor FLA should be as close to 100% of phase CT primary as possible, never
more. The phase CT class or type should also be chosen such that the CT can handle
the maximum potential fault current with the attached burden without having its
output saturate. Information on how to determine this if required is available in
Section 7.4: CT Specification and Selection on page –8.
•
MOTOR FLA: The motor FLA (full load amps or full load current) must be entered. This
value may be taken from the motor nameplate or motor data sheets.
•
GROUND CT TYPE and GROUND CT PRIMARY: The GROUND CT TYPE and GROUND
CT PRIMARY (if 5 A or 1 A secondary) must be entered here. For high resistance
grounded systems, sensitive ground detection is possible with the 50:0.025 CT. On
solidly or low resistance grounded systems where fault current can be quite high, a
1 A or 5 A CT should be used for either zero-sequence (core balance) or residual
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
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S2 SYSTEM SETUP
ground sensing. If a residual connection is used with the phase CTs, the phase CT
primary must also be entered for the ground CT primary. As with the phase CTs the
type of ground CT should be chosen to handle all potential fault levels without
saturating.
•
ENABLE 2-SPEED MOTOR: If set to Yes, the following new settings are shown:
1.
S2 SYSTEM SETUP/ CT/VT SETUP:
SPEED2 PHASE CT
SPEED2 MOTOR FLA
SPEED2 PHASE SEQUENCE
2.
S12 TWO SPEED MOTOR:
SPEED2 O/L CURVES
SPEED2 UNDERCURRENT
SPEED2 ACCELERATION
3.
S9 DIGITAL INPUTS/ SPEED SWITCH displays the message TWO SPEED
MONITOR . The Speed Switch option is added to setting range for:
S9 DIGITAL INPUTS/ EMERGENCY RESTART
S9 DIGITAL INPUTS/DIFFERENTIAL SWITCH
S9 DIGITAL INPUTS/REMOTE RESET.
•
SPEED2 PHASE CT: This setting specifies the CT primary of the CT used under Speed 2.
When in Speed 1, the existing CT primary found under S2 SYSTEM SETUP/ CT/VT
SETUP/PHASE CT PRIMARY is in effect.
•
SPEED2 MOTOR FLA: This setting specifies the FLA of the motor running at Speed 2.
When in Speed 1, the existing FLA found under S2 SYSTEM SETUP/ CT/VT SETUP/
MOTOR FLA is in effect.
•
VT CONNECTION TYPE, VT RATIO, and MOTOR RATED VOLTAGE: These voltage
related setpoints are visible only if the 369 has metering installed.
The manner in which the voltage transformers are connected must be entered here or
none if VTs are not used. The VT turns ratio must be chosen such that the secondary
voltage of the VTs is between 1 and 240 V when the primary is at motor nameplate
voltage. All voltage protection features are programmed as a percent of motor
nameplate or rated voltage which represents the rated motor design voltage line to
line.
For example: If the motor nameplate voltage is 4160 V and the VTs are 4160/120
open-delta, program VT CONNECTION TYPE to “Open Delta”, VT RATIO to “34.67:1”,
and MOTOR RATED VOLTAGE to “4160 V”.
•
NOMINAL FREQUENCY: Enter the nominal system frequency here.
The 369 has variable frequency functionality when the NOMINAL FREQUENCY is
set to “Variable”. All of the elements function in the same manner with the exception of
the voltage and power elements, which work properly if the voltage waveform is
approximately sinusoidal. When using a pulse width modulate drive, and an unfiltered
voltage waveform is present, the unit will not be able to accurately measure voltage,
but an approximately sinusoidal current waveform can be measured accurately. If the
NOMINAL FREQUENCY is set to “Variable”, the filtering algorithm could increase the
trip and alarm times for the undervoltage and underfrequency elements by up to 270
ms. If the level exceeds the threshold by a significant amount, trip and alarm times will
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decrease until they match the programmed delay. The exceptions to this increased
time are the short circuit and ground fault elements, which will trip as per
specification.
Note that when the NOMINAL FREQUENCY setting is “Variable”, the element pickup
levels and timing are based on the measured values of the 369.
Frequency is normally determined from the Va voltage input. If however this voltage
drops below the minimum voltage threshold the Ia current input will be used.
•
Note
NOTE
In motor Forward/Reverse applications, for proper power metering and phase reversal trip
protection, the system phase sequence must be set the same as the phase sequence for
the forward rotation of the motor.
•
5.3.3
SYSTEM PHASE SEQUENCE: If the phase sequence for a given system is ACB rather
than the standard ABC the phase sequence may be changed. This setpoint allows the
369 to properly calculate phase reversal and power quantities.
SPEED2 PHASE SEQUENCE: This setting specifies the phase rotation when running in
Speed 2. When in Speed 1, the phase rotation set under S2 SYSTEM SETUP/ CT/VT
SETUP/SYSTEM PHASE SEQUENCE is in effect.
The FLA rating defines the nominal loading of the motor, and differs depending on
motor speed. If ENABLE 2-SPEED MOTOR is set to “Yes”, and Speed Switch (TWO
SPEED MONITOR) digital input is detected “closed”, the relay automatically applies
the SPEED2 CT PRIMARY and SPEED2 FLA settings to all motor features that
previously were configured to utilize the Speed 1 settings: Thermal Model
OVERLOAD PICKUP LEVEL , OVERLOAD ALARM, SHORT CIRCUIT,
MECHANICAL JAM, CURRENT UNBALANCE, and SPEED2 UNDERCURRENT.
The 369 relay uses one Thermal Model for both speeds, and keeps the accumulated
thermal capacity during speed switching. Upon detection of Speed 2, the phase
sequence setting under SYSTEM SETUP/CT/VT SETUP/SPEED2 SYSTEM PHASE
SEQUENCE is used for power metering calculations.
For 2-speed motors rotating in the same direction (typically low/high-speed
applications) when in Speed 1 and Speed 2, the settings under SYSTEM SETUP/CT/
VT SETUP/SYSTEM PHASE SEQUENCE and under SYSTEM SETUP/CT/VT
SETUP/SPEED2 PHASE SEQUENCE are set the same.
For 2-speed motors changing the rotating direction (motor Forward/Reverse
applications), the setting ABC (ACB) under SYSTEM SETUP/CT/VT SETUP/SPEED2
PHASE SEQUENCE is set to be different than the setting ACB (ACB) under SYSTEM
SETUP/CT/VT SETUP/SYSTEM PHASE SEQUENCE. For these applications, the
motor is rotating with the same speed, but is designed and controlled to rotate in both
Forward and Reverse directions.
Monitoring Setup
Main Menu
PATH: S2 SYSTEM SETUP  MONITORING SETUP
MONITORING SETUP
5–18
TRIP COUNTER
See below.
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S2 SYSTEM SETUP
STARTER FAILURE
See page 5–20
LEARNED DATA
See page 5–20
CURRENT DEMAND
See page 5–21
kW DEMAND1
See page 5–21
kvar DEMAND1
See page 5–21
kVA DEMAND1
See page 5–21
SELF TEST MODE
See page 5–23
1.Only shown if option M or B are installed
Trip Counter
PATH: S2 SYSTEM SETUP  MONITORING SETUP  TRIP COUNTER
TRIP COUNTER
TRIP COUNTER
ALARM: Off
Range: Off, Latched, Unlatched
ASSIGN ALARM
RELAYS: Alarm
Range: None, Alarm, Aux1, Aux2, or combinations of
them
ALARM PICKUP LEVEL:
25 Trips
Range: 1 to 50000 in steps of 1
TRIP COUNTER ALARM
EVENTS: Off
Range: On, Off
When the Trip Counter is enabled and the alarm pickup level is reached, an alarm will
occur. To reset the alarm the trip counter must be cleared (see Section 5.2.10: Clear/Preset
Data on page –14 for details) or the pickup level increased and the reset key pressed (if a
latched alarm).
The trip counter alarm can be used to monitor and alarm when a predefined number of
trips occur. This would then prompt the operator or supervisor to investigate the causes of
the trips that have occurred. Details of individual trip counters can be found in the Motor
Statistics section of Actual Values page 4 (see Section 6.5.2: Motor Statistics on page –18).
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
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CHAPTER 5: SETPOINTS
Starter Failure
PATH: S2 SYSTEM SETUP  MONITORING SETUP  STARTER FAILURE
STARTER FAILURE
STARTER FAILURE
ALARM: Off
Range: Off, Latched, Unlatched
STARTER TYPE:
Breaker
Range: Breaker, Contactor
ASSIGN ALARM RELAYS: Range: None, Alarm, Aux1, Aux2, or combinations of
them
Alarm
STARTER FAILURE
DELAY: 100 ms
Range: 10 to 1000 ms in steps of 10
STARTER FAILURE
ALARM EVENTS: Off
Range: On, Off
If the Starter Failure alarm feature is enabled, any time the 369 initiates a trip, the 369 will
monitor the Starter Status input (if assigned to “Spare Switch” in S9 DIGITAL INPUTS) and
the motor current. If the starter status contacts do not change state or motor current does
not drop to zero after the programmed time delay, an alarm will occur. The time delay
should be slightly longer than the breaker or contactor operating time. In the event that an
alarm does occur, and Breaker was chosen as the starter type, the alarm will be Breaker
Failure. If on the other hand, Contactor was chosen for starter type, the alarm will be
Welded Contactor.
Learned Data
PATH: S2 SYSTEM SETUP  MONITORING SETUP  CURRENT DEMAND
LEARNED DATA
NUMBER OF STARTS TO
AVERAGE: 5
Range: 1 to 5 in steps of 1
The "Number of Starts to Average" determines how many starts occur before an "average"
record-set of data is stored to E2PROM.
The "Access Learned Data Record Number" Modbus address is used to determine what
data populates the Actual Values display and Modbus addresses from 0x03C0 to 0x03C4,
and 0x03C8 to 0x03CA. If the value in this Setpoint is zero, the data reflects the most
recent motor start. If the value is anything else, one of the 250 averaged records populates
these Actual Values.
5–20
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S2 SYSTEM SETUP
Demand
PATH: S2 SYSTEM SETUP  MONITORING SETUP  CURRENT DEMAND
CURRENT DEMAND
CURRENT DEMAND
PERIOD: 15 min
Range: 5 to 90 min in steps of 1
CURRENT DEMAND
ALARM: Off
Range: Off, Latched, Unlatched
ASSIGN ALARM RELAYS: Range: None, Alarm, Aux1, Aux2, or combinations of
them
Alarm
CURRENT DEMAND ALARM Range: 0 to 65000 A in steps of 1
LIMIT: 100 A
CURRENT DEMAND ALARM Range: On, Off
EVENTS: Off
kW DEMAND1
kW DEMAND
PERIOD: 15 min
Range: 5 to 90 min in steps of 1
kW DEMAND
ALARM: Off
Range: Off, Latched, Unlatched
ASSIGN ALARM RELAYS: Range: None, Alarm, Aux1, Aux2, or combinations of
them
Alarm
kvar DEMAND1
kW DEMAND ALARM
LIMIT: 100 kW
Range: 1 to 50000 kW in steps of 1
kW DEMAND ALARM
EVENTS: Off
Range: On, Off
kvar DEMAND
PERIOD: 15 min
Range: 5 to 90 min. in steps of 1
kvar DEMAND
ALARM: Off
Range: Off, Latched, Unlatched
ASSIGN ALARM RELAYS: Range: None, Alarm, Aux1, Aux2, or combinations of
them
Alarm
kVA DEMAND1
kvar DEMAND ALARM
LIMIT: 100 kvar
Range: 1 to 50000 kvar in steps of 1
kvar DEMAND ALARM
EVENTS: Off
Range: On, Off
kVA DEMAND
PERIOD: 15 min
Range: 5 to 90 min in steps of 1
kVA DEMAND
ALARM: Off
Range: Off, Latched, Unlatched
ASSIGN ALARM RELAYS: Range: None, Alarm, Aux1, Aux2, or combinations of
them
Alarm
kVA DEMAND ALARM
LIMIT: 100 kVA
Range: 1 to 50000 kVA in steps of 1
kVA DEMAND ALARM
EVENTS: Off
Range: On, Off
1.Only shown if option M or B are installed
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The 369 can measure the demand of the motor for several parameters (current, kW, kvar,
kVA). The demand values may be of interest for energy management programs where
processes may be altered or scheduled to reduce overall demand on a feeder. An alarm
will occur if the limit of any of the enabled demand elements is reached.
Demand is calculated in the following manner. Every minute, an average magnitude is
calculated for current, +kW, +kvar, and kVA based on samples taken every 5 seconds.
These values are stored in a FIFO (First In, First Out buffer). The size of the buffer is
determined by the period selected for the setpoint. The average value of the buffer
contents is calculated and stored as the new demand value every minute. Demand for real
and reactive power is only positive quantities (+kW and +kvar).
1
DEMAND = --N
N

Average ( n )
(EQ 0.1)
n=1
where: N = programmed demand period in minutes and n = time in minutes.
FIGURE 5–1: Rolling demand (15 minute window)
5–22
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S2 SYSTEM SETUP
Self-Test Relay Assignment
PATH: S2 SYSTEM SETUP  MONITORING SETUP  SELF TEST MODE
SELF TEST MODE
Range: None, Alarm, Aux1, Aux2, or combinations of
these
ASSIGN SERVICE
RELAY:
The 369 performs self-diagnostics of the circuitry. The relay programmed as the Self-Test
relay activates upon a failure of any self-diagnostic tests.
5.3.4
Block Functions
PATH: S2 SYSTEM SETUP  BLOCK FUNCTIONS
LOG BLOCKING EVENTS: Range: Enabled, Disabled
Disabled
BLOCK FUNCTIONS
BLOCK UC/UPWR (37)
Not Blocked
Block Undercurrent and Underpower
Range: Blocked, Not Blocked
BLOCK CURR UNBAL
(46)
Block Current Unbalance
Range: Blocked, Not Blocked
BLOCK INC SEQ (48)
Not Blocked
Block Incomplete Sequence
Range: Blocked, Not Blocked
BLOCK THERM MOD (49) Block Thermal Model
Range: Blocked, Not Blocked
Not Blocked
BLOCK SHORT CCT (50) Block Short Circuit and Backup
Range: Blocked, Not Blocked
Not Blocked
BLOCK O/L ALARM (51) Block Overload Alarm
Range: Blocked, Not Blocked
Not Blocked
BLOCK GND FLT (51G)
Not Blocked
Block Ground Fault
Range: Blocked, Not Blocked
BLOCK STARTS/HR (66) Block Starts Per Hour and Time Between Starts
Range: Blocked, Not Blocked
Not Blocked
The block functions feature allows the user to block any of the protection functions
through the following methods:
1.
Modbus command 20.
2.
Profibus-DPV1 acyclical communication (refer to Chapter 9 for additional details).
3.
Modbus setpoints.
4.
The front panel interface.
The protection functions that can be blocked are indicated by ANSI/IEEE device number in
the table below.
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
DEVICE
DESCRIPTION
37
Undercurrent/underpower
46
Current unbalance
48
Incomplete sequence
5–23
S2 SYSTEM SETUP
CHAPTER 5: SETPOINTS
DEVICE
DESCRIPTION
49
Thermal model
50
Short circuit and backup
51
Overload alarm
51G
Ground fault
66
Starts per hour / time between starts
Blocking a protection function is essentially the same as disabling it. If the protection
function is blocked and a situation occurs where it would have been activated (if enabled),
no indication will be given and no events are recorded. If the protection function has picked
up and/or is timing out, the internal timers will be reset to zero.
If the LOG BLOCKING EVENTS setpoint is enabled, an event will be stored indicating
when a function changes from being blocked to unblocked, or vice versa.
5.3.5
Output Relay Setup
PATH: S2 SYSTEM SETUP  OUTPUT RELAY SETUP
OUTPUT RELAY SETUP
TRIP RELAY RESET
MODE: All Resets
Range: All Resets, Remote Only, Local Only
TRIP RELAY
OPERATION: FS
Range: FS (=failsafe), NFS (=non-failsafe)
TRIP RELAY
SEAL-IN: None
Range: None, Starters Status Input
Only seen if setpoint SPARE SW FUNCTION is
"Starter Status"
Range: All Resets, Remote Only, Local Only
AUX1 RELAY RESET
MODE: All Resets
AUX1 RELAY
OPERATION: NFS
Range: FS (=failsafe), NFS (=non-failsafe)
AUX2 RELAY RESET
MODE: All Resets
Range: All Resets, Remote Only, Local Only
AUX2 RELAY
OPERATION: NFS
Range: FS (=failsafe), NFS (=non-failsafe)
ALARM RELAY RESET
MODE: All Resets
Range: All Resets, Remote Only, Local Only
ALARM RELAY
OPERATION: NFS
Range: FS (failsafe), NFS (=non-failsafe)
A latched relay (caused by a protective elements alarm or trip) may be reset at any time,
providing that the condition that caused the relay operation is no longer present.
Unlatched elements will automatically reset when the condition that caused them has
cleared. Reset location is defined in the following table.
5–24
RESET MODE
RESET PERFORMED VIA
All Resets
keypad, digital input, communications
Remote Only
digital input, communications
Local Only
keypad
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The TRIP OPERATION, AUX1 OPERATION, AUX2 OPERATION, and ALARM
OPERATION setpoints allow the choice of relay output operation to fail-safe or nonfailsafe. Relay latchcode however, is defined individually for each protective element.
Failsafe operation causes the output relay to be energized in its normal state and deenergized when activated by a protection element. A failsafe relay will also change state (if
not already activated by a protection element) when control power is removed from the
369. Conversely a non-failsafe relay is de-energized in its normal non-activated state and
will not change state when control power is removed from the 369 (if not already activated
by a protection element).
The choice of failsafe or non-failsafe operation is usually determined by the motor’s
application. In situations where the process is more critical than the motor, non-failsafe
operation is typically programmed. In situations where the motor is more critical than the
process, failsafe operation is programmed.
TRIP RELAY SEAL-IN: If the setpoint is set to “Starter Status”, the trip contact will remain
at the trip state (The fail-safe NO contact opens; the non-fail-safe NO contact closes)
unless the starter status is open and the trip initiating condition has reset, or the 369 is
manually reset. The feature can protect damage to trip relay contact in a breaker failure
condition. The starter status is derived from the digital input SPARE SWITCH, and the
setpoint SPARE SW FUNCTION in S9 DIGITAL INPUTS must be set to “Starter Status”
before enabling the feature.
Emergency Restart will ALWAYS reset the 369 regardless of the reset mode setting.
Note
NOTE
Latched trips and alarms are not retained after control power is removed from the 369.
Note
NOTE
5.3.6
Control Functions
Main Menu
PATH: S2 SYSTEM SETUP  CONTROL FUNCTIONS
CONTROL FUNCTIONS
SERIAL COMMUNICATION
CONTROL
See below.
REDUCED VOLTAGE
See page 5–26
AUTORESTART
See page 5–28
UNDERVOLTAGE
AUTORESTART1
See page 5–31
FORCE OUTPUT RELAYS
See page 5–33
1.Only shown if option M or B are installed.
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CHAPTER 5: SETPOINTS
Serial Communication Control
PATH: S2 SYSTEM SETUP  CONTROL FUNCTIONS  SERIAL
COMMUNICATION CONTROL
SERIAL COMMUNICATION
CONTROL
SERIAL COM CONTROL
CONTROL - Off
Range: On, Off
Range: None, Alarm, Aux1, Aux2 or combinations of
ASSIGN START
them
CONTROL RELAYS: Aux1
If enabled, the motor can be remotely started and stopped via Modbus® communications.
Refer to the Modbus Protocol Reference Guide (available from the Modbus website at http:/
/www.modbus.org) for details on sending commands (Function Code 5). When a Stop
command is sent the Trip relay will activate for 1 second to complete the trip coil circuit for
a breaker application or break the coil circuit for a contactor application. When a Start
command is issued the relay assigned for starting control will activate for 1 second to
complete the close coil circuit for a breaker application or complete the coil circuit for a
contactor application.
The Serial Communication Control functions can also be used to reset the relay and
activate a waveform capture. Refer to the Modbus Protocol Reference Guide (available
from the Modbus website at http://www.modbus.org) for more information.
Reduced Voltage Start Timer
PATH: S2 SYSTEM SETUP  CONTROL FUNCTIONS  REDUCED VOLTAGE
REDUCED VOLTAGE
REDUCED VOLTAGE
CONTROL: Off
Range: On, Off
ASSIGN START CONTROL Range: None, Alarm, Aux1, Aux2, Alarm & Aux1, Alarm
& Aux2, Aux1 & Aux2, Alarm & Aux1 & Aux2
RELAYS: None
START CONTROL RELAY
TIMER: 1.0 s
Range: 1.0 to 10.0 s in steps of 0.5
TRANSITION ON:
Current Only
Range: Current Only, Current or Timer, Current and
Timer
Range: 25 to 300% FLA in steps of 1
REDUCED VOLTAGE
START LEVEL: 100%FLA
REDUCED VOLTAGE
START TIMER: 200 s
Range: 1 to 500 s in steps of 1
ASSIGN TRIP RELAYS:
Trip
Range: None, Trip, Aux1, Aux2, Trip & Aux1, Trip &
Aux2, Aux1 & Aux2, Trip & Aux1&Aux2
The 369 is capable of controlling the transition of a reduced voltage starter from reduced
to full voltage. That transition may be based on “Current Only”, “Current and Timer”, or “Current or
Timer” (whichever comes first). When the 369 measures the transition of no motor current
to some value of motor current, a 'Start' is assumed to be occurring (typically current will
rise quickly to a value in excess of FLA, e.g. 3 x FLA). At this point, the REDUCED
VOLTAGE START TIMER will be initialized with the programmed value in seconds.
•
5–26
If "Current Only" is selected, when the motor current falls below the programmed
Transition Level, transition will be initiated by activating the assigned output relay for
the time programmed in the START CONTROL RELAY TIMER setpoint. If the timer
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
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expires before that transition is initiated, an Incomplete Sequence Trip will occur
activating the assigned trip relay(s).
•
If "Current or Timer" is selected, when the motor current falls below the programmed
Transition Level, transition will be initiated by activating the assigned output relay for
the time programmed in the START CONTROL RELAY TIMER setpoint. If the timer
expires before that transition is initiated, the transition will be initiated regardless.
•
If “Current and Timer” is selected, when the motor current falls below the programmed
Transition Level and the timer expires, transition will be initiated by activating the
assigned output relay for the time programmed in the START CONTROL RELAY
TIMER setpoint. If the timer expires before current falls below the Transition Level, an
Incomplete Sequence Trip will occur activating the assigned trip relay(s).
FIGURE 5–2: Reduced Voltage Start Contactor Control Circuit
FIGURE 5–3: Reduced Voltage Starting Current Characteristic
Note
NOTE
If this feature is used, the Starter Status Switch input must be either from a common
control contact or a parallel combination of Auxiliary ‘a’ contacts or a series combination
of Auxiliary ‘b’ contacts from the reduced voltage contactor and the full voltage contactor.
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
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Once transition is initiated, the 369 will assume the motor is still running for at least 2
seconds. This will prevent the 369 from recognizing an additional start if motor current
goes to zero during an open transition.
FIGURE 5–4: Reduced Voltage Starter Auxiliary A/B Status Inputs
Autorestart
PATH: S2 SYSTEM SETUP  CONTROL FUNCTIONS  AUTORESTART
AUTORESTART ENABLED: Range: Yes, No
No
AUTORESTART
TOTAL RESTARTS:
1
Range: 0 to 65000 in steps of 1
RESTART
DELAY: 0 s
Range: 0 to 20000 s in steps of 1
PROGRESSIVE
DELAY: 0 s
Range: 0 to 20000 s in steps of 1
HOLD
DELAY: 0 s
Range: 0 to 20000 s in steps of 1
BUS VALID ENABLED1:
No
Range: Yes, No
BUS VALID LEVEL1:
100%
Range: 15 to 100% of Motor Rated Voltage in steps of
1
AUTORESTART ATTEMPT
EVENTS: Off
Range: On, Off
AUTORESTART SUCCESS
EVENTS: Off
Range: On, Off
AUTORESTART ABORTED
EVENTS: Off
Range: On, Off
1.Only shown if option M or B are installed
The 369 can be configured to automatically restart the motor after it tripped on system or
process related disturbances, such as an undervoltage or an overload. This feature is
useful in remote unmanned pumping applications. Before using autorestart, the feature
must be enabled, the required restart time after a trip programmed, and an output contact
configured to initiate the autorestart by closing the circuit breaker or contactor. This output
contact can also be wired with OR logic in the start circuit of the motor.
To prevent the possibility of closing onto a fault upon autorestarting, this feature is not
allowed for all trips. The 369 never attempts an autorestart after Short Circuit or Ground
Fault trips. Furthermore, only one autorestart is attempted after an Overload trip, provided
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that Single Shot Restart is enabled, which allows a single restart attempt. The thermal
capacity is cleared to prevent another overload trip during this start and if the 369 trips
again (second time) on Overload the autorestarting is aborted. Any normal manual starting
will probably be inhibited, (lockout time) allowing the motor to cool (thermal capacity to
decay) before permitting another start.
The trip relay should reset before closing the auto-restart contact to allow the breaker or
contactor to close. This is done by programming S2 SYSTEM SETUP  OUPUT RELAY
SETUP  TRIP RESET MODE to “Remote Only” or “All Resets”. The close contact
selection is enabled by setting the S2 SYSTEM SETUP  CONTROL FUNCTIONS 
SERIAL COMMUNICATION CONTROL  SERIAL COMMUNICATION CONTROL
setpoint to “On” and selecting the desired output contact.
The 369 follows the logic shown in FIGURE 5–5: AUTORESTART LOGIC on page 5–30 to
determine restart conditions. The total autorestart delay comprises the sum of three
delays: Restart Delay, Progressive Delay, and Hold Delay. If any of these are not required,
the autorestart delay can be set to zero.
Total Delay = Restart Delay + (auto-restarts number x Progressive Delay) + Hold Delay
The Restart Delay controls the basic auto-restart time and the timer start when the motor
tripped. The Progressive Delay increases each consecutive auto-restart delay with its set
amount. For example, assume that Restart Delay, Progressive Delay, and Hold Delay are 1,
3, and 0 seconds respectively. Therefore the fifth autorestart waiting time is:
1 sec. + 5th auto-restart × 3 sec. + 0 sec. = 1 sec. + 5 x 3 sec. = 16 sec.
The number of autorestarts is limited by the TOTAL RESTARTS setting to a maximum of
65000. Once this is exceeded, the 369 blocks further autorestarts until it is reset, either
manually or remotely. This limit does not affect normal starting. Please note that 65000
autorestarts implies the motor has been tripped that many times and inspection or
maintenance is probably due. The vendor's suggested number of circuit breaker or
contactor operations before maintenance can affect this setting.
The Hold Delay sequentially staggers auto-restarts for multiple motors on a bus. For
example, if four motors on a bus have settings of 60, 120, 180, and 240 seconds,
respectively, it is advantageous, after a common fault that trips all four motors, to
autorestart at 60 second intervals to minimize voltage sag and overloading
The presence of healthy bus voltage prior to the auto-restart can be verified by enabling
the Bus Valid feature. The BUS VALID LEVEL setting is the voltage level below which
autorestart is not to be attempted. The 369 checks the BUS VALID LEVEL just before the
autorestart to allow the bus voltage to recover. This setpoint is only available if the
Metering Option (M) or Backspin Option (B) is enabled.
Five different types of “Autorestart Aborted” events have been provided to help in
troubleshooting. The following flowchart shows the logic flow of the Autorestart algorithm.
Each type of Autorestart Aborted event and where it occurs within the logic flow is
indicated in this diagram. For example, if an “Autorestart Aborted1” event is recorded in the
event recorder, the logic diagram immediately indicates that the abort cause was the
number of restart attempts being more than the MAXIMUM NUMBER OF RESTARTS
setpoint.
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CHAPTER 5: SETPOINTS
FIGURE 5–5: AUTORESTART LOGIC
5–30
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S2 SYSTEM SETUP
Undervoltage Autorestart
PATH: S2 SYSTEM SETUP  CONTROL FUNCTIONS  UNDERVOLTAGE
AUTORESTART
UNDERVOLTAGE
AUTORESTART1
ENABLE UVR:
On
Range: Off, On (Default: Off)
UVR PICKUP LEVEL:
0.65 x Rated
Range: 0.5 to 1.0 x RATED in steps of 0.01
(Default 0.65 X RATED)
Note: Must be set lower than the UVR Restoration Level
UVR ASSIGN TRIP
RELAYS: None
Range: None, Trip, Aux1, Aux2 or combinations
(Default: None)
UVR TRIP DELAY:
0.0 seconds
Range: 0 to 255 s in steps of 0.1 s (Default: 0)
UVR RESTORATION
LEVEL: 0.90 x Rated
Range: 0.5 to 1.0 x RATED in steps of 0.01
(Default: 0.90 X RATED)
Note: Must be set higher than the UVR Pickup Level
IMMED RESTART POWER
LOSS TIME: 200 ms
Range: 100 to 500 ms or Off in steps of 100 ms
(Default: Off)
DELAY1 RESTART POWER
LOSS TIME: 2.0 s
Range: 0.1 to 10 s or Off in steps of 0.1 s
(Default: Off)
0 = Off
DELAY2 RESTART POWER
LOSS TIME: Off
Range: 1 to 3600 s or Unlimited, Off in steps of 1 s
(Default: Off)
0 = Off, 3601 = Unlimited
DELAY1 RESTART
TIME DELAY: 2.0 s
Range: 0 to 1200 s in steps of 0.2 s
(Default: 2.0 s)
DELAY2 RESTART
TIME DELAY: 10.0 s
Range: 0 to 1200 s in steps of 0.2 s
(Default: 10.0 s)
UVR SETUP TIME:
10.0 seconds
Range: 0 to 1200 s in steps of 0.2 s
(Default: 10.0 s)
1.Only shown if option M or B are installed
This feature is only available if the Metering option (M) or Backspin option (B) is present, and
the setpoint VT CONNECTION TYPE is set to something other than “None”.
ENABLE UNDERVOLTAGE AUTORESTART It is possible to restart the motor after a
momentary power loss (dip) if this feature is enabled. When the magnitude of either of Vab,
Vbc, or Vca drops below the setpoint UVR PICKUP LEVEL , the motor contactor(s) are deenergized. The duration of the power loss is classified as Immediate restart power loss,
delay 1 restart power loss and delay 2 restart power loss based on settable time
thresholds. The motor contactor or breaker can be tripped by the 369 if the setpoint UVR
ASSIGN TRIP RELAYS is set a contact output other than “None”, and the assigned
contact output is wired to the trip circuit.
If the power is restored as indicated by the magnitudes of Vab, Vbc, or Vca all recover
above the setpoint UVR RESTORATION LEVEL within the IMMED. RESTART POWER
LOSS TIME, the motor will be restarted immediately. If the power is restored after the
IMMED. RESTART POWER LOSS TIME but before the DELAY 1 RESTART POWER
LOSS TIME or DELAY 2 RESTART POWER LOSS TIME, the motor will be restarted after
the DELAY 1 RESTART TIME DELAY or DELAY 2 RESTART TIME DELAY. If a delayed
restart is always required, set the DELAY 2 RESTART POWER LOSS TIME to
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UNLIMITED. If another power loss occurs during the DELAY 1 RESTART TIME DELAY
or DELAY 2 RESTART TIME DELAY, all the autorestart timers will be reset and the
autorestart element will be re-initiated based on the latest power loss.
If this feature is used, the Spare Switch must be used as a Starter Status Switch input
reflecting the state of the main contactor or breaker.
The trip relay should reset before closing the autorestart contact to allow the breaker or
contactor to close. This is done by programming S2 SYSTEM SETUP - OUPUT RELAY
SETUP - TRIP RESET MODE to “Remote Only” or “All Resets”. The element uses an output
contact to initiate the autorestart by closing the circuit breaker or contactor. This output
contact can be wired with OR logic in the start circuit of the motor. The close contact
selection is enabled by setting the setpoint S2 SYSTEM SETUP - CONTROL FUNCTIONS
- SERIAL COMMUNICATION CONTROL - SERIAL COMMUNICATION CONTROL to
“On” and selecting the desired output contact for the setpoint ASSIGN START CONTROL
RELAYS.
The difference between the undervoltage autorestart with the SYSTEM SETUP –
CONTROL FUNCTIONS – AUTORESTART element: The undervoltage restart is blocked
by any trip issued by 369 except undervoltage element, and if the undervoltage restart is
enabled, the SYSTEM SETUP – CONTROL FUNCTIONS – AUTORESTART can't be
activated by undervoltage element. It means that if the undervoltage autorestart is
enabled, the undervoltage autorestart element covers no trip condition and under voltage
trip condition, the SYSTEM SETUP – CONTROL FUNCTIONS – AUTORESTART covers
all the trip condition except undervoltage condition.
UVR PICKUP LEVEL sets the motor voltage level below which the undervoltage
autorestart element is triggered. Must be set lower than UVR RESTORATION LEVEL .
UVR ASSIGN TRIP RELAYS assign the trip relay to open the contactor or breaker when a
power loss is detected and the duration is longer than the setpoint UVR TRIP DELAY.
None disables the UVR trip output.
UVR TRIP DELAY sets the time delay to trip the breaker or contactor.
UVR RESTORATION LEVEL sets the motor voltage level above which the undervoltage
autorestart element restarts. Must be set higher than UVR PICKUP LEVEL .
IMMED. RESTART POWER LOSS TIME sets the immediate autorestart power loss
duration, which result in immediate restart. Off disables immediate restart.
DELAY 1 RESTART POWER LOSS TIME Off disables the delay 1 undervoltage
autorestart.
DELAY 2 RESTART POWER LOSS TIME sets to UNLIMITED if a delayed restart is
always required. Off disables the delay 2 undervoltage autorestart.
UVR SETUP TIME sets the amount of time the voltages must be healthy before a another
immediate restart is to be attempted.
Note
NOTE
5–32
The Undervoltage Autorestart feature is intended for use in applications where the 369 is
powered from an uninterruptible power supply, separate from the AC mains powering the
motor. For applications where the 369 is supplied from the same AC mains as the motor,
the timing specification for restarting the motor is ±9 seconds. Care must be taken when
coordinating process start-up.
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Force Output Relays
PATH: S2 SYSTEM SETUP  CONTROL FUNCTIONS  FORCE OUTPUT
RELAYS
FORCE OUTPUT RELAYS
ASSIGN COMMS FORCE
RELAYS: None
Range: None, Trip, Alarm, Aux1, Aux2, or combinations
of these.
TRIP COM FORCE O/P
TYPE: Latched
Range: Latched, Pulsed
TRIP PULSED OP DWELL Range: 0.5 to 5000.0 s in steps of 0.1. Only seen if the
TRIP COM FORCE O/P TYPE is “Pulsed”.
TIME: 0.5 s
ALARM COM FORCE O/P
TYPE: Latched
Range: Latched, Pulsed
ALARM PULSED OP
DWELL
Range: 0.5 to 5000.0 s in steps of 0.1. Only seen if the
ALARM COM FORCE O/P TYPE is
AUX1 COM FORCE O/P
TYPE: Latched
Range: Latched, Pulsed
AUX1 PULSED OP DWELL Range: 0.5 to 5000.0 s in steps of 0.1. Only seen if the
AUX1 COM FORCE O/P TYPE is “Pulsed”.
TIME: 0.5 s
AUX2 COM FORCE O/P
TYPE: Latched
Range: Latched, Pulsed
AUX2 PULSED OP DWELL Range: 0.5 to 5000.0 s in steps of 0.1. Only seen if the
AUX2 COM FORCE O/P TYPE is “Pulsed”.
TIME: 0.5 s
The force output relays function allows the user to energize and de-energize output relays
via remote communications (Modbus or Profibus-DVP1).
To allow the forcing of relay states, the ASSIGN COMMS FORCE RELAY setting must be
programmed. Only relays assigned under this setpoint can be forced through Modbus or
Profibus-DPV1 communications.
Commands can be sent to energize or de-energize any of the four output relays. A bit value
of “1” for the corresponding relay will energize that relay; a bit value of “0” will de-energize
that relay.
The COM FORCE O/P TYPE setting for each relay determines whether it remains latched
in the state sent through the command, or whether it operates for a duration programmed
in the associated PULSED OP DWELL TIME setting. If COM FORCE O/P TYPE is
“Latched”, the relay remains energized until a value of “0” for the relay has been sent
through the command. If COM FORCE O/P TYPE is “Pulsed” and a command is sent to
energize the output relay while a pulse dwell timer from a previous command has not yet
timed to zero, then the timer will reset back to the value of the corresponding PULSED OP
DWELL TIME setpoint and start counting down from this value.
If a relay state is programmed as “Latched” and forced through the force output relays
function, the only way to de-energize it is through another serial command or by cycling
power to the 369.
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
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S3 OVERLOAD PROTECTION
Note
NOTE
5.4
CHAPTER 5: SETPOINTS
For safety reasons, if any of the relays in the S11 TESTING  TEST OUTPUT RELAYS
section are programmed to any value other than “Disabled” (i.e. energized or deenergized), then the force relays functionality through Modbus and Profibus-DPV1 will be
disabled.
S3 Overload Protection
5.4.1
Description
Heat is one of the principle enemies of motor life. When a motor is specified, the purchaser
communicates to the manufacturer what the loading conditions, duty cycle, environment
and pertinent information about the driven load such as starting torque. The manufacturer
then provides a stock motor or builds a motor that should have a reasonable life under
those conditions. The purchaser should request all safe stall, acceleration and running
thermal limits for all motors they receive in order to effectively program the 369.
Motor thermal limits are dictated by the design of the stator and the rotor. Motors have
three modes of operation: locked rotor or stall (rotor is not turning), acceleration (rotor is
coming up to speed), and running (rotor turns at near synchronous speed). Heating occurs
in the motor during each of these conditions in very distinct ways. Typically, during motor
starting, locked rotor, and acceleration conditions, the motor is rotor limited. That is, the
rotor approaches its thermal limit before the stator. Under locked rotor conditions, voltage
is induced in the rotor at line frequency, 50 or 60 Hz. This voltage causes a current to flow
in the rotor, also at line frequency, and the heat generated (I2R) is a function of the effective
rotor resistance. At 50/60 Hz, the rotor cage reactance causes the current to flow at the
outer edges of the rotor bars. The effective resistance of the rotor is therefore at a
maximum during a locked rotor condition as is rotor heating. When the motor is running at
rated speed, the voltage induced in the rotor is at a low frequency (approximately 1 Hz)
and therefore, the effective resistance of the rotor is reduced quite dramatically. During
running overloads, the motor thermal limit is typically dictated by stator parameters. Some
special motors might be all stator or all rotor limited. During acceleration, the dynamic
nature of the motor slip dictates that rotor impedance is also dynamic, and a third
overload thermal limit characteristic is necessary.
Typical thermal limit curves are shown below. The motor starting characteristic is shown
for a high inertia load at 80% voltage. If the motor started quicker, the distinct
characteristics of the thermal limit curves would not be required and the running overload
curve would be joined with locked rotor safe stall times to produce a single overload curve.
5–34
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S3 OVERLOAD PROTECTION
FIGURE 5–6: Typical Time-current and Thermal Limit Curves (ANSI/IEEE C37.96)
5.4.2
Thermal Model
PATH: S3 OVERLOAD PROTECTION  THERMAL MODEL
THERMAL MODEL
OVERLOAD PICKUP
LEVEL: 1.01 x FLA
Range: 1.01 to 1.25 in steps of 0.01
THERMAL CAPACITY
ALARM: Off
Range: Off, Latched, Unlatched
ASSIGN TC ALARM
RELAYS: Alarm
Range: None, Alarm, Aux1, Aux2, or combinations of
them
TC ALARM LEVEL:
75 % Used
Range: 1 to 100% in steps of 1
THERMAL CAPACITY
ALARM EVENTS: No
Range: No, Yes
ASSIGN TC TRIP
RELAYS: Trip
Range: None, Trip, Aux1, Aux2 or combinations of
them (TC trip always on and latched)
ENABLE UNBALANCE
BIAS OF TC: Off
Range: On, Off
UNBALANCE BIAS
K FACTOR: Learned
Range: Learned, 1 to 29 in steps of 1
Only shown if UNBALANCE BIAS is enabled
HOT/COLD SAFE STALL
RATIO: 1.00
Range: 0.01 to 1.00 in steps of 0.01
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ENABLE LEARNED COOL
TIME: No
Range: No, Yes
RUNNING COOL TIME
CONSTANT: 15 min.
Range: 1 to 500 min. in steps of 1
Not shown if LEARNED COOL TIME is enabled
STOPPED COOL TIME
CONSTANT: 30 min.
Range: 1 to 500 min. in steps of 1
Not shown if Learned Cool time is enabled
ENABLE RTD BIASING:
No
Range: No, Yes
RTD BIAS MINIMUM:
40 °C
Range: 1 to RTD BIAS MID POINT
Only shown if RTD BIASING is enabled
RTD BIAS MID POINT:
120 °C
Range: RTD BIAS MINIMUM to MAXIMUM
Only shown if RTD BIASING is enabled
RTD BIAS MAXIMUM:
155 °C
Range: RTD BIAS MID POINT to 200
Only shown if RTD BIASING is enabled
MOTOR LOAD AVERAGING Range: 3 to 60 cycles in steps of 3
INTERVAL: 3 cycles
The primary protective function of the 369 is the thermal model. It consists of five key
elements: the overload curve and pickup level, unbalance biasing, motor cooling time
constants, and temperature biasing based on Hot/Cold motor information and measured
stator RTD temperature.
The 369 integrates both stator and rotor heating into one model. Motor heating is reflected
in the THERMAL CAPACITY USED actual value. If stopped for a long period of time, the motor
will be at ambient temperature and THERMAL CAPACITY USED should be zero. If the motor is in
overload, a trip will occur once the thermal capacity used reaches 100%. Insulation does
not immediately melt when a motor’s thermal limit is exceeded. Rather, the rate of
insulation degradation reaches a point where the motor life will be significantly reduced if
the condition persists. The thermal capacity used alarm may be used as a warning of an
impending overload trip.
The 369 thermal model can be modified to allow compensation for motors used to drive
cyclic loads, such as a reciprocating compressor. The MOTOR LOAD AVERAGING
INTERVAL setting allows the user to dampen the effects of these loads as they relate to
the overall interpretation of the motor thermal characteristics. The load cycle can be
determined using the 369 waveform capture feature or through external equipment. The
size of the load cycle is then entered into the MOTOR LOAD AVERAGING INTERVAL
setpoint. The 369 uses this value to average the motor load, as applied to the thermal
model, over the duration of the load cycle. The result is a damping effect applied to the
thermal model. The setting is entered in steps of 3 to correspond with the run rate of the
369 thermal model. For load cycles not evenly divisible by 3, enter a value equal to the next
multiple of 3 for the MOTOR LOAD AVERAGING INTERVAL .
Motor load averaging may increase trip/alarm times by 16.7 ms for every additional
cycle averaged greater than 3.
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5.4.3
S3 OVERLOAD PROTECTION
Overload Curves
Settings
PATH: S3 OVERLOAD PROTECTION  OVERLOAD CURVE
OVERLOAD CURVE
SELECT CURVE STYLE:
Standard
Range: Standard, Custom
STANDARD OVERLOAD
CURVE NUMBER: 4
Range: 1 to 15 in steps of 1
Only seen if CURVE STYLE is Standard
TIME TO TRIP AT
1.01xFLA: 17415s
Range: 0 to 65534 s in steps of 1
Only seen if CURVE STYLE is Custom
TIME TO TRIP AT
1.05xFLA: 3415 s
Range: 0 to 65534 s in steps of 1
Only seen if CURVE STYLE is Custom
TIME TO TRIP AT
1.10xFLA: 1667 s
Range: 0 to 65534 s in steps of 1
Only seen if CURVE STYLE is Custom
TIME TO TRIP AT
1.20xFLA: 795 s
Range: 0 to 65534 s in steps of 1
Only seen if CURVE STYLE is Custom
TIME TO TRIP AT
1.30xFLA: 507 s
Range: 0 to 65534 s in steps of 1
Only seen if CURVE STYLE is Custom
TIME TO TRIP AT
1.40xFLA: 365 s
Range: 0 to 65534 s in steps of 1
Only seen if CURVE STYLE is Custom
TIME TO TRIP AT
1.50xFLA: 280 s
Range: 0 to 65534 s in steps of 1
Only seen if CURVE STYLE is Custom
TIME TO TRIP AT
1.75xFLA: 170 s
Range: 0 to 65534 s in steps of 1
Only seen if CURVE STYLE is Custom
TIME TO TRIP AT
2.00xFLA: 117 s
Range: 0 to 65534 s in steps of 1
Only seen if CURVE STYLE is Custom
TIME TO TRIP AT
2.25xFLA: 86 s
Range: 0 to 65534 s in steps of 1
Only seen if CURVE STYLE is Custom
TIME TO TRIP AT
2.50xFLA: 67 s
Range: 0 to 65534 s in steps of 1
Only seen if CURVE STYLE is Custom
TIME TO TRIP AT
2.75xFLA: 53 s
Range: 0 to 65534 s in steps of 1
Only seen if CURVE STYLE is Custom
TIME TO TRIP AT
3.00xFLA: 44 s
Range: 0 to 65534 s in steps of 1
Only seen if CURVE STYLE is Custom
TIME TO TRIP AT
3.25xFLA: 37 s
Range: 0 to 65534 s in steps of 1
Only seen if CURVE STYLE is Custom
TIME TO TRIP AT
3.50xFLA: 31 s
Range: 0 to 65534 s in steps of 1
Only seen if CURVE STYLE is Custom
TIME TO TRIP AT
3.75xFLA: 27 s
Range: 0 to 65534 s in steps of 1
Only seen if CURVE STYLE is Custom
TIME TO TRIP AT
4.00xFLA: 23 s
Range: 0 to 65534 s in steps of 1
Only seen if CURVE STYLE is Custom
TIME TO TRIP AT
4.25xFLA: 21 s
Range: 0 to 65534 s in steps of 1
Only seen if CURVE STYLE is Custom
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TIME TO TRIP AT
4.50xFLA: 18 s
Range: 0 to 65534 s in steps of 1
Only seen if CURVE STYLE is Custom
TIME TO TRIP AT
4.75xFLA: 16 s
Range: 0 to 65534 s in steps of 1
Only seen if CURVE STYLE is Custom
TIME TO TRIP AT
5.00xFLA: 15 s
Range: 0 to 65534 s in steps of 1
Only seen if CURVE STYLE is Custom
TIME TO TRIP AT
5.50xFLA: 12 s
Range: 0 to 65534 s in steps of 1
Only seen if CURVE STYLE is Custom
TIME TO TRIP AT
6.00xFLA: 10 s
Range: 0 to 65534 s in steps of 1
Only seen if CURVE STYLE is Custom
TIME TO TRIP AT
6.50xFLA: 9 s
Range: 0 to 65534 s in steps of 1
Only seen if CURVE STYLE is Custom
TIME TO TRIP AT
7.00xFLA: 7 s
Range: 0 to 65534 s in steps of 1
Only seen if CURVE STYLE is Custom
TIME TO TRIP AT
7.50xFLA: 6 s
Range: 0 to 65534 s in steps of 1
Only seen if CURVE STYLE is Custom
TIME TO TRIP AT
8.00xFLA: 6 S
Range: 0 to 65534 s in steps of 1
Only seen if CURVE STYLE is Custom
TIME TO TRIP AT
10.0xFLA: 6 s
Range: 0 to 65534 s in steps of 1
Only seen if CURVE STYLE is Custom
TIME TO TRIP AT
15.0xFLA: 6 s
Range: 0 to 65534 s in steps of 1
Only seen if CURVE STYLE is Custom
TIME TO TRIP AT
20.0xFLA: 6 s
Range: 0 to 65534 s in steps of 1
Only seen if CURVE STYLE is Custom
Standard Overload Curve:
The overload curve accounts for motor heating during stall, acceleration, and running in
both the stator and the rotor. The OVERLOAD PICKUP setpoint dictates where the
running overload curve begins as the motor enters an overload condition. This is useful for
service factor motors as it allows the pickup level to be defined. The curve is effectively cut
off at current values below this pickup.
Motor thermal limits consist of three distinct parts based on the three conditions of
operation, locked rotor or stall, acceleration, and running overload. Each of these curves
may be provided for both a hot motor and a cold motor. A hot motor is defined as one that
has been running for a period of time at full load such that the stator and rotor
temperatures have settled at their rated temperature. A cold motor is defined as a motor
that has been stopped for a period of time such that the stator and rotor temperatures
have settled at ambient temperature. For most motors, the distinct characteristics of the
motor thermal limits are formed into one smooth homogeneous curve. Sometimes only a
safe stall time is provided. This is acceptable if the motor has been designed conservatively
and can easily perform its required duty without infringing on the thermal limit. In this
case, the protection can be conservative and process integrity is not compromised. If a
motor has been designed very close to its thermal limits when operated as required, then
the distinct characteristics of the thermal limits become important.
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369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
CHAPTER 5: SETPOINTS
S3 OVERLOAD PROTECTION
The 369 overload curve can take one of two formats: Standard or Custom Curve.
Regardless of which curve style is selected, the 369 will retain thermal memory in the form
of a register called THERMAL CAPACITY USED. This register is updated every 100 ms
using the following equation:
100 ms
TCused t = TCused t – 100 ms + ------------------------------ × 100%
time_to_trip
(EQ 5.2)
where: time_to_trip = time taken from the overload curve at Ieq as a function of FLA.
The overload protection curve should always be set slightly lower than the thermal limits
provided by the manufacturer. This will ensure that the motor is tripped before the thermal
limit is reached.
If the motor starting times are well within the safe stall times, it is recommended that the
369 Standard Overload Curves be used. The standard overload curves are a series of 15
curves with a common curve shape based on typical motor thermal limit curves (see
FIGURE 5–7: 369 Standard Overload Curves on page 5–39 and FIGURE 5–7: 369 Standard
Overload Curves on page 5–39).
FIGURE 5–7: 369 Standard Overload Curves
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
5–39
S3 OVERLOAD PROTECTION
CHAPTER 5: SETPOINTS
Table 5–1: 369 STANDARD OVERLOAD CURVES
PICKUP
LEVEL
(× FLA)
STANDARD CURVE MULTIPLIERS
×1
×2
×3
×4
×5
×6
×7
×8
×9
1.01
4353.6
1.05
× 10
× 11
× 12
× 13
× 14
× 15
8707.2
13061
17414
21768
26122
30475
34829
39183
43536
47890
52243
56597
60951
65304
853.71
1707.4
2561.1
3414.9
4268.6
5122.3
5976.0
6829.7
7683.4
8537.1
9390.8
10245
11098
11952
12806
1.10
416.68
833.36
1250.0
1666.7
2083.4
2500.1
2916.8
3333.5
3750.1
4166.8
4583.5
5000.2
5416.9
5833.6
6250.2
1.20
198.86
397.72
596.58
795.44
994.30
1193.2
1392.0
1590.9
1789.7
1988.6
2187.5
2386.3
2585.2
2784.1
2982.9
1.30
126.80
253.61
380.41
507.22
634.02
760.82
887.63
1014.4
1141.2
1268.0
1394.8
1521.6
1648.5
1775.3
1902.1
1.40
91.14
182.27
273.41
364.55
455.68
546.82
637.96
729.09
820.23
911.37
1002.5
1093.6
1184.8
1275.9
1367.0
1.50
69.99
139.98
209.97
279.96
349.95
419.94
489.93
559.92
629.91
699.90
769.89
839.88
909.87
979.86
1049.9
1.75
42.41
84.83
127.24
169.66
212.07
254.49
296.90
339.32
381.73
392.15
466.56
508.98
551.39
593.81
636.22
2.00
29.16
58.32
87.47
116.63
145.79
174.95
204.11
233.26
262.42
291.58
320.74
349.90
379.05
408.21
437.37
2.25
21.53
43.06
64.59
86.12
107.65
129.18
150.72
172.25
193.78
215.31
236.84
258.37
279.90
301.43
322.96
2.50
16.66
33.32
49.98
66.64
83.30
99.96
116.62
133.28
149.94
166.60
183.26
199.92
216.58
233.24
249.90
2.75
13.33
26.65
39.98
53.31
66.64
79.96
93.29
106.62
119.95
133.27
146.60
159.93
173.25
186.58
199.91
3.00
10.93
21.86
32.80
43.73
54.66
65.59
76.52
87.46
98.39
109.32
120.25
131.19
142.12
153.05
163.98
3.25
9.15
18.29
27.44
36.58
45.73
54.87
64.02
73.16
82.31
91.46
100.60
109.75
118.89
128.04
137.18
3.50
7.77
15.55
23.32
31.09
38.87
46.64
54.41
62.19
69.96
77.73
85.51
93.28
101.05
108.83
116.60
3.75
6.69
13.39
20.08
26.78
33.47
40.17
46.86
53.56
60.25
66.95
73.64
80.34
87.03
93.73
100.42
4.00
5.83
11.66
17.49
23.32
29.15
34.98
40.81
46.64
52.47
58.30
64.13
69.96
75.79
81.62
87.45
4.25
5.12
10.25
15.37
20.50
25.62
30.75
35.87
41.00
46.12
51.25
56.37
61.50
66.62
71.75
76.87
4.50
4.54
9.08
13.63
18.17
22.71
27.25
31.80
36.34
40.88
45.42
49.97
54.51
59.05
63.59
68.14
4.75
4.06
8.11
12.17
16.22
20.28
24.33
28.39
32.44
36.50
40.55
44.61
48.66
52.72
56.77
60.83
5.00
3.64
7.29
10.93
14.57
18.22
21.86
25.50
29.15
32.79
36.43
40.08
43.72
47.36
51.01
54.65
5.50
2.99
5.98
8.97
11.96
14.95
17.94
20.93
23.91
26.90
29.89
32.88
35.87
38.86
41.85
44.84
6.00
2.50
5.00
7.49
9.99
12.49
14.99
17.49
19.99
22.48
24.98
27.48
29.98
32.48
34.97
37.47
6.50
2.12
4.24
6.36
8.48
10.60
12.72
14.84
16.96
19.08
21.20
23.32
25.44
27.55
29.67
31.79
7.00
1.82
3.64
5.46
7.29
9.11
10.93
12.75
14.57
16.39
18.21
20.04
21.86
23.68
25.50
27.32
7.50
1.58
3.16
4.75
6.33
7.91
9.49
11.08
12.66
14.24
15.82
17.41
18.99
20.57
22.15
23.74
8.00
1.39
2.78
4.16
5.55
6.94
8.33
9.71
11.10
12.49
13.88
15.27
16.65
18.04
19.43
20.82
10.00
1.39
2.78
4.16
5.55
6.94
8.33
9.71
11.10
12.49
13.88
15.27
16.65
18.04
19.43
20.82
15.00
1.39
2.78
4.16
5.55
6.94
8.33
9.71
11.10
12.49
13.88
15.27
16.65
18.04
19.43
20.82
20.00
1.39
2.78
4.16
5.55
6.94
8.33
9.71
11.10
12.49
13.88
15.27
16.65
18.04
19.43
20.82
Above 8.0 x Pickup, the trip time for 8.0 is used. This prevents the overload curve from
acting as an instantaneous element.
Note
NOTE
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369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
CHAPTER 5: SETPOINTS
S3 OVERLOAD PROTECTION
The Standard Overload Curves equation is:
curve_multiplier × 2.2116623
time_to_trip = ----------------------------------------------------------------------------------------------------------------------------------------------2
0.02530337 × ( pickup – 1 ) + 0.05054758 × ( pickup – 1 )
(EQ 5.3)
Custom Overload Curve:
If the motor starting current begins to infringe on the thermal damage curves, it may be
necessary to use a custom curve to ensure successful starting without compromising
motor protection. Furthermore, the characteristics of the starting thermal damage curve
(locked rotor and acceleration) and the running thermal damage curves may not fit
together very smoothly. In this instance, it may be necessary to use a custom curve to
tailor protection to the motor thermal limits so the motor may be started successfully and
used to its full potential without compromising protection. The distinct parts of the thermal
limit curves now become more critical. For these conditions, it is recommended that the
369 custom curve thermal model be used. The custom overload curve of the 369 allows
the user to program their own curve by entering trip times for 30 pre-determined current
levels. The 369 smooths the areas between these points to make the protection curve.
It can be seen below that if the running overload thermal limit curve were smoothed into
one curve with the locked rotor overload curve, the motor could not start at 80% line
voltage. A custom curve is required.
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
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S3 OVERLOAD PROTECTION
CHAPTER 5: SETPOINTS
.
FIGURE 5–8: Custom Curve Example
During the interval of discontinuity, the longer of the two trip times is used to reduce
the chance of nuisance tripping during motor starts.
Note
NOTE
Unbalance Bias
Unbalanced phase currents cause additional rotor heating not accounted for by
electromechanical relays and may not be accounted for in some electronic protective
relays. When the motor is running, the rotor rotates in the direction of the positivesequence current at near synchronous speed. Negative-sequence current, having a phase
rotation opposite to the positive sequence current, and hence, opposite to the rotor
rotation, generates a rotor voltage that produces a substantial rotor current. This induced
current has a frequency approximately twice the line frequency: 100 Hz for a 50 Hz system,
5–42
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
CHAPTER 5: SETPOINTS
S3 OVERLOAD PROTECTION
120 Hz for a 60 Hz system. Skin effect in the rotor bars at this frequency causes a
significant increase in rotor resistance, and therefore a significant increase in rotor
heating. This extra heating is not accounted for in the motor manufacturer thermal limit
curves, since these curves assume positive-sequence currents only from a perfectly
balanced supply and motor design.
The 369 measures the percentage unbalance for the phase currents. The thermal model
may be biased to reflect the additional heating caused by negative-sequence current,
present during an unbalance when the motor is running. This is done by creating an
equivalent motor heating current that takes into account the unbalanced current effect
along with the average phase current. This current is calculated as follows:
2
I avg 1 + k × ( UB% )
I eq = ------------------------------------------------------FLA
(EQ 5.4)
where: Ieq = equivalent unbalance biased heating current
Iavg = average RMS phase current measured
UB% = unbalance percentage measured (100% = 1, 50% = 0.5, etc.)
k = unbalance bias k factor
The figure on the left shows motor derating as a function of voltage unbalance as
recommended by the American organization NEMA (National Electrical Manufacturers
Association). Assuming a typical induction motor with an inrush of 6 × FLA and a negative
sequence impedance of 0.167, voltage unbalances of 1, 2, 3, 4, and 5% equal current
unbalances of 6, 12, 18, 24, and 30% respectively. Based on this assumption, the figure on
the right below illustrates the amount of motor derating for different values of k entered
for the setpoint UNBALANCE BIAS K FACTOR. Note that the curve for k = 8 is almost
identical to the NEMA derating curve.
NEMA
GE MULTILIN
FIGURE 5–9: Medium Motor Derating Factor due to Unbalanced Voltage
If a k value of 0 is entered, the unbalance biasing is defeated and the overload curve will
time out against the measured per unit motor current. The k value may be calculated as:
(EQ 5.5)
230
175
k = --------- (typical estimate); k = --------- (conservative estimate), where I LR is the per unit locked rotor current
2
2
I LR
I LR
The 369 can also learn the unbalance bias k factor. It is recommended that the learned k
factor not be enabled until the motor has had at least five successful starts. The
calculation of the learned k factor is as follows:
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
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S3 OVERLOAD PROTECTION
CHAPTER 5: SETPOINTS
175
k = --------------------------------2
( I LSC ⁄ FLA )
(EQ 5.6)
where I LSC = learned start current, FLA = Full Load Amps setpoint
Motor Cooling
The thermal capacity used quantity is reduced in an exponential manner when the motor
is stopped or current is below the overload pickup setpoint. This reduction simulates motor
cooling. The motor cooling time constants should be entered for both the stopped and
running cases. A stopped motor will normally cool significantly slower than a running
motor. Note that the cool time constant is one fifth the total cool time from 100% thermal
capacity used down to 0% thermal capacity used.
The 369 can learn and estimate the stopped and running cool time constants for a motor.
Calculation of a cool time constant is performed whenever the motor state transitions
from starting to running or from running to stopped. The learned cool times are based on
the cooling rate of the hottest stator RTD, the hot/cold ratio, the ambient temperature (40 if
no ambient RTD), the measured motor load and the programmed service factor or
overload pickup. Learned values should only be enabled for motors that have been started,
stopped and run at least five times.
Note that any learned cool time constants are mainly based on stator RTD information.
Cool time, for starting, is typically a rotor limit. The use of stator RTDs can only render an
approximation. The learned values should only be used if the real values are not available
from the motor manufacturer. Motor cooling is calculated using the following formulas:
TCused = ( TCused_start – TCused_end ) ⋅ ( e
–t ⁄ τ
) + TCused_end
hot
TCused_end = I eq ×  1 – ---------- × 100%

cold
(EQ 5.7)
(EQ 5.8)
where: TCused = thermal capacity used
TCused_start = TC used value caused by overload condition
TCused_end = TC used value set by the hot/cold curve ratio when motor is
running = '0' when motor is stopped.
t = time in minutes
τ = cool time constant (running or stopped)
Ieq = equivalent motor heating current
overload_pickup = overload pickup setpoint as a multiple of FLA
hot/cold = hot/cold curve ratio
Hot/Cold Curve Ratio
The motor manufacturer will sometimes provide thermal limit information for a hot/cold
motor. The 369 thermal model will adapt for these conditions if the Hot/Cold Curve Ratio is
programmed. The value entered for this setpoint dictates the level of thermal capacity
used that the relay will settle at for levels of current that are below the Overload Pickup
Level. When the motor is running at a level that is below the Overload Pickup Level, the
thermal capacity used will rise or fall to a value based on the average phase current and
the entered Hot/Cold Curve Ratio. Thermal capacity used will either rise at a fixed rate of
5% per minute or fall as dictated by the running cool time constant.
hot
TCused_end = I eq ×  1 – ---------- × 100%

cold
5–44
(EQ 5.9)
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
CHAPTER 5: SETPOINTS
S3 OVERLOAD PROTECTION
where: TCused_end = Thermal Capacity Used if Iper_unit remains steady state
Ieq = equivalent motor heating current
hot/cold = HOT/COLD CURVE RATIO setpoint
The hot/cold curve ratio may be determined from the thermal limit curves if provided or
the hot and cold safe stall times. Simply divide the hot safe stall time by the cold safe stall
time. If hot and cold times are not provided, there can be no differentiation and the hot/
cold curve ratio should be entered as 1.00.
FIGURE 5–10: Thermal Model Cooling
RTD Bias
The 369 thermal replica operates as a complete and independent model. The thermal
overload curves however, are based solely on measured current, assuming a normal 40°C
ambient and normal motor cooling. If there is an unusually high ambient temperature, or if
motor cooling is blocked, motor temperature will increase. If the motor stator has
embedded RTDs, the 369 RTD bias feature should be used to correct the thermal model.
The RTD bias feature is a two part curve constructed using three points. If the maximum
stator RTD temperature is below the RTD Bias Minimum setpoint (typically 40°C), no biasing
occurs. If the maximum stator RTD temperature is above the RTD Bias Maximum setpoint
(typically at the stator insulation rating or slightly higher), then the thermal memory is fully
biased and thermal capacity is forced to 100% used. At values in between, the present
thermal capacity used created by the overload curve and other elements of the thermal
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
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S3 OVERLOAD PROTECTION
CHAPTER 5: SETPOINTS
model is compared to the RTD Bias thermal capacity used from the RTD Bias curve. If the
RTD Bias thermal capacity used value is higher, then that value is used from that point
onward. The RTD Bias Center point should be set at the rated running temperature of the
motor. The 369 will automatically determine the thermal capacity used value for the center
point using the HOT/COLD SAFE STALL RATIO setpoint.
hot
TCused@RTD_Bias_Center =  1 – ---------- × 100%

cold
(EQ 5.10)
At temperatures less than the RTD_Bias_Center temperature,
T actual – T min
RTD_Bias_TCused = --------------------------------------- × TCused@RTD_Bias_Center
T center – T min
(EQ 5.11)
At temperatures greater than the RTD_Bias_Center temperature,
T actual – T center
RTD_Bias_TCused = ---------------------------------------------- × ( 100 – TCused@RTD_Bias_Center ) + TCused@RTD_Bias_Center
T max – T center
(EQ 5.12)
where: RTD_Bias_TCused = TC used due to hottest stator RTD
Tactual = Actual present temperature of hottest stator RTD
Tmin = RTD Bias minimum setpoint (ambient temperature)
Tcenter = RTD Bias center setpoint (motor running temperature)
Tmax = RTD Bias max setpoint (winding insulation rating temperature)
TCused@RTD_Bias_Center = TC used defined by HOT/COLD SAFE STALL
RATIO setpoint
In simple terms, the RTD bias feature is real feedback of measured stator temperature. This
feedback acts as correction of the thermal model for unforeseen situations. Since RTDs are
relatively slow to respond, RTD biasing is good for correction and slow motor heating. The
rest of the thermal model is required during starting and heavy overload conditions when
motor heating is relatively fast.
It should be noted that the RTD bias feature alone cannot create a trip. If the RTD bias
feature forces the thermal capacity used to 100%, the motor current must be above the
overload pickup before an overload trip occurs. Presumably, the motor would trip on
programmed stator RTD temperature setpoint at that time.
FIGURE 5–11: RTD Bias Curve
5–46
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
CHAPTER 5: SETPOINTS
5.4.4
S4 CURRENT ELEMENTS
Overload Alarm
PATH: S3 OVERLOAD PROTECTION  OVERLOAD ALARM
OVERLOAD ALARM
OVERLOAD
ALARM: Off
Range: Off, Latched, Unlatched
OVERLOAD ALARM
LEVEL: 1.01 x FLA
Range: 1.01 to 1.50 in steps of 0.01
ASSIGN O/L ALARM
RELAYS: Alarm
Range: None, Alarm, Aux1, Aux2, or combinations
OVERLOAD ALARM
DELAY: 1 s
Range: 0 to 60.0 s in steps of 0.1
OVERLOAD ALARM
EVENTS: Off
Range: On, Off
An overload alarm will occur only when the motor is running and the current rises above
the programmed OVERLOAD ALARM LEVEL. The overload alarm is disabled during a
start. An application of an unlatched overload alarm is to signal a PLC that controls the
load on the motor, whenever the motor is too heavily loaded.
5.5
S4 Current Elements
5.5.1
Description
These elements deal with functions that are based on the current readings of the 369 from
the external phase and/or ground CTs. All models of the 369 include these features.
5.5.2
Short Circuit
PATH: S4 CURRENT ELEMENTS  SHORT CIRCUIT
SHORT CIRCUIT
SHORT CIRCUIT
TRIP: Off
Range: 50/60 Hz Nominal: Off, Latched, Unlatched
Variable: Off, Latched
ASSIGN S/C TRIP
RELAYS: Trip
Range: None, Trip, Aux1, Aux2, or combinations of
them
SHORT CIRCUIT TRIP
LEVEL: 10.0 x CT
Range: 2.0 to 20.0 x CT in steps of 0.1
ADD S/C TRIP
DELAY: 0.00 s
Range: 0 to 255.00 s in steps of 0.01
0 = Instantaneous
SHORT CIRCUIT TRIP
BACKUP: Off
Range: 50/60 Hz Nominal: Off, Latched, Unlatched
Variable: Off, Latched
ASSIGN S/C BACKUP
RELAYS: Aux1
Range: None, Aux1, Aux2, or combinations of them
ADD S/C BACKUP TRIP
DELAY: 0.20 s
Range: 0 to 255.00 s in steps of 0.01
0 = Instantaneous
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
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S4 CURRENT ELEMENTS
CHAPTER 5: SETPOINTS
Note
NOTE
Care must be taken when turning on this feature. If the interrupting device (contactor
or circuit breaker) is not rated to break the fault current, this feature should be
disabled. Alternatively, this feature may be assigned to an auxiliary relay and
connected such that it trips an upstream device that is capable of breaking the fault
current.
Once the magnitude of either phase A, B, or C exceeds the Pickup Level × Phase CT Primary
for a period of time specified by the delay, a trip will occur. Note the delay is in addition to
the 45 ms instantaneous operate time.
There is also a backup trip feature that can be enabled. The backup delay should be
greater than the short circuit delay plus the breaker clearing time. If a short circuit trip
occurs with the backup on, and the phase current to the motor persists for a period of time
that exceeds the backup delay, a second backup trip will occur. It is intended that this
second trip be assigned to Aux1 or Aux2 which would be dedicated as an upstream
breaker trip relay.
Various situations (e.g. charging a long line to the motor or power factor correction
capacitors) may cause transient inrush currents during motor starting that may exceed
the Short Circuit Pickup level for a very short period of time. The Short Circuit time delay is
adjustable in 10 ms increments. The delay can be fine tuned to an application such that it
still responds very fast, but rides through normal operational disturbances. Normally, the
Phase Short Circuit time delay will be set as quick as possible, 0 ms. Time may have to be
increased if nuisance tripping occurs.
When a motor starts, the starting current (typically 6 × FLA for an induction motor) has an
asymmetrical component. This asymmetrical current may cause one phase to see as
much as 1.6 times the normal RMS starting current. If the short circuit level was set at 1.25
times the symmetrical starting current, it is probable that there would be nuisance trips
during motor starting. As a rule of thumb the short circuit protection is typically set to at
least 1.6 times the symmetrical starting current value. This allows the motor to start
without nuisance tripping.
Both the main Short Circuit delay and the backup delay start timing when the current
exceeds the Short Circuit Pickup level.
Note
NOTE
5.5.3
Mechanical Jam
PATH: S4 CURRENT ELEMENTS  MECHANICAL JAM
MECHANICAL JAM
MECHANICAL JAM
ALARM: Off
Range: Off, Latched, Unlatched
ASSIGN ALARM RELAYS: Range: None, Alarm, Aux1, Aux2, or combinations
Alarm
MECHANICAL JAM ALARM Range: 1.01 to 6.00 x FLA in steps of 0.01
LEVEL: 1.50 x FLA
MECHANICAL JAM ALARM Range: 0.5 to 125.0 s in steps of 0.5
DELAY: 1.0 s
MECHANICAL JAM ALARM Range: On, Off
EVENTS: Off
5–48
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
CHAPTER 5: SETPOINTS
S4 CURRENT ELEMENTS
MECHANICAL JAM
TRIP: Off
Range: Off, Latched, Unlatched
ASSIGN TRIP RELAYS:
Trip
Range: None, Trip, Aux1, Aux2, or combinations of
them
MECHANICAL JAM TRIP
LEVEL: 1.50 x FLA
Range: 1.01 to 6.00 x FLA in steps of 0.01
MECHANICAL JAM TRIP
DELAY: 1.0 s
Range: 0.5 to 125.0 s in steps of 0.5
After a motor start, once the magnitude of any one of either phase A, B, or C exceeds the
Trip/Alarm Pickup Level × FLA for a period of time specified by the Delay, a Trip/Alarm will
occur. This feature may be used to indicate a stall condition when running. Not only does it
protect the motor by taking it off-line quicker than the thermal model (overload curve), it
may also prevent or limit damage to the driven equipment that may occur if motor starting
torque persists on jammed or broken equipment.
The level for the Mechanical Jam Trip should be set higher than motor loading during
normal operations, but lower than the motor stall level. Normally the delay would be set to
the minimum time delay, or set such that no nuisance trips occur due to momentary load
fluctuations.
5.5.4
Undercurrent
PATH: S4 CURRENT ELEMENTS  UNDERCURRENT
UNDERCURRENT
BLOCK UNDERCURRENT
FROM START: 0 s
Range: 0 to 15000 s in steps of 1
UNDERCURRENT
ALARM: Off
Range: Off, Latched, Unlatched
ASSIGN U/C ALARM
RELAYS: Alarm
Range: None, Alarm, Aux1, Aux2, or combinations of
them
UNDERCURRENT ALARM
LEVEL: 0.70 x FLA
Range: 0.10 to 0.99 x FLA in steps of 0.01
UNDERCURRENT ALARM
DELAY: 1 s
Range: 1 to 255 s in steps of 1
UNDERCURRENT ALARM
EVENTS: Off
Range: On, Off
UNDERCURRENT
TRIP: Off
Range: Off, Latched, Unlatched
ASSIGN U/C TRIP
RELAYS: Trip
Range: None, Trip, Aux1, Aux2, or combinations of
them
UNDERCURRENT TRIP
LEVEL: 0.70 x FLA
Range: 0.10 to 0.99 x FLA in steps of 0.01
UNDERCURRENT TRIP
DELAY: 1 s
Range: 1 to 255 s in steps of 1
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If enabled, once the magnitude of either phase A, B or C falls below the pickup level × FLA
for a period of time specified by the Delay, a trip or alarm will occur. The undercurrent
element is an indication of loss of load to the motor. Thus, the pickup level should be set
lower than motor loading levels during normal operations. The undercurrent element is
active when the motor is starting or running.
The undercurrent element can be blocked upon the initiation of a motor start for a period
of time specified by the U/C Block From Start setpoint (e.g. this block may be used to allow
pumps to build up head before the undercurrent element trips). A value of 0 means
undercurrent protection is immediately enabled upon motor starting (no block). If a value
other than 0 is entered, the feature will be disabled from the time a start is detected until
the time entered expires.
Application Example:
If a pump is cooled by the liquid it pumps, loss of load may cause the pump to overheat.
Undercurrent protection should thus be enabled. If the motor loading should never fall
below 0.75 × FLA, even for short durations, the Undercurrent Trip pickup could be set to
0.70 and the Undercurrent Alarm to 0.75. If the pump is always started loaded, the block
from start feature should be disabled (programmed as 0).
Time delay is typically set as quick as possible, 1 second.
5.5.5
Current Unbalance
PATH: S4 CURRENT ELEMENTS  CURRENT UNBALANCE
CURRENT UNBALANCE
5–50
BLOCK UNBALANCE FROM Range: 0 to 5000 s in steps of 1
START: 0 s
CURRENT UNBALANCE
ALARM: Off
Range: Off, Latched, Unlatched
ASSIGN U/B ALARM
RELAYS: Alarm
Range: None, Alarm, Aux1, Aux2, or combinations of
them
UNBALANCE ALARM
LEVEL: 15 %
Range: 4 to 30% in steps of 1
UNBALANCE ALARM
DELAY: 1 s
Range: 1 to 255 s in steps of 1
UNBALANCE ALARM
EVENTS: Off
Range: On, Off
CURRENT UNBALANCE
TRIP: Off
Range: Off, Latched, Unlatched
ASSIGN U/B TRIP
RELAYS: Trip
Range: None, Trip, Aux1, Aux2, or combinations of
them
UNBALANCE TRIP
LEVEL: 20 %
Range: 4 to 30% in steps of 1
UNBALANCE TRIP
DELAY: 1 s
Range: 1 to 255 s in steps of 1
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
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Unbalanced three phase supply voltages are a major cause of induction motor thermal
damage. Causes of unbalance can include: increased resistance in one phase due to a
pitted or faulty contactor, loose connections, unequal tap settings in a transformer, nonuniformly distributed three phase loads, or varying single phase loads within a plant. The
most serious case of unbalance is single phasing – that is, the complete loss of one phase.
This can be caused by a utility supply problem or a blown fuse in one phase and can
seriously damage a three phase motor. A single phase trip will occur in 2 seconds if the
Unbalance trip is on and the level exceeds 30%. A single phase trip will also activate in 2
seconds if the Motor Load is above 30% and at least one of the phase currents is zero.
Single phasing protection is disabled if the Unbalance Trip is turned Off.
During balanced conditions in the stator, current in each motor phase is equal, and the
rotor current is just sufficient to provide the turning torque. When the stator currents are
unbalanced, a much higher current is induced into the rotor due to its lower impedance to
the negative sequence current component present. This current is at twice the power
supply frequency and produces a torque in the opposite direction to the desired motor
output. Usually the increase in stator current is small and timed overcurrent protection
takes a long time to trip. However, the much higher induced rotor current can cause
extensive rotor damage in a short period of time. Motors can tolerate different levels of
current unbalance depending on the rotor design and heat dissipation characteristics.
To prevent nuisance trips/alarms on lightly loaded motors when a much larger unbalance
level will not damage the rotor, the unbalance protection will automatically be defeated if
the average motor current is less than 30% of the full load current (IFLA) setting. Unbalance
is calculated as follows:
I max – I avg
If I avg ≥ I FLA , Unbalance = ----------------------------- × 100
I avg
I max – I avg
If I avg < I FLA , Unbalance = ----------------------------- × 100
I FLA
(EQ 5.13)
where: Iavg = average phase current,
Imax = current in a phase with maximum deviation from Iavg,
IFLA = motor full load amps setting
Unbalance protection is recommended at all times. When setting the unbalance pickup
level, it should be noted that a 1% voltage unbalance typically translates into a 6% current
unbalance. Therefore, in order to prevent nuisance trips or alarms, the pickup level should
not be set too low. Also, since short term unbalances are common, a reasonable delay
should be set to avoid nuisance trips or alarms. It is recommended that the unbalance
thermal bias feature be used to bias the Thermal Model to account for rotor heating that
may be caused by cyclic short term unbalances.
5.5.6
Ground Fault
PATH: S4 CURRENT ELEMENTS  GROUND FAULT
GROUND FAULT
GROUND FAULT
ALARM: Off
Range: 50/60 Hz Nominal: Off, Latched, Unlatched
Variable: Off, Latched
ASSIGN G/F ALARM
RELAYS: Alarm
Range: None, Alarm, Aux1, Aux2, or combinations of
them
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GROUND FAULT ALARM
LEVEL: 0.10 x CT
Range: 0.10 to 1.00 x CT in steps of 0.01
Only shown if G/F CT is 1A or 5A
GROUND FAULT ALARM
LEVEL: 0.25 A
Range: 0.25 to 25.00 A in steps of 0.01
Only shown if G/F CT is 50:0.025
GROUND FAULT ALARM
DELAY: 0.00 s
Range: 0.00 to 255.00 s in steps of 0.01s
255.00 = Off
GROUND FAULT ALARM
EXT. DELAY: 255.0 s
Range: 254.9 = Off, 255.0 to 1800.0 s in steps of 0.1 s
GROUND FAULT ALARM
EVENTS: Off
Range: On, Off
GROUND FAULT
TRIP: Off
Range: 50/60 Hz Nominal: Off, Latched, Unlatched
Variable: Off, Latched
ASSIGN GF TRIP
RELAYS: Trip
Range: None, Trip, Aux1, Aux2, or combinations of
them
GROUND FAULT TRIP
LEVEL: 0.20 x CT
Range: 0.10 to 1.00 x CT in steps of 0.01
Only shown if Ground Fault CT is 1A or 5A
GROUND FAULT TRIP
LEVEL: 0.25 A
Range: 0.25 to 25.00 A in steps of 0.01
Only shown if Ground Fault CT is 50:0.025
GROUND FAULT TRIP
DELAY: 0.00 s
Range: 0 to 255.00 s in steps of 0.01 s
255.00 = Off
GROUND FAULT TRIP
EXT. DELAY: 255.0 s
Range: 254.9 = Off, 255.0 to 1800.0 s in steps of 0.1 s
GROUND FAULT TRIP
BACKUP: Off
Range: 50/60 Hz Nominal: Off, Latched, Unlatched
Variable: Off, Latched
ASSIGN G/F BACKUP
RELAYS: Aux2
Range: None, Aux1, Aux2, or combinations of them
G/F TRIP BACKUP
DELAY: 255.0 s
Range: 254.9 = Off, 255.0 to 1800.0 s in steps of 0.1 s
G/F TRIP BACKUP EXT. Range: 254.9 = Off, 255.0 to 1800.0 s in steps of 0.1 s
DELAY: 255.0 s
Once the magnitude of ground current exceeds the Pickup Level for a period of time
specified by the Delay, a trip and/or alarm will occur. There is also a backup trip feature
that can be enabled. If the backup is On, and a Ground Fault trip has initiated, and the
ground current persists for a period of time that exceeds the backup delay, a second
‘backup’ trip will occur. It is intended that this second trip be assigned to Aux1 or Aux2
which would be dedicated as an upstream breaker trip relay. The Ground Fault Trip Backup
delay must be set to a time longer than the breaker clearing time.
Note
NOTE
5–52
Care must be taken when turning On this feature. If the interrupting device (contactor
or circuit breaker) is not rated to break ground fault current (low resistance or solidly
grounded systems), the feature should be disabled. Alternately, the feature may be
assigned to an auxiliary relay and connected such that it trips an upstream device that
is capable of breaking the fault current.
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S5 MOTOR START/INHIBITS
Various situations (e.g. contactor bounce) may cause transient ground currents during
motor starting that may exceed the Ground Fault Pickup levels for a very short period of
time. The delay can be fine tuned to an application such that it still responds very fast, but
rides through normal operational disturbances. Normally, the Ground Fault time delays will
be set as quick as possible, 0 ms. Time may have to be increased if nuisance tripping
occurs.
Special care must be taken when the ground input is wired to the phase CTs in a residual
connection. When a motor starts, the starting current (typically 6 × FLA for an induction
motor) has an asymmetrical component. This asymmetrical current may cause one phase
to see as much as 1.6 times the normal RMS starting current. This momentary DC
component will cause each of the phase CTs to react differently and the net current into
the ground input of the 369 will not be negligible. A 20 ms block of the ground fault
elements when the motor starts enables the 369 to ride through this momentary ground
current signal.
Both the main Ground Fault delay and the backup delay start timing when the Ground
Fault current exceeds the pickup level.
Note
NOTE
5.5.7
Ground Trip Time Extension
There are two ranges of time delay setpoints for the Ground Fault element. The first
(shorter) range of setpoints (0 to 254.99 seconds) is as follows:
1.
Ground fault alarm delay
2.
Ground fault trip delay
3.
G/F trip backup delay.
The second (longer) range of setpoints (255.0 to 1800.0 seconds) is as follows:
1.
Ground fault alarm ext. delay
2.
Ground fault trip ext. delay
3.
G/F trip backup ext. delay.
The first (shorter) range always takes precedence over the second (longer) range. Setting
the first range to 'OFF' (255.00) allows the user to enter a delay in the second range. If,
however, the first range is not set to 'OFF,' after the user stores a value for the second
range, this value (in the second range) will automatically revert back to 'OFF' (254.9).
5.6
S5 Motor Start/Inhibits
5.6.1
Description
These setpoints deal with those functions that prevent the motor from restarting once
stopped until a set condition clears and/or a set time expires. None of these functions will
trip a motor that is already running.
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S5 MOTOR START/INHIBITS
5.6.2
CHAPTER 5: SETPOINTS
Acceleration Trip
PATH: S5 MOTOR START/INHIBITS  ACCELERATION TRIP
ACCELERATION TRIP
ACCELERATION
TRIP: Off
Range: Off, Latched, Unlatched
ASSIGN TRIP RELAYS:
Trip
Range: None, Trip, Aux1, Aux2, or combinations of
them
ACCELERATION TIME
FROM START: 10.0 s
Range: 1.0 to 250.0 s in steps of 0.1
The 369 Thermal Model is designed to protect the motor under both starting and overload
conditions. The Acceleration Timer trip feature may be used in addition to that protection.
If for example, the motor should always start in 2 seconds, but the safe stall time is 8
seconds, there is no point letting the motor remain in a stall condition for 7 or 8 seconds
when the thermal model would take it off line. Furthermore, the starting torque applied to
the driven equipment for that period of time could cause severe damage.
If enabled, the Acceleration Timer trip element will function as follows: A motor start is
assumed to be occurring when the 369 measures the transition of no motor current to
some value of motor current. Typically current will rise quickly to a value in excess of FLA
(e.g. 6 x FLA). At this point, the Acceleration Timer will be initialized with the entered value in
seconds. If the current does not fall below the overload curve pickup level before the timer
expires, an acceleration trip will occur. If the acceleration time of the motor is variable, this
feature should be set just beyond the longest acceleration time.
Note
NOTE
5–54
Some motor soft starters may allow current to ramp up slowly while others may limit
current to less than Full Load Amps throughout the start. In these cases, as a generic
relay that must protect all motors, the 369 cannot differentiate between a motor that
has a slow ramp up time and one that has completed a start and gone into an overload
condition. Therefore, if the motor current does not rise to greater than full load within 1
second on start, the acceleration timer feature is ignored. In any case, the motor is still
protected by the overload curve.
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
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5.6.3
S5 MOTOR START/INHIBITS
Start Inhibits
PATH: S5 MOTOR START/INHIBITS  START INHIBITS
START INHIBITS
ENABLE SINGLE SHOT
RESTART: No
Range: No, Yes
ENABLE
START INHIBIT: No
Range: No, Yes
MAX STARTS/HOUR
PERMISSIBLE: Off
Range: 1 to 5 in steps of 1, Off (0)
TIME BETWEEN STARTS
PERMISSIBLE: Off
Range: 1 to 500 min. in steps of 1, Off (0)
RESTART BLOCK:
Off
Range: 1 to 50000 s in steps of 1, Off (0)
ASSIGN BLOCK RELAY:
Trip & Aux2
Range: None, Trip, Aux1, Aux2, or combinations
The start inhibit setpoints are individually described below.
•
ENABLE SINGLE SHOT RESTART: Enabling this feature will allow the motor to be
restarted immediately after an overload trip has occurred. To accomplish this, a reset
will cause the 369 to decrease the accumulated thermal capacity to zero. However, if
a second overload trip occurs within one hour of the first, another immediate restart
will not be permitted. The displayed lockout time must then be allowed to expire
before the motor can be started.
•
ENABLE START INHIBIT: The Start Inhibit feature is intended to help prevent tripping of
the motor during a start if there is insufficient thermal capacity for a start. The
average value of thermal capacity used from the last five successful starts is
multiplied by 1.25 and stored as thermal capacity used on start. This 25% margin is
used to ensure that a motor start will be successful. If the number is greater than
100%, 100% is stored as thermal capacity used on start. A successful motor start is
one in which phase current rises from 0 to greater than overload pickup and then,
after acceleration, falls below the overload curve pickup level. If the Start Inhibit
feature is enabled, each time the motor is stopped, the amount of thermal capacity
available (100% – Thermal Capacity Used) is compared to the THERMAL CAPACITY
USED ON START . If the thermal capacity available does not exceed the THERMAL
CAPACITY USED ON START , or is not equal to 100%, the Start Inhibit will become
active until there is sufficient thermal capacity. When an inhibit occurs, the lockout
time will be equal to the time required for the motor to cool to an acceptable
temperature for a start. This time will be a function of the COOL TIME CONSTANT
STOPPED programmed. If this feature is turned Off, thermal capacity used must
reduce to 15% before an overload lockout resets. This feature should be turned off if
the load varies for different starts.
•
MAX STARTS/HOUR PERMISSIBLE: A motor start is assumed to be occurring when the
369 measures the transition of no motor current to some value of motor current. At
this point, one of the Starts/Hour timers is loaded with 60 minutes. Even unsuccessful
start attempts will be logged as starts for this feature. Once the motor is stopped, the
number of starts within the past hour is compared to the number of starts allowable. If
the two are the same, an inhibit will occur. If an inhibit occurs, the lockout time will be
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S5 MOTOR START/INHIBITS
CHAPTER 5: SETPOINTS
equal to one hour less the longest time elapsed since a start within the past hour. An
Emergency restart will clear the oldest start time remaining.
•
TIME BETWEEN STARTS PERMISSIBLE: A motor start is assumed to be occurring when
the 369 measures the transition of no motor current to some value of motor current.
At this point, the Time Between Starts timer is loaded with the entered time. Even
unsuccessful start attempts will be logged as starts for this feature. Once the motor is
stopped, if the time elapsed since the most recent start is less than the TIME
BETWEEN STARTS PERMISSIBLE setpoint, an inhibit will occur. If an inhibit occurs,
the lockout time will be equal to the time elapsed since the most recent start
subtracted from the TIME BETWEEN STARTS PERMISSIBLE setpoint.
•
RESTART BLOCK: Restart Block may be used to ensure that a certain amount of time
passes between stopping a motor and restarting that motor. This timer feature may
be very useful for some process applications or motor considerations. If a motor is on
a down-hole pump, after the motor stops, the liquid may fall back down the pipe and
spin the rotor backwards. It would be very undesirable to start the motor at this time.
In another scenario, a motor may be driving a very high inertia load. Once the supply
to the motor is disconnected, the rotor may continue to turn for a long period of time
as it decelerates. The motor has now become a generator and applying supply
voltage out of phase may result in catastrophic failure.
•
ASSIGN BLOCK RELAY: The relay(s) assigned here will be used for all blocking/inhibit
elements in this section. The assigned relay will activate only when the motor is
stopped. When a block/inhibit condition times out or is cleared, the assigned relay will
automatically reset itself.
Notes For All Inhibits And Blocks:
5.6.4
1.
In the event of control power loss, all lockout times will be saved. Elapsed time
will be recorded and decremented from the inhibit times whether control
power is applied or not. Upon control power being re-established to the 369,
all remaining inhibits (have not time out) will be re-activated.
2.
If the motor is started while an inhibit is active an event titled ‘Start while
Blocked’ will be recorded.
Backspin Detection
PATH: S5 MOTOR START/INHIBITS  BACKSPIN DETECTION
BACKSPIN DETECTION
ENABLE BACKSPIN
START INHIBIT: No
Range: No, Yes
Only shown if B option installed
MINIMUM PERMISSIBLE
FREQUENCY: 0.00 Hz
Range: 0 to 9.99 Hz in steps of 0.01
Shown only if backspin start inhibit is enabled
PREDICTION ALGORITHM Range: Disabled, Enabled
Shown only if backspin start inhibit is enabled
Enabled
5–56
ASSIGN BSD RELAY:
Aux2
Range: None, Trip, Aux1, Aux2, or combinations
Seen only if backspin start inhibit is enabled
NUM OF MOTOR POLES:
2
Range: 2 to 16 in steps of 2
Shown only if backspin start inhibit is enabled
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S6 RTD TEMPERATURE
Immediately after the motor is stopped, backspin detection commences and a backspin
start inhibit is activated to prevent the motor from being restarted. The backspin frequency
is sensed through the BSD voltage input. If the measured frequency is below the
programmed MINIMUM PERMISSIBLE FREQUENCY, the backspin start inhibit will be
removed. The time for the motor to reach the MINIMUM PERMISSIBLE FREQUENCY is
calculated throughout the backspin state. If the BSD frequency signal is lost prior to
reaching the Minimum Permissible Frequency, the inhibit remains active until the
prediction time has expired. The calculated Prediction Time and the Backspin State can be
viewed in Section 6.3.4 Backspin Metering on page 6–9.
Application:
Backspin protection is typically used on down hole pump motors which can be located
several kilometers underground. Check valves are often used to prevent flow reversal
when the pump stops. Very often however, the flow reverses due to faulty or non existent
check valves, causing the pump impeller to rotate the motor in the reverse direction.
Starting the motor during this period of reverse rotation (back-spinning) may result in
motor damage. Backspin detection ensures that the motor can only be started when the
motor has slowed to within acceptable limits. Without backspin detection a long time
delay had to be used as a start permissive to ensure the motor had slowed to a safe speed.
These setpoints are only visible when option B has been installed.
Note
NOTE
5.7
S6 RTD Temperature
5.7.1
Description
These setpoints deal with the RTD overtemperature elements of the 369. The Local RTD
Protection setpoints will only be seen if the 369 has option R installed. The Remote RTD
Protection setpoints will only be seen if the 369 has the RRTD accessory enabled. Both can
be enabled and used at the same time and have the same functionality.
5.7.2
Local RTD Protection
PATH: S6 RTD TEMPERATURE  LOCAL RTD PROTECTION  LOCAL RTD 1(12)
LOCAL RTD 1
RTD 1 APPLICATION:
None
Range: None, Stator, Bearing, Ambient, Other
RTD 1 TYPE:
100 Ohm Platinum
Range 10 Ohm Copper, 100 Ohm Nickel, 120 Ohm
Nickel, 100 Ohm Platinum.
RTD 1 NAME:
RTD 1
Range: 8 alphanumeric characters
RTD 1 ALARM:
Off
Range: Off, Latched, Unlatched
RTD 1 ALARM RELAYS:
Alarm
Range: None, Alarm, Aux1, Aux2, or combinations
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CHAPTER 5: SETPOINTS
RTD 1 ALARM
LEVEL: 130°C
Range: 1 to 200°C or 34 to 392°F in steps of 1
RTD 1 HI ALARM:
Off
Range: Off, Latched, Unlatched
RTD 1 HI ALARM
RELAYS: Aux1
Range: None, Alarm, Aux1, Aux2, or combinations
RTD 1 HI ALARM
LEVEL: 130°C
Range: 1 to 200°C or 34 to 392°F in steps of 1
RECORD RTD 1 ALARMS
AS EVENTS: No
Range: No, Yes
RTD 1 TRIP:
Off
Range: Off, Latched, Unlatched
RTD 1 TRIP RELAYS:
Trip
Range: None, Trip, Aux1, Aux2, or combinations
RTD 1 TRIP
LEVEL: 130°C
Range: 1 to 200°C or 34 to 392°F in steps of 1
ENABLE RTD 1 TRIP
VOTING: Off
Range: Off, RTD 1 to RTD12, All Stator
The above setpoints will only be shown if the RTD 1(12) APPLICATION setpoint is other
than “None”
Note
NOTE
RTD NAME can not be edited using front panel. EnerVista 369 Setup software should be
used to set the RTD NAME.
Note
NOTE
5–58
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CHAPTER 5: SETPOINTS
5.7.3
S6 RTD TEMPERATURE
Remote RTD Protection
Main Menu
PATH: S6 RTD TEMPERATURE  REMOTE RTD PROTECTN  REMOTE RTD
MODULE 1(4)
REMOTE RTD MODULE 1
RRTD 1 RTD1
See page 5–59
RRTD 1 RTD2
See page 5–59
RRTD 1 RTD12
See page 5–59
RRTD 1 OPEN RTD
ALARM: Off
Range: Off, On
ASSIGN ALARM RELAYS: Range: None, Alarm, Aux1, Aux2, or combinations
Alarm
RRTD 1 OPEN RTD
EVENTS: No
Range: No, Yes
RRTD 1 SHORT/LOW RTD Range: Off, On
ALARM: Off
ASSIGN ALARM RELAYS: Range: None, Alarm, Aux1, Aux2, or combinations
Alarm
RRTD 1 SHORT/LOW RTD Range: No, Yes
EVENTS: No
These setpoints are applicable for units with a GE Multilin Remote RTD module.
Remote RTD 1(12)
PATH: S6 RTD TEMPERATURE  REMOTE RTD PROTECTN  REMOTE RTD
MODULE 1(4)  RRTD 1 RTD 1(12)
RRTD 1 RTD #
1
RTD 1 APPLICATION:
None
Range: None, Stator, Bearing, Ambient, Other
RRTD 1 RTD1 TYPE:
100 Ohm Platinum
Range: 10 Ohm Copper, 100 Ohm Nickel, 120 Ohm
Nickel, 100 Ohm Platinum
RRTD 1 RTD1 NAME:
RRTD1
Range: 8 character alphanumeric. Seen only if RRTD 1
APPLICATION is other than “None”
RRTD 1 RTD1 ALARM:
Off
Range: Off, Latched, Unlatched. Seen only if RRTD 1
APPLICATION is other than “None”
RRTD 1 RTD1 ALARM
RELAYS: Alarm
Range: None, Alarm, Aux1, Aux2, or combinations.
Seen only if RRTD 1 APPLICATION is not “None”
RRTD 1 RTD1 ALARM
LEVEL: 130 °C
Range: 1 to 200°C or 34 to 392°F in steps of 1. Seen
only if RRTD 1 APPLICATION is other than
RRTD 1 RTD1 HI
ALARM:
Range: Off, Latched, Unlatched. Seen only if RRTD 1
APPLICATION is other than “None”.
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S6 RTD TEMPERATURE
CHAPTER 5: SETPOINTS
RRTD1 RTD1 HI ALARM
RELAY: Aux1
Range: None, Alarm, Aux1, Aux2, or combinations.
Seen only if RRTD 1 APPLICATION is not “None”.
RRTD 1 RTD1 HI ALARM Range: 1 to 200°C or 34 to 392°F in steps of 1. Seen
only if RRTD 1 APPLICATION is other than
LEVEL: 130 °C
RRTD 1 RTD1 ALARMS
AS EVENTS: No
Range: No, Yes. Seen only if RRTD 1 APPLICATION is
other than “None”.
RRTD 1 RTD1 TRIP:
Off
Range: Off, Latched, Unlatched. Seen only if RRTD 1
APPLICATION is other than “None”.
RRTD 1 RTD1 TRIP
RELAYS: Trip
Range: None, Trip, Aux1, Aux2, or combinations. Seen
only if RRTD 1 APPLICATION is not “None”.
RRTD 1 RTD1 TRIP
LEVEL: 130 °C
Range: 1 to 200°C or 34 to 392°F in steps of 1. Seen
only if RRTD 1 APPLICATION is other than
RRTD 1 RTD1 TRIP
VOTING: Off
Range: Off, RRTD 1 to 12, All Stator. Seen only if RRTD 1
APPLICATION is other than “None”
•
RTD 1(12) APPLICATION: Each individual RTD may be assigned an application. A
setting of “None” turns an individual RTD off. Only RTDs with the application set to
“Stator” are used for RTD biasing of the thermal model. If an RTD application is set to
“Ambient”, then its is used in calculating the learned cool time of the motor.
•
RTD 1(12) TYPE: Each RTD is individually assigned the RTD type it is connected to.
Multiple types may be used with a single 369.
•
RTD 1(12) NAME: Each RTD may have 8 character name assigned to it. This name is
used in alarm and trip messages.
RTD NAME can not be edited using front panel. EnerVista 369 Setup software should
be used to set the RTD NAME.
•
RTD 1(12) ALARM, RTD 1(12) HI ALARM, and RTD 1(12) TRIP: Each RTD can be
programmed for separate Alarm, Hi Alarm and Trip levels and relays. Trips are
automatically stored as events. Alarms and Hi Alarms are stored as events only if the
Record Alarms as Events setpoint for that RTD is set to Yes.
•
RTD 1(12) TRIP VOTING: This feature provides added RTD trip reliability in situations
where malfunction and nuisance tripping is common. If enabled, the RTD trips only if
the RTD (or RTDs) to be voted with are also above their trip level. For example, if RTD 1
is set to vote with All Stator RTDs, the 369 will only trip if RTD 1 is above its trip level and
any one of the other stator RTDs is also above its own trip level. RTD voting is typically
only used on Stator RTDs and typically done between adjacent RTDs to detect hot
spots.
Stator RTDs can detect heating due to non overload (current) conditions such as blocked or
inadequate cooling and ventilation or high ambient temperature as well as heating due to
overload conditions. Bearing or other RTDs can detect overheating of bearings or auxiliary
equipment.
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S6 RTD TEMPERATURE
Table 5–2: Rtd Resistance to Temperature
5.7.4
TEMPERATURE
°C
°F
RTD RESISTANCE (IN OHMS)
100 Ohm Pt
120 Ohm Ni
DIN 43760
100 Ohm Ni
10 Ohm Cu
–40
–30
–20
–10
0
10
20
30
40
50
60
70
80
90
100
110
120
130
140
150
160
170
180
190
200
84.27
88.22
92.16
96.09
100.00
103.90
107.79
111.67
115.54
119.39
123.24
127.07
130.89
134.70
138.50
142.29
146.06
149.82
153.58
157.32
161.04
164.76
168.47
172.46
175.84
79.13
84.15
89.23
94.58
100.0
105.6
111.2
117.1
123.0
129.1
135.3
141.7
148.3
154.9
161.8
168.8
176.0
183.3
190.9
198.7
206.6
214.8
223.2
231.6
240.0
7.49
7.88
8.26
8.65
9.04
9.42
9.81
10.19
10.58
10.97
11.35
11.74
12.12
12.51
12.90
13.28
13.67
14.06
14.44
14.83
15.22
15.61
16.00
16.39
16.78
–40
–22
–4
14
32
50
68
86
104
122
140
158
176
194
212
230
248
266
284
302
320
338
356
374
392
92.76
99.41
106.15
113.00
120.00
127.17
134.52
142.06
149.79
157.74
165.90
174.25
182.84
191.64
200.64
209.85
219.29
228.96
238.85
248.95
259.30
269.91
280.77
291.96
303.46
Open RTD Alarm
PATH: S6 RTD TEMPERATURE  OPEN LOCAL RTD ALARM
OPEN LOCAL RTD ALARM
OPEN LOCAL RTD
ALARM: Off
Range: Off, Latched, Unlatched
ASSIGN ALARM RELAYS: Range: None, Alarm, Aux1, Aux2, or combinations
Alarm
OPEN RTD ALARM
EVENTS: No
Range: No, Yes
The 369 has an Open RTD Sensor Alarm. This alarm will look at all RTDs that have been
assigned an application other than “None” and determine if an RTD connection has been
broken. When a broken sensor is detected, the assigned output relay will operate and a
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
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S6 RTD TEMPERATURE
CHAPTER 5: SETPOINTS
message will appear on the display identifying the RTD that is broken. It is recommended
that if this feature is used, the alarm be programmed as latched so that intermittent RTDs
are detected and corrective action may be taken.
5.7.5
Short/Low Temp RTD Alarm
PATH: S6 RTD TEMPERATURE  SHORT/LOW RTD ALARM
SHORT/LOW RTD ALARM
SHORT/LOW TEMP RTD
ALARM: Off
Range: Off, Latched, Unlatched
ASSIGN ALARM RELAYS: Range: None, Alarm, Aux1, Aux2, or combinations
Alarm
SHORT/LOW TEMP ALARM Range: No, Yes
EVENTS: No
The 369 has an RTD Short/Low Temperature alarm. This function tracks all RTDs that have
an application other than “None” to determine if an RTD has either a short or a very low
temperature (less than –40°C). When a short/low temperature is detected, the assigned
output relay will operate and a message will appear on the display identifying the RTD that
caused the alarm. It is recommended that if this feature is used, the alarm be programmed
as latched so that intermittent RTDs are detected and corrective action may be taken.
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CHAPTER 5: SETPOINTS
5.7.6
S7 VOLTAGE ELEMENTS
Loss of RRTD Comms Alarm
PATH: S6 RTD TEMPERATURE  LOSS OF RRTD COMMS
LOSS OF RRTD COMMS
LOSS OF RRTD COMMS
ALARM: OFF
Range: Off, Latched, Unlatched
ASSIGN ALARM RELAYS: Range: None, Alarm, Aux1, Aux2, or combinations
Alarm
LOSS OF RRTD COMMS
EVENTS: No
Range: No, Yes
The 369, if connected to a RRTD module, will monitor communications between them. If for
some reason communications is lost or interrupted the 369 can issue an alarm indicating
the failure. This feature is useful to ensure that the remote RTDs are continuously being
monitored.
5.8
S7 Voltage Elements
5.8.1
Description
These elements are not used by the 369 unless the M or B option is installed and the VT
CONNECTION TYPE setpoint (see Section 5.3.2: CT/VT Setup on page –16) is set to
something other than “None”.
5.8.2
Undervoltage
PATH: S7 VOLTAGE ELEMENTS  UNDERVOLTAGE
UNDERVOLTAGE
U/V ACTIVE IF MOTOR
STOPPED: No
Range: No, Yes
UNDERVOLTAGE
ALARM: Off
Range: Off, Latched, Unlatched
ASSIGN ALARM RELAYS: Range: None, Alarm, Aux1, Aux2 or combinations
Alarm
STARTING U/V ALARM
PICKUP: 0.85xRATED
Range: 0.50 to 0.99 x RATED in steps of 0.01
RUNNING U/V ALARM
PICKUP: 0.85xRATED
Range: 0.50 to 0.99 x RATED in steps of 0.01
UNDERVOLTAGE ALARM
DELAY: 3.0 S
Range: 0.0 to 255.0 s in steps of 0.1
UNDERVOLTAGE ALARM
EVENTS: Off
Range: Off, On
UNDERVOLTAGE
TRIP: Off
Range: Off, Latched, Unlatched
ASSIGN TRIP RELAYS:
Trip
Range: None, Trip, Aux1, Aux2 or combinations
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S7 VOLTAGE ELEMENTS
CHAPTER 5: SETPOINTS
STARTING U/V TRIP
PICKUP: 0.80xRATED
Range: 0.50 to 0.99 x RATED in steps of 0.01
RUNNING U/V TRIP
PICKUP: 0.80xRATED
Range: 0.50 to 0.99 x RATED in steps of 0.01
UNDERVOLTAGE TRIP
DELAY: 1.0s
Range: 0.0 to 255.0 s in steps of 0.1
If enabled, an undervoltage trip or alarm occurs once the magnitude of either Vab, Vbc, or
Vca falls below the running pickup level while running or the starting pickup level while
starting, for a period of time specified by the alarm or trip delay (pickup levels are multiples
of motor nameplate voltage).
An undervoltage on a running motor with a constant load results in increased current. The
relay thermal model typically picks up this condition and provides adequate protection.
However, this setpoint may be used in conjunction with time delay to provide additional
protection that may be programmed for advance warning by tripping.
The U/V ACTIVE IF MOTOR STOPPED setpoint may be used to prevent nuisance alarms
or trips when the motor is stopped. If "No" is programmed the undervoltage element will be
blocked from operating whenever the motor is stopped (no phase current and starter
status indicates breaker or contactor open). If the load is high inertia, it may be desirable to
ensure that the motor is tripped off line or prevented from starting in the event of a total
loss or decrease in line voltage. Programming "Yes" for the block setpoint will ensure that
the motor is tripped and may be restarted only after the bus is re-energized.
A typical application of this feature is with an undervoltage of significant proportion that
persists while starting a synchronous motor which may prevent it from coming up to rated
speed within the rated time. This undervoltage may be an indication of a system fault. To
protect a synchronous motor from being restarted while out of step it may be necessary to
use undervoltage to take the motor offline before a reclose is attempted.
5.8.3
Overvoltage
PATH: S7 VOLTAGE ELEMENTS  OVERVOLTAGE
OVERVOLTAGE
OVERVOLTAGE
ALARM: Off
Range: Off, Latched, Unlatched
ASSIGN ALARM RELAYS: Range: None, Alarm, Aux1, Aux2 or combinations
Alarm
5–64
OVERVOLTAGE ALARM
PICKUP: 1.05xRATED
Range: 1.01 to 1.25 x RATED in steps of 0.01
OVERVOLTAGE ALARM
DELAY: 3.0s
Range: 0.0 to 255.0 s in steps of 0.1
OVERVOLTAGE ALARM
EVENTS: Off
Range: Off, On
OVERVOLTAGE
TRIP: Off
Range: Off, Latched, Unlatched
ASSIGN TRIP RELAYS:
Trip
Range: None, Trip, Aux1, Aux2, or combinations
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
CHAPTER 5: SETPOINTS
S7 VOLTAGE ELEMENTS
OVERVOLTAGE TRIP
PICKUP: 1.10xRATED
Range: 1.01 to 1.25 x RATED in steps of 0.01
OVERVOLTAGE TRIP
DELAY: 1.0s
Range: 0.0 to 255.0 s in steps of 0.1
If enabled, once the magnitude of either Vab, Vbc, or Vca rises above the Pickup Level for a
period of time specified by the Delay, a trip or alarm will occur (pickup levels are multiples
of motor nameplate voltage).
An overvoltage on running motor with a constant load will result in decreased current.
However, iron and copper losses increase, causing an increase in motor temperature. The
current overload relay will not pickup this condition and provide adequate protection.
Therefore, the overvoltage element may be useful for protecting the motor in the event of
a sustained overvoltage condition.
The Undervoltage and Overvoltage alarms and trips are activated based upon the
phase to phase voltage regardless of the VT connection type.
Note
NOTE
5.8.4
Phase Reversal
PATH: S7 VOLTAGE ELEMENTS  PHASE REVERSAL
PHASE REVERSAL
PHASE REVERSAL
TRIP: Off
Range: Off, Latched, Unlatched
ASSIGN TRIP RELAYS:
Trip
Range: None, Trip, Aux1, Aux2, or combinations
The 369 Relay can detect reversed phases on the motor. When enabled, this element
detects the phase sequence of both the three-phase voltages and the three-phase
currents as measured by the relay. If the measured three-phase voltages are greater than
50% of the motor rated voltage the Phase Reversal element will ignore the currents and
perform only voltage phase reversal detection.
If the three-phase voltages are not greater than 50% of the motor rated voltage, or
voltages are not available on relay terminals, the Phase reversal element will be activated
after the measured currents are above 5% of the motor FLA. When the Two-speed Motor
feature is enabled, and Speed 1 is active, the Phase Reversal element will be activated
when currents are greater than 5% FLA of the Speed 1 FLA setpoint. When Speed 2 is
active, the Phase Reversal element will be activated after the currents become greater
than 5% FLA of the Speed 2 FLA setpoint.
The element detects the phase reversal condition within 500-700ms and will issue a trip
and block the motor start.
The setting of the phase sequence under S2 SYSTEM SETUP/ CT/VT SETUP/SYSTEM
PHASE SEQUENCE should match the phase sequence of the three-phase voltages
measured on the relay terminals. For Two-Speed Motor applications, the setting under S2
SYSTEM SETUP/ CT/VT SETUP/SYSTEM PHASE SEQUENCE should match the phase
sequence of the currents measured by the relay terminals when in Speed 1.
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S7 VOLTAGE ELEMENTS
CHAPTER 5: SETPOINTS
START
No
Phase reversal protection
enabled?
Yes
Yes
If
Vab > 50% rated &
Vbc>50% rated &
Vca> 50% rated
No
No
Two speed protection
enabled?
Yes
Speed 1
Yes
Is measured voltage phase
sequence = Set SYSTEM
PHASE SEQUENCE?
Is
Ia > 5% FLA &
Ib> 5% FLA &
Ic> 5% FLA
Speed S/W
status?
No
Speed 2
Is
Ia > 5% FLA2&
Ib> 5% FLA2 &
Ic> 5% FLA2
No
No
Is measured current phase
sequence = Set SYSTEM
PHASE SEQUENCE?
Yes
Is measured current phase
sequence = Set SPEED2
PHASE SEQUENCE?
Yes
No
No
Issue Phase Reversal Trip
If the Two-Speed Motor feature is used for Forward and Reverse motor applications, the
setting of the phase sequence under S2 SYSTEM SETUP/CT/VT SETUP/SPEED2
SYSTEM PHASE SEQUENCE will be opposite to the setting of the phase sequence under
S2 SYSTEM SETUP/ CT/VT SETUP/SYSTEM PHASE SEQUENCE.
When the voltage phase reversal detection is active, the phase rotation of the measured
voltages is compared only to S2 SYSTEM SETUP/ CT/VT SETUP/SYSTEM PHASE
SEQUENCE setting, whether the Two-Speed Motor feature is enabled or not.
5–66
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S7 VOLTAGE ELEMENTS
Note
NOTE
If the two-speed feature is used for Forward/Reverse motor applications, the phase
sequence of VT input to the 369 and the SYSTEM PHASE SEQUENCE setpoint in the 369
relay must match the phase sequence required for Forward rotation of the motor. For
correct operation of Phase Reversal trip, the phase sequence of the VT input connections
should not be altered in reverse rotation of the motor.
When the phase reversal detection based on currents is active, the phase rotation of the
measured currents is compared to S2 SYSTEM SETUP/ CT/VT SETUP/SYSTEM PHASE
SEQUENCE setting when in Speed 1, and to S2 SYSTEM SETUP/CT/VT SETUP/SPEED2
SYSTEM PHASE SEQUENCE, when in Speed 2.
5.8.5
Underfrequency
PATH: S7 VOLTAGE ELEMENTS  UNDERFREQUENCY
UNDERFREQUENCY
BLOCK UNDERFREQUENCY Range: 0 to 5000 s in steps of 1
FROM START:
UNDERFREQUENCY
ALARM: Off
Range: Off, Latched, Unlatched
ASSIGN ALARM RELAYS: Range: None, Alarm, Aux1, Aux2, or combinations
Alarm
UNDERFREQUENCY ALARM Range: 20.00 to 70.00 Hz in steps of 0.01
LEVEL: 59.50 Hz
UNDERFREQUENCY ALARM Range: 0.0 to 255.0 s in steps of 0.1
DELAY: 1.0s
UNDERFREQUENCY ALARM Range: Off, On
EVENTS: Off
UNDERFREQUENCY
TRIP: Off
Range: Off, Latched, Unlatched
ASSIGN TRIP RELAYS:
Trip
Range: None, Trip, Aux1, Aux2, or combinations
UNDERFREQUENCY TRIP
LEVEL: 59.50 Hz
Range: 20.00 to 70.00 Hz in steps of 0.01
UNDERFREQUENCY TRIP
DELAY: 1.0s
Range: 0.0 to 255.0 s in steps of 0.1
Once the frequency of the phase AN or AB voltage (depending on wye or delta connection)
falls below the underfrequency pickup level, a trip or alarm will occur.
This feature may be useful for load shedding applications on large motors. It could also be
used to load shed an entire feeder if the trip was assigned to an upstream breaker.
Underfrequency can also be used to detect loss of power to a synchronous motor. Due to
motor generation, sustained voltage may prevent quick detection of power loss. Therefore,
to quickly detect the loss of system power, the decaying frequency of the generated
voltage as the motor slows can be used.
The Underfrequency element is not active when the motor is stopped.
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S8 POWER ELEMENTS
5.8.6
CHAPTER 5: SETPOINTS
Overfrequency
PATH: S7 VOLTAGE ELEMENTS  OVERFREQUENCY
OVERFREQUENCY
BLOCK OVERFREQUENCY
FROM START: 1 s
Range: 0 to 5000 s in steps of 1
OVERFREQUENCY
ALARM: Off
Range: Off, Latched, Unlatched
ASSIGN ALARM RELAYS: Range: None, Alarm, Aux1, Aux2, or combinations
Alarm
OVERFREQUENCY ALARM
LEVEL: 60.50 Hz
Range: 20.00 to 70.00 Hz in steps of 0.01
OVERFREQUENCY ALARM
DELAY: 1.0s
Range: 0.0 to 255.0 s in steps of 0.1
OVERFREQUENCY ALARM
EVENTS: Off
Range: Off, On
OVERFREQUENCY
TRIP: Off
Range: Off, Latched, Unlatched
ASSIGN TRIP RELAYS:
Trip
Range: None, Trip, Aux1, Aux2, or combinations
OVERFREQUENCY TRIP
LEVEL: 60.50 Hz
Range: 20.00 to 70.00 Hz in steps of 0.01
OVERFREQUENCY TRIP
DELAY: 1.0s
Range: 0.0 to 255.0 s in steps of 0.1
Once the frequency of the phase AN or AB voltage (depending on wye or delta connection)
rises above the overfrequency pickup level, a trip or alarm will occur.
This feature may be useful for load shedding applications on large motors. It could also be
used to load shed an entire feeder if the trip was assigned to an upstream breaker.
The Overfrequency element is not active when the motor is stopped.
5.9
S8 Power Elements
5.9.1
Description
These protective elements rely on CTs and VTs being installed and setpoints programmed.
The power elements are only used if the 369 has option M or B installed. By convention, an
induction motor consumes Watts and vars. This condition is displayed on the 369 as
+Watts and +vars. A synchronous motor can consume Watts and vars or consume Watts
and generate vars. These conditions are displayed on the 369 as +Watts, +vars, and
+Watts, –vars respectively.
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S8 POWER ELEMENTS
FIGURE 5–12: Power Measurement Conventions
In Two-Speed Motor protection involving Forward/Reverse motor application, in motor
reverse direction the phase sequence of the three-phase voltage input is corrected
internally for the purpose of power metering. The following power elements may not
perform correctly if the phase sequence of the three-phase voltages measured by the relay
is different than the SYSTEM PHASE SEQUENCE setting:
• LAG POWER FACTOR
• POSITIVE REACTIVE POWER
• NEGATIVE REACTIVE POWER
• UNDERPOWER
• REVERSE POWER
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S8 POWER ELEMENTS
5.9.2
CHAPTER 5: SETPOINTS
Lead Power Factor
PATH: S8 POWER ELEMENTS  LEAD POWER FACTOR
LEAD POWER FACTOR
BLOCK LEAD PF
FROM START: 1 s
Range: 0 to 5000 s in steps of 1
LEAD POWER FACTOR
ALARM: Off
Range: Off, Latched, Unlatched
ASSIGN ALARM RELAYS: Range: None, Alarm, Aux1, Aux2 or combinations
Alarm
LEAD POWER FACTOR
ALARM LEVEL: 0.30
Range: 0.05 to 0.99 in steps of 0.01
LEAD POWER FACTOR
ALARM DELAY: 1.0s
Range: 0.1 to 255.0 s in steps of 0.1
LEAD POWER FACTOR
ALARM EVENTS: Off
Range: Off, On
LEAD POWER FACTOR
TRIP: Off
Range: Off, Latched, Unlatched
ASSIGN TRIP RELAYS:
Trip
Range: None, Trip, Aux1, Aux2 or combinations
LEAD POWER FACTOR
TRIP LEVEL: 0.30
Range: 0.05 to 0.99 in steps of 0.01
LEAD POWER FACTOR
TRIP DELAY: 1.0s
Range: 0.1 to 255.0 s in steps of 0.1
If the 369 is applied on a synchronous motor, it is desirable not to trip or alarm on power
factor until the field has been applied. Therefore, this feature can be blocked until the
motor comes up to speed and the field is applied. From that point forward, the power
factor trip and alarm elements will be active. Once the power factor is less than the lead
level, for the specified delay, a trip or alarm will occur indicating a lead condition.
The lead power factor alarm can be used to detect over-excitation or loss of load.
5.9.3
Lag Power Factor
PATH: S8 POWER ELEMENTS  LAG POWER FACTOR
LAG POWER FACTOR
BLOCK LAG PF
FROM START: 1 s
Range: 0 to 5000 s in steps of 1
LAG POWER FACTOR
ALARM: Off
Range: Off, Latched, Unlatched
ASSIGN ALARM RELAYS: Range: None, Alarm, Aux1, Aux2, or combinations
Alarm
5–70
LAG POWER FACTOR
ALARM LEVEL: 0.85
Range: 0.05 to 0.99 in steps of 0.01
LAG POWER FACTOR
ALARM DELAY: 1.0s
Range: 0.1 to 255.0 s in steps of 0.1
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S8 POWER ELEMENTS
LAG POWER FACTOR
ALARM EVENTS: Off
Range: Off, On
LAG POWER FACTOR
TRIP: Off
Range: Off, Latched, Unlatched
ASSIGN TRIP RELAYS:
Trip
Range: None, Trip, Aux1, Aux2 or combinations
LAG POWER FACTOR
TRIP LEVEL: 0.80
Range: 0.05 to 0.99 in steps of 0.01
LAG POWER FACTOR
TRIP DELAY: 1.0s
Range: 0.1 to 255.0 s in steps of 0.1
If the 369 is applied on a synchronous motor, it is desirable not to trip or alarm on power
factor until the field has been applied. Therefore, this feature can be blocked until the
motor comes up to speed and the field is applied. From that point forward, the power
factor trip and alarm elements will be active. Once the power factor is less than the lag
level, for the specified delay, a trip or alarm will occur indicating lag condition.
The power factor alarm can be used to detect loss of excitation and out of step for a
synchronous motor.
5.9.4
Positive Reactive Power
PATH: S8 POWER ELEMENTS  POSITIVE REACTIVE POWER
POSITIVE REACTIVE
POWER (kvar)
BLOCK +kvar ELEMENT
FROM START: 1 s
Range: 0 to 5000 s in steps of 1
POSITIVE kvar
ALARM: Off
Range: Off, Latched, Unlatched
ASSIGN ALARM RELAYS: Range: None, Alarm, Aux1, Aux2 or combinations
Alarm
POSITIVE kvar ALARM
LEVEL: 10 kvar
Range: 1 to 25000 kvar in steps of 1
POSITIVE kvar
ALARM DELAY: 1.0 s
Range: 0.1 to 255.0 s in steps of 0.1
POSITIVE kvar
ALARM EVENTS: Off
Range: Off, On
POSITIVE kvar
TRIP:
Range: Off, Latched, Unlatched
ASSIGN TRIP RELAYS:
Trip
Range: None, Trip, Aux1, Aux2 or combinations
POSITIVE kvar TRIP
LEVEL: 25 kvar
Range: 1 to 25000 kvar in steps of 1
POSITIVE kvar
TRIP DELAY: 1.0 s
Range: 0.1 to 255.0 s in steps of 0.1
If the 369 is applied on a synchronous motor, it is desirable not to trip or alarm on kvar until
the field has been applied. Therefore, this feature can be blocked until the motor comes up
to speed and the field is applied. From that point forward, the kvar trip and alarm elements
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CHAPTER 5: SETPOINTS
will be active. Once the kvar level exceeds the positive level, for the specified delay, a trip or
alarm will occur indicating a positive kvar condition. The reactive power alarm can be used
to detect loss of excitation and out of step.
5.9.5
Negative Reactive Power
PATH: S8 POWER ELEMENTS  NEGATIVE REACTIVE POWER
NEGATIVE REACTIVE
POWER (kvar)
BLOCK -kvar ELEMENT
FROM START: 1 s
Range: 0 to 5000 s in steps of 1
NEGATIVE kvar
ALARM: Off
Range: Off, Latched, Unlatched
ASSIGN ALARM RELAYS: Range: None, Alarm, Aux1, Aux2, or combinations
Alarm
NEGATIVE kvar ALARM
LEVEL: 10 kvar
Range: 1 to 25000 kvar in steps of 1
NEGATIVE kvar
ALARM DELAY: 1.0 s
Range: 0.1 to 255.0 s in steps of 0.1
NEGATIVE kvar
ALARM EVENTS: Off
Range: Off, On
NEGATIVE kvar
TRIP: Off
Range: Off, Latched, Unlatched
ASSIGN TRIP RELAYS:
Trip
Range: None, Trip, Aux1, Aux2, or combinations
NEGATIVE kvar TRIP
LEVEL: 25 kvar
Range: 1 to 25000 kvar in steps of 1
NEGATIVE kvar
TRIP DELAY: 1.0s
Range: 0.1 to 255.0 s in steps of 0.1
When using the 369 on a synchronous motor, it is desirable not to trip or alarm on kvar
until the field has been applied. As such, this feature can be blocked until the motor comes
up to speed and the field is applied. From that point forward, the kvar trip and alarm
elements will be active. Once the kvar level exceeds the negative level for the specified
delay, a trip or alarm occurs, indicating a negative kvar condition. The reactive power
alarm can be used to detect overexcitation or loss of load.
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5.9.6
S8 POWER ELEMENTS
Underpower
PATH: S8 POWER ELEMENTS  UNDERPOWER
UNDERPOWER
BLOCK UNDERPOWER
FROM START: 1 s
Range: 0 to 15000 s in steps of 1
UNDERPOWER
ALARM: Off
Range: Off, Latched, Unlatched
ASSIGN ALARM RELAYS: Range: None, Alarm, Aux1, Aux2 or combinations
Alarm
UNDERPOWER ALARM
LEVEL: 2 kW
Range: 1 to 25000 kW in steps of 1
UNDERPOWER
ALARM DELAY: 1 s
Range: 0.5 to 255.0 s in steps of 0.5
UNDERPOWER
ALARM EVENTS: Off
Range: Off, On
UNDERPOWER
TRIP: Off
Range: Off, Latched, Unlatched
ASSIGN TRIP RELAYS:
Trip
Range: None, Trip, Aux1, Aux2, or combinations
UNDERPOWER TRIP
LEVEL: 1 kW
Range: 1 to 25000 kW in steps of 1
UNDERPOWER
TRIP DELAY: 1 s
Range: 0.5 to 255.0 s in steps of 0.5
If enabled, a trip or alarm occurs when the magnitude of three-phase total real power falls
below the pickup level for a period of time specified by the delay. The underpower element
is active only when the motor is running and will be blocked upon the initiation of a motor
start for a period of time defined by the BLOCK UNDERPOWER FROM START setpoint
(e.g. this block may be used to allow pumps to build up head before the underpower
element trips or alarms). A value of 0 means the feature is not blocked from start;
otherwise the feature is disabled when the motor is stopped and also from the time a start
is detected until the time entered expires. The pickup level should be set lower than motor
loading during normal operations.
Underpower may be used to detect loss of load conditions. Loss of load conditions will not
always cause a significant loss of current. Power is a more accurate representation of
loading and may be used for more sensitive detection of load loss or pump cavitation. This
may be especially useful for detecting process related problems.
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5.9.7
CHAPTER 5: SETPOINTS
Reverse Power
PATH: S8 POWER ELEMENTS  REVERSE POWER
REVERSE POWER
BLOCK REVERSE POWER
FROM START: 1 s
Range: 0 to 50000 s in steps of 1
REVERSE POWER
ALARM: Off
Range: Off, Latched, Unlatched
ASSIGN ALARM RELAYS: Range: None, Alarm, Aux1, Aux2, or combination
Alarm
REVERSE POWER ALARM
LEVEL: 1 kW
Range: 1 to 25000 kW in steps of 1
REVERSE POWER
ALARM DELAY: 1.0 s
Range: 0.5 to 30.0 s in steps of 0.5
REVERSE POWER
ALARM EVENTS: Off
Range: Off, On
REVERSE POWER
TRIP: Off
Range: Off, Latched, Unlatched
ASSIGN TRIP RELAYS:
Trip
Range: None, Trip, Aux1, Aux2, or combinations
REVERSE POWER TRIP
LEVEL: 1 kW
Range: 1 to 25000 kW in steps of 1
REVERSE POWER
TRIP DELAY: 1.0 s
Range: 0.5 to 30 s in steps of 0.5
If enabled, once the magnitude of three-phase total real power exceeds the pickup level in
the reverse direction (negative kW) for a period of time specified by the delay, a trip or
alarm will occur.
Note
NOTE
The minimum power measurement magnitude is determined by the phase CT
minimum of 5% rated CT primary. If the reverse power level is set below this, a trip or
alarm will only occur once the phase current exceeds the 5% cutoff.
5.10 S9 Digital Inputs
5.10.1 Digital Input Functions
Description
Any of the digital inputs may be selected and programmed as a separate General Switch,
Digital Counter, or Waveform Capture Input. The xxxxx term in the following menus refers
to the configurable switch input function – either the Spare Switch, Emergency Restart,
Differential Switch, Speed Switch, or Remote Reset inputs described in the following
sections.
5–74
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General
GENERAL SWITCH
NAME: General
Range: 12 character alphanumeric
Only seen if function is selected as General
MESSAGE
GENERAL SWITCH
TYPE: NO
Range: NO (normally open), NC (normally closed)
Only seen if function is selected as General
MESSAGE
BLOCK INPUT FROM
START: 0 s
Range: 0 to 5000 s in steps of 1
Only seen if function is selected as General
MESSAGE
GENERAL SWITCH
ALARM: Off
Range: Off, Latched, Unlatched
Only seen if function is selected as General
MESSAGE
ASSIGN ALARM RELAYS: Range: None, Alarm, Aux1, Aux2, or combinations
Only seen if function is selected as General
Alarm
MESSAGE
GENERAL SWITCH
ALARM DELAY: 5.0 s
Range: 0.1 to 5000.0 s in steps of 0.1
Only seen if function is selected as General
MESSAGE
RECORD ALARMS AS
EVENTS: No
Range: No, Yes
Only seen if function is selected as General
MESSAGE
GENERAL SWITCH
TRIP: Off
Range: Off, Latched, Unlatched
Only seen if function is selected as General
MESSAGE
ASSIGN TRIP RELAYS:
Trip
Range: None, Trip, Aux1, Aux2, or combinations
Only seen if function is selected as General
MESSAGE
GENERAL SWITCH
TRIP DELAY: 5.0 s
Range: 0.1 to 5000.0 s in steps of 0.1
Only seen if function is selected as General
xxxxx SW FUNCTION:
General
GENERAL SWITCH NAME can not be edited using front panel. EnerVista 369 Setup software
should be used to set the GENERAL SWITCH NAME.
Note
NOTE
The above selections will be shown if the in the corresponding menu if SPARE SW
FUNCTION, EMERGENCY FUNCTION, DIFF SW FUNCTION, or SPEED SW
FUNCTION setpoints are set to “General”. Refer to the individual sections for Spare Switch,
Emergency Restart, Differential Switch, Speed Switch, or Remote Reset below for
additional function-specific setpoints.
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Digital Counter
COUNTER
NAME: Counter
Range: 8 character alphanumeric
Only seen if function is Digital Counter
MESSAGE
COUNTER
UNITS: Units
Range: 6 character alphanumeric
Only seen if function is Digital Counter
MESSAGE
COUNTER
TYPE: Increment
Range: Increment, Decrement
Only seen if function is Digital Counter
MESSAGE
DIGITAL COUNTER
ALARM: Off
Range: Off, Latched, Unlatched
Only seen if function is Digital Counter
MESSAGE
ASSIGN ALARM RELAYS: Range: None, Alarm, Aux1, Aux2, or combinations.
Only seen if function is Digital Counter
Alarm
MESSAGE
COUNTER ALARM LEVEL: Range: 0 to 65535 in steps of 1
Only seen if function is Digital Counter
100
MESSAGE
RECORD ALARMS AS
EVENTS: No
xxxxx SW FUNCTION:
Digital Counter
Range: No, Yes
Only seen if function is Digital Counter
The above selections will be shown if the SPARE SW FUNCTION, EMERGENCY
FUNCTION, DIFF SW FUNCTION, or SPEED SW FUNCTION setpoints are set to “Digital
Counter”. Refer to the individual sections for Spare Switch, Emergency Restart, Differential
Switch, Speed Switch, or Remote Reset below for additional function-specific setpoints.
Only one digital input may be selected as a digital counter at a time. User defined units
and counter name may be defined and these will appear on all counter related actual
value and alarm messages. To clear a digital counter alarm, the alarm level must be
increased or the counter must be cleared or preset to a lower value.
Waveform Capture
The Waveform Capture setting for the digital inputs allows the 369 to capture a waveform
upon command (contact closure). The captured waveforms can then be displayed via the
EnerVista 369 Setup program.
DeviceNet Control
This function is available for the DeviceNet option only. The digital input set with the
DeviceNet control function and the switch status closed allows motor start, motor stop,
and fault reset commands through DeviceNet communications.
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S9 DIGITAL INPUTS
5.10.2 Spare Switch
PATH: S9 DIGITAL INPUTS  SPARE SWITCH
SPARE SW FUNCTION:
Off
Range: Off, Starter Status, General, Digital Counter,
Waveform Capture, DeviceNet Control
MESSAGE
STARTER AUX CONTACT
TYPE: 52a
Range: 52a, 52b
Only seen if FUNCTION is "Starter Status"
MESSAGE
STARTER OPERATION
MONITOR DELAY: 3 s
Range: OFF, 0 to 60 s in steps of 1
Only seen if FUNCTION is “Starter Status”
MESSAGE
STARTER OPERATION
TYPE: Off
Range: Off, Latched, Unlatched. Only seen if SPARE
SW FUNCTION is “Starter Status” and
MESSAGE
ASSIGN RELAYS:
None
Range: None, Trip, Alarm, Aux1, Aux2, or combinations.
Only seen if SPARE SW FUNCTION is
“Starter Status” and STARTER
OPERATION MONITOR DELAY is not
“Off”.
SPARE SWITCH
STARTER OPERATION MONITOR
See Section 5.10.1: Digital Input Functions for an explanation of the spare switch functions.
It is recommended that the auxiliary contact from the main breaker for starter status
monitoring is wired to the Spare Switch digital input terminals 51 and 52 for the following
reasons:
•
To avoid undesired operation of START/INHIBIT elements during speed switching.
•
To ensure applying the SPEED2 ACCEL. TIMER FROM 1-2, when switched from
Speed 1 to Speed 2. If the breaker status is not monitored , the 369 relay may detect
MOTOR STOPPED status, and apply ACCEL. TIMER FROM START, when
switching to Speed 2.
•
To ensure Learned values such as Learned Starting Thermal Capacity, Learned
Starting Current, and Learned Acceleration Time, are correctly calculated irrespective
of speed switching.
In addition to regular selections, the Spare Switch may be used as a starter status contact
input. An auxiliary ‘52a’ type contact follows the state of the main contactor or breaker
and an auxiliary ‘52b’ type contact is in the opposite state. This feature is recommended
for use on all motors. It is essential for proper operation of start inhibits (i.e., starts/hour,
time between starts, start inhibit, restart block, backspin start inhibit), especially when the
motor may be run lightly or unloaded.
A motor stop condition is detected when the current falls below 5% of CT. When SPARE
SWITCH is programmed as “Starter Status”, motor stop conditions are detected when the
current falls below 5% of CT and the breaker is open. Enabling the Starter Status and
wiring the breaker contactor to the Spare Switch eliminates nuisance lockouts initiated by
the 369 if the motor (synchronous or induction) is running unloaded or idling, and if the
STARTS/HOUR , TIME BETWEEN STARTS, START INHIBIT, RESTART BLOCK , and
BACKSPIN START INHIBIT are programmed.
In addition, there may be applications where current is briefly present after the breaker is
opened on a motor stop (for example, discharge from power factor correction capacitors).
In such a case, the 369 will detect this current as an additional start. To prevent this from
occurring, the STARTER OPERATION MONITOR DELAY setpoint is used. If this setpoint
is programmed to any value other than “OFF”, a motor start is logged only if current above
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5% of the CT is present and the breaker is closed (for an “52a” type contact). If the breaker
is open (for an “52a” type contact) and the current above 5% of CT is present for longer
than the STARTER OPERATION MONITOR DELAY time, then a trip or alarm will occur
(according to the relay settings). If the trip relay is assigned under the ASSIGN RELAYS
setpoint, then a trip will occur and a trip event will be recorded; otherwise, an alarm will
occur and an alarm event recorded. If the STARTER OPERATION MONITOR DELAY is
“OFF”, this functionality will be disabled.
The Access switch is predefined and is non programmable.
Note
NOTE
5.10.3 Emergency Restart
PATH: S9 DIGITAL INPUTS  EMERGENCY RESTART
EMERGENCY RESTART
EMERGENCY FUNCTION:
Emergency Restart
Range: Off, Emergency Restart, General, Digital
Counter, Waveform Capture, DeviceNet
Control, Speed Switch1
1.Shown only if two-speed motor protection is enabled
See Section 5.10.1: Digital Input Functions on page –74 for an explanation of the
emergency restart functions. In addition to the normal selections, the Emergency Restart
Switch may be used as a emergency restart input to the 369 to override protection for the
motor.
When the emergency restart switch is closed all trip and alarm functions are reset.
Thermal capacity used is set to zero and all protective elements are disabled until the
switch is opened. Starts per hour are also reduced by one each time the switch is closed.
SPEED SWITCH TIME
DELAY: 2.0 s
Range: 0.5 to 100.0 seconds in steps of 0.5 s
Only seen if FUNCTION is "Speed Switch"
SPEED SW TRIP RELAY: Range: None, Trip, Aux1, Aux 2, or combinations
Only seen if FUNCTION is "Speed Switch"
Trip
Refer to 5.10.5: Speed Switch for setting details. The Speed switch function uses the input
from terminals 55-56, but applies different Speed Switch Time Delays for Speed 1 and
Speed 2. Refer to section 5.13.4: Speed 2 Acceleration for the Speed 2 Speed Switch time
delay setting
5.10.4 Differential Switch
PATH: S9 DIGITAL INPUTS  DIFFERENTIAL SWITCH
DIFFERENTIAL SWITCH
DIFF SW FUNCTION:
Differential Switch
DIFF SW TRIP RELAY:
Trip
Range: Off, Differential Switch, General, Digital
Counter, Waveform Capture, DeviceNet
Control, Speed Switch1.
Range: None, Trip, Aux1, Aux2 or combinations
Only seen if FUNCTION is "Differential Switch".
1.Shown only if two-speed motor protection is enabled
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See Section 5.10.1: Digital Input Functions on page –74 for an explanation of differential
switch functions. In addition to the normal selections, the Differential Switch may be used
as a contact input for a separate external 86 (differential trip) relay. Contact closure will
cause the 369 relay to issue a differential trip.
SPEED SWITCH TIME
DELAY: 2.0 s
Range: 0.5 to 100.0 seconds in steps of 0.5 s
Only seen if FUCTION is "Speed Switch"
SPEED SW TRIP RELAY: Range: None, Trip, Aux1, Aux 2, or combinations
Only seen if FUNCTION is "Speed Switch"
Trip
Refer to 5.10.5: Speed Switch for setting details. The Speed switch function uses the input
from terminals 55-56, but applies different Speed Switch Time Delays for Speed 1 and
Speed 2. Refer to section 5.13.4: Speed 2 Acceleration for the Speed 2 Speed Switch time
delay setting
5.10.5 Speed Switch
PATH: S9 DIGITAL INPUTS  SPEED SWITCH
SPEED SWITCH
SPEED SW FUNCTION:
Speed Switch
Range: Off, Speed Switch, General, Digital Counter,
Waveform Capture, DeviceNet Control
SPEED SWITCH TIME
DELAY: 2.0s
Range: 0.5 to 100.0s in steps of 0.5
Only seen if FUNCTION is "Speed Switch"
SPEED SW TRIP RELAY: Range: None, Trip, Aux1, Aux2 or combinations
Only seen if FUNCTION is "Speed Switch"
Trip
See Section 5.10.1: Digital Input Functions for an explanation of Speed Switch functions. In
addition to the normal selections, the Speed Switch may be used as an input for an
external Speed Switch. This allows the 369 to utilize a speed device for locked rotor
protection. During a motor start, if no contact closure occurs within the programmed time
delay, a trip will occur. The speed input must be opened for a Speed Switch trip to be reset
SPEED SWITCH
SPEED SW FUNCTION:
Two Speed Monitor
.
Upon enabling the 2-speed motor application (ENABLE TWO-SPEED MOTOR = Yes), this
input is no longer programmable but signifies the motor speed at any given time. “Open” is
recognized as Speed 1, and “closed” is recognized as Speed 2. The Speed Switch (terminals
55-56) is automatically designated for two-speed motor protection and will display
message “Two Speed Monitor”. Under this application, the switch cannot be assigned to
perform any other function.
The 369 relay monitors the following five stages of the motor: “Stopped”, “Starting”,
“Running”, “Overload”, and “Tripped”. Flow chart on status detection for single speed motor
application is found under APPLICATIONS/MOTOR STATUS DETECTION chapter of
this manual.
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To determine the status of the two-speed motor when switching in Speed 1, Speed 2,
Speed 1-2, or from Speed 2-1, the relay uses the following information: Breaker status –
auxiliary contact wired to relay’s Spare Switch terminals 51-52, output from motor’s
Speed 2 contactor wired to Speed Switch terminals 55-56, and motor phase currents.
For motor status detection when switching from start in Speed 2, refer to chapter 7.6.1
Motor Status Detection which outlines the motor status, when switching from start in
Speed 1.
By maintaining breaker “closed”, and motor status RUNNING in Speed 1, switching from
Speed 1 to Speed 2 will not change the status of the motor. The relay will still show status
RUNNING, even when during speed switching, both Speed 1 and Speed 2 contactors are
open, and the motor current is below 5% of the CT primary set for Speed 1. Upon detection
of Speed Switch contact input “closed”, the relay applies the Speed 2 settings for CT
primary and FLA. The SPEED2 ACCEL TIMER FROM START and ACCEL TIMER FROM
SPEED 1-2 start upon detection of Speed Switch status “closed”.
5.10.6 Remote Reset
PATH: S9 DIGITAL INPUTS  REMOTE RESET
REMOTE RESET
REMOTE SW FUNCTION:
Remote Reset
Range: Off, Remote Reset, General, Digital Counter,
Waveform Capture, DeviceNet Control, Speed
Switch1
1.Shown only if two-speed motor protection is enabled.
See the following section for an explanation of remote reset functions. In addition to the
normal selections, the Remote Reset may be used as a contact input to reset the relay.
SPEED SWITCH TIME
DELAY: 2.0 s
Range: 0.5 to 100.0 seconds in steps of 0.5 s
Only seen if FUNCTION is "Speed Switch"
SPEED SW TRIP RELAY: Range: None, Trip, Aux1, Aux 2, or combinations
Only seen if FUNCTION is "Speed Switch"
Trip
Refer to 5.10.5: Speed Switch for setting details. The Speed switch function uses the input
from terminals 55-56, but applies different Speed Switch Time Delays for Speed 1 and
Speed 2. Refer to section 5.13.4: Speed 2 Acceleration for the Speed 2 Speed Switch time
delay setting
5.11 S10 Analog Outputs
5.11.1 Analog Outputs
PATH: S10 ANALOG OUTPUTS  ANALOG OUTPUT 1(4)
ANALOG OUTPUT 1
5–80
ANALOG OUTPUT 1:
DISABLED
Range: Disabled, Enabled
ANALOG OUTPUT 1
RANGE: 0-1 mA
Range: 0–1mA, 0–20 mA, 4–20 mA
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S10 ANALOG OUTPUTS
ANALOG OUTPUT 1
POWER FACTOR:
ANALOG OUTPUT 1
SCALING TYPE:FLAT
ANALOG OUTPUT 1:
Phase A Current
Range: See Analog Output selection table
ANALOG OUTPUT 1
MIN: 0 A
Range: See Analog Output selection table
ANALOG OUTPUT 1
MAX: 100 A
Range: See Analog Output selection table
Range: Flat, Step
The analog output parameters are indicated in the following table:
Table 5–3: Analog Output Parameters
PARAMETER NAME
RANGE /UNITS
STEP
DEFAULT
MINIMUM
MAXIMUM
Phase A Current
0 to 65535 A
1
0
100
Phase B Current
0 to 65535 A
1
0
100
Phase C Current
0 to 65535 A
1
0
100
Avg. Phase Current
0 to 65535 A
1
0
100
AB Line Voltage
0 to 65000 V
1
3200
4500
BC Line Voltage
0 to 65000 V
1
3200
4500
CA Line Voltage
0 to 65000 V
1
3200
4500
Avg. Line Voltage
0 to 65000 V
1
3200
4500
Phase AN Voltage
0 to 65000 V
1
1900
2500
Phase BN Voltage
0 to 65000 V
1
1900
2500
Phase CN Voltage
0 to 65000 V
1
1900
2500
Avg. Phase Voltage
0 to 65000 V
1
1900
2500
Hottest Stator RTD
–40 to +200°C or
–40 to +392°F
1
0
200
RTD #1 to 12
–40 to +200°C or
–40 to +392°F
1
–40
200
Power Factor
–0.99 to 1.00
0.01
0.01
0.80
Reactive Power
–32000 to 32000 kvar
1
0
750
Real Power
–32000 to 32000 kW
1
0
1000
Apparent Power
0 to 65000 kVA
1
0
1250
Thermal Capacity
Used
0 to 100%
1
0
100
Relay Lockout Time
0 to 999 minutes
1
0
150
Motor Load
0.00 to 20.00 x FLA
0.01
0.00
1.25
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Table 5–3: Analog Output Parameters
PARAMETER NAME
MWhrs
RANGE /UNITS
0 to 65535 MWhrs
STEP
1
DEFAULT
MINIMUM
MAXIMUM
0
65535
5.11.2 Analog Output Scaling Change
The measured Power Factor values can be transferred to any of the four analogue outputs.
There are two options for scaling power factor: Flat and Step.
FIGURE 5–13: Flat Scaling
Flat scaling is a simple ascending linear function. It covers all selected ranges. Figure 5-13
shows the graph for the 4 to 20 mA output range in Flat Scaling. It covers the entire
selected power factor range from the minimum (-0.99) to the maximum setting (+1.00).
FIGURE 5–14: Step Scaling
Step scaling is a discontinuous descending linear function with one step-up point. Figure
5-14 shows the related graph for the 4 to 20 mA output range in Step Scaling. It covers all
the entire selected power factor range from the minimum (-0.01) to the maximum setting
(+0.00).
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S11 369 TESTING
5.12 S11 369 Testing
5.12.1 Test Output Relays
PATH: S11 369 TESTING  TEST OUTPUT RELAYS
TEST OUTPUT RELAYS
FORCE TRIP RELAY:
Disabled
Range: Disabled, Energized, De-energized
FORCE TRIP RELAY
DURATION: Static
Range: Static, 1 to 300 s in steps of 1
FORCE AUX1 RELAY:
Disabled
Range: Disabled, Energized, De-energized
FORCE AUX1 RELAY
DURATION: Static
Range: Static, 1 to 300 s in steps of 1
FORCE AUX2 RELAY:
Disabled
Range: Disabled, Energized, De-energized
FORCE AUX2 RELAY:
DURATION: Static
Range: Static, 1 to 300 s in steps of 1
FORCE ALARM RELAY:
Disabled
Range: Disabled, Energized, De-energized
FORCE ALARM RELAY
DURATION: Static
Range: Static, 1 to 300 s in steps of 1
The Test Output Relay feature provides a method of performing checks on all relay contact
outputs. This feature is not meant for control purposes during operation of the motor. For
control purposes, the force output relays functionality (refer to Force Output Relays on
page 5–33) is used.
The forced state, if enabled (energized or de-energized), forces the selected relay into the
programmed state for as long as the programmed duration. After the programmed
duration expires, the forced relay will return to it's non-forced physical state. The 369 will
continue to remain in Test Mode until the "Force Relay" setpoint has been set back to
"Disabled" for any relays being tested. If the duration is programmed as Static, the forced
state will remain in effect until changed or disabled. If control power to the 369 is
interrupted, any forced relay condition will be removed.
When the relays in this feature are programmed to any value other than “Disabled”, the In
Service LED on the front panel will turn on. The provides notification that the relay is not
currently operating in a normal condition.
The OUTPUT STATUS LED on the front display panel of the 369 is lit when the respective
output relay is in an energized state.
Note
NOTE
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5.12.2 Test Analog Outputs
PATH: S11 369 TESTING  TEST ANALOG OUTPUTS
TEST ANALOG OUTPUTS
FORCE ANALOG
OUTPUT 1: Off
Range: Off, 1 to 100% in steps of 1
FORCE ANALOG
OUTPUT 2: Off
Range: Off, 1 to 100% in steps of 1
FORCE ANALOG
OUTPUT 3: Off
Range: Off, 1 to 100% in steps of 1
FORCE ANALOG
OUTPUT 4: Off
Range: Off, 1 to 100% in steps of 1
The Test Analog Output setpoints may be used during startup or testing to verify that the
analog outputs are functioning correctly. It may also be used when the motor is running to
give manual or communication control of an analog output. Forcing an analog output
overrides its normal functionality.
When the Force Analog Outputs Function is enabled, the output will reflect the forced value
as a percentage of the range 4 to 20 mA, 0 to 20 mA, or 0 to 1 mA. Selecting Off will place
the analog output channels back in service, reflecting the parameters programmed to
each.
5.13 S12 Two-speed Motor
5.13.1 Description
The two-speed motor feature provides adequate protection for a two-speed motor. This
assumes the following values can differ between the two speeds: SPEED SWITCH status,
CT primary, motor FLA, and the phase sequence. The relay accommodates these
differences in the following protection functions: THERMAL MODEL , OVERLOAD
CURVES, OVERLOAD ALARM, SHORT CIRCUIT, MECHANICAL JAM,
UNDERCURRENT, CURRENT UNBALANCE, and ACCELERATION TRIP.
In order to utilize this feature the digital inputs signifying motor energization (breaker) and
speed are wired as explained under SETPOINTS/S9 DIGITAL INPUT FUNCTIONS
chapter of this manual. Also, the enable setpoint for this function under SYSTEM SETUP /
CT/VT SETUP/ENABLE 2-SPEED MOTOR is set to “Yes’, and the fundamental motor
parameters as referring to Speeds 1 and 2 are programmed under SYSTEM SETUP / CT/
VT SETUP.
The Speed 2 settings are provided under the following extra menu and share the same
function settings, that is under Speed 2. A given function will respond the same way as
under Speed 1.
S12 SETPOINTS
TWO-SPEED MOTOR
5–84
SPEED2 O/L CURVES
See page 5–85
SPEED2 UNDERCURRENT
See page 5–87
SPEED2 ACCELERATION
See page 5–88
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The relay allows for separate settings of the three listed features independently for Speed 1
and Speed 2. Note that the Speed 1 settings are provided under:
S3 OVERLOAD PROTECTION/THERMAL MODEL with setting of overload pickup level
corresponding to the FLA of Speed 1.
S3 OVERLOAD PROTECTION/OVERLOAD CURVE with selection of curve type
corresponding to Speed 1 thermal overload,
S4 CURRENT ELEMENTS/UNDERCURRENT with settings for undercurrent alarm and
trip expressed in times FLA of Speed 1, and
S5 MOTOR START/INHIBIT/ACCELERATION TRIP setting of the acceleration timer
from start referring to start in Speed 1.
5.13.2 Speed 2 Overload Curves
PATH: S12 TWO-SPEED MOTOR SPEED2 O/L CURVES
SPEED2 O/L CURVES
SPEED2 STANDARD
CURVE NUMBER: 1
Range: 1 to 15 in steps of 1
Only seen if CURVE STYLE is Standard
SPEED2 TIME TRIP AT
1.01xFLA: 17415s
Range: 0 to 65534 s in steps of 1
Only seen if CURVE STYLE is Custom
SPEED2 TIME TRIP AT
1.05xFLA: 3415 s
Range: 0 to 65534 s in steps of 1
Only seen if CURVE STYLE is Custom
SPEED2 TIME TRIP AT
1.10xFLA: 1667 s
Range: 0 to 65534 s in steps of 1
Only seen if CURVE STYLE is Custom
SPEED2 TIME TRIP AT
1.20xFLA: 795 s
Range: 0 to 65534 s in steps of 1
Only seen if CURVE STYLE is Custom
SPEED2 TIME TRIP AT
1.30xFLA: 507 s
Range: 0 to 65534 s in steps of 1
Only seen if CURVE STYLE is Custom
SPEED2 TIME TRIP AT
1.40xFLA: 365 s
Range: 0 to 65534 s in steps of 1
Only seen if CURVE STYLE is Custom
SPEED2 TIME TRIP AT
1.50xFLA: 280 s
Range: 0 to 65534 s in steps of 1
Only seen if CURVE STYLE is Custom
SPEED2 TIME TRIP AT
1.75xFLA: 170 s
Range: 0 to 65534 s in steps of 1
Only seen if CURVE STYLE is Custom
SPEED2 TIME TRIP AT
2.00xFLA: 117 s
Range: 0 to 65534 s in steps of 1
Only seen if CURVE STYLE is Custom
SPEED2 TIME TRIP AT
2.25xFLA: 86 s
Range: 0 to 65534 s in steps of 1
Only seen if CURVE STYLE is Custom
SPEED2 TIME TRIP AT
2.50xFLA: 67 s
Range: 0 to 65534 s in steps of 1
Only seen if CURVE STYLE is Custom
SPEED2 TIME TRIP AT
2.75xFLA: 53 s
Range: 0 to 65534 s in steps of 1
Only seen if CURVE STYLE is Custom
SPEED2 TIME TRIP AT
3.00xFLA: 44 s
Range: 0 to 65534 s in steps of 1
Only seen if CURVE STYLE is Custom
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S12 TWO-SPEED MOTOR
CHAPTER 5: SETPOINTS
SPEED2 TIME TRIP AT
3.25xFLA: 37 s
Range: 0 to 65534 s in steps of 1
Only seen if CURVE STYLE is Custom
SPEED2 TIME TRIP AT
3.50xFLA: 31 s
Range: 0 to 65534 s in steps of 1
Only seen if CURVE STYLE is Custom
SPEED2 TIME TRIP AT
3.75xFLA: 27 s
Range: 0 to 65534 s in steps of 1
Only seen if CURVE STYLE is Custom
SPEED2 TIME TRIP AT
4.00xFLA: 23 s
Range: 0 to 65534 s in steps of 1
Only seen if CURVE STYLE is Custom
SPEED2 TIME TRIP AT
4.25xFLA: 21 s
Range: 0 to 65534 s in steps of 1
Only seen if CURVE STYLE is Custom
SPEED2 TIME TRIP AT
4.50xFLA: 18 s
Range: 0 to 65534 s in steps of 1
Only seen if CURVE STYLE is Custom
SPEED2 TIME TRIP AT
4.75xFLA: 16 s
Range: 0 to 65534 s in steps of 1
Only seen if CURVE STYLE is Custom
SPEED2 TIME TRIP AT
5.00xFLA: 15 s
Range: 0 to 65534 s in steps of 1
Only seen if CURVE STYLE is Custom
SPEED2 TIME TRIP AT
5.50xFLA: 12 s
Range: 0 to 65534 s in steps of 1
Only seen if CURVE STYLE is Custom
SPEED2 TIME TRIP AT
6.00xFLA: 10 s
Range: 0 to 65534 s in steps of 1
Only seen if CURVE STYLE is Custom
SPEED2 TIME TRIP AT
6.50xFLA: 9 s
Range: 0 to 65534 s in steps of 1
Only seen if CURVE STYLE is Custom
SPEED2 TIME TRIP AT
7.00xFLA: 7 s
Range: 0 to 65534 s in steps of 1
Only seen if CURVE STYLE is Custom
SPEED2 TIME TRIP AT
7.50xFLA: 6 s
Range: 0 to 65534 s in steps of 1
Only seen if CURVE STYLE is Custom
SPEED2 TIME TRIP AT
8.00xFLA: 6 S
Range: 0 to 65534 s in steps of 1
Only seen if CURVE STYLE is Custom
SPEED2 TIME TRIP AT
10.0xFLA: 6 s
Range: 0 to 65534 s in steps of 1
Only seen if CURVE STYLE is Custom
SPEED2 TIME TRIP AT
15.0xFLA: 6 s
Range: 0 to 65534 s in steps of 1
Only seen if CURVE STYLE is Custom
SPEED2 TIME TRIP AT
20.0xFLA: 6 s
Range: 0 to 65534 s in steps of 1
Only seen if CURVE STYLE is Custom
The overload curve selection for Speed 2 is done identically to the selection for Speed 1 or
regular single-speed applications as described under S3 OVERLOAD PROTECTION
chapter of the manual. The function setting for Speed 1 found under S3 OVERLOAD
PROTECTION controls the response of the thermal protection under Speed 2 as well.
Note that the relay will apply individual CT primary setting, individual FLA and potentially
different curve for Speeds 1 and 2. This creates enough flexibility (degrees of freedom) to
accommodate the 2-speed applications in a natural way without an awkward
workarounds. Note that the thermal model integrates the thermal capacity continuously
when switching between the speeds and thus potentially different CT primaries, FLAs and
curves.
5–86
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
CHAPTER 5: SETPOINTS
S12 TWO-SPEED MOTOR
Note
NOTE
When two speed motor protection is selected and used for Forward/Reverse motor
rotation, it is required that switching between the speeds goes through a stage of no
current (motor slows down or stops). Then it is followed by a start in the opposite direction.
Switching in opposite direction, while motor is running is not recommended.
5.13.3 Speed 2 Undercurrent
PATH: S12 TWO-SPEED MOTOR SPEED2 UNDERCURRENT
SPEED2 UNDERCURRENT
BLOCK SPEED2 U/C
FROM START: 0 S
Range: 0 to 15000 seconds in steps of 1
SPEED2 U/C
ALARM: Off
Range: Off, Latched, Unlatched
ASSIGN SPEED2 U/C
RELAYS: Alarm
Range: None, Alarm, Aux1, Aux2, or combinations of
them
SPEED2 U/C ALARM:
LEVEL: 0.70 x FLA
Range: 0.10 to 0.99 x FLA in steps of 1
SPEED2 U/C ALARM:
DELAY: 1 s
Range: 1 to 255 seconds in steps of 1
SPEED2 U/C ALARM
EVENTS: Off
Range: On, Off
SPEED2 U/C
TRIP: Off
Range: Off, Latched, Unlatched
ASSIGN SPEED2 U/C
RELAYS: Trip
Range: None, Trip, Aux1, Aux2, or combinations of
them
SPEED2 U/C TRIP
LEVEL: 0.70 X FLA
Range: 0.10 to 0.99 x FLA in steps of 1
SPEED2 U/C TRIP
DELAY: 1 s
Range: 1 to 255 seconds in steps of 1
The SPEED2 UNDERCURRENT protection is a separate protection for Speed 2, and has
the same menu structure as the undercurrent protection for Speed 1 under S4 CURRENT
ELEMENTS/ UNDERCURRENT. This protection is enabled when the setting under S2
SYSTEM SETUP /CT/VT SETUP/ENABLE 2-SPEED MOTOR PROTECTION is
programmed as “Yes,” and the physical DIGITAL INPUTS/SPEED SWITCH =1(closed).
When in Speed 2, the 369 will detect undercurrent conditions and initiate an alarm if any
phase current drops below the SPEED2 U/C ALARM LEVEL setting for the time delay
selected under SPEED2 U/C ALARM DELAY.
A trip will be initiated if the level of any phase current drops below the SPEED2 U/C TRIP
LEVEL for the time delay selected under SPEED2 U/C TRIP DELAY time delay.
Additionally, SPEED2 UNDERCURRENT protection can be blocked during start in Speed
2, when selecting a time delay under BLOCK SPEED2 U/C FROM START. The timer starts
timing out when the motor status as detected by the 369 changes from "Stopped" to
"Starting."
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
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S12 TWO-SPEED MOTOR
CHAPTER 5: SETPOINTS
Note that a motor status of “Stopped” will also be detected by the 369 during the switching
from Speed 1 to Speed 2 if the status of the breaker is detected as “open” and the motor
current drops below 5% of SPEED2 CT primary setting.
When switching from Speed 2 to Speed 1 (Speed Switch status detected as “open”), the
SPEED2 UNDERCURRENT protection becomes inactive and the Speed 1 undercurrent
protection found under S4 CURRENT ELEMENTS / UNDERCURRENT is then used by
the 369.
5.13.4 Speed 2 Acceleration
PATH: S12 TWO-SPEED MOTOR SPEED2 ACCELERATION
SPEED2 ACCELERATION
SPEED2 ACCEL. TIMER
FROM START: 10 S
Range: 2.0 to 250.0 seconds in steps of 0.1 s
ACCEL. TIMER FROM
SPEED1 - 2: 10 s
Range: 2.0 to 250.0 seconds in steps of 0. 1 s
SPEED SW SPEED2 TIME
DELAY: 2.0 s
Range: 0.5 to 100.0 seconds in steps of 0.5 s
The timer SPEED2 ACCEL. TIMER FROM START will start timing out, when the previous
status of the motor was detected “STOPPED," the status of the Speed Switch contact is
detected close (Speed 2), or the starting current is above 5%CT setting for Speed 2.
The timer ACCEL. TIMER FROM SPEED1-2 will start timing out, when the previous
status of the motor was detected “RUNNING”, or “OVERLOAD”, and the Speed Switch
contact is detected closed (Speed 2),
The 369 relay will ignore any Mechanical Jam during the transition from Speed 1 to Speed
2, until the motor current drops below Speed 2 Overload PKP setting, or during the time of
Speed1-2 acceleration timer. At that point the Mechanical Jam feature will be enabled with
Speed 2 FLA.
When using the Two Speed Motor feature in a Forward/Reverse motor rotation application,
switching between speeds will result in a state with no current (motor slows down to a
stop) followed by a start in the opposite direction. In this application, the ACCEL. TIMER
FROM SPEED1-2 could be programmed with the same value as SPEED2 ACCEL. TIMER
FROM START.
The SPEED SW SPEED2 TIME DELAY setting is available only if the “SPEED SWITCH”
function is assigned to one of the DIGITAL INPUTS under setpoints S9 DIGITAL INPUTS.
SPEED2 ACCEL. TIMER FROM START and ACCEL. TIMER FROM SPEED1-2 become
functional only if the acceleration time at Speed 1 (see S5 section 5.6.2: Acceleration Trip) is
enabled.
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GE
Digital Energy
369 Motor Management Relay
Chapter 6: Actual Values
Actual Values
6.1
Overview
6.1.1
Actual Values Main Menu
A1 ACTUAL VALUES
STATUS
MOTOR STATUS
LAST TRIP DATA
DATA LOGGER
DIAGNOSTIC MESSAGES
START BLOCK STATUS
DIGITAL INPUT STATUS
OUTPUT RELAY STATUS
REAL TIME CLOCK
FIELDBUS SPEC STATUS
A2 ACTUAL VALUES
METERING DATA
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
CURRENT METERING
See page 6–3
See page 6–4
See page 6–4
See page 6–5
See page 6–5
See page 6–6
See page 6–7
See page 6–7
See page 6–7
See page 6–8
6–1
OVERVIEW
CHAPTER 6: ACTUAL VALUES
VOLTAGE METERING1
POWER METERING1
See page 6–9
BACKSPIN METERING
LOCAL RTD2
See page 6–10
OVERALL STATOR RTD4
DEMAND METERING
See page 6–12
MOTOR DATA
See page 6–14
LOCAL RTD MAXIMUMS
REMOTE RTD MAXIMUMS
TRIP COUNTERS
See page 6–15
See page 6–16
See page 6–16
MOTOR STATISTICS
A5 ACTUAL VALUES
EVENT RECORD
See page 6–11
See page 6–11
PHASORS
A4 ACTUAL VALUES
STATISTICAL DATA
See page 6–9
See page 6–10
REMOTE RTD3
A3 ACTUAL VALUES
LEARNED DATA
See page 6–8
EVENT: 512
See page 6–18
See page 6–18
EVENT: 511
EVENT: 2
EVENT: 1
A6 ACTUAL VALUES
RELAY INFORMATION
6–2
MODEL INFORMATION
See page 6–20
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
CHAPTER 6: ACTUAL VALUES
A1 STATUS
FIRMWARE VERSION
See page 6–20
1.Only shown if option M or B is installed
2.Only shown if option R is installed
3.Only shown if Channel 3 Application is programmmed as RRTD
4.Only shown if option R is installed or Channel 3 Application is programmmed as RRTD
6.2
A1 Status
6.2.1
Motor Status
PATH: A1 STATUS  MOTOR STATUS
MOTOR STATUS
MOTOR STATUS:
Stopped
Range: Stopped, Starting, Running, Overload, Tripped
MOTOR THERMAL
CAPACITY USED: 0%
Range: 0 to 100% in steps of 1
ESTIMATED TRIP TIME
ON OVERLOAD: Never
Range: Never, 0 to 65500 s in steps of 1
MOTOR SPEED:
Low Speed
Range: Low Speed, High Speed
Only shown if "Enable 2-Speed Motor Protection" is
enabled.
These messages describe the status of the motor at the current point in time. The Motor
Status message indicates the current state of the motor.
MOTOR STATE
DEFINITION
Stopped
phase current = 0 A and starter status input = breaker/contactor
open
Starting
motor previously stopped and phase current has gone from 0 to >
FLA
Running
FLA > phase current > 0 or starter status input = breaker/
contactor closed and motor was previously running
Overload
motor previously running and phase current now > FLA
Tripped
a trip has been issued and not cleared
The Motor Thermal Capacity Used message indicates the current level which is used by the
overload and cooling algorithms. The Estimated Trip Time On Overload is only active for
the Overload motor status.
In Forward/Reverse motor applications, MOTOR SPEED is indicated as "Low Speed" for
Forward rotation, and "High Speed" for Reverse rotation of motor.
Note
NOTE
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
6–3
A1 STATUS
6.2.2
CHAPTER 6: ACTUAL VALUES
Last Trip Data
PATH: A1 STATUS  LAST TRIP DATA
LAST TRIP DATA
CAUSE OF LAST TRIP:
No Trip to date
Range: No Trip to Date, cause of trip
LAST TRIP
TIME: 00:00:00
Range: hour: min: seconds
LAST TRIP
DATE: Feb 28 2007
Range: month day year
SPEED OF LAST TRIP:
Low Speed
Range: Not Programmed, Low Speed, High Speed
A: 0
C: 0
B: 0
A Pretrip
Range: 0 to 100000 A in steps of 1
MOTOR LOAD
Pretrip 0.00 x FLA
Range: 0.00 to 20.00 in steps of 0.01
CURRENT UNBALANCE
Pretrip: 0%
Range: 0 to 100% in steps of 1
GROUND CURRENT
Pretrip: 0.0 Amps
Range: 0.0 to 5000.0 Amps in steps of 0.1
Range: Local, RRTD1, RRTD2, RRTD3, RRTD4
HOTTEST STATOR RTD:
No RTD = open, Shorted = shorted RTD
Local RTD: 12 76°C
–40 to 200°C or –40 to 392°F
Vab: 0 Vbc: 0
Vca: 0 V Pretrip
Range: 0 to 20000 in steps of 1
Only shown if VT CONNECTION is programmed
Van: 0 Vbn: 0
Vcn: 0 V Pretrip
Range: 0 to 20000 in steps of 1
Only shown if VT CONNECTION is "Wye"
SYSTEM FREQUENCY
Pretrip: 0.00 Hz
Range: 0.00, 15.00 to 120.00 in steps of 0.01
Only shown if VT CONNECTION is programmed
0 kW 0 kVA
0 kvar Pretrip
Range: –50000 to +50000 in steps of 1
Only shown if VT CONNECTION is programmed
POWER FACTOR
Pretrip: 1.00
Range: 0.00 lag to 1 to 0.00 lead
Only shown if VT CONNECTION is programmed
Immediately prior to a trip, the 369 takes a snapshot of the metered parameters along
with the cause of trip and the date and time and stores this as pre-trip values. This allows
for ease of troubleshooting when a trip occurs. Instantaneous trips on starting (< 50 ms)
may not allow all values to be captured. These values are overwritten when the next trip
occurs. The event record shows details of the last 40 events including trips.
6.2.3
Data Logger
PATH: ACTUAL VALUE  A1 ACTUAL VALUES STATUS  DATA LOGGER
DATA LOGGER
6–4
Log Status: Running
Memory Used: 100%
Line 1 Range: Stopped, Running
Line 2 Range: 0 to 100%
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
CHAPTER 6: ACTUAL VALUES
6.2.4
A1 STATUS
Diagnostic Messages
PATH: A1 STATUS  DIAGNOSTIC MESSAGES
DIAGNOSTIC MESSAGES
No Trips or Alarms
are Active
Range: No Trips or Alarms are Active, active
alarm name and level, active trip name
Any active trips or alarms may be viewed here. If there is more than one active trip or
alarm, using the Line Up and Down keys will cycle through all the active alarm messages. If
the Line Up and Down keys are not pressed, the active messages will automatically cycle.
The current level causing the alarm is displayed along with the alarm name.
6.2.5
Start Block Status
PATH: A1 STATUS  START BLOCK STATUS
START BLOCK STATUS
OVERLOAD LOCKOUT
TIMER: None
Range: 1 to 9999 min. in steps of 1
START INHIBIT
TIMER: None
Range: 1 to 500 min. in steps of 1
STARTS/HOUR TIMERS:
0 0 0 0 0 min
Range: 1 to 60 min. in steps of 1
TIME BETWEEN STARTS
TIMER: None
Range: 1 to 500 min. in steps of 1
RESTART BLOCK TIMER:
None
Range: 1 to 50000 s in steps of 1
•
OVERLOAD LOCKOUT TIMER: Determined from the thermal model, this is the
remaining amount of time left before the thermal capacity available will be sufficient
to allow another start and the start inhibit will be removed.
•
START INHIBIT TIMER: If enabled this timer will indicate the remaining time for the
Thermal Capacity to reduce to a level to allow for a safe start according to the Start
Inhibit setpoints.
•
STARTS/HOUR TIMER: If enabled this display will indicate the number of starts within
the last hour by showing the time remaining in each. The oldest start will be on the
left. Once the time of one start reaches 0, it is no longer considered a start within the
hour and is removed from the display and any remaining starts are shifted over to the
left.
•
TIME BETWEEN STARTS TIMER: If enabled this timer will indicate the remaining time
from the last start before the start inhibit will be removed and another start may be
attempted. This time is measure from the beginning of the last motor start.
•
RESTART BLOCK TIMER: If enabled this display will reflect the amount of time since the
last motor stop before the start block will be removed and another start may be
attempted.
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
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A1 STATUS
6.2.6
CHAPTER 6: ACTUAL VALUES
Digital Input Status
PATH: A1 STATUS  DIGITAL INPUT STATUS
DIGITAL INPUT STATUS
EMERGENCY RESTART:
Open
Range: Open, Closed
Note: Programmed input name displayed
DIFFERENTIAL RELAY:
Open
Range: Open, Closed
Note: Programmed input name displayed
SPEED SWITCH:
Open
Range: Open, Closed
Note: Programmed input name displayed
RESET:
Open
Range: Open, Closed
Note: Programmed input name displayed
ACCESS:
Open
Range: Open, Closed
Note: Programmed input name displayed
SPARE:
Open
Range: Open, Closed
Note: Programmed input name displayed
The present state of the digital inputs will be displayed here.
6–6
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
CHAPTER 6: ACTUAL VALUES
6.2.7
A2 METERING DATA
Output Relay Status
PATH: A1 STATUS  OUTPUT RELAY STATUS
OUTPUT RELAY STATUS
TRIP: De–energized
Range: Energized, De–energized
ALARM: De–energized
Range: Energized, De–energized
AUX 1: De–energized
Range: Energized, De–energized
AUX 2: De–energized
Range: Energized, De–energized
The present state of the output relays will be displayed here. Energized indicates that the
NO contacts are now closed and the NC contacts are now open. De-energized indicates
that the NO contacts are now open and the NC contacts are now closed.
6.2.8
Real Time Clock
PATH: A1 STATUS  REAL TIME CLOCK
REAL TIME CLOCK
DATE: 02/28/2007
TIME: 00:00:00
Range: month/day/year, hour: minute: second
The date and time from the 369 real time clock may be viewed here.
6.2.9
FieldBus Specification Status
PATH: A1 STATUS  FIELDBUS SPEC STATUS
FIELDBUS SPEC STATUS
EXPLICIT STATUS:
Nonexistent
Range: Nonexistent, Configuring, Established,
Timed Out, Deleted
IO POLLED STATUS:
Nonexistent
Range: Nonexistent, Configuring, Established,
Timed Out, Deleted
Range: Power Off/Not Online, Online/Connected,
NETWORK STATUS:
Link Failure
Power Off/Not Online
When the device is on the non-connected bus, the NETWORK STATUS message will
continually cycle between “Power Off/Not Online” and “Online/Connected”.
Note
NOTE
6.3
A2 Metering Data
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
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A2 METERING DATA
6.3.1
CHAPTER 6: ACTUAL VALUES
Current Metering
PATH: A2 METERING DATA  CURRENT METERING
CURRENT METERING
A: 0
C: 0
B: 0
Amps
Range: 0 to 65535 A in steps of 1
AVERAGE PHASE
CURRENT: 0 Amps
Range: 0 to 65535 A in steps of 1
MOTOR LOAD:
0.00 X FLA
Range: 0.00 to 20.00 x FLA in steps of 0.01
CURRENT UNBALANCE:
0%
Range: 0 to 100% in steps of 1
U/B BIASED MOTOR
LOAD: 0.00 x FLA
Range: 0.00 to 20.00 x FLA in steps of 0.01. Only visible
if unbalance biasing is enabled in thermal
GROUND CURRENT:
0.0 Amps
Range: 0 to 6553.5 A in steps of 0.1 (for 1A/5A CT)
0.00 to 25.00 A in steps of 0.01 (for
50:0.025 A CT)
All measured current values are displayed here. Note that the unbalance level is de-rated
below FLA. See the unbalance setpoints in Section 5.4.2 Thermal Model on page 5–35 for
more details.
6.3.2
Voltage Metering
PATH: A2 METERING DATA  VOLTAGE METERING
VOLTAGE METERING
Vab: 0
Vca: 0
Vbc: 0
V RMS φ-φ
Range: 0 to 65535 V in steps of 1
Only shown if VT CONNECTION is programmed
AVERAGE LINE
VOLTAGE: 0 V
Range: 0 to 65535 V in steps of 1
Only shown if VT CONNECTION is programmed
Va: 0
Vc: 0
Range: 0 to 65535 V in steps of 1
Only shown if a Wye connection programmed
Vb: 0
V RMS φ-N
AVERAGE PHASE
VOLTAGE: 0 V
Range: 0 to 65535 V in steps of 1
Only shown if a Wye connection programmed
SYSTEM FREQUENCY:
0.00 Hz
Range: 0.00, 15.00 to 120.00 Hz in steps of 0.01
Measured voltage parameters will be displayed here. These displays are only visible if
option M or B has been installed.
6–8
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
CHAPTER 6: ACTUAL VALUES
6.3.3
A2 METERING DATA
Power Metering
PATH: A2 METERING DATA  POWER METERING
POWER METERING
POWER FACTOR:
1.00
Range: 0.00 to 1.00 lag or lead
REAL POWER:
0 kW
Range: –32000 to 32000 kW in steps of 1
REAL POWER:
0 hp
Range: 0 to 42912 hp in steps of 1
REACTIVE POWER:
0 kvar
Range: –32000 to 32000 kvar in steps of 1
APPARENT POWER:
0 kVA
Range: 0 to 65000 kVA in steps of 1
POSITIVE WATTHOURS:
0 MWh
Range: 0.000 to 65535.999 MWh or 0 to 65535999
kWh in steps of 1
POSITIVE VARHOURS:
0 Mvarh
Range: 0.000 to 65535.999 Mvarh or 0 to 65535999
kvarh in steps of 1
NEGATIVE VARHOURS:
0 Mvarh
Range: 0.000 to 65535.999 Mvarh or 0 to 65535999
kvarh in steps of 1
These actual values are only shown if the VT CONNECTION TYPE setpoint has been
programmed (i.e., is not set to “None”). The values for three phase power metering,
consumption and generation are displayed here. The energy values displayed here will be
in units of MWh/Mvarh or kWh/kvarh, depending on the S1 369 SETUP  DISPLAY
PREFERENCES  ENERGY UNIT DISPLAY setpoint. The energy registers will roll over
to zero and continue accumulating once their respective maximums have been reached.
The MWh/Mvarh registers will continue accumulating after their corresponding kWh/kvarh
registers have rolled over.
These displays are only visible if option M or B has been installed.
6.3.4
Backspin Metering
PATH: A2 METERING DATA  BACKSPIN METERING
BACKSPIN METERING
BACKSPIN FREQUENCY:
Low Signal
Range: Low Signal, 1 to 120 Hz in steps of 0.01
Only shown if option B installed and enabled.
BACKSPIN DETECTION
STATE:
Range: Motor Running, No Backspin, Slowdown,
Acceleration, Backspinning, Prediction, Soon to
Restart. Seen only if Backspin Start Inhibit is
enabled
BACKSPIN PREDICTION
TIMER:30 s
Range: 0 to 50000 s in steps of 1.
Shown only if Backspin Start Inhibit is enabled
and prediction timer is enabled.
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A2 METERING DATA
CHAPTER 6: ACTUAL VALUES
Backspin metering parameters are displayed here. These values are shown if option B has
been installed and the ENABLE BACKSPIN START INHIBIT setting is “Yes”.
6.3.5
Local RTD
PATH: A2 METERING DATA  LOCAL RTD
LOCAL RTD
HOTTEST STATOR RTD
NUMBER: 1
Range: None, 1 to 12 in steps of 1
HOTTEST STATOR RTD
TEMPERATURE: 40°C
Range: –40 to 200°C or –40 to 392°F
No RTD = open, Shorted = shorted RTD
RTD #1
TEMPERATURE: 40°C
Range: –40 to 200°C or –40 to 392°F
No RTD = open, Shorted = shorted RTD
RTD #2
TEMPERATURE: 40°C
Range: –40 to 200°C or –40 to 392°F
No RTD = open, Shorted = shorted RTD
RTD #12
TEMPERATURE: 40°C
Range: –40 to 200°C or –40 to 392°F
No RTD = open, Shorted = shorted RTD
The temperature level of all 12 internal RTDs are displayed here if the 369 has option R
enabled. The programmed name of each RTD (if changed from the default) appears as the
first line of each message. These displays are only visible if option R has been installed.
6.3.6
Remote RTD
PATH: A2 METERING DATA  REMOTE RTD  REMOTE RTD MODULE 1(4)
REMOTE RTD MODULE 1
MOD 1 HOTTEST STATOR Range: None, 1 to 12 in steps of 1
NUMBER: 0
MOD 1 HOTTEST STATOR Range: –40 to 200°C or –40 to 392°F
No RTD = open, Shorted = shorted RTD
TEMPERATURE: 40°C
RRTD 1 RTD #1
TEMPERATURE: 40°C
Range: –40 to 200°C or –40 to 392°F
No RTD = open, Shorted = shorted RTD
RRTD 1 RTD #2
TEMPERATURE: 40°C
Range: –40 to 200°C or –40 to 392°F
No RTD = open, Shorted = shorted RTD
RRTD 1 RTD #12
TEMPERATURE: 40°C
Range: –40 to 200°C or –40 to 392°F
No RTD = open, Shorted = shorted RTD
The temperature level of all 12 remote RTDs will be displayed here if programmed and
connected to a RRTD module. The name of each RRTD (if changed from the default) will
appear as the first line of each message. These displays are only visible if option R has
been installed.
If communications with the RRTD module is lost, the RRTD MODULE
COMMUNICATIONS LOST message will be displayed.
6–10
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
CHAPTER 6: ACTUAL VALUES
6.3.7
A2 METERING DATA
Overall Stator RTD
PATH: A2 METERING DATA  OVERALL STATOR RTD
OVERALL STATOR RTD
6.3.8
HOTTEST OVERALL
STATOR TEMP: 70°C
Range: –40 to 200°C or –40 to 392°F
No RTD = open, Shorted = shorted RTD
HOTTEST STATOR RTD:
Local 369 RTD#: 4
Range: No RTD, Local 369, RRTD#1 to RRTD#4 (for RTD
Name), 1 to 12 in steps of 1 (for RTD #)
Demand Metering
PATH: A2 METERING DATA  DEMAND METERING
DEMAND METERING
CURRENT
DEMAND: 0 Amps
Range: 0 to 65535 A in steps of 1
REAL POWER
DEMAND: 0 kW
Range: 0 to 32000 kW in steps of 1
Only shown if VT CONNECTION programmed
REACTIVE POWER
DEMAND: 0 kvar
Range: 0 to 32000 kvar in steps of 1
Only shown if VT CONNECTION programmed
APPARENT POWER
DEMAND: 0 kVA
Range: 0 to 65000 kVA in steps of 1
Only shown if VT CONNECTION programmed
PEAK CURRENT
DEMAND: 0 Amps
Range: 0 to 65535 A in steps of 1
PEAK REAL POWER
DEMAND: 0 kW
Range: 0 to 32000 kW in steps of 1
Only shown if VT CONNECTION programmed
PEAK REACTIVE POWER
DEMAND: 0 kvar
Range: 0 to 32000 kvar in steps of 1
Only shown if VT CONNECTION programmed
PEAK APPARENT POWER
DEMAND: 0 kVA
Range: 0 to 65000 kVA in steps of 1
Only shown if VT CONNECTION programmed
The values for current and power demand are displayed here. Peak demand information
can be cleared using the CLEAR PEAK DEMAND command located in
S1 369 SETUP  CLEAR/PRESET DATA . Demand is only shown for positive real (kW) and
reactive (kvar) powers. Only the current demand will be visible if options M or B are not
installed.
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
6–11
A2 METERING DATA
6.3.9
CHAPTER 6: ACTUAL VALUES
Phasors
PATH: A2 METERING DATA  PHASORS
PHASORS
Ia PHASOR:
0 Degrees Lag
Range: 0 to 359 degrees in steps of 1
Ib PHASOR:
0 Degrees Lag
Range: 0 to 359 degrees in steps of 1
Ic PHASOR:
0 Degrees Lag
Range: 0 to 359 degrees in steps of 1
Range: 0 to 359 degrees in steps of 1
Only shown if VT CONNECTION is programmed
Van if WYE connection, Vab if Open Delta Connection
Vax PHASOR:
0 Degrees Lag
Vbx PHASOR:
0 Degrees Lag
Range: 0 to 359 degrees in steps of 1
Only shown if VT CONNECTION is programmed
Vbn if WYE connection, Vbc if Open Delta Connection
Vcx PHASOR:
0 Degrees Lag
Range: 0 to 359 degrees in steps of 1
Only shown if VT CONNECTION is programmed
Vcn if WYE connection, Vca if Open Delta Connection
All angles shown are with respect to the reference phasor. The reference phasor is based
on the VT connection type. In the event that option M has not been installed, Van for Wye is
0 V, or Vab for Delta is 0 V, Ia will be used as the reference phasor
.
Reference Phasor
VT Connection Type
Ia
None
Van
Wye
Vab
Delta
Note that the phasor display is not intended to be used as a protective metering element.
Its prime purpose is to diagnose errors in wiring connections.
To aid in wiring, the following tables can be used to determine if VTs and CTs are on the
correct phase and their polarity is correct. Problems arising from incorrect wiring are
extremely high unbalance levels (CTs), erroneous power readings (CTs and VTs), or phase
reversal trips (VTs). To correct wiring, simply start the motor and record the phasors. Using
the following tables along with the recorded phasors, system rotation, VT connection type,
and motor power factor, the correct phasors can be determined. Note that Va (Vab if delta)
is always assumed to be 0° and is the reference for all angle measurements.
Common problems include:
6–12
Phase currents 180° from proper location (CT polarity
reversed)
Phase currents or voltages 120° or 240° out (CT/VT on
wrong phase.)
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
CHAPTER 6: ACTUAL VALUES
A3 LEARNED DATA
Table 6–1: Three Phase Wye VT Connection
ABC
ROTATION
Van
Vbn
Vcn
Ia
Ib
Ic
KW
kVar
kVA
72.5°
= 0.3 PF LAG
0
120
240
72.5
192.5
312.5
+
+
+
45°
= 0.7 PF LAG
0
120
240
45
165
285
+
+
+
0°
= 1.00 PF
0
120
240
0
120
240
+
0
+ (= kW)
–45°
= 0.7 PF LEAD
0
120
240
315
75
195
+
–
+
–72.5°
= 0.2 PF LEAD
0
120
240
287.5
47.5
167.5
+
–
+
ACB
ROTATION
Van
Vbn
Vcn
Ia
Ib
Ic
kW
kvar
kVA
72.5°
= 0.3 PF LAG
0
240
120
72.5
312.5
192.5
+
+
+
45°
= 0.7 PF LAG
0
240
120
45
285
165
+
+
+
0°
= 1.00 PF
0
240
120
0
240
120
+
0
+ (= kW)
–45°
= 0.7 PF LEAD
0
240
120
315
195
75
+
–
+
–72.5°
= 0.2 PF LEAD
0
240
120
287.5
167.5
47.5
+
–
+
ABC
ROTATION
Vab
Vbc
Vca
Ia
Ib
Ic
kW
kvar
kVA
72.5°
= 0.3 PF LAG
0
120
240
102.5
222.5
342.5
+
+
+
45°
= 0.7 PF LAG
0
120
240
75
195
315
+
+
+
0°
= 1.00 PF
0
120
240
30
150
270
+
0
+ (= kW)
–45°
= 0.7 PF LEAD
0
120
240
345
105
225
+
–
+
–72.5°
= 0.3 PF LEAD
0
120
240
317.5
77.5
197.5
+
–
+
ACB
ROTATION
Vab
Vbc
Vca
Ia
Ib
Ic
kW
kvar
kVA
72.5°
= 0.3 PF LAG
0
240
120
42.5
282.5
162.5
+
+
+
45°
= 0.7 PF LAG
0
240
120
15
255
135
+
+
+
0°
= 1.00 PF
0
240
120
330
210
90
+
0
+ (= kW)
–45°
= 0.7 PF LEAD
0
240
120
285
165
45
+
–
+
–72.5°
= 0.3 PF LEAD
0
240
120
257.5
137.5
17.5
+
–
+
Table 6–2: Three Phase Open Delta VT Connection
6.4
A3 Learned Data
6.4.1
Description
This page contains the data the 369 learns to adapt itself to the motor protected.
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
6–13
A3 LEARNED DATA
6.4.2
CHAPTER 6: ACTUAL VALUES
Motor Data
PATH: A3 LEARNED DATA  MOTOR DATA
MOTOR DATA
LEARNED ACCELERATION
TIME: 0.0 s
Range: 1.0 to 250.0 s in steps of 0.1
LEARNED STARTING
CURRENT: 0 A
Range: 0 to 100000 A in steps of 1
LEARNED STARTING
CAPACITY: 85%
Range: 0 to 100% in steps of 1
LEARNED RUNNING COOL
TIME CONST.: 0 min
Range: 0 to 500 min in steps of 1
LEARNED STOPPED COOL
TIME CONST.: 0 min
Range: 0 to 500 min in steps of 1
LAST STARTING
CURRENT: 0 A
Range: 0 to 100000 A in steps of 1
LAST STARTING
CAPACITY: 85%
Range: 0 to 100% in steps of 1%
LAST ACCELERATION
TIME: 0.0 s
Range: 1.0 to 250.0 s in steps of 0.1
AVERAGE MOTOR LOAD
LEARNED: 0.00 X FLA
Range: 0.00 to 20.00 x FLA in steps of 0.01
LEARNED UNBALANCE k
FACTOR: 0
Range: 0 to 29 in steps of 1
AVG. RUN TIME AFTER
START: 14 hours,22 min
Range: 65535 days, 1440 minutes
DATE OF RECORD
Feb 14 2007
Range: month/day/year
Range: 0 to 65535
NUMBER OF RECORDS
250
The learned values for acceleration time and starting current are the average of the
individual values acquired for the last five successful starts. The value for starting current is
used when learned k factor is enabled.
The learned value for starting capacity is the amount of thermal capacity required for a
start determined by the 369 from the last five successful motor starts. The last five learned
start capacities are averaged and a 25% safety margin factored in. This guarantees
enough thermal capacity available to start the motor. The Start Inhibit feature, when
enabled, uses this value in determining lockout time.
The learned cool time constants and unbalance k factor are displayed here. The learned
value is the average of the last five measured constants. These learned cool time
constants are used only when the ENABLE LEARNED COOL TIMES thermal model
setpoint is "Yes". The learned unbalance k factor is the average of the last five calculated k
factors. The learned k factor is only used when unbalance biasing of thermal capacity is
set on and to learned.
6–14
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
CHAPTER 6: ACTUAL VALUES
A3 LEARNED DATA
Note that learned values are calculated even when features requiring them are turned off.
The learned features should not be used until at least five successful motor starts and
stops have occurred.
Starting capacity, starting current, and acceleration time values are displayed for the last
start. The average motor load while running is also displayed here. The motor load is
averaged over a 15 minute sliding window.
Clearing motor data (see Section 5.2.10: Clear/Preset Data on page –14) resets these
values to their default settings.
6.4.3
Local RTD Maximums
PATH: A3 LEARNED DATA  LOCAL RTD MAXIMUMS
LOCAL RTD MAXIMUMS
RTD #1 MAXIMUM
TEMPERATURE: 40°C
Range: –40 to 200°C or –40 to 392°F
No RTD = open, Shorted = shorted RTD
RTD #2 MAXIMUM
TEMPERATURE: 40°C
Range: –40 to 200°C or –40 to 392°F
No RTD = open, Shorted = shorted RTD
RTD #3 MAXIMUM
TEMPERATURE: 40°C
Range: –40 to 200°C or –40 to 392°F
No RTD = open, Shorted = shorted RTD
RTD #12 MAXIMUM
TEMPERATURE: 40°C
Range: –40 to 200°C or –40 to 392°F
No RTD = open, Shorted = shorted RTD
The maximum temperature level of all 12 internal RTDs will be displayed here if the 369 has
option R enabled. The programmed name of each RTD (if changed from the default) will
appear as the first line of each message.
These displays are only visible if option R has been installed and RTDs have been
programmed.
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
6–15
A4 STATISTICAL DATA
6.4.4
CHAPTER 6: ACTUAL VALUES
Remote RTD Maximums
PATH: A3 LEARNED DATA  REMOTE RTD MAXIMUMS  RRTD #1(4)
RRTD #1
RTD #1 MAXIMUM
TEMPERATURE: 40°C
Range: –40 to 200°C or –40 to 392°F
No RTD = open, Shorted = shorted RTD
RTD #2 MAXIMUM
TEMPERATURE: 40°C
Range: –40 to 200°C or –40 to 392°F
No RTD = open, Shorted = shorted RTD
RTD #3 MAXIMUM
TEMPERATURE: 40°C
Range: –40 to 200°C or –40 to 392°F
No RTD = open, Shorted = shorted RTD
RTD #12 MAXIMUM
TEMPERATURE: 40°C
Range: –40 to 200°C or –40 to 392°F
No RTD = open, Shorted = shorted RTD
The maximum temperature level of the 12 remote RTDs for each RRTD will be displayed
here if the 369 has been programmed and connected to a RRTD module. The programmed
name of each RTD (if changed from the default) will appear as the first line of each
message. If an RRTD module is connected and no RRTDs are programmed, the display
reads NO RRTDS PROGRAMMED when an attempt is made to enter this actual values
page.
6.5
A4 Statistical Data
6.5.1
Trip Counters
PATH: A4 STATISTICAL DATA  TRIP COUNTERS
TRIP COUNTERS
6–16
TOTAL NUMBER OF
TRIPS: 0
Range: 0 to 50000 in steps of 1
INCOMPLETE SEQUENCE
TRIPS: 0
Range: 0 to 50000 in steps of 1
SWITCH
TRIPS: 0
Range: 0 to 50000 in steps of 1
OVERLOAD
TRIPS: 0
Range: 0 to 50000 in steps of 1
SHORT CIRCUIT
TRIPS: 0
Range: 0 to 50000 in steps of 1
MECHANICAL JAM
TRIPS: 0
Range: 0 to 50000 in steps of 1
UNDERCURRENT
TRIPS: 0
Range: 0 to 50000 in steps of 1
CURRENT UNBALANCE
TRIPS: 0
Range: 0 to 50000 in steps of 1
SINGLE PHASE
TRIPS: 0
Range: 0 to 50000 in steps of 1
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
CHAPTER 6: ACTUAL VALUES
A4 STATISTICAL DATA
GROUND FAULT
TRIPS: 0
Range: 0 to 50000 in steps of 1
ACCELERATION
TRIPS: 0
Range: 0 to 50000 in steps of 1
STATOR RTD
TRIPS1: 0
Range: 0 to 50000 in steps of 1
BEARING RTD
TRIPS1: 0
Range: 0 to 50000 in steps of 1
OTHER RTD
TRIPS1: 0
Range: 0 to 50000 in steps of 1
AMBIENT RTD
TRIPS1: 0
Range: 0 to 50000 in steps of 1
UNDERVOLTAGE
TRIPS2: 0
Range: 0 to 50000 in steps of 1
OVERVOLTAGE
TRIPS2: 0
Range: 0 to 50000 in steps of 1
PHASE REVERSAL
TRIPS: 0
Range: 0 to 50000 in steps of 1
UNDERFREQUENCY
TRIPS: 0
Range: 0 to 50000 in steps of 1
OVERFREQUENCY
TRIPS: 0
Range: 0 to 50000 in steps of 1
LEAD POWER FACTOR
TRIPS3: 0
Range: 0 to 50000 in steps of 1
LAG POWER FACTOR
TRIPS3: 0
Range: 0 to 50000 in steps of 1
POSITIVE REACTIVE
TRIPS3: 0
Range: 0 to 50000 in steps of 1
NEGATIVE REACTIVE
TRIPS3: 0
Range: 0 to 50000 in steps of 1
UNDERPOWER
TRIPS3: 0
Range: 0 to 50000 in steps of 1
REVERSE POWER
TRIPS3: 0
Range: 0 to 50000 in steps of 1
TRIP COUNTERS LAST
CLEARED: 02/28/2007
Range: 0 to 50000 in steps of 1
1.Only shown if option R installed or Channel 3 Application is programmed as RRTD
2.Only shown if option M or B are installed
3.Only shown if option M or B are installed and VT CONNECTION is programmed
The number of trips by type is displayed here. When the total reaches 50000, the counter
resets to 0 on the next trip and continues counting. This information can be cleared with
the setpoints in the CLEAR/PRESET DATA section of setpoints page one. The date the
counters are cleared will be recorded.
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
6–17
A5 EVENT RECORD
6.5.2
CHAPTER 6: ACTUAL VALUES
Motor Statistics
PATH: A4 STATISTICAL DATA  MOTOR STATISTICS
MOTOR STATISTICS
NUMBER OF MOTOR
STARTS: 0
Range: 0 to 50000 in steps of 1
NUMBER OF EMERGENCY
RESTARTS: 0
Range: 0 to 50000 in steps of 1
MOTOR RUNNING HOURS:
0 hrs
Range: 0 to 100000 in steps of 1
AUTORESTART START
ATTEMPTS: 0
Range: 0 to 50000 in steps of 1
TIME TO AUTORESTART:
0
Range: 0 to 50000 in steps of 1
COUNTER:
0 Units
Range: 0 to 65535 Units in steps of 1
Shown if Counter set to a digital input
NUMBER OF MOTOR STARTS, and NUMBER OF EMERGENCY RESTARTS values
display the number of motor starts and emergency restarts respectively. This information
is useful for troubleshooting a motor failure or in understanding the history and use of a
motor for maintenance purposes. When any of these counters reaches 50000, they are
automatically reset to 0.
The MOTOR RUNNING HOURS indicates the elapsed time since the 369 determined the
motor to be in a running state (current applied and/or starter status indicating contactor/
breaker closed). The NUMBER OF MOTOR STARTS, NUMBER OF EMERGENCY
RESTARTS, and MOTOR RUNNING HOURS counters can be cleared with the S1 369
SETUP  CLEAR/PRESET DATA  CLEAR MOTOR DATA setpoint.
6.6
A5 Event Record
6.6.1
Event Records
PATH: A5 EVENT RECORD  EVENT 01
EVENT 01
TIME OF EVENT 01
00:00:00:00
Time: hours / minutes / seconds / hundreds of
seconds
DATE OF EVENT 01
Feb. 28, 2007
Date:
MOTOR SPEED DURING
EVENT: High Speed
Range: Not Programmed, Low Speed, High Speed
A: 0
C: 0
B: 0
A
E:
MOTOR LOAD
0.00 X FLA
6–18
month / day / year
Range: 0 to 65535 A in steps of 1
01
Range: 0.00 to 20.00 x FLA in steps of 0.01
E:
01
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
CHAPTER 6: ACTUAL VALUES
A5 EVENT RECORD
CURRENT UNBALANCE:
0%
E:
01
Range: 0 to 100% in steps of 1
GROUND CURRENT:
0.0 Amps E:
Range: 0.0 to 5000.0 A steps of 0.1 (1A/5A CT)
0.00 to 25.00 A steps of 0.01 (50: 0.025 A CT)
01
HOTTEST STATOR RTD:
Local RTD: 12 76°C
Range: Local, RRTD1, RRTD2, RRTD3, RRTD4
No RTD = open, Shorted = shorted RTD
–40 to 200°C or –40 to 392°F
Vab:
Vca:
0 Vbc: 0
0 V
E:
01
Range: 0 to 20000 V in steps of 1
Only shown if VT CONNECTION is "Delta"
Van:
Vcn:
0 Vbn: 0
0 V
E:
01
Range: 0 to 20000 V in steps of 1
Only shown if VT CONNECTION is "Wye"
SYSTEM FREQUENCY:
0.00 Hz
E:
01
0 kW
0 kvar
0 kVA
E:
01
POWER FACTOR:
1.00
E:
01
Range: 0.00, 15.00 to 120 Hz in steps of 1
Only shown if VT CONNECTION is programmed
Range: –50000 to +50000 in steps of 1
Only shown if VT CONNECTION is programmed
Range: 0.00 lag to 1 to 0.00 lead
Only shown if VT CONNECTION is programmed
A breakdown of the last 512 events is available here along with the cause of the event and
the date and time. All trips automatically trigger an event. Alarms only trigger an event if
turned on for that alarm. Loss or application of control power, service alarm and
emergency restart opening and closing also triggers an event. After 512 events have been
recorded, the oldest one is removed when a new one is added. The event record may be
cleared in the setpoints page 1, clear/preset data, clear event record section.
Note
NOTE
Note
NOTE
Log of events “Diagnostic Message 1” through “Diagnostic Message 3” indicates that the
369 relay has encountered an internal software error during the processing and has
recovered by resetting the relay. It is not required to replace the relay. However, if these
messages are seen frequently, please contact GE Digital Energy Technical Support team.
Log of events “Diagnostic Message 4” through “Diagnostic Message 8” indicates that the
369 relay has detected a hardware error. It is recommended to replace the relay. Please
contact GE Digital Energy Technical Support team.
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
6–19
A5 EVENT RECORD
CHAPTER 6: ACTUAL VALUES
0.1A6 RELAY INFORMATION6.6.2Model Information
PATH: A6 RELAY INFORMATION  MODEL INFORMATION
MODEL INFORMATION
SERIAL NUMBER:
MXXXXXXXX
Range: See Autolabel for details
INSTALLED OPTIONS:
369-HI-R-M-0-P1-0-E
Range: HI/LO, R/0, M/B/0, F/0, P/P1/E/D/0, H/0, E/0
MANUFACTURE
DATE: Feb. 28 2007
Range: month/day/year
LAST CALIBRATION
DATE: Feb. 28 2007
Range: month/day/year
The relay model and manufacturing information may be viewed here. The last calibration
date is the date the relay was last calibrated at GE Digital Energy.
6.6.3
Firmware Version
PATH: A6 RELAY INFORMATION  FIRMWARE VERSION
FIRMWARE VERSION
FIRMWARE REVISION:
320
BUILD DATE & TIME:
Mar 18, 2008 15:39:40
BOOT REVISION:
100
FIELDBUS CARD SW
REVISION: 112
Note: Only shown with the Profibus (P or P1),
Modbus/TCP (E), and DeviceNet (D) options.
This information reflects the revisions of the software currently running in the 369 Relay.
This information should be noted and recorded before calling for technical support or
service.
6–20
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
GE
Digital Energy
369 Motor Management Relay
Chapter 7: Applications
Applications
7.1
269-369 Comparison
7.1.1
369 and 269plus Comparison
Table 7–1: Comparison Between 369 Relay and 269plus
369
269Plus
All options can be turned on or added in
the field
Must be returned for option change or
add other devices
Current and optional voltage inputs are
included on all relays
Current inputs only. Must use additional
meter device to obtain voltage and power
measurements.
Optional 12 RTDs with an additional 12
RTDs available with the RRTD. All RTDs are
individually configured
(100P, 100N, 120N, 10C)
10 RTDs not programmable, must be
specified at time of order.
Fully programmable digital inputs
No programmable digital inputs
4 programmable analog outputs
assignable to 33 parameters
1 Analog output programmable for 5
parameters
1 RS232 (19.2K baud), 3 RS485 (1200 TO
19.2K baud programmable)
communication ports. Also Optional
profibus port and optional fiber optics
port
1 RS485 Communication port (2400 baud
maximum)
Flash memory firmware upgrade thru PC
software and comm port
EPROM must be replaced to change
firmware
EVENT RECORDER: time and date stamp
last 512 events. Records all trips and
selectable alarms
Displays cause of last trip and last event
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
7–1
369 FAQS
CHAPTER 7: APPLICATIONS
Table 7–1: Comparison Between 369 Relay and 269plus
7.2
369
269Plus
OSCILLOGRAPHY: up to 64 cycles at 16
samples/cycle for last event(s)
N/A
Programmable text message(s)
N/A
Backspin frequency detection and
backspin timer
Backspin timer
Starter failure indication
N/A
Measures up to 20 x CT at 16 samples/
cycle
Measures up to 12 x CT at 12 samples/
cycle
15 standard overload curves
8 standard overload curves
Remote display is standard
Remote display with mod
369 FAQs
7.2.1
Frequently Asked Questions (FAQs)
1.
What is the difference between Firmware and Software?
Firmware is the program running inside the relay, which is responsible for all
relay protection and control elements. Software is the program running on the
PC, which is used to communicate with the relay and provide relay control
remotely in a user friendly format.
2.
How can I obtain copies of the latest manual and PC software?
Via the GE Digital Energy website at http://www.gedigitalenergy.com
3.
Cannot communicate through the front port (RS232).
Check the following settings:
4.
•
Communication Port (COM1, COM2, COM3 etc.) on PC or PLC
•
Parity settings must match between the relay and the master (PC or PLC)
•
Baud rate setting on the master (PC or PLC) must match RS232 baud
rate on the 369 relay.
•
Cable has to be a straight through cable, do not use null modem cables
where pin 2 and 3 are transposed
•
Check the pin outs of RS232 cable (TX - pin 2, RX - pin 3, GND - pin 5)
Cannot communicate with RS485.
Check the following settings:
7–2
•
Communication Port (COM1, COM2, COM3 etc.) on PC or PLC
•
Parity settings must match between the relay and the master (PC or PLC)
•
Baud rate must match between the relay and the master
•
Slave address polled must match between the relay and the master
•
Is terminating filter circuit present?
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
CHAPTER 7: APPLICATIONS
369 FAQS
•
Are you communicating in half duplex? (369 communicates in half
duplex mode only)
•
Is wiring correct? (“+” wire should go to “+” terminal of the relay, and “–”
goes to “–” terminal)
•
Is the RS485 cable shield grounded? (shielding diminishes noise from
external EM radiation)
Check the appropriate communication port LED on the relay. The LED should
be solidly lit when communicating properly. The LED will blink on and off when
the relay has communication difficulties and the LED will be off if no activity
detected on communication lines.
5.
Can the 4 wire RS485 (full duplex) be used with 369?
No, the 369 communicates in 2-wire half duplex mode only. However, there
are commercial RS485 converters that will convert a 4 wire to a 2 wire system.
6.
Cannot store setpoint into the relay.
Check and ensure the ACCESS switch is shorted, and check for any PASSCODE
restrictions.
7.
The 369 relay displays incorrect power reading, yet the power system is
balanced. What could be the possible reasons?
It is highly possible that the secondary wiring to the relay is not correct.
Incorrect power can be read when any of the A, B, or C phases are swapped, a
CT or VT is wired backwards, or the relay is programmed as ABC sequence
when the power system is actually ACB and vice versa. The easiest way to
verify is to check the voltage and the current phasor readings on the 369 relay
and ensure that each respective voltage and current angles match.
8.
What are the merits of a residual ground fault connection versus a core
balance connection?
The use of a zero sequence (core balance) CT to detect ground current is
recommended over the G/F residual connection. This is especially true at
motor starting. During across-the-line starting of large motors, care must be
taken to prevent the high inrush current from operating the ground element
of the 369. This is especially true when using the residual connection of 2 or 3
CTs.
In a residual connection, the unequal saturation of the current transformers,
size and location of motor, size of power system, resistance in the power
system from the source to the motor, type of iron used in the motor core &
saturation density, and residual flux levels may all contribute to the
production of a false residual current in the secondary or relay circuit. The
common practice in medium and high voltage systems is to use low
resistance grounding. By using the “doughnut CT” scheme, such systems offer
the advantages of speed and reliability without much concern for starting
current, fault contribution by the motor, or false residual current.
When a zero sequence CT is used, a voltage is generated in the secondary
winding only when zero sequence current is flowing in the primary leads.
Since virtually all motors have their neutrals ungrounded, no zero sequence
current can flow in the motor leads unless there is a ground fault on the motor
side.
9.
Can I use an 86 lockout on the 369?
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369 FAQS
CHAPTER 7: APPLICATIONS
Yes, but if an external 86 lockout device is used and connected to the 369,
ensure the 369 is reset prior to attempting to reset the lockout switch. If the
369 is still tripped, it will immediately re-trip the lockout switch. Also, if the
lockout switch is held reset, the high current draw of the switch coil may
cause damage to itself and/or the 369 output relay.
10. Can I assign more than one output relay to be blocked when using Start
Inhibits?
Yes, but keep in mind that if two output relays are wired in series to inhibit a
start it is possible that another element could be programmed to control one
or both of the relays. If this is happening and the other element is
programmed with a longer delay time, this will make it seem as if the Start
Inhibit is not working properly when in fact, it is.
11. Can I name a digital input?
Yes. By configuring the digital input as "General" a menu will appear that will
allow naming.
12. Can I apply an external voltage to the digital inputs on the 369?
No. The 369 uses an internal voltage to operate the digital inputs. Applying an
external voltage may cause damage to the internal circuitry.
13. Can I upload setpoint files from previous versions to the latest version of
firmware?
Yes, with the exception of setpoint files from versions 1.10 and 1.12.
Unfortunately these setpoint files must be rewritten, as they are not
compatible.
14. What method does the 369 use to calculate current unbalance?
The 369 uses the NEMA method. Previous revisions of the 369 manual have
incorrectly included a functional test that measured the ratio of negative
sequence current to positive sequence current. The NEMA method is as
follows:
I max – I avg
If Iavg ≥ IFLA , then Unbalance = -------------------------- × 100
I avg
where:Iavg = average phase current
Imax = current in a phase with maximum derivation from Iavg
IFLA = motor full load amps setting
I max – I avg
If Iavg < IFLA , then Unbalance = -------------------------- × 100
I FLA
To prevent nuisance trips/alarms on lightly loaded motors when a much
larger unbalance level will not damage the rotor, the unbalance protection will
automatically be defeated if the average motor current is less than 30% of the
full load current (IFLA) setting.
15. I need to update the options for my 369/RRTD in the field, can I do this?
Yes. All options of the 369/RRTD can be turned on or added in the field. To do
this contact the factory.
16. Can I test my output relays?
Yes, but keep in mind that the output relays cannot be forced into a different
state while the motor is running.
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369 DO’S AND DONT’S
17. Is the communication interface for Profibus RS232 or RS485?
It is RS485. The 9-pin connector on the rear of the 369 is the connector used
by the manufacturer of the Profibus card and although it is a DB-9, the
electrical interface is RS485.
18. Can I use the options enabler code to upgrade my 369 in the field to get the
Profibus option?
Yes, but keep in mind that there is a Profibus card that is required and is not
installed in units that were not ordered from the factory with the Profibus
option.
19. Can the 369 be used as a remote unit, similar to the 269 remote?
Yes. Every 369 can be used as remote. When ordering the 369, an external 15
foot cable must be ordered.
20. Can the RRTD module be used as a standalone unit?
Yes. The RRTD unit with the IO option, has 4 output relays, 6 digital inputs and
4 analog outputs. With this option the RRTD can provide temperature
protection.
21. Why is there a filter ground and a safety ground connection? Why are they
separate?
The safety ground ensures operator safety with regards to hazardous shocks;
the filter ground protects the internal electronic circuitry from transient noise.
These two grounds are separated for hi-pot (dielectric strength) testing
purposes. Both grounds should be tied to the ground bus external to the relay.
22. 369 doesn't communicate with ethernet after change in IP address, what
should I do?
Cycle the power supply to the 369. In order to make the new IP address active
the power supply of the 369 must be recycled after changing or setting the IP
address of the relay.
7.3
369 Do’s and Dont’s
7.3.1
Do’s and Dont’s
Do’s
Always check the power supply rating before applying power to the relay
Applying voltage greater than the maximum rating to the power supply (e.g.
120 V AC to the low-voltage rated power supply) could result in component
damage to the relay's power supply. This will result in the unit no longer being able
to power up.
Ensure that the 369 nominal phase current of 1 A or 5 A matches the secondary rating
and the connections of the connected CTs
Unmatched CTs may result in equipment damage or inadequate protection.
Ensure that the source CT and VT polarity match the relay CT and VT polarity
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Polarity of the Phase CTs is critical for power measurement, and residual ground
current detection (if used). Polarity of the VTs is critical for correct power
measurement and voltage phase reversal operation.
Properly ground the 369
Connect both the Filter Ground (terminal 123) and Safety Ground (terminal 126) of
the 369 directly to the main GROUND BUS. The benefits of proper grounding of the
369 are numerous, e.g,
•
Elimination of nuisance tripping
•
Elimination of internal hardware failures
•
Reliable operation of the relay
•
Higher MTBF (Mean Time Between Failures)
•
It is recommended that a tinned copper braided shielding and bonding
cable be used. A Belden 8660 cable or equivalent should be used as a
minimum to connect the relay directly to the ground bus.
Grounding of Phase and Ground CTs
All Phase and Ground CTs must be grounded. The potential difference between the
CT's ground and the ground bus should be minimal (ideally zero).
It is highly recommended that the two CT leads be twisted together to minimize
noise pickup, especially when the highly sensitive 50:0.025 Ground CT sensor is
used.
RTDs
Consult the application notes of the 369 Instruction Manual for the full description
of the 369 RTD circuitry and the different RTD wiring schemes acceptable for
proper operation. However, for best results the following recommendations should
be adhered to:
1.
Use a 3 wire twisted, shielded cable to connect the RTDs from the motor to the
369. The shields should be connected to the proper terminals on the back of
the 369.
2.
RTD shields are internally connected to the 369 ground (terminal #126) and
must not be grounded anywhere else.
3.
RTD signals can be characterized as very small, sensitive signals. Therefore,
cables carrying RTD signals should be routed as far away as possible from
power carrying cables such as power supply and CT cables.
4.
If after wiring the RTD leads to the 369, the RTD temperature displayed by the
Relay is zero, then check for the following conditions:
a. Shorted RTD
b. RTD hot and compensation leads are reversed, i.e. hot lead in compensation terminal and compensation lead in hot terminal.
RS485 Communications Port
The 369 can provide direct or remote communications (via a modem). An RS232 to
RS485 converter is used to tie it to a PC/PLC or DCS system. The 369 uses the
Modicon MODBUS® RTU protocol (functions 03, 04, and 16) to interface with PCs,
PLCs, and DCS systems.
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369 DO’S AND DONT’S
RS485 communications was chosen to be used with the 369 because it allows
communications over long distances of up to 4000 ft. However, care must be taken
for it to operate properly and trouble free. The recommendations listed below must
be followed to obtain reliable communications:
1.
A twisted, shielded pair (preferably a 24 gauge Belden 9841 type or 120
equivalent) must be used and routed away from power carrying cables, such
as power supply and CT cables.
2.
No more than 32 devices can co-exist on the same link. If however, more than
32 devices should be daisy chained together, a REPEATER must be used. Note
that a repeater is just another RS232 to RS485 converter device. The shields of
all 369 units should also be daisy chained together and grounded at the
MASTER (PC/PLC) only. This is due to the fact that if shields are grounded at
different points, a potential difference between grounds might exist resulting
in placing one or more of the transceiver chips (chip used for communications)
in an unknown state, i.e. not receiving nor sending. The corresponding 369
communications might be erroneous, intermittent or unsuccessful.
3.
Two sets of 120 ohm/ 0.5 W resistor and 1 nF / 50 V capacitor in series must
be used (value matches the characteristic impedance of the line). One set at
the 369 end, connected between the positive and negative terminals (#46 &
#47 on 369) and the second at the other end of the communications link. This
is to prevent reflections and ringing on the line. If a different value resistor is
used, it runs the risk of over loading the line and communications might be
erroneous, intermittent or totally unsuccessful.
4.
It is highly recommended that connection from the 369 communication
terminals be made directly to the interfacing Master Device (PC/PLC/DCS),
without the use of stub lengths and/or terminal blocks. This is also to minimize
ringing and reflections on the line.
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CT SPECIFICATION AND SELECTION
CHAPTER 7: APPLICATIONS
Don’ts
Don’t apply direct voltage to the Digital Inputs.
There are 6 switch inputs (Spare Input; Differential Input; Speed Switch; Access;
Emergency Restart; External Reset) that are designed for dry contact connections
only. Applying direct voltage to the inputs, it may result in component damage to
the digital input circuitry.
Grounding of the RTDs should not be done in two places.
When grounding at the 369, only one Return lead need be grounded as all are
hard-wired together internally. No error will be introduced into the RTD reading by
grounding in this manner.
Running more than one RTD Return lead back will cause significant errors as two
or more parallel paths for return have been created.
Don’t reset an 86 Lockout switch before resetting the 369.
If an external 86 lockout device is used and connected to the 369, ensure that the
369 is reset prior to attempting to reset the lockout switch. If the 369 is still tripped,
it will immediately re-trip the lockout switch. Also if the lockout switch is held
reset, the high current draw of the lockout switch coil may cause damage to itself
and/or the 369 output relay.
7.4
CT Specification and Selection
7.4.1
CT Specification
369 CT Withstand
Withstand is important when the phase or ground CT has the capability of driving a large
amount of current into the interposing CTs in the relay. This typically occurs on retrofit
installations when the CTs are not sized to the burden of the relay. Electronic relays
typically have low burdens (mΩ), while the older electromechanical relays have typically
high burdens (1 Ω).
For high current ground faults, the system will be either low resistance or solidly grounded.
The limiting factor that determines the ground fault current that can flow in these types of
systems is the source capacity. Withstand is not important for ground fault on high
resistance grounded systems. On these systems, a resistor makes the connection from
source to ground at the source (generator, transformer). The resistor value is chosen so
that in the event of a ground fault, the current that flows is limited to a low value, typically
5, 10, or 20 A.
Since the potential for very large faults exists (ground faults on high resistance grounded
systems excluded), the fault must be cleared as quickly as possible. It is therefore
recommended that the time delay for short circuit and high ground faults be set to
instantaneous. Then the duration for which the 369 CTs subjected to high withstand will be
less than 250 ms (369 reaction time is less than 50ms + breaker clearing time).
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Note
NOTE
CT SPECIFICATION AND SELECTION
Care must be taken to ensure that the interrupting device is capable of interrupting
the potential fault. If not, some other method of interrupting the fault should be used,
and the feature in question should be disabled (e.g. a fused contactor relies on fuses to
interrupt large faults).
The 369 CTs were subjected to high currents for 1 second bursts. The CTs were capable of
handling 500 A (500 A relates to a 100 times the CT primary rating). If the time duration
required is less than 1 second, the withstand level will increase.
CT Size and Saturation
The rating (as per ANSI/IEEE C57.13.1) for relaying class CTs may be given in a format such
as: 2.5C100, 10T200, T1OO, 10C50, or C200. The number preceding the letter represents
the maximum ratio correction; no number in this position implies that the CT accuracy
remains within a 10% ratio correction from 0 to 20 times rating.
The letter is an indication of the CT type:
•
A 'C' (formerly L) represents a CT with a low leakage flux in the core where there is no
appreciable effect on the ratio when used within the limits dictated by the class and
rating. The 'C' stands for calculated; the actual ratio correction should be different
from the calculated ratio correction by no more than 1%. A 'C' type CT is typically a
bushing, window, or bar type CT with uniformly distributed windings.
•
A 'T' (formerly H) represents a CT with a high leakage flux in the core where there is
significant effect on CT performance. The 'T' stands for test; since the ratio correction
is unpredictable, it is to be determined by test. A 'T' type CT is typically primary wound
with unevenly distributed windings. The subsequent number specifies the secondary
terminal voltage that may be delivered by the full winding at 20 times rated
secondary current without exceeding the ratio correction specified by the first
number of the rating. (Example: a 10C100 can develop 100 V at 20 × 5 A, therefore an
appropriate external burden would be 1 Ω or less to allow 20 times rated secondary
current with less than 10% ratio correction.) Note that the voltage rating is at the
secondary terminals of the CT and the internal voltage drop across the secondary
resistance must be accounted for in the design of the CT. There are seven voltage
ratings: 10, 20, 50, 100, 200, 400, and 800. If a CT comes close to a higher rating, but
does not meet or exceed it, then the CT must be rated to the lower value.
In order to determine how much current CTs can output, the secondary resistance of the
CT is required. This resistance will be part of the equation as far as limiting the current flow.
This is determined by the maximum voltage that may be developed by the CT secondary
divided by the entire secondary resistance, CT secondary resistance included.
7.4.2
CT Selection
The 369 phase CT should be chosen such that the FLA (FLC) of the motor falls within 50 to
100% of the CT primary rating. For example, if the FLA of the motor is 173 A, a primary CT
rating of 200, 250, or 300 can be chosen (200 being the better choice). This provides
maximum protection of the motor.
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CHAPTER 7: APPLICATIONS
The CT selected must then be checked to ensure that it can drive the attached burden
(relay and wiring and any auxiliary devices) at maximum fault current levels without
saturating. There are essentially two ways of determining if the CT is being driven into
saturation:
1.
Use CT secondary resistance
Burden = CT secondary resistance + Wire resistance + Relay burden resistance
I fault maximum
CT secondary voltage = Burden × -----------------------------------CT ratio
Example:
Maximum fault level = 6 kA
369 burden = 0.003 Ω
CT = 300:5
CT secondary resistance = 0.088 Ω
Wire length (1 lead) = 50 m
Wire Size = 4.00 mm2
Ohms/km = 4.73 Ω
∴ Burden = 0.088 + (2 × 50)(4.73 / 1000) + 0.003 = 0.564 Ω
∴ CT secondary voltage = 0.564 × (6000 / (300 / 5)) = 56.4 V
Using the excitation curves for the 300:5 CT we see that the knee voltage is at 70 V,
therefore this CT is acceptable for this application.
2.
Use CT class
Burden = Wire resistance + Relay burden resistance
I fault maximum
CT secondary voltage = Burden × -----------------------------------CT ratio
Example:
Maximum fault level = 6 kA, 369 burden = 0.003 Ω, CT = 300:5, CT class = C20,
Wire length (1 lead) = 50 m, Wire Size = 4.00 mm2, Ohms/km = 4.73 Ω
∴ Burden = (2 × 50) × (4.73/1000) + 0.003 = 0.476 Ω
∴ CT secondary voltage = 0.476 × (6000 / (300 / 5)) = 47.6 V
From the CT class (C20): The amount of secondary voltage the CT can deliver to the
load burden at 20 × CT without exceeding the 10% ratio error is 20 V. This
application calls for 6000/300 = 20 × CT (Fault current / CT primary). Thus the 10%
ratio error may be exceeded.
The number in the CT class code refers to the guaranteed secondary voltage of the
CT. Therefore, the maximum current that the CT can deliver can be calculated as
follows:
maximum secondary current = CT class / Burden = 20 / 0.476 = 42.02 A
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CHAPTER 7: APPLICATIONS
PROGRAMMING EXAMPLE
FIGURE 7–1: Equivalent CT Circuit
7.5
Programming Example
7.5.1
Programming Example
Information provided by a motor manufacturer can vary from nameplate information to a
vast amount of data related to every parameter of the motor. The table below shows
selected information from a typical motor data sheet and FIGURE 7–2: Motor Thermal
Limits shows the related motor thermal limit curves. This information is required to set the
369 for a proper protection scheme.
The following is a example of how to determine the 369 setpoints. It is only a example
and the setpoints should be determined based on the application and specific design
of the motor.
Table 7–2: Selected Information from a Typical Motor Data Sheet
Driven equipment
Reciprocating Compressor
Ambient Temperature
min. –20°C; max. 41°C
Type or Motor
Synchronous
Voltage
6000 V
Nameplate power
2300 kW
Service Factor
1
Insulation class
F
Temperature rise stator / rotor
79 / 79 K
Max. locked rotor current
550% FLC
Locked rotor current% FLC
500% at 100% Voltage / 425% at 85% Voltage
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PROGRAMMING EXAMPLE
CHAPTER 7: APPLICATIONS
Table 7–2: Selected Information from a Typical Motor Data Sheet
Starting time
4 seconds at 100% Voltage / 6.5 seconds at
85% Voltage
Max. permissible starts cold / hot
3/2
Rated Load Current
229A at 100% Load
FIGURE 7–2: Motor Thermal Limits
Phase CT
The phase CT should be chosen such that the FLC is 50% to 100% of CT primary. Since the
FLC is 229 A a 250:5, 300:5, or 400:5 CT may be chosen (a 250:5 is the better choice).
229 / 0.50 = 458 or 229 / 1.00 = 229
Motor FLC
Set the Motor Full Load Current to 229A, as per data sheets.
Ground CT
For high resistive grounded systems, sensitive ground detection is possible with the
50:0.025 CT. On solidly grounded or low resistive grounded systems where the fault current
is much higher, a 1A or 5A CT should be used. If residual ground fault connection is to be
used, the ground fault CT ratio most equal the phase CT ratio. The zero sequence CT
chosen needs to be able to handle all potential fault levels without saturating.
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PROGRAMMING EXAMPLE
VT Settings
The motor is going to be connected in Wye, hence, the VT connection type will be
programmed as Wye. Since the motor voltage is 6000V, the VT being used will be 6000:120.
The VT ratio to be programmed into the 369 will then be 50:1 (6000/120) and the Motor
Rated Voltage will be programmed to 6000V, as per the motor data sheets.
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PROGRAMMING EXAMPLE
CHAPTER 7: APPLICATIONS
Overload Pickup
The overload pickup is set to the same as the service factor of the motor. In this case, it
would be set to the lowest setting of 1.01 x FLC for the service factor of 1.
Unbalance Bias Of Thermal Capacity
Enable the Unbalance Bias of Thermal Capacity so that the heating effect of unbalance
currents is added to the Thermal Capacity Used.
Unbalance Bias K Factor
The K value is used to calculate the contribution of the negative sequence current flowing
in the rotor due to unbalance. It is defined as:
R r2
-------- , where: Rr2 = rotor negative sequence resistance, Rr1 = rotor positive sequence
R r1
resistance
175
175
K = ---------- = ----------- @ 6
2
2
L RA
5.5
where: LRA = Locked Rotor Current
The above formula is based on empirical data.
Note
NOTE
The 369 has the ability to learn the K value after five successful starts. After 5 starts, turn
this setpoint off so that the 369 uses the learned value
Hot/Cold Curve Ratio
The hot/cold curve ratio is calculated by simply dividing the hot safe stall time by the cold
safe stall time. This information can be extracted from the Thermal Limit curves. From
FIGURE 7–2: Motor Thermal Limits, we can determine that the hot safe stall time is
approximately 18 seconds and the cold safe stall time is approximately 24 seconds.
Therefore, the Hot/Cold curve ratio should be programmed as 0.75 (18 / 24) for this
example.
Running and Stopped Cool Time Constant
The running cool time is the time required for the motor to cool while running. This
information is usually supplied by the motor manufacturer but is not part of the given data.
The motor manufacturer should be contacted to find out what the cool times are.
The Thermal Capacity Used quantity decays exponentially to simulate the cooling of the
motor. The rate of cooling is based upon the running cool time constant when the motor is
running, or the stopped cool time constant when the motor is stopped. The entered cool
time constant is one fifth the total cool time from 100% thermal capacity used down to 0%
thermal capacity used.
The 369 has a unique capability of learning the cool time constant. This learned parameter
is only functional if the Stator RTDs are connected to the 369. The learned cool time
algorithm observes the temperature of the motor as it cools, thus determining the length
of time required for cooling. If the cool times can not be retrieved from the motor
manufacturer, then the Learned Cool Time must be enabled (if the stator RTDs are
connected).
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PROGRAMMING EXAMPLE
Motors have a fanning action when running due to the rotation of the rotor. For this reason,
the running cool time is typically half of the stopped cool time.
Refer to the Selection of Cool Time application note for more details on how to determine
the cool time constants when not provided with the motor.
RTD Biasing
This will enable the temperature from the Stator RTD sensors to be included in the
calculations of Thermal Capacity. This model determines the Thermal Capacity Used based
on the temperature of the Stators and is a separate calculation from the overload model
for calculating Thermal Capacity Used. RTD biasing is a back up protection element which
accounts for such things as loss of cooling or unusually high ambient temperature. There
are three parameters to set: RTD Bias Min, RTD Bias Mid, RTD Bias Max.
RTD Bias Minimum
Set to 40°C which is the ambient temperature (obtained from data sheets).
RTD Bias Mid Point
The center point temperature is set to the motor’s hot running temperature and is
calculated as follows:
Temperature Rise of Stator + Ambient Temperature.
The temperature rise of the stator is 79°K, obtained from the data sheets. Therefore, the
RTD Center point temperature is set to 120°C (79 + 40).
RTD Bias Maximum
This setpoint is set to the rating of the insulation or slightly less. A class F insulation is used
in this motor which is rated at 155°C.
Overload Curve
If only one thermal limit curve is provided, the chosen overload curve should fit below it.
When a hot and cold thermal limit curve is provided, the chosen overload curve should fit
between the two curves and the programmed Hot/Cold ratio is used in the Thermal
Capacity algorithm to take into account the thermal state of the motor. The best fitting 369
standard curve is curve # 4, as seen in FIGURE 7–2: Motor Thermal Limits on page 7–12.
Short Circuit Trip
The short circuit trip should be set above the maximum locked rotor current but below the
short circuit current of the fuses. The data sheets indicate a maximum locked rotor current
of 550% FLC or 5.5 × FLC. A setting of 6 × FLC with a instantaneous time delay will be ideal
but nuisance tripping may result due to unusually high demanding starts or starts while
the load is coupled. If need be, set the S/C level higher to a maximum of 8 × FLC to override
these conditions.
Mechanical Jam
If the process causes the motor to be prone to mechanical jams, set the Mechanical Jam
Trip and Alarm accordingly. In most cases, the overload trip will become active before the
Mechanical Trip, however, if a high overload curve is chosen, the Mechanical Jam level and
time delay become more critical. The setting should then be set to below the overload
curve but above any normal overload conditions of the motor. The main purpose of the
mechanical jam element is to protect the driven equipment due to jammed, or broken
equipment.
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PROGRAMMING EXAMPLE
CHAPTER 7: APPLICATIONS
Undercurrent
If detection of loss of load is required for the specific application, set the undercurrent
element according to the current that will indicate loss of load. For example, this could be
programmed for a pump application to detect loss of fluid in the pipe.
Unbalance Alarm and Trip
The unbalance settings are determined by examining the motor application and motor
design. In this case, the motor being protected is a reciprocating compressor, in which
unbalance will be a normal running condition, thus this setting should be set high. A setting
of 20% for the Unbalance Alarm with a delay of 10 seconds would be appropriate and the
trip may be set to 25% with a delay of 10 seconds
Ground Fault
Unfortunately, there is not enough information to determine a ground fault setting. These
settings depend on the following information:
1.
The Ground Fault current available.
2.
System Grounding - high resistive grounding, solidly grounded, etc.
3.
Ground Fault CT used.
4.
Ground Fault connection - zero sequence or Residual connection.
Acceleration Trip
This setpoint should be set higher than the maximum starting time to avoid nuisance
tripping when the voltage is lower or for varying loads during starting. If reduced voltage
starting is used, a setting of 8 seconds would be appropriate, or if direct across the line
starting is used, a setting of 5 seconds could be used.
Start Inhibit
This function should always be enabled after five successful starts to protect the motor
during starting while it is already hot. The 369 learns the amount of thermal capacity used
at start. If the motor is hot, thus having some thermal capacity, the 369 will not allow a
start if the available thermal capacity is less than the required thermal capacity for a start.
For more information regarding start inhibit refer to application note in section 7.6.6.
Starts/Hour
Starts/Hour can be set to the # of cold starts as per the data sheet. For this example, the
starts/hour would be set to 3.
Time Between Starts
In some cases, the motor manufacturer will specify the time between motor starts. In this
example, this information is not given so this feature can be turned “Off”. However, if the
information is given, the time provided on the motor data sheets should be programmed.
Stator RTDs
RTD trip level should be set at or below the maximum temperature rating of the insulation.
This example has a class F insulation which has a temperature rating of 155°C, therefore
the Stator RTD Trip level should be set to between 140°C to 155°C. The RTD alarm level
should be set to a level to provide a warning that the motor temperature is rising. For this
example, 120°C or 130°C would be appropriate.
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APPLICATIONS
Bearing RTDs
The Bearing RTD alarm and trip settings will be determined by evaluating the temperature
specification from the bearing manufacturer.
7.6
Applications
7.6.1
Motor Status Detection
The 369 detects a stopped motor condition when the phase current falls below 5% of CT,
and detects a starting motor condition when phase current is sensed after a stopped
motor condition. If the motor idles at 5% of CT, several starts and stops can be detected
causing nuisance lockouts if Starts/Hour, Time Between Starts, Restart Block, Start Inhibit,
or Backspin Timer are programmed. As well, the learned values, such as the Learned
Starting Thermal Capacity, Learned Starting Current and Learned Acceleration time can be
incorrectly calculated.
To overcome this potential problem, the Spare Digital Input can be configured to read the
status of the breaker and determine whether the motor is stopped or simply idling. With
the spare input configured as Starter Status and the breaker auxiliary contacts wired
across the spare input terminals, the 369 senses a stopped motor condition only when the
phase current is below 5% of CT (or zero) AND the breaker is open. If both of these
conditions are not met, the 369 will continue to operate as if the motor is running and the
starting elements remain unchanged. Refer to the flowchart below for details of how the
369 detects motor status and how the starter status element further defines the condition
of the motor.
When the Starter Status is programmed, the type of breaker contact being used for
monitoring must be set. The following are the states of the breaker auxiliary contacts in
relation to the breaker:
• 52a, 52aa - open when the breaker contacts are open and closed when the
breaker contacts are closed
• 52b, 52bb - closed when the breaker contacts are open and open when the
breaker contacts are closed
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FIGURE 7–3: Flowchart Showing How Motor Status is Determined
7.6.2
Selection of Cool Time Constants
Thermal limits are not a black and white science and there is some art to setting a
protective relay thermal model. The definition of thermal limits mean different things to
different manufacturers and quite often, information is not available. Therefore, it is
important to remember what the goal of the motor protection thermal modeling is: to
thermally protect the motor (rotor and stator) without impeding the normal and expected
operating conditions that the motor will be subject to.
The thermal model of the 369 provides integrated rotor and stator heating protection. If
cooling time constants are supplied with the motor data they should be used. Since the
rotor and stator heating and cooling is integrated into a single model, use the longer of the
cooling time constants (rotor or stator).
7–18
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If however, no cooling time constants are provided, settings will have to be determined.
Before determining the cool time constant settings, the duty cycle of the motor should be
considered. If the motor is typically started and run continuously for very long periods of
time with no overload duty requirements, the cooling time constants can be large. This
would make the thermal model conservative. If the normal duty cycle of the motor involves
frequent starts and stops with a periodic overload duty requirement, the cooling time
constants will need to be shorter and closer to the actual thermal limit of the motor.
Normally motors are rotor limited during starting. Thus RTDs in the stator do not provide
the best method of determining cool times. Determination of reasonable settings for the
running and stopped cool time constants can be accomplished in one of the following
manners listed in order of preference.
1.
The motor running and stopped cool times or constants may be provided on
the motor data sheets or by the manufacturer if requested. Remember that
the cooling is exponential and the time constants are one fifth the total time
to go from 100% thermal capacity used to 0%.
2.
Attempt to determine a conservative value from available data on the motor.
See the following example for details.
3.
If no data is available an educated guess must be made. Perhaps the motor
data could be estimated from other motors of a similar size or use. Note that
conservative protection is better as a first choice until a better understanding
of the motor requirements is developed. Remember that the goal is to protect
the motor without impeding the operating duty that is desired.
Example:
Motor data sheets state that the starting sequence allowed is 2 cold or 1 hot after which
you must wait 5 hours before attempting another start.
• This implies that under a normal start condition the motor is using between 34 and
50% thermal capacity. Hence, two consecutive starts are allowed, but not three
(i.e. 34 × 3 > 100).
• If the hot and cold curves or a hot/cold safe stall ratio are not available program
0.5 (1 hot / 2 cold starts) in as the hot/cold ratio.
• Programming Start Inhibit ‘On’ makes a restart possible as soon as 62.5%
(50 × 1.25) thermal capacity is available.
• After 2 cold or 1 hot start, close to 100% thermal capacity will be used. Thermal
capacity used decays exponentially (see 369 manual section on motor cooling for
calculation). There will be only 37% thermal capacity used after 1 time constant
which means there is enough thermal capacity available for another start.
Program 60 minutes (5 hours) as the stopped cool time constant. Thus after 2 cold
or 1 hot start, a stopped motor will be blocked from starting for 5 hours.
Since the rotor cools faster when the motor is running, a reasonable setting for the running
cool time constant might be half the stopped cool time constant or 150 minutes.
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7.6.3
CHAPTER 7: APPLICATIONS
Thermal Model
FIGURE 7–4: Thermal Model Block Diagram
UB, U/BUnbalance
I/PInput
IavgAverage Three Phase Current
IeqEquivalent Average Three Phase Current
IpPositive Sequence Current
InNegative Sequence Current
KConstant Multiplier that Equates In to Ip
FLCFull Load Current
7–20
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FLC TCRFLC Thermal Capacity Reduction setpoint
TCThermal Capacity used
RTD BIAS TCTC Value looked up from RTD Bias Curve
Note
NOTE
7.6.4
If Unbalance input to thermal memory is enabled, the increase in heating is reflected in
the thermal model. If RTD Input to Thermal Memory is enabled, the feed-back from the
RTDs will correct the thermal model.
RTD Bias Feature
FIGURE 7–5: RTD Bias Feature
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Legend
TmaxRTD Bias Maximum Temperature Value
TminRTD Bias Minimum Temperature Value
Hottest RTDHottest Stator RTD measured
TCThermal Capacity Used
TC RTDThermal Capacity Looked up on RTD Bias Curve.
TC ModelThermal Capacity based on the Thermal Model
7.6.5
Thermal Capacity Used Calculation
The overload element uses a Thermal Capacity algorithm to determine an overload trip
condition. The extent of overload current determines how fast the Thermal Memory is
filled, i.e. if the current is just over FLC × O/L Pickup, Thermal Capacity slowly increases;
versus if the current far exceeds the FLC pickup level, the Thermal Capacity rapidly
increases. An overload trip occurs when the Thermal Capacity Used reaches 100%.
The overload current does not necessarily have to pass the overload curve for a trip to take
place. If there is Thermal Capacity already built up, the overload trip will occur much faster.
In other words, the overload trip will occur at the specified time on the curve only when the
Thermal Capacity is equal to zero and the current is applied at a stable rate. Otherwise, the
Thermal Capacity increases from the value prior to overload, until a 100% Thermal
Capacity is reached and an overload trip occurs.
It is important to chose the overload curve correctly for proper protection. In some cases it
is necessary to calculate the amount of Thermal Capacity developed after a start. This is
done to ensure that the 369 does not trip the motor prior to the completion of a start. The
actual filling of the Thermal Capacity is the area under the overload current curve.
Therefore, to calculate the amount of Thermal Capacity after a start, the integral of the
overload current most be calculated. Below is an example of how to calculate the Thermal
Capacity during a start:
Thermal Capacity Calculation:
4.
Draw lines intersecting the acceleration curve and the overload curve. This is
illustrated in FIGURE 7–6: Thermal Limit Curves on page 7–24.
5.
Determine the time at which the drawn line intersect, the acceleration curve
and the time at which the drawn line intersects the chosen overload curve.
6.
Integrate the values that have been determined.
Table 7–3: Thermal Capacity Calculations
7–22
Time Period
(seconds)
Motor Starting
Current
(% of FLC)
Custom Curve
Trip Time
(seconds)
Total Accumulated Thermal
Capacity Used (%)
0 to 3
580
38
3 / 38 × 100 = 7.8%
3 to 6
560
41
(3 / 41 × 100) + 7.8% = 15.1%
6 to 9
540
44
(3 / 44 × 100) + 15.1% = 21.9%
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Table 7–3: Thermal Capacity Calculations
Time Period
(seconds)
Motor Starting
Current
(% of FLC)
Custom Curve
Trip Time
(seconds)
Total Accumulated Thermal
Capacity Used (%)
9 to 12
520
47
(3 / 47 × 100) + 21.9% = 28.3%
12 to 14
500
51
(2 / 51 × 100) + 28.3% = 32.2%
14 to 15
480
56
(1 / 56 × 100) + 32.2% = 34.0%
15 to 16
460
61
(1 / 61 × 100) + 34.0% = 35.6%
16 to 17
440
67
(1 / 67 × 100) + 35.6% = 37.1%
17 to 18
380
90
(1 / 90 × 100) + 37.1% = 38.2%
18 to 19
300
149
(1 / 149 × 100) + 38.2% = 38.9%
19 to 20
160
670
(1 / 670 × 100) + 38.9% = 39.0%
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Therefore, after this motor has completed a successful start, the Thermal Capacity would
have reached approximately 40%.
FIGURE 7–6: Thermal Limit Curves
Thermal limit curves illustrate thermal capacity used calculation during a start.
7.6.6
Start Inhibit
The Start Inhibit element of the 369 provides an accurate and reliable start protection
without unnecessary prolonged lockout times causing production down time. The lockout
time is based on the actual performance and application of the motor and not on the
worst case scenario, as other start protection elements.
The 369 Thermal Capacity algorithm is used to establish the lockout time of the Start
Inhibit element. Thermal Capacity is a percentage value that gives an indication of how hot
the motor is and is derived from the overload currents (as well as Unbalance currents and
RTDs if the respective biasing functions are enabled). The easiest way to understand the
7–24
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Thermal Modeling function of the 369 is to image a bucket that holds Thermal Capacity.
Once this imaginary bucket is full, an overload trip occurs. The bucket is filled by the
amount of overload current integrated over time and is compared to the programmed
overload curve to obtain a percentage value. The thermal capacity bucket is emptied
based on the programmed running cool time when the current has fallen below the Full
Load Current (FLC) and is running normally.
Upon a start, the inrush current is very high, causing the thermal capacity to rapidly
increase. The Thermal Capacity Used variable is compared to the amount of the Thermal
Capacity required to start the motor. If there is not enough thermal capacity available to
start the motor, the 369 blocks the operator from starting until the motor has cooled to a
level of thermal capacity to successfully start.
Assume that a motor requires 40% Thermal Capacity to start. If the motor was running in
overload prior to stopping, the thermal capacity would be some value; say 80%. Under
such conditions the 369 (with Start Inhibit enabled) will lockout or prevent the operator
from starting the motor until the thermal capacity has decreased to 60% so that a
successful motor start can be achieved. This example is illustrated in FIGURE 7–7:
Illustration of the Start Inhibit Functionality on page 7–26.
The lockout time is calculated as follows:
TCused
lockout time = stopped_cool_time_constant × ln  -----------------------------------------
 100 – TClearned
(EQ 7.1)
where:
TC_used = Thermal Capacity Used
TC_learned = Learned Thermal Capacity required to start
stopped_cool_time
= one of two variables will be used:
1. Learned cool time is enabled, or
2. Programmed stopped cool time
The learned start capacity is updated every four starts. A safe margin is built into the
calculation of the LEARNED START CAPACITY REQUIRED to ensure successful
completion of the longest and most demanding starts. The Learned Start Capacity is
calculated as follows:
Start_TC1 + Start_TC2 + Start_TC3 + Start_TC4 + Start_TC5
4
LEARNED START CAPACITY = -----------------------------------------------------------------------------------------------------------------------------------------------------
where:
(EQ 7.2)
Start_TC1 = the thermal capacity required for the first start
Start_TC2 = the thermal capacity required for the second start, etc.
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FIGURE 7–7: Illustration of the Start Inhibit Functionality
7.6.7
Two-Phase CT Configuration
This section illustrates how to use two CTs to sense three phase currents.
The proper configuration for using two CTs rather than three to detect phase current is
shown below. Each of the two CTs acts as a current source. The current from the CT on
phase ‘A’ flows into the interposing CT on the relay marked ‘A’. From there, the it sums with
the current flowing from the CT on phase ‘C’ which has just passed through the interposing
CT on the relay marked ‘C’. This ‘summed’ current flows through the interposing CT marked
‘B’ and splits from there to return to its respective source (CT). Polarity is very important
since the value of phase ‘B’ must be the negative equivalent of 'A' + 'C' for the sum of all
the vectors to equate to zero. Note that there is only one ground connection. Making two
ground connections creates a parallel path for the current
FIGURE 7–8: Two Phase Wiring
7–26
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In the two CT configuration, the currents sum vectorially at the common point of the two
CTs. The following diagram illustrates the two possible configurations. If one phase is
reading high by a factor of 1.73 on a system that is known to be balanced, simply reverse
the polarity of the leads at one of the two phase CTs (taking care that the CTs are still tied
to ground at some point). Polarity is important.
FIGURE 7–9: Vectors Showing Reverse Polarity
To illustrate the point further, the diagram here shows how the current in phases 'A' and 'C'
sum up to create phase 'B'.
FIGURE 7–10: Resultant Phase Current, Correctly Wired Two-Phase CT System
Once again, if the polarity of one of the phases is out by 180°, the magnitude of the
resulting vector on a balanced system will be out by a factor of 1.73.
FIGURE 7–11: Resultant Phase Current, Incorrectly Wired Two-Phase CT System
On a three wire supply, this configuration will always work and unbalance will be detected
properly. In the event of a single phase, there will always be a large unbalance present at
the interposing CTs of the relay. If for example phase ‘A’ was lost, phase ‘A’ would read zero
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while phases ‘B’ and ‘C’ would both read the magnitude of phase ‘C’. If on the other hand,
phase ‘B’ was lost, at the supply, ‘A’ would be 180× out of phase with phase ‘C’ and the
vector addition would be zero at phase ‘B’.
7.6.8
Ground Fault Detection on Ungrounded Systems
The 50:0.025 ground fault input is designed for sensitive detection of faults on a high
resistance grounded system. Detection of ground currents from 1 to 10 A primary
translates to an input of 0.5 mA to 5 mA into the 50:0.025 tap. Understanding this allows
the use of this input in a simple manner for the detection of ground faults on ungrounded
systems.
The following diagram illustrates how to use a wye-open delta voltage transformer
configuration to detect phase grounding. Under normal conditions, the net voltage of the
three phases that appears across the 50:0.025 input and the resistor is close to zero. Under
a fault condition, assuming the secondaries of the VTs to be 69 V, the net voltage seen by
the relay and the resistor is 3Vo or 3 × 69 V = 207 V.
FIGURE 7–12: Ground Fault Detection on Ungrounded Systems
Since the wire resistance should be relatively small in comparison to the resistor chosen,
the current flow will be a function of the fault voltage seen on the open delta transformer
divided by the chosen resistor value plus the burden of the 50:0.025 input (1200 Ω).
Example:
If a pickup range of 10 to 100 V is desired, the resistor should be chosen as follows:
1.
1 to 10 A pickup on the 2000:1 tap = 0.5 mA – 5 mA.
2.
10 V / 0.5 mA = 20 kΩ.
3.
If the resistor chosen is 20 kΩ – 1.2 kΩ = 18.8 kΩ, the wattage should be greater than
E2/R, approximately (207 V)2 / 18.8 kΩ = 2.28 W. Therefore, a 5 W resistor will suffice.
The VTs must have a primary rating equal or greater than the line to line voltage, as
this is the voltage that will be seen by the unfaulted inputs in the event of a fault.
Note
NOTE
7–28
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7.6.9
APPLICATIONS
RTD Circuitry
This section illustrates the functionality of the RTD circuitry in the 369 Motor Protection
Relay.
FIGURE 7–13: RTD Circuitry
A constant current source sends 3 mA DC down legs A and C. A 6 mA DC current returns
down leg B. It may be seen that:
( V AB = V LeadA + V LeadB ) and V CB = V LeadC + V RTD + V LeadB
(EQ 7.3)
or
( V AB = V comp + V return ) and V CB = V hot + V RTD + V return
(EQ 7.4)
The above holds true providing that all three leads are the same length, gauge, and
material, hence the same resistance.
R LeadA = R LeadB = R LeadC = R Lead
(EQ 7.5)
or
R comp = R return = R hot = R Lead
(EQ 7.6)
Electronically, subtracting VAB from VBC leaves only the voltage across the RTD. In this
manner lead length is effectively negated:
V CB – V AB = ( V Lead + V RTD + V Lead ) – ( V Lead + V Lead )
V CB – V AB = V RTD
(EQ 7.7)
7.6.10 Reduced RTD Lead Number Application
The 369 requires three leads to be brought back from each RTD: Hot, Return, and
Compensation. In certain situations this can be quite expensive. However, it is possible to
reduce the number of leads so that three are required for the first RTD and only one for
each successive RTD. Refer to the following diagram for wiring configuration.
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FIGURE 7–14: Reduced Wiring RTDs
The Hot line for each RTD is run as usual for each RTD. However, the Compensation and
Return leads need only be run for the first RTD. At the motor RTD terminal box, connect the
RTD Return leads together with as short as possible jumpers. At the 369 relay, the
Compensation leads must be jumpered together.
Note that an error is produced on each RTD equal to the voltage drop across the RTD
return jumper. This error increases for each successive RTD added as:
VRTD1 = VRTD1
VRTD2 = VRTD2 + VJ3
VRTD3 = VRTD3 + VJ3 + VJ4
VRTD4 = VRTD4 + VJ3+ VJ4 + VJ5, etc....
This error is directly dependent on the length and gauge of the jumper wires and any error
introduced by a poor connection. For RTD types other than 10C, the error introduced by the
jumpers is negligible.
Although this RTD wiring technique reduces the cost of wiring, the following disadvantages
must be noted:
7–30
1.
There is an error in temperature readings due to lead and connection
resistances. Not recommended for 10C RTDs.
2.
If the RTD Return lead to the 369 or one of the jumpers breaks, all RTDs from
the point of the break onwards will read open.
3.
If the Compensation lead breaks or one of the jumpers breaks, all RTDs from
the point of the break onwards will function without any lead compensation.
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7.6.11 Two Wire RTD Lead Compensation
An example of how to add lead compensation to a two wire RTD is shown below.
FIGURE 7–15: 2 Wire RTD Lead Compensation
The compensation lead would be added and it would compensate for the Hot and the
Return assuming they are all of equal length and gauge. To compensate for resistance of
the Hot and Compensation leads, a resistor equal to the resistance of the Hot lead could be
added to the compensation lead, though in many cases this is unnecessary.
7.6.12 Auto Transformer Starter Wiring
FIGURE 7–16: Auto Transformer, Reduced Voltage Starting Circuit
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369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
GE
Digital Energy
369 Motor Management Relay
Chapter 8: Testing
Testing
8.1
Test Setup
8.1.1
Introduction
This chapter demonstrates the procedures necessary to perform a complete functional
test of all the 369 hardware while also testing firmware/hardware interaction in the
process. Testing of the relay during commissioning using a primary injection test set will
ensure that CTs and wiring are correct and complete.
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
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HARDWARE FUNCTIONAL TESTING
8.1.2
CHAPTER 8: TESTING
Secondary Injection Test Setup
FIGURE 8–1: Secondary Injection Test Setup
8.2
Hardware Functional Testing
8.2.1
Phase Current Accuracy Test
The 369 specification for phase current accuracy is ±0.5% of 2 × CT when the injected
current is less than 2 × CT. Perform the steps below to verify accuracy.
1.
8–2
Alter the following setpoint:
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CHAPTER 8: TESTING
HARDWARE FUNCTIONAL TESTING
S2 SYSTEM SETUP  CT / VT SETUP  PHASE CT PRIMARY: 1000 A
2.
Measured values should be within ±10A of expected. Inject the values shown
in the table below and verify accuracy of the measured values. View the
measured values in:
A2 METERING DATA  CURRENT METERING
8.2.2
INJECTED
CURRENT 1
A UNIT
INJECTED
CURRENT 5
A UNIT
EXPECTED
CURRENT
READING
0.1 A
0.5 A
100 A
0.2 A
1.0 A
200 A
0.5 A
2.5 A
500 A
1A
5A
1000 A
1.5 A
7.5 A
1500 A
2A
10 A
2000 A
MEASURED
CURRENT
PHASE A
MEASURED
CURRENT
PHASE B
MEASURED
CURRENT
PHASE C
Voltage Input Accuracy Test
The 369 specification for voltage input accuracy is ±1.0% of full scale (240 V). Perform the
steps below to verify accuracy.
1.
Alter the following setpoints:
S2 SYSTEM  CT/VT SETUP  VT CONNECTION TYPE: Wye
S2 SYSTEM SETUP  CT/VT SETUP  VOLTAGE TRANSFORMER RATIO:
10
2.
Measured values should be within ±24 V (±1 × 240 × 10) of expected. Apply the
voltage values shown in the table and verify accuracy of the measured values.
View the measured values in:
A2 METERING DATA  VOLTAGE METERING
8.2.3
APPLIED LINENEUTRAL VOLTAGE
EXPECTED
VOLTAGE
READING
30 V
300 V
50 V
500 V
100 V
1000 V
150 V
1500 V
200 V
2000 V
240 V
2400 V
MEASURED
VOLTAGE A-N
MEASURED
VOLTAGE B-N
MEASURED
VOLTAGE C-N
Ground (1 A / 5 A) Accuracy Test
The 369 specification for the 1 A/5 A ground current input accuracy is ±0.5% of 1 × CT for
the 5 A input and ±0.5% of 5 × CT for the 1 A input. Perform the steps below to verify
accuracy.
5A Input:
1.
Alter the following setpoints:
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CHAPTER 8: TESTING
S2 SYSTEM SETUP  CT/VT SETUP  GROUND CT TYPE: 5A Secondary
S2 SYSTEM SETUP  CT/VT SETUP  GROUND CT PRIMARY: 1000 A
2.
Measured values should be ±5 A. Inject the values shown in the table below
into one phase only and verify accuracy of the measured values. View the
measured values in A2 METERING DATA  CURRENT METERING
INJECTED
CURRENT
5 A UNIT
EXPECTED
CURRENT
READING
0.5 A
100 A
1.0 A
200 A
2.5 A
500 A
5A
1000 A
MEASURED
GROUND
CURRENT
1A Input:
1.
Alter the following setpoints:
S2 SYSTEM SETUP  CT/VT SETUP  GROUND CT TYPE: 1A Secondary
S2 SYSTEM SETUP  CT/VT SETUP  GROUND CT PRIMARY: 1000 A
2.
8.2.4
Measured values should be ±25 A. Inject the values shown in the table below
into one phase only and verify accuracy of the measured values. View the
measured values in A2 METERING DATA  CURRENT METERING
INJECTED
CURRENT
1 A UNIT
EXPECTED
CURRENT
READING
0.1 A
100 A
0.2 A
200 A
0.5 A
500 A
1.0 A
1000 A
MEASURED
GROUND
CURRENT
50:0.025 Ground Accuracy Test
The 369 specification for GE Multilin 50:0.025 ground current input accuracy is ±0.5% of CT
rated primary (25 A). Perform the steps below to verify accuracy.
1.
Alter the following setpoint:
S2 SYSTEM SETUP  CT/VT SETUP  GROUND CT TYPE: MULTILIN
50:0.025
2.
Measured values should be within ±0.125 A of expected. Inject the values
shown below either as primary values into a GE Multilin 50:0.025 Core Balance
CT or as secondary values that simulate the core balance CT. Verify accuracy
of the measured values. View the measured values in A2 METERING DATA 
CURRENT METERING
8–4
PRIMARY INJECTED
CURRENT 50:0.025 CT
SECONDARY
INJECTED CURRENT
EXPECTED CURRENT
READING
0.25 A
0.125 mA
0.25 A
MEASURED
GROUND
CURRENT
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HARDWARE FUNCTIONAL TESTING
PRIMARY INJECTED
CURRENT 50:0.025 CT
SECONDARY
INJECTED CURRENT
EXPECTED CURRENT
READING
1A
0.5 mA
1.00 A
10 A
5 mA
10.00 A
25 A
12.5 mA
25.00 A
MEASURED
GROUND
CURRENT
RTD Accuracy Test
1.
The 369 specification for RTD input accuracy is ±2°. Alter the following
setpoints:
S6 RTD TEMPERATURE  RTD TYPE  STATOR RTD TYPE: “100 ohm
Platinum” (select desired type)
2.
Measured values should be ±2°C or ±4°F. Alter the resistances applied to the
RTD inputs as per the table below to simulate RTDs and verify accuracy of the
measured values. View the measured values in:
A2 METERING DATA  LOCAL RTD (and/or REMOTE RTD if using the RRTD Module)
3.
Select the preferred temperature units for the display. Alter the following
setpoint:
S1 369 SETUP  DISPLAY PREFERENCES  TEMPERATURE DISPLAY:
“Celsius” (or “Fahrenheit” if preferred)
4.
Repeat the above measurements for the other RTD types (120 ohm Nickel,
100 ohm Nickel and 10 ohm Copper)
APPLIED
RESISTANCE 100
Ohm PLATINUM
EXPECTED RTD TEMPERATURE
READING
MEASURED RTD TEMPERATURE
 SELECT ONE: ____(°C) ____(°F)
CELSIUS
FAHRENHEIT
1
84.27 ohms
–40°C
–40°F
100.00 ohms
0°C
32°F
119.39 ohms
50°C
122°F
138.50 ohms
100°C
212°F
157.32 ohms
150°C
302°F
175.84 ohms
200°C
392°F
APPLIED
RESISTANCE
120 Ohm
NICKEL
EXPECTED RTD TEMPERATURE
READING
MEASURED RTD TEMPERATURE
 SELECT ONE: ____(°C) ____(°F)
CELSIUS
FAHRENHEIT
1
92.76 ohms
–40°C
–40°F
120.00 ohms
0°C
32°F
157.74 ohms
50°C
122°F
200.64 ohms
100°C
212°F
248.95 ohms
150°C
302°F
303.46 ohms
200°C
392°F
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
2
2
3
3
4
4
5
5
6
6
7
7
8
9
10
11
12
8
9
10
11
12
8–5
HARDWARE FUNCTIONAL TESTING
8.2.6
CHAPTER 8: TESTING
APPLIED
RESISTANCE
100 Ohm
NICKEL
EXPECTED RTD
TEMPERATURE READING
MEASURED RTD TEMPERATURE
 SELECT ONE: ____(°C) ____(°F)
CELSIUS
FAHRENHEIT
1
79.13 ohms
–40°C
–40°F
100.0 ohms
0°C
32°F
129.1 ohms
50°C
122°F
161.8 ohms
100°C
212°F
198.7 ohms
150°C
302°F
240.0 ohms
200°C
392°F
APPLIED
RESISTANCE
10 Ohm
COPPER
EXPECTED RTD
TEMPERATURE READING
MEASURED RTD TEMPERATURE
 SELECT ONE: ____(°C) ____(°F)
CELSIUS
FAHRENHEIT
1
7.49 ohms
–40°C
–40°F
9.04 ohms
0°C
32°F
10.97 ohms
50°C
122°F
12.90 ohms
100°C
212°F
14.83 ohms
150°C
302°F
16.78 ohms
200°C
392°F
2
2
3
3
4
4
5
5
6
6
7
7
8
9
10
11
12
8
9
10
11
12
Digital Inputs
The digital inputs can be verified easily with a simple switch or pushbutton. Perform the
steps below to verify functionality of the digital inputs.
8–6
1.
Open switches of all of the digital inputs.
2.
View the status of the digital inputs in A1 STATUS  DIGITAL INPUT STATUS
3.
Close switches of all of the digital inputs.
4.
View the status of the digital inputs in A1 STATUS  DIGITAL INPUT STATUS
INPUT
EXPECTED STATUS
(SWITCH OPEN)
SPARE
Open
 PASS
 FAIL
EXPECTED STATUS
(SWITCH CLOSED)
 PASS
 FAIL
Shorted
DIFFERENTIAL RELAY
Open
Shorted
SPEED SWITCH
Open
Shorted
ACCESS SWITCH
Open
Shorted
EMERGENCY RESTART
Open
Shorted
EXTERNAL RESET
Open
Shorted
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
CHAPTER 8: TESTING
8.2.7
HARDWARE FUNCTIONAL TESTING
Analog Outputs
The 369 specification for analog output accuracy is ±1% of full scale. Perform the steps
below to verify accuracy.
4 to 20mA ANALOG OUTPUT:
1.
Alter the following setpoints:
S10 ANALOG OUTPUTS  ANALOG OUTPUT 1  ANALOG RANGE: 4-20
mA (repeat for analog outputs 2 to 4)
2.
Analog output values should be ±0.2 mA on the ammeter. Force the analog
outputs using the following setpoints:
S11 TESTING  TEST ANALOG OUTPUTS  FORCE ANALOG OUTPUT 1:
0%
(enter desired percent, repeat for analog outputs 2 to 4)
3.
Verify the ammeter readings for all the analog outputs
4.
Repeat 1 to 3 for the other forced output settings
ANALOG OUTPUT
FORCE VALUE
EXPECTED AMMETER
READING
0
4 mA
25
8 mA
50
12 mA
75
16 mA
100
20 mA
MEASURED AMMETER READING (mA)
1
2
3
4
0 to 1mA Analog Output:
1.
Alter the following setpoints:
S10 ANALOG OUTPUTS  ANALOG OUTPUT 1  ANALOG RANGE: “0-1
mA” (repeat for analog outputs 2 to 4)
2.
Analog output values should be ±0.01 mA on the ammeter. Force the analog
outputs using the following setpoints:
S11 TESTING  TEST ANALOG OUTPUTS  FORCE ANALOG OUTPUT 1:
“0%”
(enter desired percent, repeat for analog outputs 2 to 4)
3.
Verify the ammeter readings for all the analog outputs
4.
Repeat 1 to 3 for the other forced output settings.
ANALOG
OUTPUT FORCE
VALUE
EXPECTED AMMETER
READING
0
0 mA
25
0.25 mA
50
0.5 mA
75
0.75 mA
100
1.0 mA
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
MEASURED AMMETER READING (mA)
1
2
3
4
8–7
ADDITIONAL FUNCTIONAL TESTING
CHAPTER 8: TESTING
0 to 20mA Analog Output:
1.
Alter the following setpoints:
S10 ANALOG OUTPUTS  ANALOG OUTPUT 1  ANALOG RANGE: “0-20
mA” (repeat for analog outputs 2 to 4)
Analog output values should be ±0.2 mA on the ammeter. Force the analog
outputs using the following setpoints:
2.
S11 TESTING  TEST ANALOG OUTPUTS  FORCE ANALOG OUTPUT 1:
“0%”
(enter desired percent, repeat for analog outputs 2 to 4)
8.2.8
3.
Verify the ammeter readings for all the analog outputs
4.
Repeat steps 1 to 3 for the other forced output settings.
ANALOG
OUTPUT FORCE
VALUE
EXPECTED AMMETER
READING
0
0 mA
25
5 mA
50
10 mA
75
15 mA
100
20 mA
MEASURED AMMETER READING (mA)
1
2
3
4
Output Relays
To verify the functionality of the output relays, perform the following steps:
1.
Use the following setpoints:
S11 TESTING  TEST OUTPUT RELAYS  FORCE TRIP RELAY: “Energized”
S11 TESTING  TEST OUTPUT RELAYS  FORCE TRIP RELAY
DURATION: “Static”
2.
8.3
8–8
Using the above setpoints, individually select each of the other output relays
(AUX 1, AUX 2 and ALARM) and verify operation.
FORCE
OPERATION
SETPOINT
EXPECTED MEASUREMENT ( for SHORT)
ACTUAL MEASUREMENT ( for SHORT)
R1
R1
R1 Trip

no
R2
nc
no
R3
nc
no

R2 Auxiliary

R3 Auxiliary


R4 Alarm



R4
nc
no
nc





no
R2
nc
no
R3
nc
no
R4
nc
no
nc



Additional Functional Testing
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
CHAPTER 8: TESTING
8.3.1
ADDITIONAL FUNCTIONAL TESTING
Overload Curve Test
The 369 specification for overload curve timing accuracy is ±100 ms or ±2% of time to trip.
Pickup accuracy is as per current inputs (±0.5% of 2 × CT when the injected current is
< 2 × CT; ±1% of 20 × CT when the injected current is ≥ 2 × CT).
1.
Perform the steps below to verify accuracy. Alter the following setpoints:
S2 SYSTEM SETUP  CT/VT SETUP  PHASE CT PRIMARY: “1000”
S2 SYSTEM SETUP  CT/VT SETUP  MOTOR FULL LOAD AMPS FLA:
“1000”
S3 OVERLOAD PROTECTION  OVERLOAD CURVES  SELECT CURVE
STYLE:
“Standard”
S3 OVERLOAD PROTECTION  OVERLOAD CURVES  STANDARD
OVELOAD CURVE NUMBER: “4”
S3 OVERLOAD PROTECTION  THERMAL MODEL  OVERLOAD
PICKUP LEVEL: “1.10”
S3 OVERLOAD PROTECTION  THERMAL MODEL  UNBALANCE BIAS
K FACTOR: “0”
S3 OVERLOAD PROTECTION  THERMAL MODEL  HOT/COLD SAFE
STALL RATIO: “1.00”
S3 OVERLOAD PROTECTION  THERMAL MODEL  ENABLE RTD
BIASING: “No”
2.
Any trip must be reset prior to each test. Short the emergency restart
terminals momentarily immediately prior to each overload curve test to
ensure that the thermal capacity used is zero. Failure to do so will result in
shorter trip times. Inject the current of the proper amplitude to obtain the
values as shown and verify the trip times. Motor load may be viewed in A2
METERING DATA  CURRENT METERING
Thermal capacity used and estimated time to trip may be viewed in A1 STATUS  MOTOR
STATUS
AVERAGE
PHASE
CURRENT
DISPLAYED
INJECTED
CURRENT
1 A UNIT
PICKUP
LEVEL
EXPECTED TIME
TO TRIP
TOLERANCE RANGE
1050 A
1.05 A
1.05
never
N/A
1200 A
1.20 A
1.20
795.44 s
779.53 to 811.35 s
1750 A
1.75 A
1.75
169.66 s
166.27 to 173.05 s
3000 A
3.0 A
3.00
43.73 s
42.86 to 44.60 s
6000 A
6.0 A
6.00
9.99 s
9.79 to 10.19 s
10000 A
10.0 A
10.00
5.55 s
5.44 to 5.66 s
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
MEASURED
TIME TO
TRIP
8–9
ADDITIONAL FUNCTIONAL TESTING
8.3.2
CHAPTER 8: TESTING
Power Measurement Test
The 369 specification for reactive and apparent power is ±1.5% of 2 × CT × VT full scale at
Iavg < 2 × CT. Perform the steps below to verify accuracy.
1.
Alter the following setpoints:
S2 SYSTEM SETUP  CT/VT SETUP  PHASE CT PRIMARY: “1000”
S2 SYSTEM SETUP  CT/VT SETUP  VT CONNECTION TYPE: “Wye”
S2 SYSTEM SETUP  CT/VT SETUP  VT RATIO: “10.00:1”
2.
Inject current and apply voltage as per the table below. Verify accuracy of the
measured values. View the measured values in A2 METERING DATA  POWER
METERING
INJECTED CURRENT / APPLIED VOLTAGE
(Ia is reference vector)
POWER QUANTITY
1 A UNIT
5 A UNIT
EXPECTED
TOLERANCE
RANGE
Ia = 1 A∠0°
Ib = 1 A∠120°
Ic = 1 A∠240°
Va = 120 V∠342°
Vb = 120 V∠102°
Vc = 120 V∠222°
Ia = 5 A∠0°
Ib = 5 A∠120°
Ic = 5 A∠240°
Va = 120 V∠342°
Vb = 120 V∠102°
Vc = 120 V∠222°
+3424 kW
3352 to
3496 kW
0.95 lag
Ia = 1 A∠0°
Ib = 1 A∠120°
Ic = 1 A∠240°
Va = 120 V∠288°
Vb = 120 V∠48°
Vc = 120 V∠168°
Ia = 5 A∠0°
Ib = 5 A∠120°
Ic = 5 A∠240°
Va = 120 V∠288°
Vb = 120 V∠48°
Vc = 120 V∠168°
+3424 kva
r
3352 to
3496 kvar
0.31 lag
8.3.3
POWER FACTOR
MEASURED
EXPECTED
MEASURED
Voltage Phase Reversal Test
The 369 can detect voltage phase rotation and protect against phase reversal. To test the
phase reversal element, perform the following steps:
1.
Alter the following setpoints:
S2 SYSTEM SETUP  CT/VT SETUP  VT CONNECTION TYPE:
“Wye” or “Open Delta”
S7 VOLTAGE ELEMENTS  PHASE REVERSAL  PHASE REVERSAL
TRIP: “On”
S7 VOLTAGE ELEMENTS  PHASE REVERSAL  ASSIGN TRIP RELAYS:
“Trip”
S2 SYSTEM SETUP  CT/VT SETUP  SYSTEM PHASE SEQUENCE: “ABC”
2.
Apply voltages as per the table below. Verify the 369 operation on voltage
phase reversal.
APPLIED VOLTAGE
Va = 120 V∠0°
Vb = 120 V∠120°
Vc = 120 V∠240°
8–10
EXPECTED RESULT
 NO TRIP
 PHASE REVERSAL TRIP
OBSERVED RESULT
 NO TRIP
 PHASE REVERSAL TRIP

369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
CHAPTER 8: TESTING
ADDITIONAL FUNCTIONAL TESTING
APPLIED VOLTAGE
Va = 120 V∠0°
Vb = 120 V∠240°
Vc = 120 V∠120°
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
EXPECTED RESULT
 NO TRIP
 PHASE REVERSAL TRIP
OBSERVED RESULT
 NO TRIP
 PHASE REVERSAL TRIP

8–11
ADDITIONAL FUNCTIONAL TESTING
8.3.4
CHAPTER 8: TESTING
Short Circuit Test
The 369 specification for short circuit timing is +40 ms or ±0.5% of total time. The pickup
accuracy is as per the phase current inputs. Perform the steps below to verify the
performance of the short circuit element.
1.
Alter the following setpoints:
S2 SYSTEM SETUP  CT/VT SETUP  PHASE CT PRIMARY: “1000”
S4 CURRENT ELEMENTS  SHORT CIRCUIT  SHORT CIRCUIT TRIP:
“On”
S4 CURRENT ELEMENTS  SHORT CIRCUIT  ASSIGN TRIP RELAYS:
“Trip”
S4 CURRENT ELEMENTS  SHORT CIRCUIT  SHORT CIRCUIT
PICKUP LEVEL:
“5.0 x CT”
S4 CURRENT ELEMENTS  SHORT CIRCUIT  ADD S/C DELAY: “0”
2.
Inject current as per the table below, resetting the unit after each trip by
pressing the [RESET] key, and verify timing accuracy. Pre-trip values may be
viewed in
A1 STATUS  LAST TRIP DATA
INJECTED CURRENT
8–12
TIME TO TRIP (ms)
5 A UNIT
1 A UNIT
EXPECTED
30 A
6A
< 40 ms
40 A
8A
< 40 ms
50 A
10 A
< 40 ms
MEASURED
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
GE
Digital Energy
369 Motor Management Relay
Appendix A: Revisions
Revisions
A.1
Change Notes
A.1.1
Revision History
Table A–1: Revision History
MANUAL P/N
369 REVISION
RELEASE DATE
1601-0077-B1
53CMB105.000
07 May 1999
1601-0077-B2
53CMB110.000
08 June 1999
1601-0077-B3
53CMB110.000
15 June 1999
1601-0077-B4
53CMB110.000
04 August 1999
1601-0077-B5
53CMB120.000
15 October 1999
1601-0077-B6
53CMB130.000
03 January 2000
1601-0077-B7
53CMB142.000
03 April 2000
1601-0777-B8
53CMB145.000
14 June 2000
1601-0777-B9
53CMB160.000
12 October 2000
1601-0777-BA
53CMB161.000
19 October 2000
1601-0077-BB
53CMB17x.000
09 February 2001
1601-0077-BC
53CMB18x.000
15 June 2001
1601-0077-BD
53CMB19x.000
01 August 2002
1601-0077-BE
53CMB20x.000
01 March 2004
1601-0077-BF
53CMB21x.000
05 November 2004
1601-0077-BG
53CMB22x.000
11 April 2005
1601-0077-BH
53CMB23x.000
19 September 2005
1601-0077-BJ
53CMB24x.000
21 November 2005
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
A–1
CHANGE NOTES
APPENDIX A: REVISIONS
Table A–1: Revision History
MANUAL P/N
369 REVISION
RELEASE DATE
1601-0077-BK
53CMB25x.000
May 15, 2006
1601-0077-BL
53CMC310.000
June 7, 2007
1601-0077-BM
53CMC320.000
February 29, 2008
1601-0077-BN
53CMC320.000
June 6, 2008
1601-0077-BP
53CMC320.000
August 8, 2008
1601-0077-BR
53CMC320.000
Oct ober 17, 2008
1601-0077-BS
53CMC330.000
March 6, 2009
1601-0077-BT
53CMC330.000
March 23, 2010
1601-0077-BU
53CMC340.000
June 23, 2010
1601-0077-BV
53CMC340.000
June 27, 2011
1601-0077-BW
53CMC340.000
May 17, 2012
1601-0077-BX
53CMC360.000
May 17, 2012
1601-0077-BY
53CMC362.000
Dec 3, 2012
1601-0077-BZ
53CMC362.000
June 12, 2013
1601-0077-C1
53CMC362.000
April 30, 2014
1601-0077-C2
53CMC362.000
November 2015
Table A–2: Major Updates for 369-C2
SECTION
CHANGES
New manual revision number: C2
Index
Index updated.
Table A–3: Major Updates for 369-C1
SECTION
CHANGES
New manual revision number: C1
3.3.12
Remote display internal ground wire figure and instructions added.
A.2
Warranty information updated.
Table A–4: Major Updates for 369-BZ
SECTION
CHANGES
New manual revision number: BZ
Chapter 3
A–2
Figures updated:
FIGURE 3-1: Physical Dimensions
FIGURE 3-2: Split Mounting Dimensions
FIGURE 3-9: RTD Inputs
FIGURE 3-11: Hookup / Fail and Non-Failsafe Modes
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
APPENDIX A: REVISIONS
CHANGE NOTES
Table A–5: Major Updates for 369-BY
SECTION
CHANGES
New manual revision number: BY
2.2.3
Table: Change to front panel display characteristics
5.2.2
Change to front panel display characteristics
6.3.3
Change to front panel display characteristics
Table A–6: Major Updates for 369-BV
SECTION
CHANGES
New manual revision number: BV
2.2.4
Fieldbus Loss of Communications - change to DeviceNet timing
accuracy spec
Table A–7: Major Updates for 369-BU
SECTION
CHANGES
New manual revision number: BU
5.2.3
Fieldbus Loss of Communications added
Table A–8: Major Updates for 369-BT
SECTION
CHANGES
New manual revision number: BT
Index
Index corrected and updated
Table A–9: Major Updates for 369-BS
SECTION
CHANGES
New manual revision number: BS
2.2.4
Fieldbus Loss of Comms section added
Table A–10: Major Updates for 369-BR
SECTION
CHANGES
New manual revision number: BR
5.2.3
Note added, re cycling power supply.
7.2.1 (FAQ)
Q/A added, re cycling of power supply.
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
A–3
CHANGE NOTES
APPENDIX A: REVISIONS
Table A–11: Major Updates for 369-BP
SECTION
CHANGES
New manual revision number: BP
5.7.2/5.10.1
Note added, re editing of RTD name and General Switch Name via
EnerVista only.
Table A–12: Major Updates for 369-BN
SECTION
CHANGES
New manual revision number: BN
2.2.8/2.2.11
Add T-Code rating to Specifications/Type Tests.
2.2.10
Add new UL file number to UL Listings.
2.2.2
Update Hazardous Location note.
3.3.3
Add Reboot Time information.
Table A–13: Major Updates for 369-BM
SECTION
CHANGES
New manual revision number: BM
Chapter 9
Chapter 9 - Communications - removed and a separate
Communications Guide created from it.
Chapters 2, 3, 5, 6 2-speed motor feature added
A–4
Chapters 5, 6,
Comm Guide
Datalogger feature added
Chapter 3
New Forward/Reverse wiring diagram added
Chapter 2
Update Control Power specs.
5.3.5
Latched trip and alarm note added
6.6.1
Motor Speed and Hottest Stator display information added/changed
4.6.4
Motor Start Data Logger changes
4.6.5
Motor Health Report changes
5.2.3
Profibus Loss of Communication display change
5.7.4
Phase Reversal info changes, new diagram added
6.3.9
Phasor information changes
Chapter 5
MMI Display hiding changes
5.7.4
Phase Reversal description changes
6.2.2
Speed of Last Trip MMI display added
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
APPENDIX A: REVISIONS
CHANGE NOTES
Table A–14: Major Updates for 369-BL
CHANGES
Added new UL and CSA information
Deleted MOD 502 hazardous location option
Fig. 3.3.10 - Clarified that resistance is per-lead, and not total resistance
Firmware revision to 3.10
Increase number of event records from 250 to 512
New feature added: Undervoltage Autorestart
New feature added: Motor Start Data Logger
New feature added: Enhanced Motor Learned Data
New feature added: Detect If 369 Is Communicating With RRTDs
New feature added: New Order Code Item For "MMI Display Style"
New feature added: DeviceNet Poll Data Groups
Table A–15: Major Updates for 369-BK
CHANGES
Added new START CONTROL RELAY TIMER setpoint under the Reduced Voltage Starting
menu
Added new Modbus register for “Starts Per Hour Lockout Time” at address 0x02CA
Section 5.10.5: SPEED SWITCH modified to reflect the correct front panel display order
Table in section 8.2.3 updated to reflect correct ground fault CT range
Broadcast date and time in Modbus address corrected (0x00F0 and 0x00F2)
DeviceNet Assembly object, class code 04h, instance 68h, attribute 03 access type
corrected to “GET”
Added ODVA DeviceNet CONFORMANCE TESTED™ certification to technical
specifications
Updated section 2.2.10: TYPE TEST STANDARDS to reflect updates to IEC and EN test
numbers
Table A–16: Major Updates for 369-BJ
CHANGES
Updated custom curve ranges from “0 to 32767 s” to “0 to 65534 s”
Table A–17: Major Updates for 369-BH
CHANGES
Updated manual for the Profibus-DPV1 option
Added BLOCK PROTECTION FUNCTIONS and FORCE OUTPUT RELAYS sections
Added communications sections of Chapter 9
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
A–5
CHANGE NOTES
APPENDIX A: REVISIONS
Table A–18: Major Updates for 369-BG
CHANGES
Updated the 369 order code for the Harsh Environment option
Added setpoints for DeviceNet communications and Starter Operation Monitor
Added DeviceNet communications section to Chapter 9
Table A–19: Major Updates for 369-BF
CHANGES
Changes made to Modbus/TCP interface
Additions for variable frequency functionality
Table A–20: Major Updates for 369-BE
CHANGES
Added MOTOR LOAD AVERAGING INTERVAL setpoint to the Thermal Model feature.
Added starter failure and energy metering to analog output parameters
Table A–21: Major Updates for 369-BD
CHANGES
Added DEFAULT TO HOTTEST STATOR RTD TEMP setpoint to default messages.
Updated Section 5.3.7: AUTORESTART and Figure 5–5: AUTORESTART LOGIC.
Updated EVENT RECORDER section to reflect 250 events
Added EVENT RECORDS setpoints to S1 369 SETUP section.
Added Filter/Safety Ground question to Section 7.2.1: FREQUENTLY ASKED QUESTIONS.
Updated MEMORY MAP and MEMORY MAP FORMATS tables.
Table A–22: Major Updates for 369-BC
CHANGES
Updated ORDERING TABLE to reflect Modbus/TCP option
Updated Figure 1–1: FRONT AND REAR VIEW to 840702BF
Updated Figure 3–4: TYPICAL WIRING
Added new Modbus/TCP setpoints and description in Section 5.2.4: COMMUNICATIONS
Updated Figures 5–3 and 5–4, REDUCED VOLTAGE STARTER AUXILIARY INPUTS
Updated Section 7.2.4: CT SELECTION to fix errors in the application example
Updated Figure 8–1: SECONDARY INJECTION TEST SETUP
Updated Table 9–1: SETPOINTS TABLE to include new Modbus/TCP setpoints
Updated MEMORY MAP and MEMORY MAP FORMATS to include new Modbus/TCP
setpoints
A–6
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
APPENDIX A: REVISIONS
CHANGE NOTES
Table A–23: Major Updates for 369-BB
CHANGES
Updated Figure 1–1: FRONT AND REAR VIEW
Corrected errors in Table 3–1: TERMINAL LIST
Updated Figure 3–4: TYPICAL WIRING
Removed SINGLE VT WYE/DELTA connection diagram in Chapter 3 (feature no longer
supported)
Removed ENABLE SINGLE VT OPERATION setpoint from Section 5.3.2: CT/VT SETUP
(feature no longer supported)
Added new Section 5.3.7: AUTORESTART
Table A–24: Major Updates for 369-BA
CHANGES
There were no changes to the content of the manual for this release.
Table A–25: Major Updates for 369-B9
CHANGES
Updated Figure 3-4: TYPICAL WIRING
Updated Figure 3-15: REMOTE RTD MODULE
Added menu item PROFIBUS ADDRESS to the 369 Setup Communications menu
Added menu item CLEAR ENERGY DATA to the 369 Setup Clear/Preset Data menu
Added Section 10.2: PROFIBUS PROTOCOL to Communications chapter
Table A–26: Major Updates for 369-B8
CHANGES
Firmware version 53CMB145.000 contains only minor software changes that do not
affect the functionality of the 369 or the 1601-0777-B8 manual contents.
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
A–7
WARRANTY
A.2
APPENDIX A: REVISIONS
Warranty
A.2.1
Warranty Information
For products shipped as of 1 October 2013, GE Digital Energy warrants most of its GE
manufactured products for 10 years. For warranty details including any limitations and
disclaimers, see the GE Digital Energy Terms and Conditions at:
https://www.gedigitalenergy.com/multilin/warranty.htm
For products shipped before 1 October 2013, the standard 24-month warranty described
below applies.
GE MULTILIN RELAY WARRANTY
General Electric Multilin (GE Multilin) warrants each relay it manufactures to
be free from defects in material and workmanship under normal use and
service for a period of 24 months from date of shipment from factory.
In the event of a failure covered by warranty, GE Multilin will undertake to
repair or replace the relay providing the warrantor determined that it is
defective and it is returned with all transportation charges prepaid to an
authorized service centre or the factory. Repairs or replacement under
warranty will be made without charge.
Warranty shall not apply to any relay which has been subject to misuse,
negligence, accident, incorrect installation or use not in accordance with
instructions nor any unit that has been altered outside a GE Multilin
authorized factory outlet.
GE Multilin is not liable for special, indirect or consequential damages or for
loss of profit or for expenses sustained as a result of a relay malfunction,
incorrect application or adjustment.
For complete text of Warranty (including limitations and disclaimers), refer to
GE Multilin Standard Conditions of Sale.
A–8
369 MOTOR MANAGEMENT RELAY– INSTRUCTION MANUAL
GE
Digital Energy
369 Motor Management Relay
Index
Index
Numerics
2 PHASE CT CONFIGURATION ........................................................................ 7-26
269-369 CONVERSION TERMINAL LIST ...........................................................3-5
369
pc interface .......................................................................................................4-3
5A
ground CT installation ................................................................................... 3-28
input ..................................................................................................................8-3
86 LOCKOUT SWITCH ........................................................................................7-8
A
A1 STATUS ..........................................................................................................6-3
A2 METERING DATA ...........................................................................................6-7
A3 LEARNED DATA ........................................................................................... 6-13
A4 STATISTICAL DATA ..................................................................................... 6-16
A5 EVENT RECORD .......................................................................................... 6-18
A6 RELAY INFORMATION ................................................................................ 6-20
ACCELERATION TRIP ............................................................................... 5-54 , 7-16
ACCESS SECURITY .............................................................................................5-4
ACCESS SWITCH .............................................................................................. 5-78
ACCESSORIES .....................................................................................................1-3
ACTUAL VALUES ................................................................................................6-1
main menu ........................................................................................................6-1
overview ............................................................................................................6-1
page 6 menu ................................................................................................... 6-20
ADDITIONAL FEATURES ....................................................................................2-4
ADDITIONAL FUNCTIONAL TING ......................................................................8-8
ALARM RELAY
setpoints ......................................................................................................... 5-24
ALARM STATUS ..................................................................................................6-5
ANALOG
inputs and outputs ...........................................................................................8-7
369 MOTOR MANAGEMENT RELAY – INSTRUCTION MANUAL
INDEX–I
INDEX: INDEX
outputs ...........................................................................................3-16 , 3-17 , 5-80
outputs (Option M) ........................................................................................... 2-7
APPROVALS / CERTIFICATION ........................................................................ 2-15
AUTO TRANSFORMER STARTER WIRING ....................................................... 7-31
AUTORESTART .................................................................................5-28, 5-30 , 5-31
AUX 1 RELAY
see AUXILIARY RELAYS
AUX 2 RELAY
see AUXILIARY RELAYS
AUXILIARY RELAYS
setpoints ......................................................................................................... 5-24
B
BACK PORTS (3) .................................................................................................. 2-9
BACKSPIN
detection ......................................................................................................... 5-56
voltage inputs ................................................................................................. 3-15
BEARING RTDS ................................................................................................. 7-17
BSD INPUTS (OPTION B) .................................................................................... 2-7
C
CLEAR/PRESET DATA ....................................................................................... 5-14
COMMUNICATIONS ........................................................................................... 2-9
control ............................................................................................................. 5-26
Modbus/TCP ..................................................................................................... 5-7
RS232 ........................................................................................................ 4-6, 4-8
RS485 ........................................................................................................ 4-6, 4-8
CONTROL
functions ......................................................................................................... 5-25
power ..................................................................................................... 3-12 , 3-19
COOL TIME CONSTANTS ................................................................................. 7-18
CORE BALANCE CONNECTION ......................................................................... 7-3
CT
burden ............................................................................................................. 7-10
circuit .............................................................................................................. 7-11
ground CT primary ......................................................................................... 5-16
phase CT primary .......................................................................................... 5-16
secondary resistance ..................................................................................... 7-10
selection ........................................................................................................... 7-9
setpoints ......................................................................................................... 5-16
size and saturation .......................................................................................... 7-9
withstand .......................................................................................................... 7-8
CT AND VT
polarity .............................................................................................................. 7-5
CT/VT SETUP .................................................................................................... 5-16
CURRENT
metering ............................................................................................................ 6-8
unbalance ....................................................................................................... 5-50
CURRENT DEMAND ................................................................................. 5-20 , 5-21
CURRENT TRANSFORMER
see CT
CUSTOM OVERLOAD CURVE ........................................................................... 5-41
INDEX–II
369 MOTOR MANAGEMENT RELAY – INSTRUCTION MANUAL
INDEX: INDEX
D
DATE ....................................................................................................................5-9
DEFAULT MESSAGES
cycle time ..........................................................................................................5-5
setpoints ......................................................................................................... 5-13
timeout ..............................................................................................................5-5
DEMAND
calculation ...................................................................................................... 5-21
metering .......................................................................................................... 6-11
setpoints ................................................................................................ 5-20 , 5-21
DEVICENET
settings ...................................................................................................... 5-7, 5-8
specifications ....................................................................................................2-9
DIAGNOSTIC MESSAGES ...................................................................................6-5
DIELECTRIC STRENGTH ................................................................................... 2-16
DIFFERENTIAL SWITCH ................................................................................... 5-78
Digital .................................................................................................................8-6
DIGITAL COUNTER ........................................................................................... 5-76
DIGITAL INPUT ...................................................................................................7-8
status ................................................................................................................6-6
DIGITAL INPUT FUNCTION
digital counter ................................................................................................. 5-76
general switch ................................................................................................ 5-75
waveform capture ........................................................................................... 5-76
DISPLAY ..............................................................................................................4-1
preferences .......................................................................................................5-5
DO’S AND DON’TS .............................................................................................7-5
DUST/MOISTURE ..................................................................................... 2-14 , 2-16
E
ELECTRICAL INSTALLATION ............................................................................ 3-10
EMERGENCY RESTART ..................................................................................... 5-78
ENABLE
start inhibit ...................................................................................................... 7-16
ENERVISTA VIEWPOINT WITH THE 369 ......................................................... 4-42
ENVIRONMENATAL SPECIFICATIONS ............................................................. 2-14
ETHERNET
specifications ....................................................................................................2-9
F
FACEPLATE
interface ............................................................................................................4-1
FACTORY DATA ................................................................................................ 5-15
FAQ ......................................................................................................................7-2
FIBER OPTIC PORT (OPTION F) .........................................................................2-9
FIRMWARE
history ...............................................................................................................1-3
upgrading via EnerVista 369 setup software ............................................... 4-26
version ............................................................................................................ 6-20
FLA .................................................................................................................... 5-16
FLASH MESSAGES
369 MOTOR MANAGEMENT RELAY – INSTRUCTION MANUAL
INDEX–III
INDEX: INDEX
duration ............................................................................................................. 5-5
FORCE OUTPUT RELAYS
settings ........................................................................................................... 5-33
FREQUENCY ...................................................................................................... 5-17
FREQUENTLY ASKED QUESTIONS .................................................................... 7-2
FRONT PORT ....................................................................................................... 2-9
communicating ................................................................................................. 7-2
FULL LOAD AMPS ............................................................................................ 5-16
G
GATEWAY ADDRESS .......................................................................................... 5-7
GENERAL SWITCH ........................................................................................... 5-75
GROUND
(1A/5A) ACCURACY TEST ............................................................................. 8-3
accuracy test .................................................................................................... 8-4
bus .................................................................................................................... 7-6
CT ........................................................................................................... 5-16 , 7-12
current input ................................................................................................... 3-13
fault ........................................................................................................ 5-51 , 7-16
fault detection
ungrounded systems ........................................7-28
filter ................................................................................................................... 7-6
safety ................................................................................................................ 7-6
GUIDEFORM SPECIFICATIONS .......................................................................... 2-1
H
HARDWARE FUNCTIONAL TESTING ................................................................. 8-2
HGF GROUND CT INSTALLATION
3” and 5” window ............................................................................................ 3-29
8” window ....................................................................................................... 3-29
HOT/COLD CURVE RATIO ....................................................................... 5-44 , 7-14
HOT/COLD SAFE STALL RATIO ....................................................................... 5-36
I
IED SETUP ........................................................................................................... 4-4
INPUTS ................................................................................................................ 2-5
INSTALLATION .................................................................................................... 3-1
electrical ......................................................................................................... 3-10
mechanical ....................................................................................................... 3-1
upgrade ............................................................................................................. 4-3
INTRODUCTION AND ORDERING ..................................................................... 1-1
IP ADDRESS ........................................................................................................ 5-7
K
KEYPAD ............................................................................................................... 4-2
L
LAG POWER FACTOR ....................................................................................... 5-70
INDEX–IV
369 MOTOR MANAGEMENT RELAY – INSTRUCTION MANUAL
INDEX: INDEX
LAST TRIP DATA .................................................................................................6-4
LEAD POWER FACTOR ..................................................................................... 5-70
LEARNED START CAPACITY ............................................................................. 7-25
LOCAL / REMOTE RTD OPERATION ................................................................ 5-60
LOCAL RTD ....................................................................................................... 6-10
maximums ....................................................................................................... 6-15
protection ........................................................................................................ 5-57
LONG-TERM STORAGE .................................................................................... 2-15
M
MECHANICAL INSTALLATION ...........................................................................3-1
MECHANICAL JAM .................................................................................. 5-48 , 7-15
MESSAGE SCRATCHPAD .................................................................................. 5-12
METERED QUANTITIES ......................................................................................2-2
METERING ...........................................................................................................2-8
MODBUS
serial communications control ...................................................................... 5-26
setpoints .................................................................................................... 5-6, 5-8
MODBUS/TCP COMMUNICATIONS ...................................................................5-7
MODEL INFORMATION .................................................................................... 6-20
MODIFY OPTIONS ............................................................................................ 5-15
MONITORING SETUP ........................................................................................ 5-18
MOTOR
cooling ............................................................................................................. 5-44
data ................................................................................................................. 6-14
FLA .................................................................................................................. 5-16
FLC .................................................................................................................. 7-12
rated voltage ................................................................................................... 5-16
statistics .......................................................................................................... 6-18
status ......................................................................................................... 6-3, 6-5
status detection .............................................................................................. 7-17
thermal limits .................................................................................................. 7-12
MOTOR FLA ....................................................................................................... 5-16
MPM-369
conversion terminal list ....................................................................................3-9
MTM-369
conversion terminal list ....................................................................................3-8
N
NEGATIVE REACTIVE POWER .......................................................................... 5-72
NOMINAL FREQUENCY .................................................................................... 5-17
O
OPEN RTD ALARM ............................................................................................ 5-61
OPERATION ....................................................................................................... 5-25
OPTIONS, MODIFYING ..................................................................................... 5-15
ORDERING ..........................................................................................................1-2
OUTPUT RELAYS ................................................................................. 2-7, 3-19 , 8-8
forcing ............................................................................................................. 5-33
setpoints ................................................................................................ 5-23 , 5-24
OUTPUTS .............................................................................................................2-7
369 MOTOR MANAGEMENT RELAY – INSTRUCTION MANUAL
INDEX–V
INDEX: INDEX
OVERFREQUENCY ............................................................................................ 5-68
OVERLOAD
alarm ............................................................................................................... 5-47
curve ............................................................................................................... 7-15
curve test .......................................................................................................... 8-9
pickup .............................................................................................................. 7-14
OVERLOAD CURVES
custom ............................................................................................................ 5-41
setpoints ........................................................................................5-37 , 5-38 , 5-86
standard .........................................................................................5-38 , 5-39 , 5-40
OVERLOAD/STALL/THERMAL MODEL ............................................................ 2-10
OVERVOLTAGE ................................................................................................. 5-64
P
PARITY ................................................................................................................. 5-6
PASSWORDS
comm password ............................................................................................... 5-4
PC PROGRAM
software history ................................................................................................ 1-4
PC SOFTWARE
obtaining ........................................................................................................... 7-2
PHASE
CT ........................................................................................................... 5-16 , 7-12
CT installation ................................................................................................ 3-26
current (CT) inputs ......................................................................................... 3-12
current accuracy test ....................................................................................... 8-2
line voltage input, VT (Option M) .................................................................... 2-6
reversal ........................................................................................................... 5-65
voltage (VT/PT) inputs ................................................................................... 3-14
VT .................................................................................................................... 5-17
PHASE SEQUENCY ........................................................................................... 5-18
PHASORS .......................................................................................................... 6-12
POLARITY
CT and VT ........................................................................................................ 7-5
POSITIVE REACTIVE POWER ........................................................................... 5-71
POWER
measurement test .......................................................................................... 8-10
metering ............................................................................................................ 6-9
metering (option m) ......................................................................................... 2-8
POWER DEMAND ............................................................................................. 5-21
PRODUCTION TESTS ........................................................................................ 2-16
PROFIBUS
setpoints ........................................................................................................... 5-8
PROFIBUS ADDRESS .......................................................................................... 5-7
PROFIBUS PORT (OPTION P) ............................................................................. 2-9
PROGRAMMING EXAMPLE .............................................................................. 7-11
PROTECTION ELEMENTS ................................................................................. 2-10
R
REAL TIME CLOCK .............................................................................................. 6-7
setpoints ........................................................................................................... 5-9
REDUCED RTD LEAD NUMBER ....................................................................... 7-29
REDUCED VOLTAGE START .................................................................... 5-26 , 5-28
INDEX–VI
369 MOTOR MANAGEMENT RELAY – INSTRUCTION MANUAL
INDEX: INDEX
RELAY LABEL DEFINITION .................................................................................1-8
REMOTE RESET ................................................................................................. 5-80
REMOTE RTD .................................................................................................... 6-10
address .............................................................................................................5-7
maximums ....................................................................................................... 6-16
module electrical installation ......................................................................... 3-26
module mechanical installation ..................................................................... 3-24
protection ........................................................................................................ 5-59
RESET ................................................................................................................ 5-24
RESIDUAL GROUND FAULT CONNECTION ......................................................7-3
REVERSE POWER ............................................................................................. 5-74
REVISION HISTORY ........................................................................................... A-1
ROLLING DEMAND WINDOW ......................................................................... 5-21
RRTD ADDRESS ..................................................................................................5-7
RS232
communicating .................................................................................................7-2
program port .....................................................................................................4-2
setpoints ...........................................................................................................5-6
RS232 COMMUNICATIONS
configuring with EnerVista 369 Setup ............................................................4-6
configuring with EnerVista 369 setup .............................................................4-8
RS485
4 wire ................................................................................................................7-3
cable ..................................................................................................................7-7
communication difficulties ...............................................................................7-3
communications ............................................................................................. 3-19
communications port ........................................................................................7-6
converter ...........................................................................................................7-6
distances ...........................................................................................................7-7
full duplex .........................................................................................................7-3
interfacing master device ................................................................................7-7
repeater ............................................................................................................7-7
setpoints ...........................................................................................................5-6
RS485 COMMUNICATIONS
configuring with EnerVista 369 setup ...................................................... 4-6 , 4-8
RTD ............................................................................................................. 3-16, 7-6
2 wire lead compensation .............................................................................. 7-31
accuracy test ....................................................................................................8-5
bias .................................................................................................5-36, 5-45 , 5-46
bias maximum ................................................................................................ 7-15
bias mid point ................................................................................................. 7-15
bias minimum ................................................................................................. 7-15
circuitry ........................................................................................................... 7-29
grounding ..........................................................................................................7-8
inputs .............................................................................................................. 3-16
inputs (Option r) ...............................................................................................2-7
stator ............................................................................................................... 7-16
RUNNING COOL TIME ...................................................................................... 7-14
S
S10 ANALOG OUTPUTS ................................................................................... 5-80
S11 369 TESTING ............................................................................................. 5-83
S2 SYSTEM SETUP ............................................................................................ 5-15
S3 OVERLOAD PROTECTION ........................................................................... 5-34
S4 CURRENT ELEMENTS .................................................................................. 5-47
369 MOTOR MANAGEMENT RELAY – INSTRUCTION MANUAL
INDEX–VII
INDEX: INDEX
S5 MOTOR START / INHIBITS .......................................................................... 5-53
S6 RTD TEMPERATURE .................................................................................... 5-57
S7 VOLTAGE ELEMENTS .................................................................................. 5-63
S8 POWER ELEMENTS ..................................................................................... 5-68
S9 DIGITAL INPUTS .......................................................................................... 5-74
SECONDARY INJECTION TEST SETUP .............................................................. 8-2
SECURITY ............................................................................................................ 5-4
SELF-TEST MODE ............................................................................................. 5-23
SELF-TEST RELAY ............................................................................................. 5-23
SERIAL COMMUNICATION CONTROL ............................................................. 5-26
SETPOINTS .......................................................................................................... 5-1
access ............................................................................................................... 5-4
entering with EnerVista 369 Setup software ................................................ 4-12
entry .................................................................................................................. 4-3
loading from a file .......................................................................................... 4-25
main menu ........................................................................................................ 5-1
page 1 menu ..................................................................................................... 5-4
saving to a file ................................................................................................ 4-26
SHORT CIRCUIT ................................................................................................ 5-47
test .................................................................................................................. 8-12
trip ................................................................................................................... 7-15
SHORT/LOW TEMP RTD ALARM ..................................................................... 5-62
SOFTWARE
entering setpoints .......................................................................................... 4-12
installation ........................................................................................................ 4-3
loading setpoints ............................................................................................ 4-25
saving setpoints ............................................................................................. 4-26
serial communications .............................................................................. 4-6 , 4-8
SPARE SWITCH ................................................................................................. 5-77
SPEED SWITCH ................................................................................................. 5-79
START INHIBIT .................................................................................5-55, 7-19 , 7-24
enabled ........................................................................................................... 7-25
starter
status switch ................................................................................................... 5-27
STARTER FAILURE ............................................................................................ 5-20
STARTS/HOUR .................................................................................................. 7-16
STATOR RTDS ................................................................................................... 7-16
STOPPED COOL TIME ...................................................................................... 7-15
STOPPED COOL TIME CONSTANT .................................................................. 7-19
SUBNET MASK .................................................................................................... 5-7
SYSTEM ............................................................................................................. 5-17
SYSTEM FREQUENCY ....................................................................................... 5-17
T
TECHNICAL SPECIFICATIONS ........................................................................... 2-5
TEMPERATURE DISPLAY .................................................................................... 5-5
TERMINAL
identification ..................................................................................................... 3-2
layout .............................................................................................................. 3-10
list ...................................................................................................................... 3-3
TEST
burn in ............................................................................................................. 2-16
calibration and functionality .......................................................................... 2-16
dielectric strength .......................................................................................... 2-16
INDEX–VIII
369 MOTOR MANAGEMENT RELAY – INSTRUCTION MANUAL
INDEX: INDEX
ground accuracy ...............................................................................................8-4
hardware functional .........................................................................................8-2
input accuracy ..................................................................................................8-3
overload curve ..................................................................................................8-9
phase current accuracy ...................................................................................8-2
power measurement ...................................................................................... 8-10
production ....................................................................................................... 2-16
RTD accuracy ...................................................................................................8-5
secondary injection ..........................................................................................8-2
setup .................................................................................................................8-1
short circuit ..................................................................................................... 8-12
type test standards ........................................................................................ 2-16
unbalance ....................................................................................................... 8-10
voltage
metering ......................................................... 6-8
phase reversal ................................................8-10
TESTING
analog outputs ................................................................................................ 5-84
output relays ................................................................................................... 5-83
setpoints ......................................................................................................... 5-83
THERMAL
capacity calculation ....................................................................................... 7-22
capacity used ................................................................................................. 7-22
limit .................................................................................................................. 7-19
limit curves ..................................................................................................... 7-24
THERMAL CAPACITY USED .............................................................................. 5-36
THERMAL MODEL
cooling ............................................................................................................. 5-45
description ...................................................................................................... 5-35
limit curves ..................................................................................................... 5-35
setpoints ......................................................................................................... 5-35
TIME .....................................................................................................................5-9
TIME BETWEEN STARTS .................................................................................. 7-16
TRENDING ......................................................................................................... 4-28
TRIP COUNTER ................................................................................5-19, 6-10 , 6-16
TRIP RELAY ....................................................................................................... 3-19
setpoints ......................................................................................................... 5-24
TWO PHASE WIRING ....................................................................................... 7-26
TWO WIRE RTD LEAD COMPENSATION ......................................................... 7-31
TYPE TEST STANDARDS ................................................................................... 2-16
U
UNBALANCE
alarm and trip ................................................................................................. 7-16
bias .................................................................................................................. 5-42
bias k factor .................................................................................................... 7-14
bias of thermal capacity ................................................................................ 7-14
setpoints ......................................................................................................... 5-35
test .................................................................................................................. 8-10
UNDERCURRENT ..................................................................................... 5-49 , 7-16
UNDERFREQUENCY ......................................................................................... 5-67
UNDERPOWER .................................................................................................. 5-73
UNDERVOLTAGE .............................................................................................. 5-63
UPGRADING FIRMWARE .................................................................................. 4-26
369 MOTOR MANAGEMENT RELAY – INSTRUCTION MANUAL
INDEX–IX
V
VIBRATION ........................................................................................................ 2-15
VOLTAGE
input accuracy test ........................................................................................... 8-3
metering ............................................................................................................ 6-8
phase reversal test ........................................................................................ 8-10
VOLTAGE TRANSFORMER
see VT
VT
connection type .............................................................................................. 5-17
ratio ................................................................................................................. 5-17
VT RATIO .................................................................................................. 5-16, 5-17
VT SETTINGS .................................................................................................... 7-13
W
WARRANTY ........................................................................................................ A-8
WAVEFORM CAPTURE ......................................................................2-8 , 5-10 , 5-76
setpoints ................................................................................................ 5-10 , 5-12
WIRING DIAGRAM ............................................................................................ 3-10
Z
ZERO SEQUENCE
ground CT placement .................................................................................... 3-14
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