3DWA 300 3DWA 300 - Electro Industries/GaugeTech

3DWA 300 3DWA 300 - Electro Industries/GaugeTech
User
Manual
3DWA 300
300
3DWA
• Installation
• Operation
• Programming
¯ Solid State Digital Triple Display
Power Monitoring Systems - Watts,
VARS, VA, and PF
3DWA 300
Electro Industries/GaugeTech
1800 Shames Drive•Westbury, New York 11590
Tel 516.334.0870•Fax 516.338.4741• www.electroind.com
Electro Industries/GaugeTech
The 3DWA300
Triple Display Digital Power Monitoring System
Installation, Operation
and Programming Manual
Document# E104766 Version 4.0/12-17-2008
1800 Shames Drive
Westbury, New York 11590
Tel: (516) 334-0870 z Email: [email protected]
Fax: (516) 338-4741 z Website: www.electroind.com
Electro Industries/GaugeTech
1800 Shames Drive
Westbury, New York 11590 U. S. A
For Customer or Technical Assistance, Repair and Calibration:
Phone: (516) 334-0870 Fax (516) 338-4741
Customer support is available 9:00 A.M. to 4:30 P.M., Eastern Time, Monday through Friday. Please have
the model, serial number and a detailed problem description available. If the problem concerns a particular
reading, please have all meter readings available. When returning any merchandise to E.I.G., a return
authorization number is required.
PRODUCT
WARRANTY
Electro Industries/GaugeTech warrants this product to be free from defects in material
and workmanship for a period of 4 years from date of shipment. During the warranty
period, we will, at our option, either repair or replace any product that proves to be
defective.
To exercise this warranty, fax or call our customer service department. You will
receive prompt assistance and return instructions. Send the instrument, transportation
prepaid, to the address above. Repairs will be made and the instrument will be
returned.
LIMITATION
OF
WARRANTY
This warranty does not apply to defects resulting from unauthorized modification,
misuse or use for any reason other than electrical power monitoring. This unit is not to
be used for primary over current protection. Any protection feature in this unit is to be
used for alarm or secondary protection only.
This warranty is in lieu of all other warranties, expressed or implied, including
any implied warranty of merchantability or fitness for a particular purpose.
Electro Industries/GaugeTech shall not be liable for any indirect, special or
consequential damages arising from any authorized or unauthorized use of any
Electro Industries/GaugeTech product.
STATEMENT
OF
CALIBRATION
This instrument has been inspected and tested in accordance with specifications
published by Electro Industries/GaugeTech. The accuracy and calibration of this
instrument are traceable to the National Bureau of Standards through equipment that is
calibrated at planned intervals by comparison to certified standards.
DISCLAIMER
Information presented in this publication has been carefully checked for reliability;
however, no responsibility is assumed for inaccuracies. The information contained in
this document is subject to change without notice.
No part of this manual may be reproduced or transmitted in any form or by any means,
electronic or mechanical, including photocopying, recording, or information storage or
retrieval systems or any future forms of duplication, for any purpose other than the
purchaser's use, without the expressed written permission of Electro
Industries/GaugeTech.
©2008 Electro Industries/GaugeTech. All rights reserved. Printed in the United States of America.
COPYRIGHT
Table of Contents
PART I: INSTALLATION & OPERATION
Chapter 1
AC Power Measurement 1
1.1 Single Phase System 1
1.2 Three-Phase System 2
1.3 Consumption, Demand and Poor Power Factor 3
1.4 Waveform and Harmonics 4
Chapter 2
Mechanical Installation 5
2.1 Explanation of Symbols 5
2.2 Mechanical Installation 5
Chapter 3
Electrical Installation 9
3.1 Important Considerations When Installing Meters 9
3.1.1: Measurement Inputs Rating 10
3.2 Connecting the Current Circuit 10
3.3 CT Connection 11
3.4 Connecting the Voltage Circuit 11
3.5 Selecting the Voltage Fuses 11
3.6 Connection to the Main Power Supply 12
3.7 Electrical Connection Installation 12
3.8 Relays and Protection 16
Chapter 4
Communication Installation 19
4.1 RS232C 19
4.2 RS485 19
4.3 Network of Instruments and Long Distance Communication 24
Chapter 5
3DWA300 Overview 27
5.1
5.2
5.3
5.4
5.5
5.6
5.7
Accessing Max/Min Values 27
Resetting Max/Min Values 28
Accessing LM1/LM2 Set Limits 29
Access Modes 29
Print Operating Data 30
Print Programming Data 30
Firmware Version/LED Test 31
PART II: PROGRAMMING
Chapter 6
Programming Overview 33
6.1
6.2
6.3
6.4
6.5
6.6
Chapter 7
General Procedure 33
Password Entry 34
Programming Groups and Functions 35
Data Entry 36
Exiting Programming Mode 36
Checksum Error—Protective Mechanism 36
Programming Group 0—Global Meter Setup 37
7.1
7.2
7.3
7.4
7.5
Group 0, Function 0—Integration Interval 37
Group 0, Function 1—Meter Address 38
Group 0, Function 2—Communication Baud Rate 39
Group 0, Function 3—System Configuration 41
Group 0, Functions 4–5—Time Delay for Relays 1 and 2 43
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Table of Contents
Chapter 8
Programming Group 1—Volt, Amp and WATT Scale Settings 45
8.1 Group 1, Function 0–1—Full Scale Settings and Decimal Point Placement
for Volt and Amp Channels 45
8.2 Group 1, Function 2—Scale Selection and Decimal Point Placement for
Kilowatts/Megawatts 47
Chapter 9
Programming Group 2—Meter Calibration 51
9.1 Calibration Requirements 51
9.2 Group 2, Functions 0–8—High End Calibration of Voltage Channels, High
and Low End Calibration of Amperage Channels 52
Chapter 10 Programming Group 5—Set Limits and Relays 55
10.1 Trip Relay 55
10.2 Time Delays and Relay Mode 55
10.3 Group 5, Functions 0–7—LM1/LM2 Set Limits 56
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Table of Contents
Part I: Installation & Operation
CHAPTER 1
AC POWER MEASUREMENT
The economics of electric power distribution networking dictate several configurations of AC power
transmission. The number of phases and voltage levels characterize these configurations.
1.1: Single Phase System
SINGLE PHASE SYSTEM: A basic two-wire system used in low power distribution applications, such as
residential communities or offices. Typically, the voltage is 120V AC. For higher power requirements,
such as residential houses or small commercial facilities, the typical power configuration is two lines of
120V AC opposite in phase (see Figure 1.1 B, below).
This system produces 120 volts from line to neutral for lighting and small appliance use. The line to line
voltage is 240V AC, used for higher loads such as water heaters, electric dryers, ranges, and machinery.
Line
A)
Single Phase
2 Wires
Neutral
Line 1
B)
Single Phase
3 Wires
Neutral
Line 2
Figure 1.1: Single Phase System: (A) Two Wire, (B) Three Wire
The power (W) in a single phase system is: W = E • I • cosΘ
E = potential, I = current, and cosΘ = phase difference between the potential and the current.
Power in a 120/240V AC system is:
W = (ELine 1 • ILine 1 • cosΘ) + (ELine 2 • ILine 2 • cosΘ)
Phase differential between the potential and the current results from a non-resistive load, either reactive
or capacitive.
Reactive power (VAR): The additional power consumed that does not produce any work but must be
delivered to the load: VAR = E ⋅ I ⋅ sinΘ . This is a measure of the inefficiency of the electrical system.
Apparent power (VA): The total power delivered to the load, and the vector sum of real power and
reactive power.
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Chapter 1: AC Power Measurement
3DWA300
Power Factor (PF): The ratio between real power and apparent power: PF =
W
=
VA
W
W 2 + VAR 2
Reactive
Power
(VAR)
Apparent Power (VA)
Real Power (W)
Figure 1.2: Apparent, Real and Reactive power
Ideal power distribution should have a PF of 1. This condition can be met only if no reactive power
loads exist. In real life applications, many loads are inductive loads. Often, corrective capacitors are
installed to correct Poor Power Factor.
1.2: Three-Phase System
A three-phase system delivers higher levels of power for industrial and commercial applications; the
three phases correspond to three potential lines. A 120° phase shift exists between the three potential
lines.
A typical configuration has either a Delta connection or a Wye connection (see Figure 1.3, below).
In a three phase system, the voltage levels between the phases and the neutral are uniform and defined
by: E = E = E = Eab = Ebc = Eac
an
bn
cn
3
3
3
A
1) Delta
B
C
B
A
2) Wye
N
C
Figure 1.3: Three-Phase System: (1) Delta, (2) Wye
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3DWA300
Chapter 1: AC Power Measurement
Voltages between the phases vary depending on loading factors and the quality of distribution
transformers. The three phase system is distributed in different voltage levels: 208V AC, 480V AC, 2400V
AC, 4160V AC, 6900V AC, 13800V AC, and so on.
Power measurement in a poly phase system is governed by Blondel's Theorem. Blondel’s Theorem
states that in a power distribution network that has N conductors, the number of measurement elements
required to determine power is N-1. A typical configuration of poly phase system has either a Delta
connection or a Wye connection (see Figure 1.4, below).
A
X
1) Delta
EAB IA
P = EAB IA + ECB I C
B
C
X
ECB I C
X
EAN I A
X
EBN I B
B
A
2) Wye
N
P=E
AN
X
C
IA + EBN IB + ECN I C
ECN I C
Figure 1.4: Poly Phase System: (1) Delta, (2) Wye
1.3: Consumption, Demand and Poor Power Factor
CONSUMPTION: WH = W · T W = instantaneous power T = time in hours
The total electric energy usage over a time period is the consumption WH.
Typically, the unit in which consumption is specified is the kilowatt-hour (KWH): one thousand watts
consumed over one hour. Utilities use the WH equation to determine the overall consumption in a billing
period.
DEMAND: Average energy consumed over a specified time interval. The interval is determined by the
utility, typically, 15 or 30 minutes. The utility measures the maximum demand over a billing period.
This measurement exhibits a deviation from average consumption causing the utility to provide
generating capacity to satisfy a high maximum consumption demand. The highest average demand is
retained in the metering system until the demand level is reset.
POOR POWER FACTOR: Results in reactive power consumption. Transferring reactive power over a
distribution network causes energy loss. To force consumers to correct their Power Factor, utilities
monitor reactive power consumption and penalize the user for poor power factor.
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Chapter 1: AC Power Measurement
3DWA300
1.4: Waveform and Harmonics
Ideal power distribution has sinusoidal waveforms on voltages and currents. In real life applications,
where inverters, computers, and motor controls are used, distorted waveforms are generated. These
distortions consist of harmonics of the fundamental frequency.
SINUSOIDAL WAVEFORM: A • sin (ω ⋅ t)
DISTORTED WAVEFORM: A • sin(ω • t) + A 1 • sin(ω 1 • t) + A 2 • sin(ω 2 • t) + A 3 • sin(ω 3 • t) + L
TOTAL HARMONIC DISTORTION (THD):
% of THD =
RMS of Total HarmonicDistortionSignal
× 100
RMS of the Fundamental Signal
HARMONIC DISTORTION: A destructive force in power distribution systems. It creates safety problems,
shortens the life span of distribution transformers, and interferes with the operation of electronic devices.
The Futura+ monitors the harmonic distortion to the 31st harmonic. A waveform capture of distorted
waveform is also available.
% THD GRAPH
4
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CHAPTER 2
MECHANICAL INSTALLATION
2.1: Explanation of Symbols:
CAUTION, RISK OF DANGER. DOCUMENTATION MUST BE CONSULTED IN ALL
CASES WHERE THIS SYMBOL IS MARKED.
CAUTION, RISK OF ELECTRIC SHOCK.
PROTECTIVE CONDUCTOR TERMINAL.
ALTERNATING CURRENT.
BOTH DIRECT AND ALTERNATING CURRENT.
DIRECT CURRENT.
2.2: Mechanical Installation
METER NOTES:
• To clean the meter, wipe it with a clean, dry cloth.
• Meter’s environmental conditions:
- Operating Temperature: -20oC to +70oC/-4.0oF to +158oF
- Storage Temperature: -30oC to +80oC/-22oF to +176oF
- Relative Humidity: 90% non-condensing
- Ventilation requirement: Natural convection cooling is adequate. Allow unobstructed
airflow around the unit and monitor for a rise in temperature when the meter is installed in
an enclosed cabinet.
- The meter has no specific protection against ingress of water.
- The rating of this meter requires all input and output terminals to be connected
permanently: modification and maintenance of any kind should be performed only by
qualified personnel.
- Rated Altitude: 2,000 meters maximum
These diagrams display the various possible mechanical installations and Communication Converter
installation. The various models use the same hookup and installation.
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Chapter 2: Mechanical Installation
3DWA300
4.50
SQ.
POWER
Electro Industries
MAX
KW
MIN
LM1
KVAR
LM2
KVA
5.0
PF
VA
PF
MAX/MIN
LIMITS
PRINT
PROG
SET
4.375
.890
SQ.
Figure 2.1 Standard Installation of the 3DWA300—measurements in inches
3.0
36" CABLE
.80
POWER
Electro Industries
MAX
KW
MIN
KVAR
LM1
4.50
SQ.
LM2
KVA
.336
PF
VA
PF
MAX/MIN
PRINT
LIMITS
PROG
4.375
SQ.
2.45
SET
2.425
.890
(4) 8-32 SCREWS
.714
5.00
Figure 2.2: Installation of the 3DWA300 with K-110 Option for limited space conditions—measurements in inches
6
Electro Industries/GaugeTech
3DWA300
Chapter 2:Mechanical Installation
SIDE VIEW
(4) 8-32 SCREWS
FIRST PUT (16) PIN
CONNECTOR TOGETHER.
0.80
(2) 8-32 SCREWS WILL
LINE UP WITH 2 PEMS
ON THE BACK PLATE.
RECOMMENDED
CUTOUT
0.198 DIA.
1.6875
4.0 DIA.
3.375
1.6875
3.375
BACK VIEW
Figure 2.3: Standard cutout for 3DWA300—measurements in inches
Figure 2.4 Optional Communication Converter Installation or DC Output Module Installation
* Recommended wire gauge size is 22 AWG for DC output and RS-485 options.
Note: Carefully line up the guide screw and eight-pin port connector to prevent pins from
breaking.
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Chapter 2: Mechanical Installation
8
3DWA300
Electro Industries/GaugeTech
CHAPTER 3
ELECTRICAL INSTALLATION
3.1: Important Considerations When Installing Meters
Please read the following sections carefully for important safety information regarding
installation and hookup of the meter.
This meter is rated as “permanently installed equipment” and must be installed in non-accessible
areas only, e.g. control panels, switchgear enclosures, etc.
Installation of the meter must be performed only by qualified personnel who follow standard
safety precautions during all procedures. Those personnel should have appropriate training and
experience with high voltage devices. Appropriate safety gloves, safety glasses and protective
clothing are recommended.
During normal operation of the meter, dangerous voltages flow through many parts of the meter,
including: Terminals and any connected CTs (Current Transformers) and PTs (Potential
Transformers), all I/O Modules (Inputs and Outputs) and their circuits. All Primary and Secondary
circuits can, at times, produce lethal voltages and currents. Avoid contact with any currentcarrying surfaces.
Do not use the meter for primary protection or in an energy-limiting capacity. The meter can only
be used as secondary protection. Do not use the meter for applications where failure of the
meter may cause harm or death. Do not use the meter for any application where there may be a
risk of fire.
All meter terminals should be inaccessible after installation.
Do not apply more than the maximum voltage the meter or any attached device can withstand.
Refer to meter and/or device labels and to the Specifications for all devices before applying
voltages. Do not HIPOT/Dielectric test any Outputs, Inputs or Communications terminals.
EIG recommends the use of Shorting Blocks and Fuses for voltage leads and power supply to
prevent hazardous voltage conditions or damage to CTs, if the meter needs to be removed from
service. CT grounding is optional.
The UL Measurement Category of the meter is Category III, Pollution Degree II.
Refer to additional safety notes on the next page.
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Chapter 3: Electrical Installation
3DWA300
NOTES:
IF THE EQUIPMENT IS USED IN A MANNER NOT SPECIFIED BY THE MANUFACTURER,
THE PROTECTION PROVIDED BY THE EQUIPMENT MAY BE IMPAIRED.
THERE IS NO REQUIRED PREVENTIVE MAINTENANCE OR INSPECTION NECESSARY FOR
SAFETY. HOWEVER, ANY REPAIR OR MAINTENANCE SHOULD BE PERFORMED BY THE
FACTORY.
DISCONNECT DEVICE: THE FOLLOWING PART IS CONSIDERED THE EQUIPMENT
DISCONNECTING DEVICE. A SWITCH OR CIRCUIT-BREAKER SHALL BE INCLUDED IN THE
END-USE EQUIPMENT OR BUILDING INSTALLATION. THE SWITCH SHALL BE IN CLOSE
PROXIMITY TO THEEQUIPMENT AND WITHIN EASY REACH OF THE OPERATOR. THE
SWITCH SHALLBE MARKED AS THE DISCONNECTING DEVICE FOR THE EQUIPMENT.
3.1.1: Measurement Inputs Rating:
UL Classification: Measurement Category III, Pollution Degree II.
Current Inputs: 10A max.
Voltage Inputs1: 150V L-N, 300V L-L
Frequency: (45 to 75) Hz
1
Suffix - G extends the maximum direct voltage to 300V phase to neutral, 600 volt phase to phase.
Models with suffix - G are not UL rated.
3.2: Connecting the Current Circuit
Install the cable for the current at 600V AC minimum. The cable connector should be rated at 6 Amps or
greater and have a cross-sectional area of 16 AWG.
Mount the current transformers (CTs) as close as possible to the meter. The following table illustrates the
maximum recommended distances for various CT sizes, assuming the connection is via 16 AWG cable.
CT Size (VA)
Maximum Distance (CT to 3DWA)
2.5 VA
10 FEET
5.0 VA
15 FEET
7.5 VA
30 FEET
10.0 VA
40 FEET
15.0 VA
60 FEET
30.0 VA
120 FEET
Table 3.1: CT Size and Maximum Distance
WARNING: DO NOT leave secondary of CT open when primary current is flowing. This may cause
high voltage, which will overheat the CT. If the CT is not connected, provide a shorting
block on the secondary of the CT.
10
Electro Industries/GaugeTech
3DWA300
Chapter 3: Electrical Installation
3.3: CT Connection
When the meter is connected using the CTs, you must maintain the correct CT polarities. CT polarities
are dependent upon correct connections of CT leads, and upon the direction the CTs are facing when
clamped around conductors. The dot on the CT must face the line side; the corresponding secondary
connection must connect to the appropriate input on the meter. Failure to connect CTs properly results in
inaccurate power readings. If your meter is not reading power properly, it is more than likely the CT is
incorrectly wired.
Note: CTs are shorted if connected to the terminal block model DSP2 or 3, even if it is detached
from the meter.
HELPFUL DEBUGGING TOOLS
OPTION 1: ISOLATING A CT CONNECTION REVERSAL POWER READING
If your meter does not read the correct watts after installation, it almost always means that the CT’s have
been wired in the wrong polarity. To check the polarity of the CT after the monitor has been installed, look
at the single phase WATT readings to see that each of the readings are positive (assuming you are
consuming power). If one of the WATT readings is negative, that particular phase CT is reversed.
To check the single phase WATT reading, press the Power button twice while the annunciator is
positioned to WATTS. Then press the Phase/Next button to cycle through the phases. After connecting
the polarity of the CTs, the WATT and VAR readings should be correct.
OPTION 2: ISOLATING A CT CONNECTION REVERSAL USING VOLTAGE READINGS
Remove potential connections to terminals 6 and 7. Observe the KW reading. It should
be positive.
If negative, reverse the CT wires on terminals 8 and 9.
Connect terminal number 6 potential. If KW decreases to about zero, reverse CT wires on
terminals 10 and 11.
Connect terminal number 7 potential. If KW is one-third of expected reading, reverse CT wires to
terminals 12 and 13.
3.4: Connecting the Voltage Circuit
For proper meter operation, the voltage connection must be maintained. The voltage must correspond to
the correct terminal.
The cable required to terminate the voltage sense circuit should have an insulation rating greater than
600V AC and a current rating greater than 0.1 A.
3.5: Selecting the Voltage Fuses
We strongly recommend using fuses on each of the sense voltages and the control power, although
connection diagrams do not show them. Use a 1 Amp fuse on each voltage input.
Electro Industries/GaugeTech
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Chapter 3: Electrical Installation
3DWA300
3.6: Connection to the Main Power Supply
The meter requires separate control power to operate. Listed are the four different power supply options
and corresponding suffixes. The maximum power consumption is 10VA or 7W. AC unit’s frequency rating
is 50/60Hz.
CONTROL POWER
120V AC
230V AC/DC
24-48V DC
125V AC/DC (universal)
OPTION SUFFIX
115 A
230 A
D
D2
Table 3.2: Control Power and Current
Note: For DC-powered units, polarity should be observed. Connect the negative terminal to L and
positive terminal to L1. An earth ground connection to chassis is mandatory for normal
operation (terminal three). Do not ground the unit through the negative of the DC supply.
Note: Externally fuse power supply with a slow-blow 3 Amp fuse.
3.7: Electrical Connection Installation
Choose the diagram that best suits your application and maintain the CT polarity. Follow the outlined
procedure to verify correct connection. IMPORTANT: For PT connections only, short terminals 3 and 4.
Connect local ground to terminal 3. This protects the unit from spikes and transients.
• The meter and terminal module DSP3 are factory calibrated together; the serial numbers are matched
on both. The DSP3 input module and the meter base MUST MATCH!
• Mismatching of the meter and DSP3 input module will cause inaccurate readings because calibration
ratios are stored in the meter’s memory, not in the DSP3 input module.
LIST OF CONNECTION DIAGRAMS
I
Three-Phase, Three-Wire System Delta with Direct Voltage and CTs.
II
Three-Phase, Three-Wire Open Delta with two CTs and two PTs.
(Open Delta System Installation should only be used if the electrical system is a 3-wire 2 PT
OPEN DELTA. Open Delta can be enabled or disabled in Programming GROUP 0, FUNCTION
3, PACK 1, Switch D—see Chapter 7.)
III
Three-Phase, Four-Wire System Wye with Direct Voltage and CTs.
IV
Three-Phase, Four-Wire System Wye with CTs and PTs.
V
Three-Phase, Four Wire System Wye 2½ Element with CTs and PTs (3DWA250 only)
VI
Single Phase with CT and PT Connection
VII
Dual Phase with CTs and PTs
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3DWA300
Chapter 3: Electrical Installation
A
LINE
B
BACK VIEW
C
7 8
9
10 11 12 13
6
PORT
5
4
3
CONTROL
+
2 L1
-
1 L
POWER
LOAD
3-PHASE, 3-WIRE DELTA
WITH DIRECT VOLTAGE AND CTs
I. Three Phase Delta System
A
LINE
B
BACK VIEW
C
7 8
9
10
11
12 13
6
5
PORT
4
3
CONTROL
+
2 L1
-
1L
POWER
LOAD
3-PHASE, 3-WIRE OPEN DELTA
WITH 2 CTs AND 2 PTs
II. Open Delta PT Connection
—Special programming required; see Group 0, Function 3, Pack 1 Switch D: Chapter 7, section 7.4.
Electro Industries/GaugeTech
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Chapter 3: Electrical Installation
N
3DWA300
LINE
A B C
BACK VIEW
7 8
9
10
11 12
13
6
PORT
5
4
3
CONTROL
POWER
LOAD
+
2 L1
-
1 L
3-PHASE, 4-WIRE WYE
WITH DIRECT VOLTAGE AND CTs
III. Three Phase Wye System
LINE
N
A
B
BACK VIEW
C
7 8
9
10
11 12
13
6
5
PORT
4
3
+
2 L1
-
1 L
POWER
LOAD
3-PHASE, 4-WIRE WYE
WITH CTs AND PTs
IV. Three Phase Wye System with PTs
14
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3DWA300
Chapter 3: Electrical Installation
APPLIES TO 3DWA250 ONLY
LINE
N
A
B
BACK VIEW
C
7 8
9
10
11 12
13
6
5
PORT
4
3
+
2 L1
-
1 L
POWER
LOAD
3-PHASE, 4-WIRE WYE 2-1/2 ELEMENT
WITH CTs AND PTs
V. Three Phase, Four Wire System Wye 2½ Element with CTs and PTs
—3DWA250 only
LINE
A
BACK VIEW
7 8
10
9
11
12 13
6
5
PORT
4
3
LOAD
+
2 L1
-
1L
POWER
SINGLE-PHASE
WITH CT AND PT CONNECTION
VI. Single-Phase System
Electro Industries/GaugeTech
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Chapter 3: Electrical Installation
3DWA300
LINE
A
BACK VIEW
B
7 8
9
10
11 12
13
6
PORT
5
4
3
+
2 L1
-
1 L
POWER
LOAD
DUAL-PHASE
WITH CTs AND PTs
VII. Dual-Phase System
HELPFUL DEBUGGING TOOLS
ISOLATING A CT CONNECTION REVERSAL
1. Remove potential connections to terminals 6 and 7. Observe the KW reading. It should be positive. If
negative, reverse the CT wires on terminals 8 and 9.
2. Connect terminal number 6 potential. If KW decreases to about zero, reverse CT wires on terminals 10
and 11.
3. Connect terminal number 7 potential. If KW lowers to one-third of expected reading, reverse CT wires
to terminals 12 and 13.
3.7: Relays and Protection
Note: This section applies only to the -NL Relay Option.
The 3DWA's flexibility allows the user to access a variety of relay options through the Programming Mode
(see Chapter 7, section 7.5). The relay option package consists of two relays with two contacts, one
normally open and one normally closed. The relays can be either dedicated to alarm, or communication
controlled, or both.
The time delay is used to set an alarm, alerting the user when an out-of-limit condition has been
sustained beyond the user-defined time limit. The time delay can be programmed for up to 9999 seconds.
If the relays are controlled through communication, there are two different modes:
•
•
16
Lock ON: Relay will not be affected by any alarm condition.
Lock OFF: Relay will not be affected by any alarm condition.
Electro Industries/GaugeTech
3DWA300
Chapter 3: Electrical Installation
If the relays are controlled through communication and dedicated to alarm, there are four different
modes:
•
•
•
•
Lock ON
Relay stays on regardless of any alarm condition.
Lock OFF Relay stays off regardless of any alarm condition.
Free ON
Relay turns on unless other conditions force it off.
Free OFF Relay turns off unless other conditions force it on.
20
N.O.
21
N.C.
22
COM
23
N.O.
24
N.C.
25
COM
ALARM #1
ALARM #2
Figure 3.1: Relay Configuration
Diagram 3.1 is a close-up of the relays on the rear panel. The relays shown are in the NOT energized
state (form C relays, rated 250V, 5A, 2 each).
KYZ relays are not available because the meter does not have a WATT/HOUR counter.
The 3DWA300 can be programmed to detect two levels of alarm for the following functions:
•
•
•
Over and Reverse Power
Under PF/KVAR Lead or Lag
Over KVA
Electro Industries/GaugeTech
17
CHAPTER 4
COMMUNICATION INSTALLATION
All 3DWA instruments can be equipped for RS232C or RS485 communication.
4.1: RS232C
RS232C communication is used to link a single 3DWA instrument with a computer or device such as RTU
or PLC. The link is capable for a distance up to 100 feet. A standard 9-pin female serial port allows direct
connection to a computer with a 9-pin cable.
8
9
10
11
12
13
7
20
6
21
5
COMMUNICATION
22
23
4
CONVERTER
24
3
2
1
Model SF-232-DB2
25
26
27
28
Use a 232 Extension Cable
NO NULL-MODEM IS REQUIRED
Figure 4.1: RS232C Communication Connection Installation
4.2: RS485
Each 3DWA instrument has a unique address up to four digits long. This allows the user to communicate
with up to 10,000 instruments. Available standard baud rates are 1200, 2400, 4800, and 9600. To select
the proper baud rate, apply the following rules:
The unit operates up to 9600 baud. For a smaller number of instruments over a long
distance, use a lower baud rate. Optimal recommended baud rate is 1200 baud if noisy
conditions exist.
RS485 parallels multiple instruments on the same link. Its operating capability is up to 4000 feet. The link
can include up to 60 instruments.
Electro Industries/GaugeTech
19
Chapter 4: Communication Installation
3DWA300
RS485 Hookup Diagram (4 wire) Full Duplex
SF485DB
This does not represent a
twisted pair. It shows the crossover from R to T between the
Unicom and the rest of the bus
RS-485
Electro Industries
UNICOM 2500
(Bottom View Shown)
RS-232
IBM Compatible
R+
R-
T+
T-
Figure 4.2: 4-Wire RS485 Communication Connection Installation Full Duplex
—Detail View next page
Note: 4-wire RS485 is strongly recommended because it provides cleaner communication and is
less susceptible to noise interference. It is important to shield the communication wire and
ground it at one end. Grounding at both ends causes a ground loop and results in noise
problems.
Connecting 4-Wire BUS to RS485 Port:
•
•
•
•
20
Connect the T- wire of the Unicom 2500 to the R- on the RS485 port
Connect the R- wire of the Unicom 2500 to the T- on the RS485 port
Connect the T+ wire of the Unicom 2500 to the R+ on the RS485 port
Connect the R+ wire of the Unicom 2500 to the T+ on the RS485 port
Electro Industries/GaugeTech
3DWA300
Chapter 4: Communication Installation
RS485 Hookup Diagram (4 wire) Full Duplex Detail view
Key
Twisted Pair Segment
RS485
Communications
Port
RS485
Communications
Port
Model#
SF485DB
Model#
SF485DB
G
R+ T+
R-
T-
G
R+ T+
R-
T-
This does not represent a
twisted pair. It shows the crossover from R to T between the
Unicom and the rest of the bus
RS-485
RS-232
TRT+
R+
Gnd
Enlarged view of twisted pair segments
R- R+
R+ R-
Receive Pair
Electro Industries
UNICOM 2500
(Bottom View Shown)
T- T+
T+ T-
Transmit Pair
Figure 4.3: 4-Wire RS485 Communication Connection Installation Full Duplex Detail View
Connecting 4-Wire bus to RS485 Port:
•
•
•
•
Connect the T- wire of the Unicom 2500 to the R- on the RS485 port
Connect the R- wire of the Unicom 2500 to the T- on the RS485 port
Connect the T+ wire of the Unicom 2500 to the R+ on the RS485 port
Connect the R+ wire of the Unicom 2500 to the T+ on the RS485 port
Electro Industries/GaugeTech
21
Chapter 4: Communication Installation
3DWA300
RS-485 Hookup Diagram (2 wire) Half Duplex
SF485DB
RT
RT
RS-485
Electro Industries
UNICOM 2500
(Bottom View Shown)
RS-232
IBM Compatible
(+) (-)
Figure 4.4: 2-Wire RS-485 Communication Connection Installation Half Duplex
—Detail view on following page
22
Electro Industries/GaugeTech
3DWA300
Chapter 4: Communication Installation
RS485 Hookup Diagram (2 wire) Half Duplex Detail View
RS485
Communications
Port
RS485
Communications
Port
Model#
SF485DB
Model#
SF485DB
G
R+
T+
R-
T-
G
R+ T+
R-
T-
RT
RS-485
RS-232
TRT+
R+
Gnd
(-) (+)
Electro Industries
UNICOM 2500
(Bottom View Shown)
Figure 4.5: 2-Wire RS485 Communication Connection Installation Half Duplex Detail View
Connecting two-wire BUS to RS485 Port on CPU-1000
1.
Take the positive (+) wire and connect to R+ on the RS485 Port.
2.
Connect a jumper from R+ to T+ on the RS485 Port.
3.
Take the negative (-) wire and connect to R- on the RS485 Port.
4.
Connect a jumper from R- to T-.on the RS485 Port.
Electro Industries/GaugeTech
23
Chapter 4: Communication Installation
DEVICE
<==60 UNITS==>
3DWA300
RS485
TRANSPONDER
DEVICE
60 TRANSPONDER
DEVICE
<==60 UNITS==>
COMPUTER
RS485
TRANSPONDER
DEVICE
Figure 4.6 4-Wire RS485 Communication Installation Connection with Transponder
4.3: Network of Instruments and Long Distance Communication
Use the RS485 Transponder for a large instrument network. In a two-wire connection, a maximum of 900
instruments can be included in the same network (Figure 4.4). In a four-wire connection, a maximum of
3600 instruments can be included in the same link (Figure 4.2).
You may want to use a Modem Manager RS485-RS232 Converter. When speaking to most RS485 or
RS232C based devices, the remote modem must be programmed for the communication to work. This
task is often quite complicated because modems are quirky when talking to remote devices. To make this
task easier, EIG has designed a Modem Manager RS485 to RS232C converter. This device
automatically programs the modem to the proper configuration. Also, if you have poor telephone lines,
modem manager acts as a line buffer, making the communication more reliable. Use modems (dedicated
or dial-up) when the instruments are at great distances. However, set the modem to auto-answer at the
recommended 1200 baud rate if noise conditions exist.
I. Modem Connected to Computer (Originate Modem)
Programming the Modem
Comply with the modem’s instruction manual and follow these instructions:
RESTORE MODEM TO FACTORY SETTINGS:
• This procedure erases all previously programmed settings.
SET MODEM TO DISPLAY RESULT CODES:
• The device uses the result codes.
SET MODEM TO VERBAL RESULT CODE:
• The device uses the verbal codes.
SET MODEM TO IGNORE DTR SIGNAL:
• Necessary for the device to ensure connection with originate modem.
SET MODEM TO DISABLE FLOW CONTROL:
• Necessary to communicate with remote modem connected to device.
TELL MODEM TO WRITE THE NEW SETTINGS TO ACTIVATE PROFILE:
• Places these settings into nonvolatile memory; the settings take effect after the modem powers up.
24
Electro Industries/GaugeTech
3DWA300
Chapter 4: Communication Installation
II. Modem Connected to the Device (Remote Modem)
Programming the Modem
Comply with the modem’s instruction manual and follow these instructions:
RESTORE MODEM TO FACTORY SETTINGS:
• This procedure erases all previously programmed settings.
SET MODEM TO AUTO ANSWER ON N RINGS:
• Sets the remote modem to answer the call after n rings.
SET THE MODEM TO AUTO NEGOTIATE MODE:
• Sets the remote to auto negotiate to communicate successfully with DMMS300+ and other devices in
the modem.
SET MODEM TO RETURN NUMERIC RESULT CODES:
• Increases speed connection with DMMS300+.
SET MODEM TO IGNORE DTR SIGNAL:
• Necessary for device to ensure connection with originate modem.
SET MODEM TO DISABLE FLOW CONTROL:
• Necessary to communicate with remote modem connected to DMMS300+.
TELL THE MODEM TO WRITE THE NEW SETTINGS TO ACTIVATE PROFILE:
• Places new settings into nonvolatile memory; settings take effect after the modem powers up.
Electro Industries/GaugeTech
25
Chapter 4: Communication Installation
26
3DWA300
Electro Industries/GaugeTech
CHAPTER 5
3DWA300 OVERVIEW
The 3DWA300 monitors four electrical parameters: WATT, VAR, VA and PF. It reads to 0.50% accuracy
with a resolution of 0.1% at a range up to 1999 counts and reads PF to 1.0% to a range of 1.0 to ± 0.5.
Note: The 3DWA300 and 3DWA250 are essentially the same meter. The 3DWA250 includes a 2.5
element WYE.
POWER
PRESS THE MAX/MIN/LIMITS
BUTTON TO ACCESS
THE MAXIMUM, MINIMUM,
LIMIT 1 OR LIMIT 2 VALUES
Electro
MAX
MIN
KW
LM1
KVAR
LM2
A GLOWING ANNUNCIATOR
INDICATES THE POWER FUNCTION
CURRENTLY DISPLAYED
KVA
PF
VA
PF
MAX/MIN
PRINT
LIMITS
PROG
SET
WATT, VAR, VA MAY BE DISPLAYED SIMULTANEOUSLY—
PRESS THE VA/PF BUTTON TO TOGGLE BETWEEN PF AND VA
5.1: Accessing Max/Min Values
Max/min values are available for all instantaneous measurements. Max/min values represent the highest
and lowest average demand over a user programmable period of time. This is known as the Integration
Interval. Readings are calculated using a rolling average technique. Each second a new reading is used
to calculate the max and the min; the last reading of the interval is dropped off.
To access the max or min:
POWER
Electro Industries
MAX
MIN
KW
LM1
KVAR
LM2
KVA
PF
VA
PF
MAX/MIN
PRINT
LIMITS
PROG
Step 1:
a. Press MAX/MIN/LIMITS:
• once to view the max values
• twice to view the min values
• five times to view the negative max
• six times to view the negative min
Values appear momentarily.
SET
Electro Industries/GaugeTech
27
Chapter 5: Overview
3DWA300
5.2: Resetting Max/Min Values
Use the reset function if a new max/min value is desired. The max/min reset is available in two modes.
1. Unprotected Mode—Allows quick resetting of max/min values.
2. Protected Mode—Prevents unauthorized resetting of the max/min values. To enable the protected
mode, enter Programming Group 0, Function 3, Pack 1, Switch B, see Chapter 7.
The KVA and PF cannot be displayed simultaneously and require separate resetting of the max/min
demand values.
Unprotected Reset
POWER
POWER
Electro Industries
Electro Industries
MAX
MIN
KW
MAX
MIN
KW
LM1
KVAR
LM1
KVAR
LM2
VA
PF
LM2
MAX/MIN
PRINT
LIMITS
PROG
KVA
KVA
PF
PF
VA
PF
SET
Step 1:
a. Press MAX/MIN/LIMITS once to view max
values and twice to view min values.
MAX/MIN
PRINT
LIMITS
PROG
SET
The display blanks and a check mark appears
momentarily, confirming a successful reset.
b. While the number is displayed, press SET to
reset the values.
Protected Reset
POWER
POWER
Electro Industries
Electro Industries
MAX
MIN
KW
MAX
MIN
KW
LM1
KVAR
LM1
KVAR
LM2
VA
PF
LM2
MAX/MIN
PRINT
LIMITS
PROG
KVA
KVA
PF
PF
SET
Step 1:
The password is 005.
a. Press MAX/MIN/LIMITS once to view max
values and twice to view min values.
VA
PF
MAX/MIN
PRINT
LIMITS
PROG
SET
A 0 appears in the upper display, two 0s appear
in the lower display.
b. While the number is displayed, press and
hold down the SET button until two 0s appear in
the lower display. Then release the SET button.
28
Electro Industries/GaugeTech
3DWA300
Chapter 5: Overview
POWER
POWER
Electro Industries
Electro Industries
MAX
MIN
KW
MAX
MIN
KW
LM1
KVAR
LM1
KVAR
LM2
VA
PF
LM2
MAX/MIN
PRINT
LIMITS
PROG
KVA
KVA
PF
PF
VA
PF
SET
MAX/MIN
PRINT
LIMITS
PROG
SET
Step 2:
a. The top display begins to scroll from 0 to 5.
When a 5 appears press SET again.
The display blanks and a check mark appears
momentarily, confirming a successful reset.
5.3: Accessing the LM1/LM2 Set Limits
The 3DWA300 has two set limits that monitor the instantaneous readings and warn the user of any
abnormal conditions. Each limit can detect readings above or below the set level. The set limits flash an
annunciator on the face of the monitor. To trigger a relay, the -NL option must be purchased. If a limit is
exceeded, the LM1 or LM2 annunciator will flash.
To view the LM1/LM2 set limits:
POWER
Electro Industries
MAX
MIN
KW
LM1
KVAR
LM2
KVA
PF
VA
PF
MAX/MIN
PRINT
LIMITS
PROG
Step 1:
a. Press MAX/MIN/LIMITS:
• three times to access LM1 limit
• four times for the LM2 limit
Set limits appear momentarily.
SET
5.4: Access Modes
Access commands allow the user to perform specific operations.
ACCESS COMMANDS
1
2
3
4
Note:
OPERATION
Print Operating Data
Print Programming Data
Enter Programming Mode (see Part II:
Programming)
Firmware Version/LED Test
Print commands 1 and 2 are only available if enabled in the programming mode (see
Group 0, Function 3, Pack 3, Switch D, Chapter 7); they are not recommended when using
the multimeter hookup RS-485. The print option should be disabled when using the RS485. Disabling prevents the user from corrupting data at a computer terminal while
multiple meters are being polled.
Electro Industries/GaugeTech
29
Chapter 5: Overview
3DWA300
5.5: Print Operating Data
Note: This function applies if a serial printer is connected to the 3DWA300 via an RS-232C
communication port.
This function sends data to a serial printer, creating a hard copy of the instantaneous and max/min data
of all the functions.
To print the Operating Data:
POWER
POWER
Electro Industries
Electro Industries
MAX
MIN
KW
MAX
MIN
KW
LM1
KVAR
LM1
KVAR
LM2
LM2
VA
PF
MAX/MIN
PRINT
LIMITS
PROG
KVA
KVA
PF
PF
VA
PF
SET
Step 1:
a. Press PRINT/PROG until 1 appears.
MAX/MIN
PRINT
LIMITS
PROG
SET
Step 2:
a. While the 1 is displayed, press SET to activate
the Print Operating Data function.
111 appears momentarily to confirm printing.
5.6: Print Programming Data
Note: This function applies if a serial printer is connected to the 3DWA300 via an RS232C
communication port.
The Print Programming Data function sends programming data (also known as the meter setup) to a
serial printer for quick reference and verification.
To print programming data:
POWER
POWER
Electro Industries
Electro Industries
MAX
MIN
KW
MAX
MIN
KW
LM1
KVAR
LM1
KVAR
LM2
VA
PF
LM2
MAX/MIN
PRINT
LIMITS
PROG
KVA
KVA
PF
PF
SET
Step 1:
a. Press PRINT/PROG until 2 appears.
VA
PF
MAX/MIN
PRINT
LIMITS
PROG
SET
Step 2:
a. While the 2 is displayed, press SET to activate
the print programming data function.
222 appears momentarily to confirm printing.
30
Electro Industries/GaugeTech
3DWA300
Chapter 5: Overview
5.7: Firmware Version/LED Test
The 3DWA300 can access the firmware version number of the dual microprocessors. It can also perform
an LED test to check if the LEDs and annunciators are functioning properly.
To access firmware versions and perform an LED test:
POWER
POWER
POWER
Electro Industries
Electro Industries
Electro Industries
MAX
MIN
KW
MAX
MIN
KW
MAX
MIN
KW
LM1
KVAR
LM1
KVAR
LM1
KVAR
LM2
LM2
VA
PF
MAX/MIN
PRINT
LIMITS
PROG
LM2
KVA
KVA
KVA
PF
PF
PF
VA
PF
SET
MAX/MIN
LIMITS
PRINT
PROG
SET
For Firmware Versions:
Step 1:
a. Press PRINT/PROG until 4
appears.
b While the 4 is displayed, press
MAX/MIN/ LIMITS for Firmware
Versions.
VA
PF
MAX/MIN
PRINT
LIMITS
PROG
SET
For The LED Test:
The upper display indicates the
analog processor version.
The lower display indicates the
digital processor version.
Versions appear momentarily.
Step 1:
a. Press PRINT/PROG until 4
appears.
b. While the 4 is displayed,
press SET for the LED Test.
All segments and annunciators
glow simultaneously.
The display returns to the
current readings.
Electro Industries/GaugeTech
31
Part II: Programming
CHAPTER 6
PROGRAMMING OVERVIEW
•
This chapter describes basic programming procedures. Refer to chapters 7–10 for details on specific
programming features.
6.1 General Procedure
To program your 3DWA300 you will:
1. Enter a password to gain access to the programming mode (section 6.2).
2. Select a programming GROUP to work in (section 6.3).
3. Select a FUNCTION or SWITCH PACK within that GROUP (section 6.3).
4. Change the selected parameters of the FUNCTION or SWITCH PACK with DATA ENTRY (section
6.4).
5. Exit the programming mode to store your changes permanently (section 6.5).
Electro Industries/GaugeTech
33
Chapter 6: Programming Overview
3DWA300
6.2: Password Entry
To access the programming mode you must enter a password. Password entry ensures information
security and eliminates unauthorized intrusion. The password is preset at the factory and cannot be
changed. It is 555.
To enter the programming mode:
POWER
POWER
POWER
KW
MAX
MIN
LM1
LM2
KVAR
KW
MAX
MIN
LM1
LM2
KVAR
KVA
PF
VA
PF
MAX/MIN
LIMITS
PRINT
PROG
SET
KVA
PF
VA
PF
Electro Industries
MAX/MIN
LIMITS
PRINT
PROG
VA
PF
SET
Step 1:
a. Press PRINT/PROG until 3
appears in lower display.
Step 2:
a. Digits begin scrolling in upper
display.
b. While the 3 is displayed, press
SET again to multiply the 3 to
333.
⌦The password is 555.
333 appears in lower display.
34
KVAR
KVA
PF
Electro Industries
Electro Industries
KW
MAX
MIN
LM1
LM2
b. Press SET each time a 5
appears until 555 is entered.
The selected digits appear in
lower display.
MAX/MIN
LIMITS
PRINT
PROG
SET
The display blanks and PPP
flashes in upper display,
confirming a correctly entered
password.
PPP is replaced by 0. The
meter is now in the Programming
Mode, GROUP 0.
Electro Industries/GaugeTech
3DWA300
Chapter 6: Programming Overview
6.3: Programming GROUPS and FUNCTIONS
Programming tasks are bundled into GROUPS. Located within each GROUP are specific meter
FUNCTIONS. See the Table of Contents and individual chapters for descriptions of the tasks performed
by each GROUP.
Some FUNCTIONS are further divided into SWITCH PACKS, which are a set of separate ON/OFF toggle
switches. Toggle switches have only two positions: either UP segment or DOWN segment. By setting the
segment to UP or DOWN, a particular feature is turned ON or OFF, respectively.
Groups
Functions
Switch Packs
GROUP
FUNCTION
PACK
POWER
KW
MAX
MIN
SWITCHES (Left to Right):
A, B, C, D
LM1
KVAR
LM2
SETTING
KVA
PF
Electro
VA
PF
PREVIOUS
MAX/MIN
LIMITS
PRINT
PROG
NEW
ENTRY
SET
Figure 6.1: The Programming Mode—the switch segments of Group 0, Function 3, Pack 0
Electro Industries/GaugeTech
35
Chapter 6: Programming Overview
3DWA300
6.4: Data Entry
Programmable FUNCTION values are always four-digit numeric fields designed to accept any value
between 000 and 1999 (a blank signifies a 0). When entering the value of a parameter you must enter all
four digits, leading zeros included. For example, if you want to enter the number 25, you must enter 025.
6.5: Exiting Programming Mode
Note: To store new programming data permanently you must EXIT the programming mode.
The steps for exiting the programming mode vary depending upon the level of programming.
IF YOU ARE LOCATED IN THE FUNCTION Level—begin at Step 1.
IF YOU ARE LOCATED IN THE GROUP Level—begin at Step 2.
EXITING FROM THE FUNCTION LEVEL
EXITING FROM THE GROUP LEVEL
POWER
POWER
KW
MAX
MIN
LM1
LM2
KW
MAX
MIN
LM1
LM2
KVAR
KVAR
KVA
PF
KVA
PF
Electro Industries
VA
PF
Electro Industries
MAX/MIN
LIMITS
PRINT
PROG
VA
PF
SET
Step 1:
a. Press VA/PF until the Group number in upper
display is followed by E.
b. Press PRINT/PROG to exit from Function Level
to Group Level.
MAX/MIN
LIMITS
PRINT
PROG
SET
Step 2:
a. Press VA/PF until E. appears in upper display.
b. Press PRINT/PROG to exit entirely from the
Programming Mode.
6.6: Checksum Error—Protective Mechanism
If the control power is interrupted while in Programming Mode or the user does not completely exit, the
meter enters a checksum mode. The display blanks, except for the max LED. Press VA/PF and
PRINT/PROG simultaneously and the unit will recover. Follow the procedure to enter Programming Mode
to check program data. If the data is correct, then exit.
This checksum error is a protective mechanism. It alerts the user if a procedure was not correctly
followed to prevent the meter from displaying inaccurate numbers.
36
Electro Industries/GaugeTech
CHAPTER 7
PROGRAMMING GROUP 0—GLOBAL METER SETUP
The Global Meter Setup includes FUNCTIONS 0 through 5, which control configuration and basic
operation of the 3DWA300. The table below lists GROUP 0 Functions.
Group and Function Number
00.
01.
02.
03.
04.
05.
0E.
Function
Integration Interval
Meter Address for Communication
Baud Rate for Communication
System Configuration
Relay 1 Set-up / Time delay
Relay 2 Set-up / Time delay
Exit Programming GROUP 0
Table 7-1: Group 0 Programming Format
7.1: Group 0, Function 0—Integration Interval
The Integration Interval is the time period over which all instantaneous readings are averaged to obtain
a maximum and minimum demand. The Integration Interval is entered in seconds. For example, to enter
15 minutes enter 0900 seconds.
To change the Integration Interval:
Note: Press VA/PF at any time to cancel before storing the last digit or switch.
POWER
POWER
KW
MAX
MIN
LM1
LM2
KVAR
KW
MAX
MIN
LM1
LM2
KVAR
KVA
PF
KVA
PF
Electro Industries
Electro Industries
VA
PF
MAX/MIN
LIMITS
PRINT
PROG
SET
Step 1:
a. Enter Group Level of Programming Mode
(see Chapter 6).
b. Press VA/PF until 0. appears in upper display.
VA
PF
MAX/MIN
LIMITS
PRINT
PROG
SET
Function 00. appears in upper display.
Lower display indicates the current Integration
Interval.
c. Press PRINT/PROG to activate the Group.
Electro Industries/GaugeTech
37
Chapter 7: Global Meter Setup
3DWA300
POWER
POWER
KW
MAX
MIN
LM1
LM2
KVAR
KW
MAX
MIN
LM1
LM2
KVAR
KVA
PF
VA
PF
KVA
PF
Electro Industries
Electro Industries
MAX/MIN
LIMITS
PRINT
PROG
VA
PF
SET
Step 2:
a. Press PRINT/PROG to begin Data Entry
Sequence.
The previous value shifts to middle display and
three dashes appear in lower display.
b. Press MAX/MIN/LIMITS to select desired
number for the first digit (blank signifies a 0).
c. Press PRINT/PROG to store it and move to the
next digit.
MAX/MIN
LIMITS
PRINT
PROG
SET
Repeat this procedure until new Integration
Interval is entered. Press PRINT/PROG to store
entire setting.
When complete, middle display blanks and lower
display indicates new Integration Interval.
See Chapter 6, section 6.5 to Exit.
7.2: Group 0, Function 1—Meter Address
The Meter Address identifies the meter for the purposes of digital communications. When numerous
meters are at one site, it is essential that each meter have its own address. Otherwise, all meters will
speak simultaneously and communication is useless.
To change the Meter Address:
Note: Press VA/PF at any time to cancel before storing the last digit or switch.
POWER
POWER
KW
MAX
MIN
LM1
LM2
KVAR
KW
MAX
MIN
LM1
LM2
KVAR
KVA
PF
KVA
PF
Electro Industries
Electro Industries
VA
PF
MAX/MIN
LIMITS
PRINT
PROG
SET
Step 1:
a. Enter Group Level of Programming Mode
(see Chapter 6).
b. Press VA/PF until 0. appears in upper display.
VA
PF
MAX/MIN
LIMITS
PRINT
PROG
SET
Press VA/PF until Function 01. appears in upper
display.
Lower display indicates current Meter Address.
c. Press PRINT/PROG to activate the Group.
38
Electro Industries/GaugeTech
3DWA300
Chapter 7: Global Meter Setup
POWER
POWER
KW
MAX
MIN
LM1
LM2
KW
MAX
MIN
LM1
LM2
KVAR
KVAR
KVA
PF
KVA
PF
Electro Industries
Electro Industries
VA
PF
MAX/MIN
LIMITS
PRINT
PROG
VA
PF
SET
Step 2:
a. Press PRINT/PROG to begin Data Entry
Sequence.
The previous value shifts to middle display and
four dashes appear in lower display.
b. Press MAX/MIN/LIMITS to select desired
number for the first digit (blank signifies a 0).
c. Press PRINT/PROG to store it and move to the
next digit.
MAX/MIN
LIMITS
PRINT
PROG
SET
Repeat this procedure until new address is
entered. Press PRINT/PROG to store entire
setting.
When complete, middle display blanks and lower
display indicates new Meter Address.
See Chapter 6, section 6.5 to Exit.
7.3: Group 0, Function 2—Communication Baud Rate
The Baud Rate is the speed at which data is transmitted between monitor and remote communications.
The rate programmed into the meter must match the rate used by the remote device. Valid Baud Rates
are: 1200, 2400, 4800 and 9600.
Note: For data entry purposes the last zero for each rate is dropped off. Leading zero's must be
included. For example: to enter a Baud Rate of 2400, enter 0240. Remember, the last zero is
a blank. See Table 7-2, below, for the Baud Rates and their corresponding Baud Rate
Numbers.
Communication Baud Rate
1200
2400
4800
9600
Left Digit—Blank Or 1 Only
BLANK
BLANK
BLANK
BLANK
Enter Baud Rate Number
120
240
480
960
Table 7-2: Baud Rate Numbers
Electro Industries/GaugeTech
39
Chapter 7: Global Meter Setup
3DWA300
To change the Baud Rate:
Note: Press VA/PF at any time to cancel before storing the last digit or switch.
POWER
POWER
KW
MAX
MIN
LM1
LM2
KVAR
KW
MAX
MIN
LM1
LM2
KVAR
KVA
PF
Electro Industries
VA
PF
KVA
PF
Electro Industries
MAX/MIN
LIMITS
PRINT
PROG
VA
PF
SET
Step 1:
a. Enter Group Level of Programming Mode
(see Chapter 6).
b. Press VA/PF until 0. appears in upper display.
MAX/MIN
LIMITS
PRINT
PROG
SET
Press VA/PF until Function 02. appears in upper
display.
Lower display indicates current Baud Rate.
c. Press PRINT/PROG to activate the Group.
POWER
POWER
KW
MAX
MIN
LM1
KVAR
LM2
KW
MAX
MIN
LM1
KVAR
LM2
KVA
PF
Electro Industries
VA
PF
MAX/MIN
LIMITS
PRINT
PROG
SET
Step 2:
a. Press PRINT/PROG to begin Data Entry
Sequence.
The previous value shifts to middle display and
three dashes appear in lower display.
b. Press MAX/MIN/LIMITS to select desired
number for the first digit (blank signifies a 0).
c. Press PRINT/PROG to store it and move to the
next digit.
40
KVA
PF
Electro Industries
VA
PF
MAX/MIN
LIMITS
PRINT
PROG
SET
Repeat this procedure until new Communication
Baud Rate is entered. Press PRINT/PROG to store
entire setting.
When complete, middle display blanks and lower
display indicates the new Baud Rate.
See Chapter 6, section 6.5 to Exit.
Electro Industries/GaugeTech
3DWA300
Chapter 7: Global Meter Setup
7.4: Group 0, Function 3—System Configuration
The System Configuration function sets the 3DWA300's basic operational parameters. This Function
contains four different Switch PACKS, 0–3. Each PACK contains four individual UP/DOWN segments.
Toggling the segment between UP and DOWN toggles the switch ON or OFF or chooses between two
options. The meter displays one Switch PACK at a time. Press MAX/MIN/LIMITS to scroll from PACK to
PACK.
GROUP
FUNCTION
PACK
POWER
SWITCHES (Left to Right):
A, B, C, D
KW
MAX
MIN
LM1
KVAR
PREVIOUS
LM2
SETTING
KVA
PF
Electro
VA
PF
PACK
0
1
2
3
MAX/MIN
LIMITS
PRINT
PROG
SWITCH
A
B
C
D
A
FEATURE
Reserved
Reserved
Reserved
Reserved
Non-significant Blank Leading Zero
B
Reset Protection
C
VA/PF Display
D
Open Delta Installation
A
B
C
D
A
Reserved
Reserved
Reserved
Reserved
Trip Relay Computer Control I
B
Trip Relay Computer Control II
C
Communications*
D
DC Output Print Operating and
Programming Data*
NEW
ENTRY
SET
SEGMENT POSITION
—
—
—
—
UP—Enable
DOWN—Disable
UP—Enable
DOWN—Disable
UP—Enable
DOWN—Disable
UP—Enable
DOWN—Disable
—
—
—
—
UP—Alarm Only
DOWN—Computer Control & Alarm
UP—Alarm Only
DOWN—Computer Control & Alarm
UP—Comm
DOWN—Disable Comm & Print
UP—Print
DOWN—Disable Print
Table 7-3: System Configuration and switch features
Note: To Print, PACK 3, Switches C and D must be in the UP position.
Electro Industries/GaugeTech
41
Chapter 7: Global Meter Setup
3DWA300
To change a system configuration switch setting:
Note: Press VA/PF at any time to cancel before storing the last digit or switch.
POWER
POWER
KW
MAX
MIN
LM1
LM2
KVAR
KW
MAX
MIN
LM1
LM2
KVAR
KVA
PF
Electro Industries
VA
PF
KVA
PF
Electro Industries
MAX/MIN
LIMITS
PRINT
PROG
VA
PF
SET
MAX/MIN
LIMITS
PRINT
PROG
SET
Step 1:
a. Enter Group Level of Programming Mode
(see Chapter 6).
Press VA/PF until function 030. appears in
upper display.
b. Press VA/PF until 0. appears in upper display.
Lower display indicates current System
Configuration Switch setting.
Press PRINT/PROG to activate the Group.
PACK
POWER
POWER
KW
MAX
MIN
LM1
LM2
KVAR
LM2
KVAR
KVA
PF
Electro Industries
VA
PF
KW
MAX
MIN
LM1
MAX/MIN
LIMITS
PRINT
PROG
KVA
PF
Electro Industries
VA
PF
MAX/MIN
LIMITS
PRINT
PROG
SET
SET
Step 2:
a. Press MAX/MIN/LIMITS until desired PACK
appears.
Step 3:
a. Press MAX/MIN/LIMITS to toggle the first
segment to a desired setting.
b. Press PRINT/ PROG to begin Data Entry
Sequence.
b. Press PRINT/PROG to store it. Repeat for all
segments.
The previous Switch settings shift to middle
display and four dashes appear in lower display
Press PRINT/PROG to store entire setting. When
complete, middle display blanks and lower display
indicates new System Configuration Switch setting.
See Chapter 6, section 6.5 to Exit.
42
Electro Industries/GaugeTech
3DWA300
Chapter 7: Global Meter Setup
7.5: Group 0, Functions 4–5—Time Delay for Relays 1 and 2 (Option-NL)
The 3DWA300can be equipped with a relay option. Two relays are included in this option. The relays can
be used in computer-controlled or dedicated alarm options. Function 4 is used to set Relay 1; Function 5
is used to set Relay 2.
Computer Controlled: The relays can be locked or unlocked through a computer (the 3DWA300 must
have a communication option).
Dedicated Alarm: The relays can be locked or unlocked using the meter’s keypad or its measured inputs.
The computer cannot change the state of the relay.
The time delay for Relays 1 and 2 can be set from 0–255 seconds. This allows conditions to exist for a
user-specified period of time before the relay or alarm activates. If a time greater than 255 seconds is
entered, the meter defaults to the maximum value of 255 seconds.
To program the time delay:
Note: Press VA/PF at any time to cancel before storing the last digit or switch.
POWER
POWER
KW
MAX
MIN
LM1
KVAR
LM2
KW
MAX
MIN
LM1
KVAR
LM2
KVA
PF
Electro Industries
VA
PF
KVA
PF
Electro Industries
MAX/MIN
LIMITS
PRINT
PROG
SET
Step 1:
a. Enter Group Level of Programming Mode
(see Chapter. 6).
b. Press VA/PF until 0. appears in upper display.
c. Press PRINT/PROG to activate the Group.
Electro Industries/GaugeTech
VA
PF
MAX/MIN
LIMITS
PRINT
PROG
SET
Step 2.
Press VA/PF to select Function 04 for Relay 1 or
Function 05 for Relay 2.
Lower display indicates the current Time Delay.
43
Chapter 7: Global Meter Setup
3DWA300
POWER
POWER
KW
MAX
MIN
LM1
LM2
KVAR
KW
MAX
MIN
LM1
LM2
KVAR
KVA
PF
Electro Industries
VA
PF
Electro Industries
MAX/MIN
LIMITS
PRINT
PROG
SET
Step 3:
a. Press PRINT/PROG to begin Data Entry
Sequence.
The previous value shifts to middle display and
three dashes appear in lower display.
b. Press MAX/MIN/LIMITS to select desired
number for the first digit. (Blank signifies a 0).
c. Press PRINT/PROG to store it and move to the
next digit.
44
KVA
PF
VA
PF
MAX/MIN
LIMITS
PRINT
PROG
SET
Repeat this procedure until new Time Delay is
entered. Press PRINT/PROG to store entire
setting.
When complete, middle level blanks and lower
display indicates the new Time Delay.
See Chapter 6, section 6.5 to Exit.
Electro Industries/GaugeTech
CHAPTER 8
PROGRAMMING GROUP 1—VOLTAGE, AMPERAGE AND WATT
SCALE SETTINGS
8.1: Group 1, Functions 0–1—Full Scale Settings & Decimal Point Placement for
Volt & Amp Channels
Programming GROUP 1 functions provide a selection of Full Scale Settings to accommodate different
CTs and PTs. Scale selection may be performed in each of the functions. The group also allows selection
for Volts/Kilovolts, Amps/Kiloamps and Kilowatts/Megawatts.
GROUP AND FUNCTION NUMBER
10.
11.
12.
1E.
FUNCTION
Full Scale Selection for Volts
Full Scale Selection for Amps
Full Scale Selection for Watts
Exit Programming GROUP 1
Table 8-1: Group 1 Programming Format
INPUT VOLTAGE
75 V (Suffix L)
120/208 V
120/208 V
120/208 V
277/480 V (Suffix G)
PT RATIO
120.13:1
1:1 (Direct)
4:1
12:1
1:1 (Direct)
FULL SCALE
9.01 KV
0120 V
0480 V
01.44 KV
0300 V
Table 8-2: Full Scale Settings for Volts
INPUT CURRENT
0–5 A
0–1000 A
0–5000 A
CT TYPE
None
1000/5
5000/5
FULL SCALE
05.00 A
1000 A
05.00 KA
Table 8-3: Typical Full Scale Settings for Amps
Note: Decimal point placement for Volt and Amp channels is selected through Function 0 and
Function 1. The decimal position must be re-set each time these Functions are used.
Electro Industries/GaugeTech
45
Chapter 8: Scale Settings
3DWA300
To change the full scale settings (Functions 10–11):
Note: Press VA/PF at any time to cancel before storing the last digit or switch.
POWER
POWER
KW
MAX
MIN
LM1
LM2
KVAR
KW
MAX
MIN
LM1
LM2
KVAR
KVA
PF
Electro Industries
VA
PF
KVA
PF
Electro Industries
MAX/MIN
LIMITS
PRINT
PROG
VA
PF
SET
Step 1:
a. Enter Group Level of Programming Mode
(see Chapter 6).
b. Press VA/PF until 1. appears in upper display.
c. Press PRINT/PROG to activate the Group .
MAX/MIN
LIMITS
PRINT
PROG
SET
Function 10 (Full Scale Volts) appears in upper
display. Press VA/PF to select Function 11 for Full
Scale Amps.
Middle display indicates current Scale Factor
Setting.
Lower display indicates Full Scale (for Volts in
this example).
POWER
POWER
KW
MAX
MIN
LM1
LM2
KW
MAX
MIN
LM1
KVAR
KVAR
LM2
KVA
KVA
PF
Electro Industries
Electro Industries
VA
PF
PF
MAX/MIN
LIMITS
PRINT
PROG
SET
VA
PF
MAX/MIN
LIMITS
PRINT
PROG
SET
ENTERING THE SCALE FACTOR:
DECIMAL POINT SELECTION:
Step 2:
a.
Press PRINT/PROG to begin Data Entry
Sequence.
Step 3:
a. Press MAX/MIN/LIMITS to move decimal point.
Lower display is replaced with a dash.
b. Press PRINT/PROG to store.
b. Press MAX/MIN/LIMITS to move the segment
UP or DOWN to set Scale Factor.
UP signifies Kilovolts.
DOWN signifies Volts.
c. Press PRINT/PROG to store.
46
Electro Industries/GaugeTech
3DWA300
Chapter 8: Scale Settings
POWER
POWER
KW
MAX
KW
MAX
MIN
MIN
LM1
LM1
KVAR
LM2
KVAR
LM2
KVA
KVA
PF
PF
Electro Industries
Electro Industries
VA
PF
MAX/MIN
LIMITS
PRINT
PROG
SET
VA
PF
MAX/MIN
LIMITS
PRINT
PROG
SET
ENTERING THE FULL SCALE:
Step 4:
Middle display indicates Full Scale for Volts
Repeat this procedure until desired value is
entered. Press PRINT/PROG to store entire
setting.
Three dashes appear in lower display.
b. Press MAX/MIN/LIMITS to select desired
number for the first digit (blank signifies a 0).
c. Press PRINT/PROG to store it and move to the
next digit.
Lower display indicates new Full Scale Setting
Middle display indicates Scale Factor.
Upper display indicates Group and Function
Number (including decimal point).
See Chapter 6, section 6.5 to exit.
8.2: Group 1, Function 2: Scale Selection & Decimal Point Placement for
Kilowatts/Megawatts
Programming GROUP 1 also provides decimal point positioning for maximum resolution. The following
aids in selecting the best decimal position for Function 2.
Example 1:
Full Scale Voltage (FSV)=120 V
Full Scale Amperage (FSA)=5.00 A
Full Scale Wattage (FSW) is the product of FSV and FSA. For the FSW for three phases multiply the
FSW by 3.
FSW (one phase) =120 Vx5.00 A
FSW (one phase)=600 W
FSW (three phase)=600 Wx3 = 1,800 W
Here the FSW is too small a value for a Megawatt meter. FSW in the Kilowatt meter equals 1.800 KW. In
FUNCTION 2, place the decimal point after the first digit.
Example 2:
FSV=480 V
FSA=1000 A
FSW (one phase)=480 Vx1000 A
FSW (one phase=480,000 W
Electro Industries/GaugeTech
47
Chapter 8: Scale Settings
3DWA300
FSW (three phase)=480,000 Wx3 = 1,440,000 W
FSW for Kilowatt a meter equals 1440.KW. FSW for a Megawatt meter equals 1.440 MW. In FUNCTION
2 place the decimal point after the last digit for a Kilowatt meter and after the first digit for a Megawatt
meter.
Example 3:
FSV=1.440 KV
FSA=1000 A
FSW (one phase)=1440 Vx1000 A
FSW (one phase)=1,440,000 W
FSW (three phase)=1,440,000 Wx3 = 4,320,000 W
FSW for a Kilowatt meter equals 4320 KW. Here the FSW is too large a value for a Kilowatt meter (the
range is 000–1999). FSW for a Megawatt meter equals 04.32 MW. In FUNCTION 2, place the decimal
point after the second digit.
To change scale selection and decimal point placement: for Full Scale Watts:
Note: Press VA/PF at any time to cancel before storing the last digit or switch.
POWER
POWER
KW
MAX
MIN
MIN
LM1
KVAR
LM2
KVAR
LM2
KVA
KVA
PF
Electro Industries
MAX/MIN
LIMITS
PRINT
PROG
SET
Step 1:
a. Enter Group Level of Programming Mode
(see Chapter 6).
b. Press VA/PF until 1. appears in upper display.
c. Press PRINT/PROG to activate the Group.
48
LM1
PF
Electro Industries
VA
PF
KW
MAX
VA
PF
MAX/MIN
LIMITS
PRINT
PROG
SET
Press VA/PF until Function 12. appears in upper
display.
Middle display indicates Scale Factor Setting.
Lower display indicates 1999 (decimal point
placement).
Electro Industries/GaugeTech
3DWA300
Chapter 8: Scale Settings
POWER
POWER
KW
MAX
MIN
KW
MAX
MIN
LM1
LM1
KVAR
LM2
KVAR
LM2
KVA
KVA
PF
Electro Industries
VA
PF
PF
Electro Industries
MAX/MIN
LIMITS
PRINT
PROG
SET
Step 2:
a.
Press PRINT/PROG to begin Data Entry
Sequence.
Lower display is replaced with a single dash
VA
PF
MAX/MIN
LIMITS
PRINT
PROG
SET
Step 3:
Display blanks and 1999 appears in lower display
(including current decimal setting).
a. Press MAX/MIN/LIMITS to move the decimal.
b. Press MAX/MIN/LIMITS to toggle between UP
(Megawatt) and DOWN (Kilowatt).
b. Press PRINT/PROG to store.
c. Press PRINT/PROG to store.
See Chapter 6, section 6.5 to Exit.
Electro Industries/GaugeTech
49
CHAPTER 9
PROGRAMMING GROUP 2—METER CALIBRATION
WARNING—READ THIS SECTION CAREFULLY BEFORE PROCEEDING:
⌦ Any rescaling, such as a change in a transformer ratio, can be accomplished in GROUP 1. Calibration is not
necessary.
⌦ Meter calibration cannot be performed if the meter is installed for service. The sensing inputs must be connected
to a power supply with variable voltage and separate current outputs.
⌦The calibration procedure requires highly accurate and stable input signals. Incorrect readings result from
improper calibration procedures. If unsure, return unit to EIG for calibration.
⌦ BEFORE calibrating any channel, make a note of its Full Scale Setting (See Chapter 8). Set the Full Scale in
accordance with Table 9-2 for calibration. Restore original Full Scale Setting when calibration is completed.
⌦ The first function in GROUP 2 (STD.CORR) is NOT to be changed by the user. Please make a note of the value
here [___________] before using any other function in this group. If the STD.CORR value is inadvertently lost or
changed, contact EIG for assistance.
In general, a significant drift in calibration is unlikely. Therefore, a yearly re-calibration of the meter is not
required.
9.1: Calibration Requirements
FUNCTIONS 0–8 (High and Low End Calibration) can be calibrated by qualified site technicians if a
stable calibration source can be applied.
Calibration on the 3DWA300 requires precise inputs of 120 Volts, 5 Amps, and 2.5 Amps. The 3DWA300G model requires precise inputs of 300 Volts, 5 Amps, and 2.5 Amps. If this equipment is unavailable,
contact EIG for assistance.
GROUP AND FUNCTION NUMBER
FUNCTION
2P.
Standard Correction—Factory Procedure only.
20.
High End Calibration—Volts AN
21.
High End Calibration—Volts BN
22.
High End Calibration—Volts CN
23.
High End Calibration—Amps A
24.
High End Calibration—Amps B
25.
High End Calibration—Amps C
26.
Low End Calibration—Amps A
27.
Low End Calibration—Amps B
28.
Low End Calibration—Amps C
2E.
Exit Programming GROUP 2
Table 9-1: Group 2 Programming Format
Electro Industries/GaugeTech
51
Chapter 9: Meter Calibration
3DWA300
The Full Scale and Calibration values should be equal during the calibration procedure. Refer to Table 92, below.
CALIBRATION TYPE/RANGES
Volts 75 V
Volts 120/208 V
Volts 277/480 V
Amps Hi End 2000/5 CT
Amps Lo End
CALIBRATION SOURCE
75 V
120 V
300 V
5A
2.5 A
CALIBRATION VALUE
14.40
14.40
0300
1999
1000
Table 9-2: Calibration Source, Full Scale and Value Settings for Calibration
9.2: Group 2, Functions 0–8—High-End Calibration of Voltage Channels, High- &
Low-End Calibration of Amperage Channels
To change the calibration (Functions 0–5):
Note: Press VA/PF at any time to cancel before storing the last digit or switch.
POWER
POWER
KW
MAX
MIN
LM1
KVAR
LM2
KW
MAX
MIN
LM1
LM2
KVAR
KVA
PF
KVA
PF
Electro Industries
VA
PF
Electro Industries
MAX/MIN
LIMITS
PRINT
PROG
SET
VA
PF
MAX/MIN
LIMITS
PRINT
PROG
SET
Step 1:
a. Enter Group Level of Programming Mode
(see Chapter. 6).
Step 2:
Refer to Table 9-1 for the Function Number that
corresponds to channel requiring calibration.
b. Press VA/PF until 2. appears in upper display.
a. For example, to calibrate Volts BN, press VA/PF
until 21. appears.
c. Press PRINT/PROG to activate the Group.
A one digit password is required to continue.
(2P is pre-calibrated. This is a factory-set value
and should not be altered.)
d. Press MAX/MIN/LIMITS until 5 appears.
e. Press PRINT/PROG to select.
52
Electro Industries/GaugeTech
3DWA300
Chapter 9: Meter Calibration
POWER
POWER
KW
MAX
MIN
LM1
LM2
KVAR
KW
MAX
MIN
LM1
LM2
KVAR
KVA
PF
KVA
PF
Electro Industries
Electro Industries
VA
PF
MAX/MIN
LIMITS
PRINT
PROG
VA
PF
SET
MAX/MIN
LIMITS
PRINT
PROG
SET
Step 3:
Apply the calibration to the appropriate channel.
Step 4:
The new value moves to middle display.
a. Press PRINT/PROG to activate calibration.
Lower display indicates new calibrated value
after 10-15 seconds.
Current value moves to middle display.
Three dashes appear in lower display.
b. Press MAX/MIN/LIMITS to select desired
number for the first digit (a blank signifies a 0).
a. Press VA/PF to exit calibration sequence.
If the calibrated reading is not acceptable repeat
the entire procedure after checking all connections
and calibration signals.
c. Press PRINT/PROG to store it and move to the
next digit. Repeat until value is entered.
Note: Repeat the same procedure for FUNCTIONS 0–2. Set FUNCTIONS 3–5 High-End current
value to 999. Set Low End value to 1000.
For Function 6, Low-end Amps:
POWER
POWER
KW
MAX
MIN
LM1
LM2
KVAR
KVAR
KVA
PF
KVA
PF
Electro Industries
VA
PF
Electro Industries
VA
PF
KW
MAX
MIN
LM1
LM2
MAX/MIN
LIMITS
PRINT
PROG
MAX/MIN
LIMITS
PRINT
PROG
SET
SET
Step 1:
Set the source to half of the current Hi End Scale.
a. After entering Programming mode (see Chapter
6) press VA/PF until 26. appears in upper display.
b. Press PRINT/ PROG to activate.
Middle and lower displays blank.
Step 2:
The new value moves to middle display.
Lower display indicates calibrated reading, after
10-15 seconds.
a. Press VA/PF to exit Calibration Procedure.
After 10 seconds, the calibrated number appears.
Electro Industries/GaugeTech
53
CHAPTER 10
PROGRAMMING GROUP 5—SET LIMITS AND RELAYS
Group 5 allows the user to set the limit values LM1 and LM2 for all power functions—Kilowatt, Kilovar,
Kilovolt-ampere, Power factor, Negative kilovar, Negative power factor, and Negative kilowatt.
LM1 AND LM2 SET LIMITS
120.0
120.0
LM1 is triggered
LM1 SET TO
TRIGGER ABOVE
100.0 KWATTS.
100.0
80.0
80.0
POWER
60.0
(KWATTS)
50.0
40.0
40.0
LM2 is triggered
LM2 SET TO
TRIGGER BELOW
50.0 KWATTS.
20.0
0
4:00 PM
5:00 PM
6:00 PM
TIME
Figure 10.1 Example of LM1/LM2 Set Limits
10.1: Trip Relay
The 3DWA300 has two relays. These relays are linked through the program to Set Limits LM1 and LM2.
The user can program above or below set limits for every reading. When a measurement exceeds a
particular value, the set limit triggers and alerts the user.
Note: Each limit can be programmed to trigger the two internal Form-C dry-contact relays for
alarm or secondary protection.
10.2: Time Delays & Relay Mode
Time Delay indicates whether a delay exists in the relay changing position.
Relay Mode indicates whether the relay will act as a protective switch or not.
Note: The Time Delay is located in GROUP 0, FUNCTIONS 4 & 5, Chapter 7, section 7.5. The Relay
Mode is located in GROUP 0, FUNCTION 3, PACK 3, Switches A and B—see Chapter 7,
section 7.4
Electro Industries/GaugeTech
55
Chapter 10: Set Limits and Relays
3DWA300
10.3: Group 5, Functions 0–7—LM1/LM2 Set Limits
USE THE
POW ER
M A X /M IN /L IM IT S
BUTTO N TO
TOGGLE
BETW EEN LM 1
AND LM 2.
KW
M AX
M IN
LM 1
KVAR
LM 2
FROM LEFT TO
R IG H T : S E T
L IM IT
A B O V E /B E L O W ,
T R IP R E L A Y I,
A N D T R IP
R E L A Y II.
A N A N N U N C IA T O R
IN D IC A T E S W H IC H
F U N C T IO N 'S ( K W , K V A R ,
V A , O R P F ) O R L M 1 /L M 2
S E T L IM IT S A R E B E IN G
PRO G RAM M ED.
U S E T H E V A /P F B U T T O N
T O A C C E S S D IF F E R E N T
P O W E R F U N C T IO N S .
KVA
T H E L IM IT
VALUE
PF
E le c tro In d u s trie s
VA
M A X / M IN
PF
L IM IT S
GROUP AND FUNCTION
NUMBER
50.
51.
52.
53.
54.
55.
56.
57.
5E.
P R IN T
PROG
SET
FUNCTION
LM1/LM2 Set Limits for Kilowatt
LM1/LM2 Set Limits for Kilovar
LM1/LM2 Set Limits for Kilovolt-ampere
LM1/LM2 Set Limits for Power Factor
Reserved
LM1/LM2 Set Limits for Negative Kilovar
LM1/LM2 Set Limits for Negative Power Factor
LM1/LM2 Set Limits for Negative Kilowatt
Exit Programming GROUP 4
Table 10-1: Group 5 Programming Format
Note: In Table 10-2, all functions have a two-part entry.
Part 1: The first switch sets the limit to trip either above or below the limit level value.
The second switch sets whether Relay 1 will trip when the condition occurs.
The third switch sets whether Relay 2 will trip when the condition occurs.
Part 2: The second part is the Limit Value.
LM1
LED
ON
LM2
LED
OFF
OFF
ON
ABOVE/BELOW
RELAY 1
RELAY 2
LEVEL
DIGIT UP-Trigger above level
DIGIT DOWN-Trigger below
level
DIGIT UP-Trigger above level
DIGIT DOWN-Trigger below
level
DIGIT UP-Enabled
DIGIT DOWNDisabled
DIGIT UP-Enabled
DIGIT DOWNDisabled
DIGIT UP-Enabled
DIGIT DOWNDisabled
DIGIT UP-Enabled
DIGIT DOWNDisabled
0-1999
0-1999
0-1999
0-1999
Table 10-2: Functions 0–7
Note: Function 3, Power Factor, contains a permanent decimal point after the first digit. The
highest and lowest level limits that can be programmed are 1.000 and 0.000, respectively.
56
Electro Industries/GaugeTech
3DWA300
LM1
LED
ON
OFF
Chapter 10: Set Limits and Relays
LM2
LED
OFF
ON
ABOVE /RETURN
RELAY 1
RELAY 1
VALUE
Digit Up
Digit Down
Digit Up
Digit Down
Digit Down
Digit Up
0120
0090
Table 10-3: Example for Function 0
Example (see Table 10-3, above): If Kilowatts exceed 120W, LM1 is triggered and Relay 1 is enabled. If
the Kilowatts do not exceed 90W, LM2 is triggered and Relay 2 is enabled.
To change Relay 1 or Relay 2:
Note: Press VA/PF, at any time, to cancel before storing the last digit or switch.
POWER
POWER
KW
MAX
MIN
LM1
LM2
KVAR
KW
MAX
MIN
LM1
LM2
KVAR
KVA
PF
Electro Industries
VA
PF
KVA
PF
Electro Industries
MAX/MIN
LIMITS
PRINT
PROG
SET
Step 1:
a. Enter Group Level of Programming Mode
(see Chapter. 6).
b. Press VA/PF until 5. appears in upper display.
c. Press PRINT/PROG to activate the Group.
VA
PF
MAX/MIN
LIMITS
PRINT
PROG
SET
Step 2:
a. Press VA/PF to select desired FUNCTION (0-7).
Middle display indicates the selected value for
whether to trip above or below on Relay 1 and
Relay 2.
Left Switch: UP position indicates above
tripping value for lower display’s value. DOWN
position indicates below tripping value for lower
display’s value.
Middle Switch: UP position sets Relay 1 to trip.
DOWN position does not activate Relay 1 when
limit condition exists.
Right Switch: Same as Middle Switch,
regarding Relay 2.
b. Press MAX/MIN/LIMITS to toggle between LM1
and LM2 settings.
The LM1 or LM2 annunciator indicates the limit
being displayed.
Electro Industries/GaugeTech
57
Chapter 10: Set Limits and Relays
3DWA300
POWER
POWER
KW
MAX
MIN
LM1
LM2
KVAR
KW
MAX
MIN
LM1
LM2
KVAR
KVA
PF
Electro Industries
VA
PF
KVA
PF
Electro Industries
MAX/MIN
LIMITS
PRINT
PROG
VA
PF
SET
Step 3:
a. Press PRINT/PROG once to activate data
entry..
MAX/MIN
LIMITS
PRINT
PROG
SET
Step 4:
a. Press MAX/MIN/LIMITS to toggle each the
segment to desired setting (see Table 10-2).
b. Press PRINT/PROG to store it and move to the
next one. Press PRINT/PROG to store entire
setting.
When complete, display automatically switches to
programming the Setup Level.
POWER
POWER
KW
MAX
MIN
LM1
LM2
KW
MAX
MIN
LM1
KVAR
KVAR
LM2
KVA
KVA
PF
Electro Industries
Electro Industries
VA
PF
MAX/MIN
LIMITS
PRINT
PROG
SET
Step 5:
Middle display indicates current Setup Level.
Three dashes appear in lower display.
b. Press MAX/MIN/LIMITS to select desired
number for the first digit. (Blank signifies a 0).
c. Press PRINT/PROG to store it and move to the
next digit.
58
PF
VA
PF
MAX/MIN
LIMITS
PRINT
PROG
SET
Repeat this procedure until the new Setup Level
is complete.
The display returns to the Function Level with
new settings.
See Chapter 6, section 6.5 to Exit.
Electro Industries/GaugeTech
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