Siemens 4700 Power Meter Operator’s Manual

4700 Power Meter
Operator’s Manual
DANGER
Hazardous voltages and high-speed moving parts in electrical
devices communicating with the Power Meter.
Can cause death, serious injury or property damage.
See safety instruction contained herein. Restrict use to qualified
personnel.
The use of unauthorized parts in the repair of the equipment
or tampering by unqualified personnel will result in
dangerous conditions that can cause death, serious injury or
property damage.
IMPORTANT
The information contained herein is general in nature and not
intended for specific application purposes. It does not relieve
the user of responsibility to use sound practices in application, installation, operation, and maintenance of the
equipment purchased. Siemens reserves the right to make
changes at any time without notice or obligations. Should a
conflict arise between the general information contained in
this publication and the contents of drawings or supplementary material or both, the latter shall take precedence.
QUALIFIED PERSONNEL
For the purposes of this manual and product labels, "qualified
personnel" is one who is familiar with the installation,
construction, or operation of the equipment and the hazards
involved. In addition, s/he has the following qualifications:
(a) is trained and authorized to energize, de-energize, clear,
ground, and tag circuits and equipment in accordance
with established safety practices.
(b) is trained in the proper care and use of protective gear
equipment such as rubber gloves, hard hat, safety glasses
or face shields, flash clothing, etc., in accordance with
established safety procedures
(c) is trained in rendering first aid.
SUMMARY
These instructions do not purport to cover all details or variations in equipment, nor to provide for every
possible contingency to be met in connection with installation, operation, or maintenance. Should further information be desired or should particular problems arise which are not covered sufficiently for the purchaser’s
purposes, the matter should be referred to the local Siemens Energy & Automation, Inc. sales office.
THE CONTENTS OF THIS INSTRUCTION MANUAL SHALL NOT BECOME PART OF OR MODIFY ANY PRIOR OR
EXISTING AGREEMENT, COMMITMENT OR RELATIONSHIP. THE SALES CONTRACT CONTAINS ALL OBLIGATIONS OF SIEMENS ENERGY & AUTOMATION, INC. THE WARRANTY CONTAINED IN THE CONTRACT
BETWEEN THE PARTIES IS THE SOLE WARRANTY OF SIEMENS ENERGY & AUTOMATION, INC.
ACCESS, ISGS, Isolated Multi-Drop, S7-I/O, SBwin, SAMMS-LV, SAAMS-MV,SEAbus,SIEServe, Static Trip III,
Wisdom, and WinPM are trademark, Sensitrip and Sentron are registered trademarks of Siemens Energy &
Automation, Inc. SIEMENS is a registered trademark of Siemens AG. Windows is a trademark of Microsoft
Corporation. All other product names mentioned herein are used for identification purposes only and may be
the trademarks or registered trademarks of their respective companies.
Table of Contents
Appendixes
1
Introduction ...............................................1
4.4 Auxiliary Current Output......................................20
5
1.1 About the 4700 Power Meter ............................... 1
5.1 Start Up .............................................................21
1.2 Performance Features .......................................... 1
5.2 Front Panel Operation.........................................21
1.3 Displays and Measurements................................. 1
5.2.1 ........................... Standard Phase Display21
5.2.2 Full Width Display .....................................21
5.2.3 Three-Phase Displays...............................21
5.2.4 Phase Button ............................................21
5.2.5 Function Button ........................................22
5.2.6 Minimum and Maximum Buttons .............22
1.4 Other Functions.................................................... 2
1.4.1 Logging Capability...................................... 2
1.4.2 Control Relays ............................................ 2
1.4.3 Status Inputs .............................................. 2
1.4.4 Auxiliary Voltage Input ................................ 2
1.4.5 Auxiliary Current Output ............................. 2
1.5 Communications and ACCESS Compatibility ....... 2
2
6
Programming .......................................... 25
6.1 Programming Mode............................................25
Installation .................................................3
6.1.1 Programming Button Functions ...............25
6.1.2 Entering the Password .............................25
6.1.3 Changing the Password ...........................25
6.1.4 Skipping Over the Setpoint Parameters ...26
2.2 Power Supply....................................................... 3
2.3 Power Wiring........................................................ 3
2.3.1 Chassis Ground Connection ...................... 3
2.3.2 Voltage Reference Connection................... 3
2.3.3 Fourth Current Input Connections.............. 5
2.3.4 Waveform Capture Connections ................ 5
2.4 Selecting Voltage and Current Transformers ......... 5
2.4.1 Selecting VTs .............................................. 5
2.4.2 Selecting CTs.............................................. 5
2.5 Connecting to 3-Phase, Wye (Star) Systems ........ 6
2.6 Connecting to Three-Phase, Delta Systems ......... 9
2.7 Connecting to Single Phase, Three-Wire Systems ..
11
Communications Wiring .........................13
3.1 Configuring the Communications Card ............... 13
3.2 Terminal and LED Indicator Functions................. 14
3.3 RS-232 Connections.......................................... 14
3.4 RS-485 Connections.......................................... 15
4
5.3 Power Reading Polarities....................................23
1.6 System Applications ............................................. 2
2.1 Location and Mounting......................................... 3
3
Operator Interface.................................. 21
Optional Wiring........................................17
6.2 Basic Settings ....................................................26
6.2.1 Volt Scale ..................................................26
6.2.2 Amps Scale...............................................26
6.2.3 Volts Mode................................................26
6.3 Additional Settings..............................................26
6.3.1 Auxiliary Voltage Input Operation .............26
6.3.2 Auxiliary Current Output Operation ..........26
6.3.3 Display Format..........................................29
6.4 Control Relay Operation .....................................29
6.4.1 Control Relay Modes ................................29
6.4.2 Access to Relay Parameters ....................29
6.4.3 Setpoint Relay Operation .........................29
6.4.4 kVARH and kWH Pulse Operation............29
6.4.5 Manual Forced Relay Operations .............29
6.4.6 Relay Event Logging.................................30
6.4.7 Manual Relay Command Special Cases ..30
6.4.8 Relay Operation After Power Outages .....30
6.5 Bi-Directional Energy ..........................................30
6.6 Status Input Operation .......................................30
4.1 Status Inputs...................................................... 17
6.7 Fourth Current Input Operation ...........................30
4.1.1 Dry (Volts Free) Contact Sensing.............. 17
4.1.2 Voltage Sensing........................................ 18
6.8 Waveform Capture .............................................30
6.9 Operating Parameter Descriptions ......................31
4.2 Control Relay Connections ................................. 18
4.2.1 Relay Application Precautions.................. 18
4.3 Auxiliary Voltage Input ........................................ 20
7
Using Setpoints .......................................35
7.1 Applications ....................................................... 35
7.2 Over Setpoint ..................................................... 35
7.3 Under Setpoint ................................................... 36
Siemens Energy & Automation, Inc.
i
Table of Contents
7.4 Programming Setpoints ......................................36
8
Demand Calculation ...............................39
8.1 Demand Measurement Methods ........................39
8.2 Internally Timed Demand Measurement..............39
8.3 Demand Synchronization....................................39
9
Communications.....................................41
9.1 General ..............................................................41
9.2 RS-232 Communications ...................................41
9.3 RS-485 Communications ...................................41
9.4 Setting the Unit ID and Baud Rate ......................41
9.5 Siemens WinPM Software ..................................42
9.6 Third-Party System Compatibility........................42
10 Maintenance............................................43
10.1Battery Replacement ..........................................43
10.2Calibration ..........................................................43
10.3Field Service Considerations...............................43
11 Troubleshooting ......................................44
A
Technical Specifications .......................45
B
Dimensions.............................................47
C
Setpoint Parameter Form .....................48
D
Firmware Versions .................................49
E
Ordering Information .............................50
Warranty
Index
© 1996 Siemens Energy & Automation, Inc.
ACCESS, Isolated Multi-Drop, SEAbus, SIEServe, Power Monitor, and WinPM
are trademarks of Siemens Energy & Automation, Inc.
Windows is a trademark and Microsoft is a registered trademark of Microsoft
Corporation. Other product names are trademarks of their respective holders.
ii
Siemens Energy & Automation, Inc.
1 Introduction
1 Introduction
•
4-digit amperage display
1.1 About the 4700 Power Meter
•
8-digit power function display
The 4700 power meter is a microprocessor-based instrumentation package for low, medium or high voltage electrical
equipment and substations. It is a state-of-the-art alternative
to traditional analog electromechanical metering devices.
The unit is economical and is easy to install and operate. It
requires no external transducers.
The unit can be configured to operate in wye (star), delta, or
single-phase voltage modes. The following measurements
are available:
•
Current on each phase
•
A fourth current input (I4)
•
Line-to-line voltages
1.2 Performance Features
•
Frequency
The 4700 power meter offers major improvements in accuracy, communications capability, data logging, control capability, ease of use, and cost, compared to traditional analog
components or first generation digital metering systems. The
4700 power meter operates as a stand-alone switchboard,
switchgear, motor control center or substation instrument,
and serves as a data collection point for Siemens ACCESS™
electrical distribution communication system.
•
Power factor
•
kVA
•
kW
•
kVAR
•
kW Demand
The unit uses a 12 MHz, 16-bit microcontroller chip. This
provides very high computational throughput, allowing the
sophisticated software to process information in real time.
The unit is self-contained and its readings and setup parameters are maintained in nonvolatile memory. Connections to
the 4700 power meter are on the rear of the unit, as shown in
Figure 1.1.
•
VAUX (auxiliary voltage input)
•
Total MWHr
•
Total MVARHr
This manual supersedes all previous publication versions on
the installation and operation of the 4700 power meter.
1.3 Displays and Measurements
You can view readings from the alphanumeric display. Readings are displayed in the following format:
4-digit voltage display phase indication
R13
R21 R22 R23
R31 R32
R33
V1
Control Relays
V2
V3
VREF N/-
Voltage Inputs
L/+
Power
NOTE:
Specifications below are standard.
For options refer to model number and
instruction book SG-6068.
Resistive: 10 Amp, 277 V AC/30 VDC
Inductive: 240 VAC, 3400 VA Make, 360 VA Break
Line to Neutral 120 VAC Nominal
85-264 VACC/0.2 Amp, 47-440 Hz
or 110-300 VDC/0.2 Amp
0 to 20 mA Output
1 Volt AC/DC Input, Class 2 only
5 Amp AC only, 25% Overrange, 30V Max.
Dry contact sensing. Do not apply voltage.
12 Lbs-inch (1.35Nm) Torque
12 AWG, 4 mm², 75°C Cu wire only
Control Relays:
Serial Number:
Software Version:
Voltage Inputs:
Power Supply:
Auxiliary IOut Output:
Auxiliary VAux Input:
Current Inputs:
Status Inputs:
Terminal Strip:
Maximum Wire:
This equipment complies with the requirements in part 15 of FCC rules for a
Class A computing device. Operation of this equipment in a residential area may
cause inacceptable interference to radio and TV reception requiring the operator
to take whatever steps are necessary to correct the interference.
Listed Ind.
Contr. Eq. 1T98
R
WARNING / AVERTISSEMENT
LR 57329
R
Siemens Energy & Automation, Inc.
Switchgear & Motor Control Division
Raleigh, NC • USA
Made in Canada
RXD
GND
Electrical Rating
4700 Power Meter
TXD
Hazardous voltage.
Can cause death or
severe injury.
Haute tension
pouvant entrainer des
blessures mortelles.
More than one live
circuit. Disconnect all
power sources to deenergize before servicing.
See wiring diagram.
Plus d’un circuit sous-tension.
Déconnecter toutes les
sources de tensions avant
toute manipulation.
Voir schéma de cablage.
SHLD
-
RS-485
R11 R12
+
RXD
TXD
SG
RS-232C
•
Minimum and maximum values for each of the readings are
available. You can also set the unit to take snapshots of all
readings at specified intervals and maintain them in nonvolatile memory. The snapshot data is read using the serial communications port.
RTS
SIEMENS
Auxiliary
Current Inputs
IOut VAux
I11 I12
I21
Status Inputs
I22
I31 I32
I41
I42
S1
S2
S3
ISOCOM
S4 SCOM
Figure 1.1 Front and Rear Views
Siemens Energy & Automation, Inc.
1
1 Introduction
1.4 Other Functions
1.4.1
Logging Capability
The 4700 power meter can record up to three data logs.
•
EVENT Log. This log records events such as power up,
parameter changes, alarm conditions, relay changes,
and status input changes. The 50 most recent events
are retrievable from this log using the communications
port.
•
SNAPSHOT Log. This log contains voltage, current, and
all power values recorded at user-defined time intervals.
The 100 most recent snapshots are retrievable from this
log using the communications port.
•
MIN/MAX Log. This log records the extreme values for
voltages, currents, power, and other measured parameters. Min/Max data is read using the integral display or
the communications port.
All log contents (events, snapshots, and min/max values) are
time-stamped to the second.
1.4.2
•
•
Alarm relays and setpoint relays. These can operate as a
function of any measured parameter for demand, power
factor, or load control.
Remote control relays, operated by command via the
communications port.
kVARHr, kWHr pulse outputs.
1.4.3
Status Inputs
The 4700 power meter has four status input options available, which can each sense the state of an external contact,
active or inactive. The status of these inputs is viewed and
logged by a Power Monitor™ display and monitoring unit, or
by another computer through the communications port.
1.4.4
Auxiliary Voltage Input
All 4700 power meter models have an auxiliary voltage input
that allows monitoring and display of an additional external
voltage (1.25 VAC max).
1.4.5
1.6 System Applications
The unique features of the 4700 power meter, including measurement, storage, setpoint (load shedding) and display
characteristics, make it suitable for use in:
•
Utility Installations
•
Industrial Buildings
•
Office Buildings
•
Commercial Buildings
•
Hospitals
•
Telephone Exchanges
•
Factories
•
Pulp Mills
•
Saw Mills
•
Shopping Centers
•
Large Stores
•
Hotels
•
Substation Metering
•
Co-Generation Systems
•
Chemical Process Plants
•
Multi-User Sites (where allocation of electrical cost is
desirable)
•
Any other installation that uses significant amounts of
electrical energy
•
Any other location where remote monitoring and control
is needed
Auxiliary Current Output
You can program an optional analog current output for 0 to
20 mA or 4 to 20 mA, in proportion to any measured parameter.
2
The 4700 power meter is equipped with an optically isolated
communications port for displaying data on remote supervisory devices. These devices and programs allow the meter
to operate in the ACCESS electrical distribution communication system. Examples of supervisory devices include the
Power Monitor display and monitoring unit, a standard personal computer running the Power Monitor PC communications and supervisory software, and Siemens Microsoft®
Windows™-based SIEServe™ or WinPM™ communications
software.
Control Relays
The 4700 power meter has three control relay options.
•
1.5 Communications and ACCESS
Compatibility
Siemens Energy & Automation, Inc.
2 Installation
2 Installation
2.3 Power Wiring
Connections to the 4700 power meter are made to two terminal strips located on the rear of the unit. Figure provides
4700 power meter terminal block dimensions. Ring or spade
terminals are recommended for all connections.
The phasing and polarity of AC current and voltage inputs,
and their relationship, is critical to the operation of the power
meter. Refer to Figure 2.2 through Figure 2.7 for wiring diagrams to ensure correct installation.
2.3.1
Chassis Ground Connection
You must connect the chassis of the 4700 power meter to
earth ground. A good, low-impedance chassis ground is
essential for the 4700 power meter surge and transient protection circuitry to function effectively. Do not rely on metal
door hinges as a ground path.
Connect the ground wire to the chassis of a standard 4700
power meter using the supplied ground lug attached to one
of the four mounting studs.
In both cases, ensure that the ground lug screw is tightened
securely onto the ground wire, and that the nut is tightened
securely onto the lug.
Note: For the noise and surge protection circuitry
to function correctly, the 4700 power meter
chassis ground lug must be connected to
the switchgear earth ground using a dedicated 14 AWG (or larger) wire. Failure to do
so will void the warranty.
2.1 Location and Mounting
Locate the 4700 power meter in a dry, dirt-free environment,
away from heat sources and very high electric fields. To
operate properly and effectively, environmental conditions
should fall within the guidelines listed in Appendix A.
The 4700 power meter can be panel-mounted for easy
access and viewing. The meter has four studs to facilitate
panel mounting. Figure provides the mounting dimensions
for the 4700 power meter. A five inch clearance behind the
front panel is required for access to wiring.
2.2 Power Supply
The standard 4700 power meter requires 85 to 132 VAC (47
to 440 Hz) or 110 to 170 VDC, both at 0.2 A. The power can
be supplied by a dedicated fused feed, or by the monitored
voltage source (120 V system). Optional power supplies are
available for 24 VDC/48 VDC, and 240 VAC/250 VDC.
Siemens Energy & Automation, Inc.
2.3.2
Voltage Reference Connection
The voltage reference terminal, VREF, of the 4700 power
meter serves as the zero voltage reference for voltage readings. A good, low-impedance VREF connection is essential
for accurate measurement. Use a dedicated 14 AWG wire
for a connection at a point where there are no voltage errors
due to distribution voltage drops.
The connection point for VREF is dependent on the system
configuration. Each of the following configurations is illustrated in Figure 2.2 through Figure 2.7:
•
If the system you want to monitor is a four-wire wye or
single phase, then you must connect the VREF to the
neutral conductor
•
If the system is a three-wire grounded (delta), then you
must connect the VREF to the line transformer neutral
•
For three-wire ungrounded (open delta) systems, and for
systems where VTs are used, you must connect the
VREF to the VT common leads
3
2 Installation
Panel Front
Panel Right Side
4 mounting studs #8-32
0.5" (12 mm) long
7.70"
(196 mm)
12.60"
(320 mm)
4.60"
0.35"
(117 mm)
(9 mm) Behind Panel Depth
Panel Rear
0.50’’
(13 mm)
1.00"
(25 mm)
Edge of
Front Bezel
R11 R12
R13
R21 R22 R23
R31 R32
R33
Control Relays
V1
V2
V3
VREF N/-
Voltage Inputs
L/+
Power
TXD
RXD
1.40"
(36 mm)
GND
4700 Power Meter
5.50’’
6.50’’
(165 mm) (140 mm)
-
RS-485
SHLD
Serial Number:
Software Version:
5.30"
(125 mm)
+
RXD
TXD
Listed Ind.
Contr. Eq. 1T98
LR 57329
SG
RS-232C
WARNING / AVERTISSEMENT
RTS
Auxiliary
Current Inputs
IOut VAux
I11 I12
I21
SIEMENS
ISOCOM
Status Inputs
I22
I31 I32
I41
I42
S1
S2
S3
4720
S4 SCOM
0.375"
(10 mm)
typ.
0.60"
(15 mm)
0.45"
(11 mm)
2.44"
(62 mm)
0.45"
(11 mm)
typ.
4 mounting holes
3/16" (4.8 mm) diameter
Panel Cutout
5.30"
(125 mm)
0.80"
(20 mm)
6.90"
(175 mm)
11.20"
(284 mm)
11.90"
(302 mm)
0.35"
(9 mm)
Figure 2.1 Mounting Dimensions
4
Siemens Energy & Automation, Inc.
2 Installation
2.3.3
Fourth Current Input Connections
The 4700 power meter is equipped with a fourth current
input, labeled I4. This input is typically used to measure the
current flow in the neutral or ground conductor. The use of
this input is optional. If not used, connect the I41 and I42
terminals to earth ground.
The secondary rating of the CT connected to the I4 input
must match the three phase current inputs. This rating
depends on the presently installed input option in the 4700
power meter.
The primary rating for the CT connected to the I4 input can
differ from the three phase inputs, since the I4 input scaling is
independently programmable.
2.3.4
Waveform Capture Connections
The 4700 power meter waveform capture feature allows digital sampling of signals at each of its voltage (V1, V2, V3,
Vaux) inputs and current (I1, I2, I3, I4) inputs. The 4700
power meter uses the V1 input as the triggering reference for
waveform capture, and to maintain phase relationships
between all sampled signals. You must connect the V1 input
for waveform capture to work. No other special wiring considerations are necessary. Waveform capture is accessible
only via communications. See section 6.8 in Chapter 6 for
more information about how to use waveform capture.
2.4 Selecting Voltage and Current
Transformers
Selection of correct current transformers (CTs) and voltage
transformers (VTs) is critical to proper monitoring. This section describes how to choose transformers.
2.4.1
Selecting VTs
The requirement and selection of VTs depends on three criteria: the system monitored, the voltage levels monitored, and
the model of the 4700 power meter.
VT quality directly affects system accuracy. Therefore, for
valid Volts, kW and PF readings, the VTs must provide good
linearity and maintain the proper phase relationship between
voltage and current. Instrument Accuracy Class 1 or better
is recommended.
2.4.2
Selecting CTs
The 4700 power meter uses CTs to sense the current in each
phase of the power feed. The selection of the CTs is important because it directly affects accuracy.
The CT secondary rating is always 5 A with a burden capacity greater than 3 VA (burden is the amount of load fed by the
CT, measured in Volt-Amps).
Normally, the CT primary rating is selected equal to the Amp
rating of the power feed protection device. However, if the
anticipated peak load is much less than the rated system
capacity, then improved accuracy and resolution is obtained
by selecting a lower rated CT. In this case, choose the CT
size equal to the maximum anticipated peak current plus
25%, rounded up to the nearest standard CT size available.
Other factors affect CT accuracy. Because long cable runs
contribute to inaccuracy, try to minimize the length of the CT
cable. Also, the CT burden rating must exceed the combined burden of the 4700 power meter plus cabling and any
other connected devices.
VT and CT Considerations
Protect all phase voltage leads with breakers or fuses at their
source. In cases where VTs are required and the power rating of the VTs is over 25 W, fuse the secondaries.
Connect CTs to the device via a shorting block or test block
to facilitate safe connection and disconnection.
Refer questions regarding proper working procedures to
qualified personnel.
For connecting directly to 120/208 VAC systems, the 120
VAC (full scale) input model is used. It is also used for systems with VTs having a 120 VAC secondary. For connecting
directly to a 277/480 VAC system, the 277 VAC (full scale)
input model is used. For connecting a 347/600 VAC system,
the 347 VAC (full scale) input model is used. If system voltages are over 347/600 VAC, then VTs are required.
VTs are used to scale down the system voltage to 120 VAC
full scale. The system voltage is line-to-neutral (L-N) for wye
systems or line-to-line (L-L) for delta systems. 120 VAC is the
nominal scale input of the 4700 power meter.
The VTs are selected as follows:
a.
Wye (star): VT primary rating is the system L-N voltage
or nearest higher standard size. VT secondary rating is
120 V.
b.
Delta: VT primary rating is the system L-L voltage. VT
secondary rating is 120 V.
Siemens Energy & Automation, Inc.
5
2 Installation
2.5 Connecting to 3-Phase, Wye (Star)
Systems
tem is a 277/480 or 347/600 V system, then use the
277 VAC or 347 VAC input models connected directly.
Without VTs
For a four-wire wye system, the 4700 power meter senses
both the line-to-neutral (or ground) voltage and the current of
each phase. This is the equivalent of a three-element metering configuration.
Note: Although the 277 VAC and 347 VAC models
can be connected directly, VTs may be
required to meet local electrical codes when
the 4700 is panel mounted.
If the power system you want to monitor is a 120/208 V system, then use the standard 120 VAC input model with direct
sensing of each phase, without the need for VTs. If the sys-
The wiring diagram for these voltage ranges is shown in Figure 2.2. Set VOLTS MODE to 4W-WYE as described in
Chapter 6, Programming.
Line
A
B
C
N
Supply Power
2A Fuses
VREF
N/-
V3
L/+
V2
V1
Chassis
Ground
Lug
Export
Control Relays
Voltage Inputs
Import
Auxiliary Current Inputs
Power
RS-232C RS-485 G
SIEMENS
4700 Power Meter
Switchgear
Chassis
Ground
Status Inputs
CT Shorting Switch
or Test Block
I11
I12
I21
I22
I31
I32
I41
I42
Neutral Current Input is Optional
CTs
Switchgear Chassis
Ground
Load
Volts mode is four wire wye. VOLTS MODE: 4W-WYE<0>
Supported Models:
≤120VAC Line-to-Neutral/208VAC Line-to-Line Systems: Basic Model
≤277VAC Line-to-Neutral/480VAC Line-to-Line Systems: 277 Option
≤347VAC Line-to-Neutral/600VAC Line-to-Line Systems: 347 Option
Figure 2.2 Four-Wire Wye: Three-Element Direct Connection
6
Siemens Energy & Automation, Inc.
2 Installation
With VTs
For wye system voltages over 347/600 V, you must use VTs.
Wire both the VT primary and secondary in a wye (star),
exactly as shown for correct operation.
This configuration is shown in Figure 2.3. Set the VOLTS
MODE to 4W-WYE as described in Chapter 6, Programming.
Line
A
B
C
N
VREF
Fuses
VTs
2A Fuses
V3
Supply Power
N/-
V2
L/+
V1
Chassis
Ground
Lug
Export
Switchgear
Chassis
Ground
Import
CT Shorting Switch
or Test Block
I11
I12
I21
I22
I31
I32
I41
I42
Neutral Current Input is Optional
CTs
Switchgear Chassis
Ground
Load
Volts mode is four wire wye. VOLTS MODE: 4W-WYE<0>
Supported Models:
≤120VAC Line-to-Neutral/208VAC Line-to-Line Systems: Basic Model
Figure 2.3 Four-Wire Wye: Three-Element Connection Using Three VTs
Siemens Energy & Automation, Inc.
7
2 Installation
Three-Wire Grounded Wye Without VTs
When the starpoint of a three-wire wye system is grounded,
connect the 4700 power meter directly without the use of
VTs. Ensure that the voltages are within the input range of the
unit.
This configuration is shown in Figure 2.4. Set the VOLTS
MODE to 4W-WYE as described in Chapter 6, Programming.
Line
N
A
B
Supply Power
C
VREF
2A Fuses
V3
N/L/+
V2
V1
Chassis
Ground
Lug
Export
Switchgear
Chassis
Ground
Import
CT Shorting Switch
or Test Block
I11
I12
I21
I22
I31
I32
I41
CTs
I42
Neutral Current Input is Optional
Switchgear Chassis
Ground
Load
Volts mode is four wire wye. VOLTS MODE: 4W-WYE<0>
Supported Models:
≤120VAC Line-to-Neutral/208VAC Line-to-Line Systems: Basic Model
≤277VAC Line-to-Neutral/480VAC Line-to-Line Systems: 277 Option
≤347VAC Line-to-Neutral/600VAC Line-to-Line Systems: 347 Option
Figure 2.4 Three-Wire Grounded Wye: Three-Element Direct Connection
8
Siemens Energy & Automation, Inc.
2 Installation
2.6 Connecting to Three-Phase, Delta
Systems
Figure 2.5 shows an ungrounded delta connection using
three CTs. Set the VOLTS MODE to DELTA as described in
Chapter 6, Programming.
2½-Element Connection
For ungrounded (floating) three-wire delta systems, the 4700
power meter always requires two VTs and senses the line-toline voltages between each of the phases.
Connect the 4700 power meter in one of two ways: using
two or three CTs.
Optional VT Polarity
Line
A
B
C
Supply Power
VREF
Fuses
VTs
2A Fuses
V3
N/L/+
V2
V1
Chassis
Ground
Lug
Export
Switchgear
Chassis
Ground
Import
CT Shorting Switch
or Test Block
I11
I12
I21
I22
I31
I32
I42
I41
CTs
Switchgear Chassis
Ground
Load
Switchgear Chassis
Ground
Volts mode is delta. VOLTS MODE: DELTA<1>
Supported Models:
≤120VAC Line-to-Neutral/208VAC Line-to-Line Systems: Basic Model
Figure 2.5 Three-Wire Delta: 2½-Element Connection Using Two VTs and Three CTs
Siemens Energy & Automation, Inc.
9
2 Installation
Two-Element Connection
Figure 2.6 shows an ungrounded delta connection using
two CTs. Set the VOLTS MODE to DELTA as described in
Chapter 6, Programming.
Optional VT Polarity
Line
A
B
C
Supply Power
VREF
Fuses
VTs
2A Fuses
V3
N/L/+
V2
V1
Chassis
Ground
Lug
Export
Switchgear
Chassis
Ground
Import
CT Shorting Switch
or Test Block
I11
I12
I21
I22
I31
I32
I42
I41
CTs
Load
Switchgear Chassis
Ground
Switchgear Chassis
Ground
Volts mode is delta. VOLTS MODE: DELTA<1>
Supported Models:
≤120VAC Line-to-Neutral/208VAC Line-to-Line Systems: Basic Model
Figure 2.6 Three-Wire Delta: 2-Element Connection Using Two VTs and Two CTs
10
Siemens Energy & Automation, Inc.
2 Installation
2.7 Connecting to Single Phase, Three-Wire
Systems
Two-Element Connection
For single phase systems, connect the two voltage phases
(180 degrees respectively) to the V1 and V2 inputs of the
4700 power meter. Also, connect the outputs of the two
corresponding current transformers to the I1 and I2 input
pairs.
The connections are illustrated in Figure 2.7. Note that the
V3 input and I3 input pair are unused and grounded. For single-phase systems, set the VOLTS MODE of the 4700 power
meter to SINGLE as described in Chapter 6, Programming.
Line
A
B
N
Supply Power
VREF
N/-
V3
2A Fuses
L/+
V2
V1
Chassis
Ground
Lug
Export
Switchgear
Chassis
Ground
Switchgear
Chassis
Ground
Import
CT Shorting Switch
or Test Block
I11
I32
I12
I31
I21
I22
I41
I42
Neutral Current Input is Optional
Switchgear Chassis
Ground
CTs
Switchgear
Chassis
Ground
Load
Volts mode is single phase. VOLTS MODE: SINGLE<2>
Supported Models:
≤120VAC Line-to-Neutral/208VAC Line-to-Line Systems: Basic Model
≤277VAC Line-to-Neutral/480VAC Line-to-Line Systems: 277 Option
≤347VAC Line-to-Neutral/600VAC Line-to-Line Systems: 347 Option
Figure 2.7 Three-Wire Single Phase: Two-Element Direct Connection
Siemens Energy & Automation, Inc.
11
2 Installation
12
Siemens Energy & Automation, Inc.
3 Communications Wiring
3 Communications Wiring
To re-install the card:
The communications option of the 4700 power meter
includes a communications card. The card is field configurable to allow the 4700 power meter to communicate using
either the EIA/TIA-232 (RS-232) or EIA/TIA-485 (RS-485)
standard. Optical coupling provides full isolation between the
RS-232 or RS-485 communications lines and the metering
equipment. Internal circuitry protects against common mode
voltages or incorrect connection of the optional communications card. All inputs pass the ANSI/IEEE C37-90A-1989
tests for withstanding surge and fast transient.
1.
Make sure that the power to the 4700 power meter is
off.
2.
Insert the communications card into the 4700 power
meter, ensuring that the circuit card is oriented such that
it will mate properly with the edge connector on the
main board inside the 4700 power meter.
Note: The card is polarized (keyed) to ensure it
may only be installed in the correct orientation.
The following sections describe configuration instructions
and wiring requirements for direct connection to a master
computer station.
3.
The communications card is shipped with a label affixed to
the mounting plate indicating the communications mode
(RS-485 or RS-232) set at the factory. If the mode is incorrect for your application, refer to the following section for
changing the configuration.
Align the holes in the mounting plate of the card with the
mounting holes in the rear cover of the main chassis
while lowering the card toward its seating. A correct
alignment will allow the card edge to mate with the edge
connector inside the main chassis.
4.
Once the board is resting in proper alignment on the
edge connector, carefully press down to plug the card
into the edge connector.
5.
Install the four mounting screws into the mounting plate
to secure the card.
3.1 Configuring the Communications Card
This section describes how to change the communications
mode of the 4700 communications card. You can select
RS-232 or RS-485 lines by switching a jumper block on the
card. The presently selected communications mode may be
viewed from the power meter front panel, or by removing the
card and examining the position of the jumper block. (See
Chapter 5, Operator Interface for instructions on how to
use the power meter front panel to display the communications mode.)
The card is now ready for use.
Terminal Strip
Mounting Plate
To remove the card for configuration:
1.
Turn off the power to the 4700 power meter.
2.
Remove the four machine screws holding the rectangular communications card mounting plate to the 4700
power meter case back cover.
3.
Carefully pull the plate away from the main chassis to
remove the card.
To configure the card:
The circuit board of the communications card has a jumper
labelled J1. This jumper has two positions, labelled “RS485”
and “RS232,” which determine the communications mode.
Figure 3.1 illustrates the jumper position required for
RS-485 or RS-232 mode. Move the jumper to the correct
position.
Jumper in left position
RS-232
Jumper in right position
RS-485
Figure 3.1 Communications Card Jumper Configuration
Siemens Energy & Automation, Inc.
13
3 Communications Wiring
3.2 Terminal and LED Indicator Functions
3.3 RS-232 Connections
The optional communications card provides a barrier-style
terminal strip (see Figure 3.2). Terminal functions include:
Figure 3.3 illustrates the wiring requirements for connection
of the 4700 power meter using RS-232 communications.
This can include a local direct connection to a computer or
other device, or a remote connection via modem.
Ground
GND
Chassis Ground
RS-485
SHLD
RS-485 Shield
(electrically connected to
chassis ground)
RS-485 Data Minus
RS-485 Data Plus
+
RS-232
RXD
RS-232 Receive Data
(that is, receive data into device)
RS-232 Transmit Data
(that is, transmit data out of device)
RS-232 Signal Ground
RS-232 Request To Send
TXD
SG
RTS
Two LED indicators, TXD and RXD, show activity on the
RS-232 or RS-485 communications lines and can be used
to verify correct communications operation. The TXD indicator flashes when data is being sent out by the device. The
RXD indicator flashes when data is being received by the
device.
The 4700 power meter supports 19.2 Kbaud operation. This
applies to both RS-232 and RS-485 standards.
Note:
For information on remote connections via
modem (telephone, fiber optic, radio, and
so on), contact Siemens for a detailed
application note.
The RS-232 standard allows only a single point-to-point
communication connection. Using this method, only one
RS-232 equipped device may be connected to the serial
port of the computer, modem, or other device.
The cable used between the computer and the modem (if
used) is a standard RS-232 communications cable with a
maximum length of 50 feet (15.2 meters). Refer to the installation manuals for each device for cable requirements.
The cable used between the computer or modem and the
4700 power meter is a custom RS-232 cable. One end is
equipped with a DB-25 or DB-9 plug (male) or socket
(female) connector. The connector required depends on the
mating computer or modem serial port connector. The other
end of the cable consists of discrete wires which connect to
the RS-232 terminals of the communications card of the
4700 power meter. Cable length is 50 feet (15.2 meters)
maximum.
4700 Power Meter
TXD
RXD
GND
TX SG RX
SHLD
+
RS-232 (50 ft. maximum)
RS-485
-
Personal Computer (DTE)
RXD
Computer
4700
Power Meter
TX
RX
Ground
RTS
CTS
DSR
DTR
RX
TX
SG
SG
RS-232-C
TXD
RTS
SIEMENS
ISOCOM
Figure 3.2 Communications Card Terminal Block
14
Figure 3.3 RS-232 Communications Connections
Siemens Energy & Automation, Inc.
3 Communications Wiring
1
2
3
4
1 2 3 4 5 6 7 8 9 10 11 12 13
5
DB-25
DB-9
6
7
8
14 15 16 17 18 19 20 21 22 23 24 25
9
(Seen From Computer)
Pin
Computer (DTE)
1
2
3
4
5
6
7
8
9
RLSD
RX
TX
DTR
Ground
DSR
RTS
CTS
RI
(Seen From Computer)
Pin
Computer (DTE)
Isolated Multi-Drop
Converter
1
2
3
4
5
6
7
8
20
22
Ground
TX
RX
RTS
CTS
DSR
Ground
RLSD
DTR
RI
Ground
RX
TX
RTS
CTS
DSR
Ground
RLSD
DTR
RI
Figure 3.4 RS-232 Cable Wiring Specifications
Figure 3.3 and Figure 3.4 illustrate the RS-232 cable configurations and wiring connections.
If connected directly to a computer’s RS-232 port, the TXD
and RXD leads may need to be reversed at the remote
device, depending on whether the PC RS-232 port is configured as DCE or DTE.
3.4 RS-485 Connections
RS-485 communications allow multiple devices to be connected on the same bus (see Figure 3.5). Up to 32 devices
can be connected on a single RS-485 bus which consists of
a shielded twisted pair cable. The overall length of the
RS-485 cable connecting all devices cannot exceed 4000
feet (1220 meters).
To connect an RS-485 communications bus to a computer
or other RS-232 equipped device, an RS-232 to RS-485
converter is required, such as the Siemens Isolated MultiDrop™ converter. The Isolated Multi-Drop converter offers
four RS-485 ports that can each support up to 32 devices.
Devices connected on the bus, including the 4700 power
meter converter(s), and other instrumentation, must be wired
as follows:
1.
2.
Use a good quality shielded twisted pair cable for each
RS-485 bus. It is recommended that 22 AWG (0.6 mm)
or larger conductor size be used.
Ensure that the polarity is correct when connecting to
the RS-485 port (+) and (-) terminals of each device.
Siemens Energy & Automation, Inc.
RS-232
(50 ft. maximum)
Isolated Multi-Drop
Converter
Personal Computer (DTE)
Computer
Isolated
Multi-Drop
Converter
TX
RX
Ground
RTS
CTS
DSR
DTR
RLSD
RX
TX
Ground
RTS
CTS
DSR
DTR
RLSD
4700 Power Meter
RS-485 Cable
22 AWG shielded,
twisted pair
4000 ft. maximum
To Other
Devices
Figure 3.5 RS-485 Communications Connections
15
3 Communications Wiring
3.
The shield of each segment of the RS-485 cable must
be connected to ground at one end only.
Note: Do not connect ground to the shield at both
ends of a segment. Doing so allows ground
loop currents to flow in the shield, inducing
noise in the communications cable.
4.
It is recommended that an intermediate terminal strip be
used to connect each device to the bus. This allows the
easy removal of a device for servicing if necessary.
5.
Cables should be isolated as much as possible from
sources of electrical noise.
Devices on an RS-485 bus are connected in a point-to-point
configuration with the (+) and (-) terminals of each device
connected to the associated terminals on the next device.
16
Siemens Energy & Automation, Inc.
4 Optional Wiring
4 Optional Wiring
In addition to current and voltage inputs, the 4700 power
meter has connections for status and auxiliary voltage inputs,
control relays, and auxiliary current outputs. These additional
connections add to the functionality of the meter.
When the external contact is open, there is no current flow
and the status input registers INACTIVE. When the external
contact closes, the current flow from the external supply
causes the status input to register ACTIVE.
Note:
4.1 Status Inputs
The maximum pulse count for the S1
counter is 65,533 before rollover occurs.
This section describes and illustrates wiring connection
methods and applications for the status inputs. Section 6.6
in Chapter 6 describes the operation of the status inputs.
The 4700 power meter uses a current-sensing technique to
monitor the status of an external dry contact or the presence
of an external voltage as described in the following sections.
1
2
3
+
4
-
External Dry Contacts
20-277
VAC/VDC
Power
Supply
Contacts Open = Inactive
Contacts Closed = Active
4700 Power Meter
Optically Coupled
Solid State Relays R
Status Inputs
S1
R
R
R
S2
S3
S4
SCOM
Figure 4.1 Status Input Connections (Dry Contact Sensing)
4.1.1
Dry (Volts Free) Contact Sensing
Dry contact sensing is performed using external excitation as
illustrated in Figure 4.1. External excitation is provided via
the SCOM terminal. A 20 to 277 VAC/VDC external power
source is required. Various possibilities include:
a.
An auxiliary 24 VDC power supply
b.
A 24 to 277 VAC transformer with fused output
c.
Direct 120 VAC or 240 VAC fused power
Siemens Energy & Automation, Inc.
17
4 Optional Wiring
4.1.2
Voltage Sensing
Status inputs can sense the presence or absence of voltage
on a power feeder. You can monitor whether a piece of
equipment, such as a motor, is energized (see Figure 4.2).
4700 Power Meter
Optically Coupled
Solid State Relays R
When the motor is on, there is voltage at the sense point,
and the status input registers ACTIVE. When the motor is
off, there is no voltage at the sense point, and the status
input registers INACTIVE.
Status Inputs
R
S1
R
S2
R
S3
S4
SCOM
Line
Ground
Contactor
0.25 A Fuse
Motor
Motor On:
Input(s) >20 VAC or +20 VDC = Active
Motor Off:
Input(s) <6 VAC or +6 VDC = Inactive
Figure 4.2 Status Input Connections (Voltage Sensing)
4.2 Control Relay Connections
The 4700 power meter provides 3 Form C electromechanical
control relays. Figure 4.3 illustrates the wiring connection
requirements for the control relays. Refer to section 6.4 in
Chapter 6 for more information on operating the relays.
4.2.1
Relay Application Precautions
In applications where the relays are used to perform crirical
equipment control operations, such as breaker trip, the
important precautions described below should be followed.
6.
Connection to the external equipment should be made
via an intermediate mechanism that allows relay control
to be completely disabled for commissioning and servicing.
The example shown in Figure 4.3 forces the normally
on load on, and the normally off load off when the relays
are disabled.
18
7.
Following initial power up, the 4700 power meter should
be programmed (see Chapter 6), including all required
setpoints for setpoint controlled relay operations (see
Chapter 7).
8.
The relay outputs of the 4700 power meter should be
tested to ensure that setpoint or manual control conditions are occurring as expected.
Siemens Energy & Automation, Inc.
4 Optional Wiring
9.
Once correct relay operation has been verified, relay
control of the external equipment can be enabled.
N
LOAD
Normally ON
120 VAC
10A FUSE
LOAD
N
Normally OFF
Relay Control
Enable/Disable
(shown enabled)
Control Relays
Voltage Inputs
Power
RS-232C RS-485 G
SIEMENS
4720 Power Meter
Auxiliary Current Inputs
Status Inputs
4700 Power Meter
Operational Block
Diagram
Primary Protection
RX1
The relays of the 4700 power meter should not be used for
primary protection functions. These include applications
where the device would be providing:
•
Overcurrent protection on circuit breakers.
•
Protection of people from injury. If failure of the device
can cause injury or death, the 4700 power meter should
not be used.
•
Energy limiting. If failure of the device will cause sufficient
energy to be released that a fire is likely, the 4700 power
meter should not be used. In electrical systems, energy
limiting is normally provided by circuit breakers or fuses.
Secondary Protection
RX2
N/O
State:
Inactive
Active
Pulse
RX3
N/C
Rx1/Rx2
Open
Closed
Closed for
Duration of
Pulse
Rx2/Rx3
Closed
Open
Open for
Duration of
Pulse
Notes:
1. Relays are Form C dry contact rated at
277 VAC or 24 VDC at 10 Amps.
2. Only relevant 4700 power meter terminal
block connections are illustrated.
The 4700 power meter can be used for secondary (that is,
backup) protection functions. Secondary protection includes:
Figure 4.3 Control Relay Connections
•
Situations where the 4700 power meter is backing up a
primary protection device (shadow protection), such as
an overcurrent relay.
•
Situations where the 4700 power meter is protecting
equipment, not people. This typically includes applications such as over/under voltage, reverse power flow,
and so on.
Siemens Energy & Automation, Inc.
19
4 Optional Wiring
4.3 Auxiliary Voltage Input
4.4 Auxiliary Current Output
Figure 4.4 illustrates two possible wiring connection methods and applications for the VAUX input. Section 6.3.1 in
Chapter 6 describes the operation of this input.
Figure 4.5 illustrates two possible wiring connection methods and applications for the IOUT output. Section 6.3.2 in
Chapter 6 describes the operation of this input.
Note: VAUX is a non-isolated input. If full isolation is
required, use an intermediate isolation
transducer.
Note: IOUT is a non-isolated input. If full isolation is
required, use an intermediate isolation
transducer.
VAux Application: Temperature Sensing
Temperature
Probe
+
-
Temperature
Transducer
IOut Application: Chart Recorder or RTU Input
Note:
250Ω maximum load
0–20 mA
or
4–20 mA
Input
Chart Recorder
or
RTU Input
VAux Application: Battery Voltage Sensing
IOut Application: Analog Meter
+
2.3 kΩ
1W
Note:
Resistors selected to
give nominal 1V.
24 VDC
Generator
Start
Battery
100 Ω
1W
-
Figure 4.4 Auxiliary Voltage Input Connections
20
0-20 mA
DC Meter
Figure 4.5 Auxiliary Current Output Connections
Siemens Energy & Automation, Inc.
5 Operator Interface
5 Operator Interface
5.2 Front Panel Operation
This chapter describes the following:
The 4700 power meter provides a unique and very flexible
user interface. One of its front panel features is the large,
high-visibility, 20-character vacuum fluorescent display. The
other feature is the row of four long-life, stainless steel membrane buttons for parameter selection and local programming functions. See Figure 5.2 for an illustration of the front
panel of the 4700 power meter.
•
Power-up procedure
•
Front panel operation and display mode
For a description of the 4700 power meter programming
mode and instructions on how to program the meter, refer to
Chapter 6, Programming.
5.1 Start Up
After all installation wiring is complete and has been double
checked, the unit may be powered up by applying the
appropriate voltage to the power input terminals.
The 4700 power meter first enters its display mode, presenting Volts-Amps-Power Function. The power function displayed on power up is kW average, totalled for all phases
(see Figure 5.1). The values initially appearing may not be
correct, since the unit has not been properly programmed
with the correct information. Refer to Chapter 6, Programming, for instructions on how to program the meter.
The display can present a wide variety of information in many
different formats. Readings of up to nine digits including any
floating point decimals can be displayed. The type of information and formats available are described below.
5.2.1
The front panel display (on power up) presents volts, amps
and power function for the selected phase. The Phase button is used to advance through each phase in sequence,
while a selection of power functions can be accessed using
the Function button. The format of the phase labels and
numeric readings can be programmed to conform to international conventions (see section 6.3.3).
5.2.2
Power Functions
Volts
RMS
Phase
Amps
RMS
Note: While viewing a full-width display, press the
Phase button to return to the standard
Volts-Phase-Amps display.
Indicates 260 Volts, 1700 Amps, and 1241 kW for Phase A .
5.2.3
Indicates 29.4 MW for phase A, thermal demand, maximum.
Full Width Display
Very large measured values (for example, kW hr) and parameters with large display labels are presented using the entire
display.
Standard Phase Display
Full Width Display
Standard Phase Display
Three-Phase Displays
Concurrent display of readings for all three phase voltages or
currents is possible.
5.2.4
Phase Button
Three Phase Display
The Phase button selects the phase for which the volt and
amp values are displayed. The asterisk (*) symbol indicates
the average volts and amps values are being displayed.
Indicates 483 Volts, phase A, 485 Volts, phase B, and 479 Volts,
phase C.
•
If VOLTS MODE = 4W-WYE, the Phase button steps
through all line-to-neutral values, the line-to-neutral
average, and all line-to-line values. The line-to-line values are displayed with a comma following the phase
indicator (for example, A,).
•
If VOLTS MODE = DELTA, the Phase button steps
through all line-to-line values for all the phases, and also
gives the average of the three phases.
•
If VOLTS MODE = SINGLE, the Phase button steps
through the sequence: A, B, L. An A indicates voltage
and current for the A phase. The B indicates voltage
and current for the B phase. An L indicates the line-toline voltage, and also the average of the two line currents.
Figure 5.1 Front Panel Display Modes
Siemens Energy & Automation, Inc.
21
5 Operator Interface
5.2.5
Function Button
A preset list of useful power function parameters is available
via the Function button. Press the Function button to
advance through each measured parameter.
For per-phase values displayed using the Function button,
the Phase button can be used to advance the display
through each phase.
5.2.6
Minimum and Maximum Buttons
The Minimum and Maximum buttons display the minimum
and maximum values of volts, amps, and power functions as
indicated in the list below. Min/Max values are displayed for
three seconds before the real-time display returns. The values displayed are minimums and maximums logged since
the last CLEAR MAX/MIN? function (see Table 5.1).
Table 5.1 Display Labels for Minimum/Maximum Values
The following is the complete sequence of power function
parameters accessible using the Function button:
Function
Label
•
kW per phase
kilowatts
KW (MW)
•
kVAR per phase
kilovolt-amperes
KVA (MVA)
•
kVA per phase
kilovolt-amperes (reactive)
KQ
•
Power Factor per phase
power factor
PF
•
Current I4
frequency
HZ
•
Frequency (phase A)
kilowatt-demand
KWD (MWD)
•
kW demand
amperes-demand
AMD
•
Amp demand
volts (VAUX)
VX
•
Voltage VAUX
fourth current input
I4
•
kW hours
kilowatt-hours
KWHRS
•
kVAR hours
kilovolt-ampere (reactive) hours
KVARHRS
Phase indicator. Comma
indicates line-to-line values.
Four-digit Volts display
Four-digit Amps display
Five-digit plus three-character
power display
Display mode
button functions
Programming mode
button functions
Press and hold Function and Minimum
to toggle between Programming and
Display modes.
Figure 5.2 Front Panel Buttons
22
Siemens Energy & Automation, Inc.
5 Operator Interface
5.3 Power Reading Polarities
Figure 5.3 illustrates how the 4700 power meter interprets
and displays signed (positive or negative) values for power,
energy import or export indication, and leading or lagging
indication of power factor.
The polarity of energy import or export can be reversed by
reversing the polarity of the CTs connected to the power
meter.
Line
Load
Export
Reverse
Negative
Import
Forward
Positive
Ø=90°, +kVAR,
kVARh Imported,
Power Factor = 0
Ø=90 to 180°
Power Factor Lead
Ø=180°, -kW,
kWh Exported,
Power Factor = 1
Ø=0 to 90°
Power Factor Lag
Phase Angle Ø
Ø=180 to 270°
Power Factor Lag
Ø=0°, +kW,
kWh Imported,
Power Factor = 1
Ø=270 to 360°
Power Factor Lead
Ø=270°, -kVAR,
kVARh Exported,
Power Factor = 0
Figure 5.3 Power Reading Polarity Conventions
Siemens Energy & Automation, Inc.
23
5 Operator Interface
Notes:
24
Siemens Energy & Automation, Inc.
6 Programming
6 Programming
6.1.1
Basic device programming can be performed quickly and
easily from the front panel (called local programming) or via
the communications port using a portable or remotely
located computer. Basic setup parameters include scaling
factors for the voltage and current inputs, and the voltage
mode (wye, delta, and so on). Setup and other critical information are stored in nonvolatile memory and are not lost if
power to the unit is turned off. All programming is password
protected.
In programming mode, the front panel buttons assume new
programming functions. The label below each button indicates its alternate function. For example, the Maximum button used in display mode changes to the Parameter Select
button in programming mode.
WinPM software fully supports 4700 power meter programming, providing a number of parameter screens which make
setup quick and easy. (The open communications protocol of
the 4700 power meter also allows free access to all programming parameters using any compatible third-party system.)
A complete list of all programmable setup parameters is provided in section 6.9.
This manual describes procedures for programming the
4700 power meter from its front panel only. For information
on programming via communications using WinPM software,
refer to the documentation for WinPM.
6.1 Programming Mode
To program the setup parameters of the 4700 power meter
from the front panel, the meter must be in programming
mode. Enter programming mode by pressing the Function
and Minimum buttons at the same time (see Figure 6.1). The
front panel displays “PROGRAMMING MODE.” Avoid pressing the Function button by itself because this will alter the
selected parameter.
To return to display mode, press the Function and Minimum
buttons again.
Programming Button Functions
Parameter Select
Selects which parameter is displayed. When displaying
available parameters, the list wraps around to the beginning when the end is reached. If you miss a displayed
parameter, press the Parameter Select button until the
one you want comes back around.
Cursor
Moves the cursor left one digit. The cursor position
wraps around to the right of the number if advanced
past the left-most digit.
Increment
Increments the digit at the cursor, advances through a
number of preset values, or toggles a yes/no option.
Decrement
Decrements the digit at the cursor, advances through a
number of preset values in reverse order, or toggles a
yes/no option.
6.1.2
Entering the Password
At shipping, the 4700 power meter password is set to zero
(0). In programming mode, press the Parameter Select button until the PASSWORD parameter appears. Enter the
password using the Cursor and Increment buttons. You must
enter the password to change any parameter values,
although you can view them on the front display panel at any
time. You can also change the password as described in the
next section. If the password is lost or forgotten, contact Siemens customer service.
6.1.3
Changing the Password
To change the password, use the following procedure.
1.
Enter programming mode by pressing and holding
simultaneously the Function and Minimum buttons (see
Figure 6.1).
2.
Press Parameter Select until the PASSWORD parameter
appears. Enter the current password using the Cursor
and Increment buttons.
3.
Press Parameter Select repeatedly until the PASSWORD parameter appears again.
4.
Enter the new password using the Cursor and Increment buttons.
5.
Return to display mode. The new password is now in
effect.
Figure 6.1 Entering Programming Mode
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6 Programming
6.1.4
Skipping Over the Setpoint Parameters
If the SETPOINT NUM parameter is 00, and the Parameter
Select button is pressed, the setpoint parameters are passed
over.
6.2 Basic Settings
The VOLT SCALE and AMPS SCALE parameters of the 4700
power meter must correspond with the full scale levels that
are to be measured. The scale is the value the meter displays
when the input is at full scale.
Figure 6.3 and Figure 6.4 show a step-by-step example of
how to program the operating parameters from the front
panel. The example given shows how to set the VOLTS
MODE to DELTA, the VOLT SCALE to 277, and the AMPS
SCALE to 2000.
6.2.1
Volt Scale
In a direct connect configuration, the VOLT SCALE is normally set to 120 for a 120 VAC system, 277 for a 277 VAC
system, or 350 for a 350 VAC system. If VTs are used for
connection to higher voltage systems (using a 120 VAC
model), then set the VOLT SCALE to the primary rating of the
VT. Note that this applies only if the VTs’ secondaries are
rated at 120 VAC. If not, then the following formula is used to
determine the required VOLT SCALE:
VOLT SCALE =
6.2.2
VT Primary Rating x 120 VAC
VT Secondary Rating
Amps Scale
Set the AMPS SCALE to the primary rating of the CTs used.
This applies only if the CTs are rated for a 5 A full scale output. If not, the following formula is used to determine the
required AMPS SCALE:
AMPS SCALE =
CT Primary Rating x 5A
CT Secondary Rating
Note: The fourth CT secondary rating must equal
the phase CTs.
6.2.3
Volts Mode
Note that this 1 V input differs from the 120 V input for V1, V2
and V3.
6.3.2
Auxiliary Current Output Operation
The 4700 power meter can include an analog current output,
which is programmable to deliver a current proportional to
any measured parameter. Maximum load on the current output is 250 resistive. The current output is set in programming mode. You must set the following parameters:
I OUT KEY
This label specifies the measured parameter for which
the current output is proportional. Table 6.2 shows the
labels for I OUT KEY corresponding to each measured
parameter.
I OUT SCALE
This value specifies the indicated value for the full scale
output of IOUT.
I OUT RANGE
This value indicates whether the output mode is 0 to 20
mA or 4 to 20 mA.
I OUT RANGE = 0
indicates 0 to 20 mA
I OUT RANGE = 1
indicates 4 to 20 mA
IOUT POWER FACTOR
Since the scale for Power Factor is essentially two 0.0-1.0
scales (one for leading and one for lagging), the meter must
combine these into one scale. To do this, the meter represents the entire Power Factor scale as 0-200, where 0 is 0.0
lagging and 200 is 0.0 leading (see Figure 6.2).
The 4700 power meter allows the IOUT scale to be customized so that the top end (20mA) can be programmed to any
value on the 0-200 scale, and the bottom end (0mA) is fixed
to 0. In Figure 6.2, 4mA is set to 50 (which is 0.50 lagging),
and 20mA is set to 100 (which is 1.00, or unity).
IOut output to analog meter
20mA
4mA
Set the VOLTS MODE according to the system connection
configuration. Refer to Chapter 2, Installation, and to Figure 2.2 through Figure 2.7 for more information.
Values assigned internally by the meter
The VOLTS MODE options are:
Actual Power Factor value
0.0
0.50
Lagging
4W-WYE, DELTA, SINGLE, DEMO
6.3 Additional Settings
6.3.1
1.00
0.50
Leading
0.0
Figure 6.2 Power Factor Scale Representation
Auxiliary Voltage Input Operation
The 4700 power meter uses an auxiliary voltage input that
allows measurement and display of an external voltage (1
VAC/VDC nominal, 1.25 VAC/VDC maximum). The VAUX
SCALE parameter specifies what the meter displays with a
1.000 VACRMS/VDC full scale input applied.
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6 Programming
Programming the 4700 Power Meter
Display reads:
Press these buttons:
1
Phase
Function
Minimum
Maximum
Decrement
Increment
Cursor
Parameter
Select
Press the Function and Minimum buttons at the same time to enter programming mode.
2
Phase
Function
Minimum
Maximum
Decrement
Increment
Cursor
Parameter
Select
Press the Parameter Select button twice.
3
Phase
Function
Minimum
Maximum
Decrement
Increment
Cursor
Parameter
Select
Enter the password using the Cursor and Increment buttons.
To enter the default password, 0 (zero), press the Increment button once.
4
Phase
Function
Minimum
Maximum
Decrement
Increment
Cursor
Parameter
Select
Press Parameter Select three times to advance to the Volt Scale setting.
5
Phase
Function
Minimum
Maximum
Decrement
Increment
Cursor
Parameter
Select
Enter a new value (277) for the Volt Scale parameter.
Set the rightmost digit to 7 by pressing the increment button seven times.
6
Phase
Function
Minimum
Maximum
Decrement
Increment
Cursor
Parameter
Select
Press the Cursor button once to move the cursor one digit left.
7
Phase
Function
Minimum
Maximum
Decrement
Increment
Cursor
Parameter
Select
Set the digit under the cursor to 7 by pressing the increment button seven times.
8
Phase
Function
Minimum
Maximum
Decrement
Increment
Cursor
Parameter
Select
Press the Cursor button twice to move to the leftmost digit.
Figure 6.3 Step-by-Step Example Showing How to Program Locally (Steps 1-8)
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6 Programming
Programming the 4700 Power Meter (continued)
Display reads:
Press these buttons:
9
Phase
Function
Minimum
Maximum
Decrement
Increment
Cursor
Parameter
Select
Press Decrement once to set the leftmost digit to 0 (zero).
10
Phase
Function
Minimum
Maximum
Decrement
Increment
Cursor
Parameter
Select
Press Parameter Select to advance to the next parameter.
11
Phase
Function
Minimum
Maximum
Decrement
Increment
Cursor
Parameter
Select
Enter a new value (2000) for the Amps Scale parameter.
Press the Cursor button three times to move the cursor to the leftmost character .
12
Phase
Function
Minimum
Maximum
Decrement
Increment
Cursor
Parameter
Select
Press Decrement three times to set the leftmost digit to 2.
13
Phase
Function
Minimum
Maximum
Decrement
Increment
Cursor
Parameter
Select
Press Parameter Select three times to advance to the next parameter.
14
Phase
Function
Minimum
Maximum
Decrement
Increment
Cursor
Parameter
Select
Press Increment once to set the Volts Mode to Delta.
15
Phase
Function
Minimum
Maximum
Decrement
Increment
Cursor
Parameter
Select
Press the Function and Minimum buttons at the same time to return to display mode.
Figure 6.4 Step-by-Step Example Showing How to Program Locally (Steps 9-15)
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6 Programming
6.3.3
Display Format
The front panel display can present numeric information and
phase labels in formats that reflect various world standards.
The FORMAT parameter allows the user to select formats for
numeric information and phase labels. This parameter is displayed as:
FORMAT= ABC 1,234.5
The three-letter prefix specifies the phase labels. The possible values are ABC (default), XYZ, RBY and RST.
The five-digit integer specifies the display numbers. The formats for possible values are:
a.
A comma for the thousands delimiter (radix) and a decimal point for the decimal delimiter. Example: 1,234.5
This is the default.
b.
No thousands delimiter and a comma for the decimal
delimiter. Example: 1234,5
The Cursor button cycles between the phase label parameter and display number parameter. The Increment or Decrement buttons modify the values for selected parameters.
6.4.3
Setpoint Relay Operation
For setpoint operation, the relays function in latch or pulse
mode. In latch mode, the relay operates for the duration that
the assigned setpoint is active (normally open contacts are
closed). In pulse mode, when the setpoint is active, the relay
operates for a specific pulse duration.
Set Rx MODE to SETPOINT for setpoint operation. Set Rx
VALUE to latch mode (Rx VALUE = 0), or to pulse duration (in
seconds) for pulse mode operation.
Note: While you are programming the 4700 power
meter via the front panel or communications, no setpoint-controlled relay operations occur until you complete the
programming sequence. The 4700 power
meter then assesses the status of each setpoint and performs any required operations.
6.4.4
kVARH and kWH Pulse Operation
When a relay is configured for kVARH or kWH pulse operation, the pulses are based on the total energy imported (forward) and exported (reverse). Set Rx MODE to KVARH
PULSE or KWH PULSE. In these modes, use Rx HRS/
PULSE to set the number of unit-hours between pulses.
6.4 Control Relay Operation
The 4700 power meter contains three control relays (R1 to
R3), which can be used for a variety of purposes, such as
activation of alarms or load control. Each relay can switch
AC loads of up to 120 VAC, and DC loads of up to 24 VDC at
10 A. Remote operation of each relay is via the communications port.
Note: A relay configured for energy pulsing will not
respond to an assigned setpoint that
becomes active. Maximum pulse rate for
the relays is 1 pulse every 2 seconds (0.5
Hz).
6.4.5
The relays are also manipulated by setpoints on selected
measured parameters. Setpoint operation is described in
detail in Chapter 7, Using Setpoints.
Another use for the control relays is for kVARH and kWH
pulsed output. See section 6.4.4 for more information.
Section 4.2 in Chapter 4 shows wiring requirements for the
control relays.
6.4.1
Control Relay Modes
You can assign each of the three relays to setpoint operation
in latch or pulse mode, or to kVARH or kWH pulsing.
6.4.2
Access to Relay Parameters
The RELAY OPERATION parameter accesses the relay
parameters, and also allows you to select which relay to program. Selecting a value of 0 (zero) skips all relay parameters
when Parameter Select is pressed. Selecting 1, 2, or 3
accesses the programmable parameters for the selected
relay.
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Manual Forced Relay Operations
You can force operate or release relays by commands via the
communications port. Manual forced operate and forced
release commands override any present setpoint condition.
Forced operate commands made via communications affect
only a setpoint relay (Rx MODE = SETPOINT).
If the relay is in pulse mode (Rx VALUE > 0), a forced operate
command initiates a pulse of length equivalent to the value
set by the Rx VALUE parameter for that relay. This operation
is recorded in the event log and indicates that the relay was
pulsed. A forced release command has no effect.
If the relay is in latch mode (Rx VALUE = 0), it behaves normally for forced operate, forced release, and return to normal
(return to setpoint control) commands.
See section 6.4.7 for manual relay control special cases.
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6 Programming
6.4.6
Relay Event Logging
For a relay assigned to setpoint operation (Rx MODE = SETPOINT), the event log records relay operations in one of two
ways, depending on whether the relay is set to operate in
latch or pulse mode.
a.
b.
Pulse mode (Rx VALUE > 0): The event log shows that
the relay is pulsed when the setpoint becomes active.
When the setpoint returns to its inactive state, the setpoint event is logged but does not indicate the relay is
pulsed, since no pulse is generated.
Latch mode (Rx VALUE = 0): The event log records that
the relay is operated (ON) when the setpoint becomes
active, and is released (OFF) when the setpoint returns
to an inactive state.
If the relay is configured for kVARH or kWH pulse mode, no
relay operations are recorded in the event log.
6.4.7
Manual Relay Command Special Cases
If a manual forced operate command for a selected relay is
received while that relay is already in a forced operated state,
then the relay command is ignored and is not logged. This is
also true for a forced release command sent to a relay
already in a forced released state. In addition, manual relay
commands sent to relays in kVARH or kWH pulse mode are
not logged.
6.4.8
Relay Operation After Power Outages
When the power feed to the 4700 power meter is interrupted, even momentarily, the output relays are released.
When power is restored, the meter allows a three-second
settling time, then reevaluates setpoint conditions. If appropriate, the relays operate after the programmed time delays.
Any forced operated or forced released relay is released, followed by a resumption of normal setpoint operation.
6.5 Bi-Directional Energy
Energy measurements represent the KWH or KVARH sums
for all three phases. Energy parameters provide three measurement modes that indicate bi-directional power flow: forward, reverse, and total. KWH and KVARH can provide all
three modes.
6.6 Status Input Operation
The 4700 power meter provides four optional status inputs
(S1 to S4), which are used to sense the state of an external
contact. If the input voltage is below 9 VAC or VDC, the
input is sensed as inactive. If it is over 20 VAC or VDC, it is
sensed as active.
The status of these inputs is viewed using a Power Monitor
display and monitoring unit (or a computer running
WinPM,SIEServe, or other supervisory software) connected
to the communications port.
You can program the Status Input #4 (S4) to initiate kW
Demand Synchronization. See Chapter 8, Demand Calculation, for more information.
The 4700 power meter maintains a counter for the Status
Input #1 (S1). The counter accurately follows a maximum frequency of 0.3 Hz and can be reset to zero via the communications port. A minimum pulse width of 40 milliseconds is
required for reliable sensing of status input changes.
Note:
The maximum pulse count for the S1
counter is 65,535 before rollover occurs.
Section 4.1 in Chapter 4 shows several wiring diagrams
illustrating connections for the status inputs.
6.7 Fourth Current Input Operation
The 4700 power meter includes an optional fourth current
input, designated I4. The input uses connections I41 and I42
on the terminal strip. The AMPS SCALE parameter sets the
scaling for all four current inputs. Therefore, the CT primary
rating of the I4 current input must be the same as the CT primary ratings for the three-phase current inputs (5 A nominally).
Normally, this input is used to measure current in the neutral
conductor. In installations with nonlinear loads, odd harmonics can fail to cancel, producing significant currents in the
neutral conductor.
The I4 reading is viewed from the front panel by pressing the
Function button until displayed. It is also viewable remotely.
6.8 Waveform Capture
Total energy measurements represent the sum of the absolute values of imported and exported energy. Total energy
values are incremented by energy that is imported or
exported.
Imported real or reactive energy is displayed with an F suffix
(kWH-F, kVARH-F), indicating forward flow. Exported energy
values are displayed with an R suffix (kWH-R, kVARH-R),
indicating reverse flow.
Note:
30
Only kWH-F/kWH-R and kVARH-F/
kVARH-R measurements are displayed
from the front panel. kWH and kVARH
total values are read only via communications.
Digital waveform capture capabilities are used for detailed
power quality analysis.
Waveform capture allows the user to perform high-speed
sampling of the V1, V2, V3, VAUX, I1, I2, I3, or I4 (neutral current) inputs. One full cycle of the signal at a single input is
sampled at a rate of 128 samples per cycle. All samples are
taken in sync with the communications line frequency, and
within one input cycle.
Sampled waveform data is stored in on-board memory and
is read via the communications port. The high sampling rate
produces high-resolution data, which allows analysis of frequency components to the 63rd harmonic.
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6 Programming
You can upload captured waveform data to a master computer to display the waveforms and perform Fast Fourier
Transforms on them. This provides an indication of total harmonic distortion and a breakdown of individual frequency
components.
From the master computer, the operator requests the capture of individually selected 4700 power meter inputs. The
computer then uploads the waveform data. Waveform capture is automatically reinitiated when the 4700 power meter
on-board memory is read via the communications port.
6.9 Operating Parameter Descriptions
Table 6.1 and Table 6.2 provide a brief description of each
operating parameter for the 4700 power meter. More
detailed descriptions of each operating parameter are provided throughout this manual where operational features are
described.
Table 6.1 Programmable Operating Parameters
Parameter
Description
Range/Options
FIRMWARE VER
Displays the software level of the 4700 power meter. Not
V2.xxxB
programmable.
PASSWORD=
Must be entered to change the setup parameters or clear any
function. You can also change the password.
0 to 9999
SETPOINT NUM
Selects a setpoint to be programmed. If set to “00”, then no
setpoint is selected. If no setpoints are programmed, pressing the Parameter Select button will skip directly to RELAY
OPERATION.
00 to 17
Note: In the parameter names below, “xx” indicates the selected setpoint number.
SPxx TYPE
The type of parameter the selected setpoint is to monitor (for
example, OVER KW, PHASE REVERSAL, and so on).
See Table 7.1 in Chapter 7
SPxx HI LIMIT
SPxx LO LIMIT
SPxx TD OPERATE
SPxx TD
RELEASE
SPxx RELAY
NUMBER
Sets the high limit for the selected setpoint.
0 to 999,999
Sets the low limit for the selected setpoint.
0 to 999,999
Sets the time delay to operate for the selected setpoint.
0 to 32,000 sec.
Sets the time delay to release for the selected setpoint.
0 to 32,000 sec.
Selects which one of three control relays the selected setpoint controls. Selecting “0” will select no relay. After setting
this parameter, pressing the Parameter Select button will
return to SETPOINT NUM.
0 to 3
Selects one of the three control relays to be programmed.
Selecting 0 will exit control relay programming and skip
directly to VOLT SCALE.
0 to 3
RELAY OPERATION
Note: In the parameter names below, “x” indicates the selected control relay number.
Rx MODE
Rx VALUE
Defines the type of operation the selected relay is to perform.
SETPOINT, KWH PULSE, KVARH PULSE
For Rx MODE = SETPOINT: Specifies latch mode or sets
pulse duration.
0 = latch mode
1 to 65,535 = pulse duration
Rx HRS/PULSE
For Rx MODE = KWH or KVARH PULSE: Defines the number
of unit-hours between pulses.
0 to 65,535 unit-hours*
Sets full-scale AC input voltage. This parameter should
match the VT primary rating on systems using VTs with secondary ratings of 120 VAC, or the measured phase voltage
rating of the meter on systems connected directly. See section 6.2.1.
0 to 999,999 VAC
VOLT SCALE=
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Table 6.1 Programmable Operating Parameters
AMPS SCALE=
Sets full-scale AC input current. This parameter should match
the CT primary rating when the secondary rating is 5 A. See
section 6.2.2.
0 to 9,999 A
* For Rx MODE = KWHR PULSE or KVARH PULSE, pulse duration is 1 second.
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6 Programming
Table 6.2 Programmable Operating Parameters (continued)
Parameter
Description
Range/Options
VAUX SCALE=
I4 SCALE=
Sets full-scale auxiliary voltage input reading.
0 to 999,999 V
Sets full-scale I4 input current. This parameter should match
the AMPS SCALE parameter.
0 to 9,999 A
VOLTS MODE=
UNIT ID=
BAUD RATE=
COM MODE=
Sets volts mode.
4W-WYE, DELTA, SINGLE, DEMO
Sets the SEAbus communication address.
1 to 254
Sets the communications baud rate.
300, 1200, 2400, 4800, 9600, 19200 Baud
Displays the communications mode: RS-232 or RS-485.
RS232, RS485, none
Note: This parameter cannot be changed in programming mode. See section 3.1 in
Chapter 3 for more information.
DISPLAY TIMEOUT=
Sets the number of minutes before the display turns off after
the last button is pressed. The recommended setting is 180
minutes.
0 = display always on
1 to 999 minutes
CLEAR MAX/MIN?
Clears the stored maximum and minimum values. Displays
“YES” to indicate the values will be cleared when the Parameter Select button is pressed.
YES, NO
CLEAR KW/KVARHRS?
Clears the stored kWH and kVARH readings. Displays “YES”
to indicate the values will be cleared when the Parameter
Select button is pressed.
YES, NO
DEMAND PERIOD
Selects Demand Sync mode or the length of each demand
period used in calculating demand values. See Chapter 8,
Demand Calculation.
0 = Demand Sync Mode
1 to 99 minutes
NUM DMD PERIODS=
PHASE ROTATION
Sets the number of demand periods averaged to calculate
demand values.
1 to 15 periods
Specifies the normal phase sequence. This is used for PF
polarity detection in delta mode and for the phase reversal
detection setpoint. Chapter 7, Using Setpoints.
ABC, ACB
STNDRD FREQ=
I OUT KEY=
Specifies the frequency of the measured power system.
50, 60, or 400
Specifies the measured parameter for the current output.
VOLTAGE A, VOLTAGE B, VOLTAGE C,
CURRENT A, CURRENT B, CURRENT C,
KW A, KW B, KW C, KVA A, KVA B, KVA C,
KVAR A, KVAR B, KVAR C, VOLTAGE AV,
CURRENT AV, KW TOTAL, KVA TOTAL,
KVAR TOTAL, PF, KW DEMAND, AMP
DEMAND, FREQUENCY, VAUX, CURRENT
I4,
I OUT SCALE=
I OUT RANGE=
Sets the scale of the current output.
0 to 999,999
Indicates 0-20 mA or 4-20 mA proportional current output.
0 = 0 to 20 mA
1 = 4 to 20 mA
RTS ACTIVE LVL=
Sets the RTS active level, which is used for serial communications.
LOW, HIGH
FORMAT=
Sets phase labels and decimal display formats. The Cursor
button cycles between the phase label parameter and decimal display number parameter. The Increment and Decrement
buttons modify the values for the selected parameters.
Phase Labels ABC, XYZ, RBY, and RST
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Decimal Display 1,234.5 or 1234,5
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7 Using Setpoints
7 Using Setpoints
•
kVARH Pulse Output Relay (relay 2)
The 4700 power meter can monitor several measured
parameters simultaneously and then generate alarms and
controlling relays based on the parameter values. The meter
uses predefined setpoints to activate this functionality. A setpoint is a group of six programmed parameters that tells the
unit:
•
kWH Pulse Output Relay (relay 3)
1.
Which measured parameter to monitor (setpoint type),
and activation setting of over or under the value
2.
The high limit
3.
The low limit
4.
The time delay for relay operation
5.
The time delay for relay release
6.
Which relay to activate, if any, when appropriate limits
are exceeded and time delay conditions are met
Note: The response time of the relays is one to
two seconds and could be up to five seconds after any meter power-up (for example, initial power or subsequent power-ups
following any system power failures). The
4700 power meter should not be used for
protective functions that require faster
operation. A battery-backed DC power
supply should be considered for 4700
power meter devices whose setpoints are
being used to perform protective functions
in which response time is important.
You can assign any of the three relays to a single setpoint, or
to several setpoints. A relay is activated if any of the setpoints controlling it become active.
In addition, you can use relays 1, 2 and 3 for kVARH and
kWH pulsing.
7.1 Applications
The 4700 power meter supports 17 different setpoints simultaneously, numbered 1 to 17. All of the setpoints are programmable from the front panel. Table 7.1 outlines the
measured parameters that the setpoints can monitor. You
can use the setpoints to operate the following types of control relays:
•
Trip Relay—to shunt trip a breaker
•
Alarm Relay—to activate an alarm buzzer or light
•
Control Relay—to control an external piece of equipment
•
Remote Control Relay—to control an external piece of
equipment via the communications port
7.2 Over Setpoint
An over setpoint activates when the parameter monitored
exceeds the high limit for a time period longer than the delay
parameter. When a setpoint becomes active, it operates the
assigned relay, if any. The setpoint status change is stored in
the event log, and includes the time and parameter value.
An over setpoint deactivates when the parameter monitored
falls below the low limit for a time period longer than the
delay parameter (refer to Figure 7.1). The setpoint status
change is also logged, and includes the time of return-withinlimit and the out-of-limit value.
Parameter Value
High Limit
Low Limit
Setpoint Alarm Active
Time
Time less
than time
delay to
operate
Time
delay to
operate
Time less
than time
delay to
release
Setpoint alarm activated
Time
delay to
release
Setpoint alarm released
Figure 7.1 Over Setpoint Operation
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7 Using Setpoints
7.3 Under Setpoint
Under setpoints function similarly to over setpoints, except
they operate for opposite reasons. An under setpoint activates when the parameter monitored falls below the low limit
for a time period longer than the delay parameter (refer to
Figure 7.2).
An under setpoint deactivates when the parameter monitored exceeds the high limit for a time period longer than the
delay parameter.
It is recommended that you use a Setpoint Parameter Form
to plan your setpoints, before entering programming mode.
Figure 7.3 is an example Setpoint Parameter Form, containing information about the six parameters as they correspond
to each setpoint. Complete a similar form, like the one available in Appendix C, and keep a copy with the meter.
The example Setpoint Parameter Form displays the following
attributes:
•
Relay 1 is used as an trip relay, with over voltage, under
voltage, voltage unbalance, and phase reversal trips
enabled. The relay is connected to the breaker shunt
trip input.
•
Relay 2 is used as an alarm relay to warn of loads over
70% of the breaker rating. Its output is connected to a
buzzer.
•
After entering your password in programming mode, no
setpoint-controlled relay operations occur until you exit
programming mode. The 4700 power meter then
assesses the status of each setpoint and performs any
required operations.
•
Relay 3 is used as a kW demand control relay.
7.4 Programming Setpoints
To program setpoints, switch to programming mode and
enter your password. Press the Parameter Select button
until the SETPOINT NUM parameter appears. Then enter the
setpoint number, from 01 to 17, of the parameter you want
to program. Program the setpoint by entering new values for
all parameters associated with the selected setpoint.
Note: While you are programming the 4700 power
meter via the front panel or communications, no setpoint-controlled relay operations occur until you complete the
programming sequence. The 4700 power
meter then assesses the status of each setpoint and performs any required operations.
Parameter Value
High Limit
Low Limit
Setpoint Alarm Active
Time
Time less
than time
delay to
operate
Time
delay to
operate
Time less
than time
delay to
release
Setpoint alarm activated
Time
delay to
release
Setpoint alarm released
Figure 7.2 Under Setpoint Operation
36
Siemens Energy & Automation, Inc.
7 Using Setpoints
Table 7.1 Setpoint Types
Type
Description
NOT USED
OVER VOLT
UNDER VOLT
VOLTAGE
UNBAL
OVER CURRENT
CURRENT
UNBAL
OVER KVA
OVER KW
OVER KWREV
OVER KVAR
FWD
OVER KVAR
REV
OVER KWD
OVER AMPD
OVER FREQUENCY
UNDER FREQUENCY
OVER VAUX
UNDER VAUX
PHASE REVERSAL
UNDER PF LAG
UNDER PF
LEAD
OVER I4
A setpoint not currently in use.
Over voltage (highest phase voltage).
Under voltage (lowest phase voltage).
Percentage difference of most deviant phase voltage from the average.
Over current (highest phase current).
Percentage difference of most deviant phase current from the average.
Over kVA.
Over kW.
Over negative kW (feeding power into utility grid).
Over kVAR foward (imported) reactive power.
Over kVAR reverse (exported) reactive power.
Over kW demand.
Over Amp demand.
Over frequency. (Enter: Frequency x 10 [that is, 60Hz = 600])
Under frequency. (Enter: Frequency x 10 [that is, 60Hz = 600])
Over auxiliary voltage.
Under auxiliary voltage.
Phase reversal. Operates if the phase rotation does not match the programmed normal operation.
Under power factor lagging.
Under power factor leading.
Over I4 current.
Siemens Energy & Automation, Inc.
37
7 Using Setpoints
Setpoint Parameter Form
Setpoint
Type
High Limit
TD Operate
Low Limit
TD Release
Relay/Function
1
Over Volts
332
5
290
1
1 Trip
2
Under Volts
270
5
220
1
1 Trip
3
Volts Unbal.
30%
5
10%
1
1 Trip
4
Phase Reversal
-
1
-
1
1 Trip
5
Not Used
6
Not Used
7
Over Amps
2100
10
2000
1
2 Alarm
8
Over Volts
300
10
290
1
2 Alarm
9
Under PF Lag
90
10
85
10
2 Alarm
10
Under PF Lead
90
10
85
10
2 Alarm
11
Over KWD
1200
10
900
10
3 Demand Control
12
13
14
15
16
17
Figure 7.3 Example Setpoint Parameter Form
38
Siemens Energy & Automation, Inc.
8 Demand Calculation
8 Demand Calculation
8.3 Demand Synchronization
Power utilities generally bill commercial customers based on
both their energy consumption (in kWhr) and their peak
usage levels, called peak demand (in kW). Demand is a
measure of average power consumption over a fixed time
period, typically 30 minutes. Peak demand is the highest
demand level recorded over a specific billing period.
The 4700 power meter includes the option of starting
demand intervals that correspond to an active pulse. Set the
DEMAND PERIOD parameter to zero, which initiates the
Demand Sync mode. Instead of internally timing the duration
of each demand period used in the kW demand calculation,
the meter looks for an ACTIVE pulse on Status Input #4 (S4).
You can still specify the number of demand periods in this
mode, as previously explained.
8.1 Demand Measurement Methods
Demand measurement methods, and their intervals, vary
according to individual utilities. Some common methods
include: thermal averaging, the fixed interval technique, and
the sliding window technique.
In thermal averaging, the demand indicator responds to
heating of a thermal element in the watt hour meter. The
demand period is determined by the thermal time constant
of the element, typically 15 to 30 minutes.
The fixed interval technique measures average usage electronically over each period. The highest recorded value is the
peak demand.
Note:
With the fixed interval method, the 4700
power meter maximum reading and the
utility reading are not necessarily the same,
unless the demand periods are time-synchronized. The best way to resolve this
problem is to use the sliding window
method with the same total demand period
as the utility, as shown above. The 4700
power meter maximum demand reading is
then always equal to or slightly higher than
the utility readings.
The sliding window technique, or “rolling interval” method,
divides the demand interval into subperiods and the demand
is measured electronically, based on the average load level
over the most recent set of subperiods. This has the effect
of improving the response times, in comparison with the
fixed interval method. For example, with a 6x5 minute (30
minute total) sliding window, demand is the average power
consumption over the last six five-minute periods.
8.2 Internally Timed Demand Measurement
The 4700 power meter uses the sliding window method to
measure demand. You can program both the DEMAND
PERIOD (1 to 99 minutes) and NUM DMD PERIODS (1 to 15)
for averaging. This allows you to match virtually any utility
demand measurement method. Refer to Table 8.1 for more
information.
Table 8.1 Demand Calculation Chart
Utility Method
4700 Programming
Demand Period
(in minutes)
Number of
Demand Periods
(must be 15 or
less)
Fixed Interval
Utility Period
1
Fixed Interval
Emulation
Utility Period/15
15
Thermal
Utility Period/15
15
Sliding Window
Utility Subperiod
Utility number of
subperiods
Siemens Energy & Automation, Inc.
39
8 Demand Calculation
Notes:
40
Siemens Energy & Automation, Inc.
9 Communications
9 Communications
9.1 General
The 4700 power meter is optionally equipped with a communications card that allows the 4700 power meter to be integrated with large energy monitoring networks. The
communications port is optically isolated and transient protected. It is field-configurable for RS-232 or RS-485 standards and can operate at data rates up to 19,200 baud.
The 4700 power meter is fully compatible with Siemens
WinPM software. WinPM software can display all measured
parameters and status information, waveform data, and data
logs provided by the 4700 power meter. WinPM software
can also be used to remotely program the setup parameters
for all basic and advanced features.
The open communications protocol of the 4700 power meter
allows access to all data and setup parameters by third-party
systems.
This chapter provides additional information regarding
remote communications connections, programming, and
general operation.
9.2 RS-232 Communications
RS-232 is commonly used for short distance, point-to-point
communications. Connection between a host computer (or
PLC) and a single remote device must be less than 50 feet.
Figure 3.3 and Figure 3.4 in Chapter 3 provide wiring diagrams for direct RS-232 connection and the required wiring
for the RS-232 interconnect cable(s).
Connection using modems via dedicated or dial-up telephone lines is also possible (see Figure 9.1).
When using a modem, it is important that the computer-tomodem and modem-to-4700 power meter cable connections illustrated in Figure 3.4 in Chapter 3 are used.
The RS-232 port RTS line is operational and can be used if
required by any hardware device connected to the 4700
power meter. Siemens WinPM software does not require the
use of the RTS line for direct RS-232 connections; however,
some types of modems (for example, radio modems) may
require its operation.
The RTS signal is asserted before the beginning of a transmission and remains asserted throughout the transmission.
The time delay between the assertion of the RTS and the
start of the transmission is controlled by the TRANSMIT
DELAY parameter, which can be set from the front panel. The
range is 0 to 999 milliseconds (with 0 (zero) as default).
Siemens Energy & Automation, Inc.
The programmable RTS ACTIVE LVL parameter selects
whether the RTS line is asserted HIGH or LOW during transmission.
9.3 RS-485 Communications
RS-485 is used when multiple devices are installed at a
remote site. RS-485 communications can be used to concurrently connect up to 32 remote devices on a single communications loop. Each device is given a unique unit ID
(identification number). In this way, each remote device may
be monitored and controlled from one location by a single
supervisory device.
The total distance limitation on a single RS-485 communications network is 4000 feet (1220 meters) using 22 AWG
twisted pair shielded cable. Figure 3.5 in Chapter 3 provides a wiring diagram for RS-485 network connection.
Communication methods between the remote RS-485 site
and the supervisory device can include a direct RS-485 connection, telephone lines with modems, fiber-optic and/or
radio links. An RS-232 to RS-485 converter, such as the Isolated Multi-Drop converter, is required between the RS-232
port of the computer or modem and the RS-485 network as
illustrated in Figure 3.5 in Chapter 3.
9.4 Setting the Unit ID and Baud Rate
Before communication with the host computer/PLC is possible, ensure that the 4700 power meter, and all other connected devices, are configured for the required
communications standard (RS-232 or RS-485). Instructions
for the 4700 power meter communications card configuration are provided in Figure 3.1 in Chapter 3.
The next step is to program the communication parameters
of the 4700 power meter and all other connected devices.
The UNIT ID and BAUD RATE parameters of the 4700 power
meter can be programmed via the front panel. The unit ID
must be set to a unique value between 1 and 254. The baud
rate of each device on the network must be set to correspond with the baud rate selected for the computer. Options
include 300, 1200, 2400, 4800, 9600 or 19,200 baud.
When using a modem interface between the host computer
and any remote device(s), ensure that the host computer is
not used to set the BAUD RATE parameter of any selected
device outside the working range of the modem. Doing so
will cause that meter to cease communicating. Re-establishing communications with that meter is then only possible
through the following steps:
1.
Reset the baud rate of the remote device from its front
panel to a value within the working range of the modem.
2.
Set the computer to communicate at the baud rate at
which the remote device has been set to communicate.
41
9 Communications
9.5 Siemens WinPM Software
9.6 Third-Party System Compatibility
WinPM Electrical Distribution Communication software operates in the Microsoft® Windows™ 3.1 operating environment on a personal computer (PC). Through
communications drivers, WinPM software collects and displays real-time data from Siemens ACCESS field devices,
Siemens protective relays, and other field devices. WinPM
software displays information and adds the capabilities of
programming, monitoring alarms, and logging system
events. WinPM software also monitors and displays historical
data, minimum and maximum data, and waveform data. In
addition, WinPM software can deliver its data to other compatible Windows applications, in real-time, through dynamic
data exchange (DDE), a method of sharing information that is
supported by Windows applications.
4700 power meter communications uses an advanced
object and register based open protocol which supports an
efficient exception reporting methodology. This allows the
4700 power meter to be easily adapted to third-party PLC,
DCS, EMS, and SCADA systems.
All data and configuration registers are accessible via communications. All configuration and control operations have
embedded password protection.
Contact Siemens for complete documentation on the 4700
power meter SEAbus communications protocol or to discuss
a specific application.
Your computer running WinPM software can be connected
to intelligent field devices directly, or through a modem to the
ACCESS system’s SEAbus communications bus.
RS-485 4000 feet maximum, up to 32 devices
Personal Computer
Isolated
Multi-Drop
Converter
Modem
Isolated
Multi-Drop
Converter
Fiber Optic Link,
Phone Line
or Dedicated Cable
Modem
Personal Computer
RS-485 4000 feet maximum, up to 32 devices
Radio Link
Isolated
Multi-Drop
Converter
Personal Computer
Radio
Modem
Radio Modem
RS-485 4000 feet maximum, up to 32 devices
Figure 9.1 Remote Communications Methods
42
Siemens Energy & Automation, Inc.
10 Maintenance
10 Maintenance
The following two circumstances describe the only regular
maintenance that the 4700 power meter may require.
10.1 Battery Replacement
The 4700 power meter nonvolatile memory (NVRAM) circuit
contains an integrated battery backup system.
The rated life of the NVRAM battery is seventy years at
122°F (50°C), 28 years at 140°F (60°C), and 11 years at
158°F (70°C). If the unit operates at less than 122°F (50°C)
for 60% of the time, less than 140°F (60°C) for 90% of the
time, and less than 158°F (70°C) for 100% of the time, the
expected life of the NVRAM battery is 35 years. If the meter
is operating in an environment where the temperatures regularly exceed 140°F (60°C), the NVRAM battery should be
replaced every ten years.
Note: When the NVRAM is replaced, historic data
may be lost. We recommend backing up
critical logged data to the hard drive of a
computer prior to servicing. Setup parameters and calibration of the unit are not
affected.
10.3 Field Service Considerations
In the unlikely event that the 4700 power meter unit should
fail, servicing requires disconnection and removal of the unit
from its mounting for the purpose of repair, or for exchange
with a replacement unit. The initial installation should be done
in a way which makes this as convenient as possible:
1.
All power to the 4700 power meter should be removed
and connections grounded.
2.
Current transformer secondary leads should be shortcircuited at the CT shorting block. Check to be sure that
protective relaying is not affected.
3.
All wiring should be routed to allow easy removal of the
connections to the 4700 power meter terminal strips,
the 4700 power meter rear cover, and the 4700 power
meter itself.
10.2 Calibration
The calibration interval for the 4700 power meter depends
on your accuracy requirements. The rated accuracy drift is
0.1% per year.
For information regarding the required calibration procedure,
contact your local Siemens sales representative.
Siemens Energy & Automation, Inc.
43
11 Troubleshooting
11 Troubleshooting
4.
If RS-232 or RS-485 communication does not work:
A number of problems can cause the 4700 power meter not
to function properly. This section lists possible problems and
explains how to correct them.
a. check that the BAUD RATE matches all other
ACCESS devices on the network or the personal
computer.
1.
b. check that the communications mode (RS-232 or
RS-485) set by the jumper on the communications
card is correct for the type of standard being used
(see Chapter 3, section 3.1).
If the display does not operate:
a. check that there is an appropriate voltage available
to the power supply (L and N connections on the
terminal strip).
b. confirm that the VREF terminal is connected directly
to ground.
c. press a button on the front panel.
2.
If the voltage or current readings are incorrect:
c. check that the UNIT ID (address) of the 4700 power
meter matches the configuration of the Power Monitor unit or other computer.
If your problem persists after performing the specified steps,
or if the problem is not listed above, contact Siemens.
a. Check that the VOLTS MODE is properly set for the
given wiring.
b. Check that the voltage and current scales are properly set.
c. Make sure the VREF terminal is properly grounded.
d. Check the quality of the CTs and VTs in use.
e. Make the following voltage tests:
•
•
•
•
•
3.
V1, V2, V3 to VREF are 120 VAC (or rated full
scale values of 277 or 347 VAC).
VREF to switchgear earth ground is 0 V.
L to VREF is 120 VAC or DC (or optional rated
control power voltage).
N to VREF is less than 2 VAC.
All current inputs are less than 1 VAC with
respect to VREF.
If the kW or Power Factor readings are incorrect but
voltage and current readings are correct:
make sure that the phase relationship between voltage
and current inputs is correct by comparing the wiring
with the appropriate wiring diagram.
44
Siemens Energy & Automation, Inc.
Appendix A: Technical Specifications
A Technical Specifications
Input and Output Ratings
Voltage Inputs:
(V1, V2, V3)
120 VAC, 277 VAC, and 347 VAC nominal full scale input versions
Overload withstand: 1500 VAC continuous, 2500 VAC for 1 second
Input impedance: 2 M
Aux. Voltage Input:
(VAUX)
1.0 VAC/VDC nominal full scale input (1.25 VAC/VDC max.)
Overload withstand: 120 V continuous, 1000 V for 1 second
Input impedance: 10 K
Current Inputs:
(I11, I12, I21, I22
I31, I32, I41, I42)
5.000 A, AC nominal full scale input
Overload withstand: 15 A continuous, 300 A for 1 second
Input impedance: 0.02 , Burden: 0.05 VA
Status Inputs:
(S1, S2, S3, S4)
>20 VAC/VDC = active, <9 VAC/VDC = inactive
(S1, S2, S3, S4) input impedance: 2 M
Overload withstand: 1500 V continuous, 2500 V for 1 second
Control Relays:
(R1, R2, R3)
Form C dry contact relays
Aux Current Output (IOUT):
0-20 mA. Maximum load 250
Power Supply:
Standard N. American: 85 to 132 VAC/0.2 A/47 to 440 Hz or 110 to 170 VDC/0.2 A
277 VAC or 24 VDC @ 10 A maximum load current
resistive
European/Optional: 85 to 264 VAC/0.2 A/47 to 440 Hz or 110 to 340 VDC/0.2 A
Other Available Options: 24 VDC and 48 VDC
Operating Temperature:
0ºC to 50ºC (32ºF to 122ºF) ambient air temperature range
Storage Temperature:
-30ºC to +70ºC (-22ºF to +158ºF)
Humidity:
5 to 95%, non-condensing
Shipping:
Weight: 3.9 kg. (8 lbs, 10 oz.) Carton: 38 x 25 x 18 cm (15” x 9.8” x 7.1”)
Voltage, Current,Status, Relay, and Power inputs all pass the ANSI C37.90A surge withstand and fast transient test.
Siemens Energy & Automation, Inc.
45
Appendix A: Technical Specifications
Technical Specifications
Parameter
Accuracy (%)
Resolution (%)
Range
Volts
0.2
0.1
0 to 999,999 (1)
Amps (L & N)
0.2
0.1
0 to 9,999
KVA
0.4
0.1
0 to 999,999 (2)
KW
0.4
0.1
0 to 999,999 (2)
KVAR
0.4
0.1
0 to 999,999 (2)
PF
1
1
1.0 to +/-0.6
FREQUENCY
0.2 Hz
0.1 Hz
40 to 70 Hz
KW DEMAND
0.4
0.1
0 to 999,999
AMPS DEMAND
0.2
0.1
0 to 9,999
KWHR
0.4
1 KWHR
0 to 999,999,999
KVARHR
0.4
1 KVARHR
0 to 999,999,999
Vaux (1 VAC scale)
0.25
0.1
0 to 999,999
Neutral Current
0.2
0.1
0 to 9,999
(1) Reads in kV for voltages over 9,999
(2) Reads in MVA, MW, MVAR for readings over 9,999
Siemens Energy & Automation, Inc.
46
Appendix B: Dimensions
B Dimensions
Panel Front
Panel Right Side
7.70"
(196 mm)
12.60"
(320 mm)
Siemens Energy & Automation, Inc.
4.60"
0.35"
(117 mm)
(9 mm) Behind Panel Depth
47
Appendix C: Setpoint Parameter Form
C Setpoint Parameter Form
Setpoint
Type
High Limit
TD Operate
Low Limit
TD Release
Relay/Function
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
Siemens Energy & Automation, Inc.
48
Appendix D: Firmware Versions
D Firmware Versions
The following table lists each software version release for the
4700 power meter and the new features or performance
enhancements added with each release.
The version number is identified on the label on the rear
cover of the 4700 power meter (see Figure 1.1 in Chapter
1). If yours is currently using a software version older than
the most recent version listed in the table below, you can
upgrade the software in that unit by contacting your local
representative or the manufacturer. Upgrades to the 4700
power meter require a simple replacement of the EPROM
(integrated circuit “chip”), which contains the operating software inside the unit. This replacement procedure must be
done by trained electronics service personnel.
Hardware Revision B
From now on, all EPROMs are available for either the A or B
hardware. They are not interchangeable. Normally, only the B
is released except for an upgrade of an older meter. Revision
B meters are easily distinguished from revision A meters by
the following:
•
Raised black plastic bezel (Rev. A has a flat, white metal
bezel)
•
Product Rev: B printed on back of meter
•
VREP terminal (Rev. A does not have a VREF terminal)
Software
version
Release Date
Description
2.2.0.2B
January 1, 1992
Exactly the same as Rev. A
2.2.0.2
2.2.0.3B
March 31, 1992
Fixed bug that limited unit ID
(address) to 1 thru 99
2.2.0.4B
January, 1993
• Fixed bug with kWH/kVARH
overflow causing display to blink
• Fixed but that lost password
changes if powered down
• Adds waveform capture feature
• Adds reverse kVARH value;
kVARH and kWH changed to
return forward, not total values
• Adds configurable relay pulsing
• Add kW FWD, kVAR FWD, and
kVAR REV setpoints
• PF display changed to LD/LG
• 3-wire WYE mode allows for
2VT/3CT
• Demand period is now based on
time of day
• Added ,/. configuration of display values (European format)
• RTS line is asserted 10 msec
before TX in RS-232 mode
• PM 3.13 logs diagnostic code 1
type 1 errors with this version
Siemens Energy & Automation, Inc.
49
Appendix E: Ordering Information
E Ordering Information
4700B-DR
–
HN
Basic Display Unit
Communications,
event log, snapshot log,
waveform capture
Power Supply
120 VAC/125 VDC
240 VAC/250 VDC
24/48 VDC
MC3
1
2
3
Input Voltage
120 VAC
277 VAC
347 VAC
1
2
3
Extended Temperature Range
(Standard Model, no suffix)
-22°F to +158°F (-30°C to + 70°C)
T
Examples:
“4700B-DRMC3-11HN” specifies a power meter with an isolated RS-232/RS-485 communications module installed, a
120VAC/125VDC power supply, and 120VAC nominal measured phase voltage inputs.
“4700B-DR-12HNT” specifies a power meter with 120VAC/
125VDC power supply, 277VAC nominal measured phase
voltage inputs, and extended temperature capability.
4700 Power Meter Product Designations
Features
Product Designations
DR
DRMC3
15 metered parameters
X
X
Min/Max log
X
X
Aux voltage (1VAC/1VDC
nominal)
X
X
20 character display
X
X
Four discrete inputs
X
X
Three programmable
relay outputs
X
X
One analog ouput (4 to
20mA)
X
X
Communications module
installed
X
Event Log
X
Snapshot Log
X
Waveform Capture
X
50
Siemens Energy & Automation, Inc.
Index
A
D
AMPS SCALE parameter, 24, 28, 29
auxiliary current output (IOut), 20
operation, 24
auxiliary voltage input (VAux), 20
operation, 24
Decrement button, 23
Decrement,
function, 23
DEMAND PERIOD parameter, 30, 35
demand, 35
device specifications, 41–42
DISPLAY TIMEOUT parameter, 30
display,
changing numbers format, 27
changing phase labels format, 27
FORMAT parameter, 30
labels used, 22
modes available, 21
reading the display, 21
troubleshooting problems, 40
B
battery, 39
replacing, 39
BAUD RATE parameter, 36
baud rate, 36
C
calibration (of device), 39
chassis ground, 3
CLEAR KW/KVARHRS? parameter, 30
CLEAR MAX/MIN? parameter, 30
COM MODE parameter, 30
communications card, 13
communications, 36–37
baud rate, 30
device address, 30
parameters for, 30
RS-232 to RS-485 converter, 36
RTS ACTIVE LVL, 30
troubleshooting problems, 40
wiring, 13
connection,
auxiliary current output, 20
auxiliary voltage input, 20
chassis ground, 3
control relays, 18
power supply, 3
power wiring, 3
RS-232 14
RS-485, 15
status inputs, 17
VOLTS MODE parameter, 24
VREF terminal, 3
control relays,
connections for, 18
operation of, 27–28
pulse operation, 27
current transformers,
and AMPS SCALE, 24
requirements for, 5
Cursor button, 23
Cursor,
function, 23
Siemens Energy & Automation, Inc.
E
event log,
control relay log entries, 28
F-H
FORMAT parameter, 27, 30
fourth current input. See I4.
Function button, 21, 22, 23
I-L
I OUT KEY parameter, 24, 30
I OUT RANGE parameter, 30
I OUT SCALE parameter, 30
I4 (fourth current input), 5, 28
I4 SCALE parameter, 30
Increment button, 23
Increment,
function, 23
installation, 3–11
field service considerations, 39
IOUT POWER FACTOR parameter, 24
IOUT RANGE parameter, 24
IOUT SCALE parameter, 24
IOut. See auxiliary current output.
M
maintenance, 39
Maximum button, 22
min/max logs,
clearing, 30
I- i
Index
Minimum button, 22, 23
modem connection, 36
modem,
connections, 36
mounting the device, 3
dimensions for (illustration), 4
N
NUM DMD PERIODS parameter, 35
O
over setpoint, 31
P-Q
Parameter Select button, 23
Parameter Select,
function, 23
PASSWORD parameter, 23, 29
peak demand, 35
Phase button, 21
power supply, 3
programming,
entering programming mode, 23
minimum requirements, 24
using the front panel, 25–26
using WinPM software, 37
with WinPM, 37
protocol, 37
R
RELAY OPERATION parameter, 27, 29
RS-232,
cable wiring for (illustration), 15
communications, 36
See also communications.
connections for (illustration), 14
connections for, 14
selecting this communications mode, 13
RS-232. See also communications.
RS-485,
communications, 36
See also communications.
connections for (illustration), 15
connections for, 15
selecting this communications mode, 13
RS-485. See also communications.
RTS ACTIVE LVL parameter, 30, 36
I-ii
S
SEAbus, 37
SETPOINT NUM parameter, 24, 29, 32
setpoints, 31–33
parameter form, 44
setpoint relay operation, 27
skipping setpoint parameters, 24
status inputs, 28
connections for, 17
STNDRD FREQ parameter, 30
T
troubleshooting, 40
U
under setpoint, 32
UNIT ID parameter, 30, 36
UNIT ID, 36
V
VAUX SCALE parameter, 30
VAUX. See auxiliary voltage input. 24
VOLT SCALE parameter, 24, 29
voltage transformers,
and VOLT SCALE, 24
requirements for, 5
VOLTS MODE parameter, 24, 30
VREF terminal, 3
W-Z
waveform data,
connections for waveform capture, 5
WinPM software, 37
wiring,
communications wiring, 13–16
control relays, 18
power wiring, 3
status inputs, 17
wiring. See also installation.
Siemens Energy & Automation, Inc.
Warranty
Siemens Energy & Automation, Inc. warrants that all equipment purchased hereunder is warranted on a "RETURN TO
FACTORY" basis against all defects in workmanship and materials under normal and proper use and service in its unmodified condition for a period of one (1) year from the date of initial shipment. Siemens Energy & Automation, Inc.'s sole obligation under this warranty shall be limited to furnishing parts and labor to remedy such defects; either, at the option of
Siemens Energy & Automation, Inc., by replacing or repairing any defective parts which are returned to Siemens Energy &
Automation, Inc. factory or by making available at a Purchaser designated facility a repaired or replaced part. All replaced
equipment shall become the property of Siemens Energy & Automation, Inc. The cost of freight to and from Siemens
Energy & Automation, Inc. Siemens Energy & Automation, Inc. will be borne by the Purchaser. If Siemens Energy & Automation, Inc. determines that the equipment returned to it for warranty correction is not defective, as herein defined, Purchaser shall pay Siemens Energy & Automation, Inc., all costs of service, parts, handling and transportation.
Product Return Procedure
Contact Siemens Energy & Automation Customer Service at 800-427-2256 for information on the product return procedure.
Siemens Energy & Automation, Inc.
Siemens Energy & Automation, Inc.
Power Distribution Solutions
3333 Old Milton Parkway
Alpharetta, GA 30005
© Siemens Energy & Automation, Inc.
Siemens is a registered trademark of Siemens AG.
Specifications are subject to change without notice.
For Nearest Sales Office
1.800.964.4114
www.sea.siemens.com
sales/salesoffices.html
Windows is a trademark and Microsoft is a registered
trademark of Microsoft Corporation.
For More Information Visit
www.sea.siemens.com/access
Order No. XXOM-00102-1199
PDF 1199 Printed in the U.S.A.
Siemens Energy & Automation, Inc.
Power Distribution Solutions
3333 Old Milton Parkway
Alpharetta, GA 30005
© Siemens Energy & Automation, Inc.
Siemens is a registered trademark of Siemens AG.
Specifications are subject to change without notice.
For Nearest Sales Office
1.800.964.4114
www.sea.siemens.com
sales/salesoffices.html
Windows is a trademark and Microsoft is a registered
trademark of Microsoft Corporation.
For More Information Visit
www.sea.siemens.com/access
Order No. XXOM-00102-1199
PDF 1199 Printed in the U.S.A.
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