Merlin Gerin PowerLogic 2000 Series Owner's manual

3020IB9814
December 1998

Installation and Operation
Circuit Monitor
Series 2000

NOTICE
Read these instructions carefully and look at the equipment to become familiar with the device before trying
to install, operate, or maintain it. The following special messages may appear throughout this bulletin to warn
of potential hazards or to call attention to information that clarifies or simplifies a procedure.
DANGER
!
Used where there is hazard of serious injury or death. Failure to
follow a “DANGER” instruction will result in death or serious injury.
WARNING
!
Used where there is hazard of serious injury or death. Failure to
follow a “WARNING” instruction can result in death or serious injury.
CAUTION
!
Used where there is hazard of equipment damage. Failure to follow a
“CAUTION” instruction can result in damage to equipment.
Note: Provides additional information to clarify or simplify a procedure.
PLEASE NOTE: Electrical equipment should be serviced only by qualified electrical maintenance personnel,
and this document should not be viewed as sufficient for those who are not otherwise
qualified to operate, service, or maintain the equipment discussed. Although reasonable care
has been taken to provide accurate and authoritative information in this document, no
responsibility is assumed by Square D for any consequences arising out of the use of this
material.
FCC NOTICE: 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 unacceptable
interference to radio and TV reception, requiring the operator to take whatever steps are
necessary to correct the interference.
TECHNICAL SUPPORT
For technical support, please contact your Schneider Electric representative, who will
contact the Power Management Operation Technical Support Center. The Technical Support
Center will respond to your questions by telephone, fax, or mail.
POWERLOGIC, SY/MAX, SY/NET, SY/LINK, POWER-ZONE, VISI-VAC, ISO-FLEX and are Registered Trademarks of Square D Company.
SYSTEM MANAGER and CIRCUIT TRACKER are Trademarks of Square D Company.
Windows, Windows NT, and Windows 95 are Registered Trademarks of Microsoft Corporation.
Other names are trademarks or service marks of their respective companies.
1998 Square D Company All Rights Reserved

Contents
i
CONTENTS
CHAPTER 1—INTRODUCTION......................................................................................................................1
What is the Circuit Monitor? ................................................................................................................................. 1
Expanded Memory .................................................................................................................................................. 3
Requirements for Using.................................................................................................................................. 4
Identifying the Series and Firmware Revisions .......................................................................................... 4
Model Numbers ............................................................................................................................................... 4
Upgrading Existing Circuit Monitors........................................................................................................... 5
Memory Options Summary ........................................................................................................................... 5
Safety Precautions ................................................................................................................................................... 6
Using This Bulletin .................................................................................................................................................. 6
Notational Conventions.................................................................................................................................. 6
Topics Not Covered Here............................................................................................................................... 7
Related Documents ................................................................................................................................................. 7
Reference Manual ............................................................................................................................................ 8
CHAPTER 2—HARDWARE DESCRIPTION ..................................................................................................9
Front Panel................................................................................................................................................................ 9
Rear Connections ................................................................................................................................................... 11
CHAPTER 3—INSTALLATION .....................................................................................................................13
CE Compliance ...................................................................................................................................................... 14
Mounting the Circuit Monitor ............................................................................................................................. 15
Wiring CTs, PTs, and Control Power ................................................................................................................. 17
Wiring Multiple Circuit Monitors to a Single Set of PTs/CPT ............................................................... 25
Deriving Control Power from Phase PT Inputs ........................................................................................ 26
Grounding the Circuit Monitor .......................................................................................................................... 27
Communications Wiring ...................................................................................................................................... 28
Connecting to a System Display.................................................................................................................. 29
Connecting to a Personal Computer........................................................................................................... 30
Connecting to a POWERLOGIC Ethernet Gateway................................................................................. 31
Connecting to a POWERLOGIC Network Interface Module ................................................................. 32
Connecting to a SY/MAX Programmable Controller .............................................................................. 33
Length of the Communications Link .......................................................................................................... 34
Daisy-Chaining POWERLOGIC Devices ................................................................................................... 35
Terminating the Communications Link ..................................................................................................... 36
Biasing the Communications Link .............................................................................................................. 37
CHAPTER 4—FRONT PANEL OPERATION ...............................................................................................39
The Setup Mode ..................................................................................................................................................... 40
The Configuration Option............................................................................................................................ 40
The Resets Option.......................................................................................................................................... 40
The Alarm/Relay Option ............................................................................................................................. 40
The Diagnostics Option ................................................................................................................................ 40
Choosing a Setup Option ............................................................................................................................. 41
How the Buttons Work ................................................................................................................................. 41

Bulletin No. 3020IB9814
December 1998
ii
Configuring the Circuit Monitor ......................................................................................................................... 42
Factory Defaults ............................................................................................................................................. 42
General Configuration Procedure ............................................................................................................... 42
Viewing Configuration Data in Protected Mode ...................................................................................... 45
Setting the Master Password........................................................................................................................ 46
Configuring the Circuit Monitor (cont.)
Setting the CT Ratios ..................................................................................................................................... 47
Setting the PT Ratio ....................................................................................................................................... 48
Setting the System Type ............................................................................................................................... 48
Setting the Demand Interval ........................................................................................................................ 49
Setting the Watthour/Pulse Output ........................................................................................................... 51
Setting the Device Address .......................................................................................................................... 52
Setting the Baud Rate .................................................................................................................................... 53
Setting the Nominal Frequency ................................................................................................................... 54
Resetting Demand, Energy, and Min/Max Values .................................................................................. 55
Performing Resets Using the Resets Option ...................................................................................................... 56
Setting Up Alarm/Relay Functions .................................................................................................................... 58
General Setup Procedure.............................................................................................................................. 59
Detailed Setup Procedure............................................................................................................................. 60
Viewing Active Alarms ........................................................................................................................................ 63
Viewing the Priority 1 Log ................................................................................................................................... 64
Clearing the Priority 1 Log ................................................................................................................................... 65
CHAPTER 5—MAINTENANCE AND TROUBLESHOOTING ......................................................................67
Maintenance ........................................................................................................................................................... 67
Battery-Backed RAM..................................................................................................................................... 67
Troubleshooting..................................................................................................................................................... 68
Getting Technical Support ................................................................................................................................... 69
APPENDICES
Appendix A—Circuit Monitor Dimensions ...................................................................................................... 71
Appendix B—Specifications ................................................................................................................................ 73
Appendix C—Installing Terminal Strip Covers ............................................................................................... 75
FIGURES
2-1 Circuit monitor front panel ...................................................................................................................... 10
2-2 Back of the circuit monitor ....................................................................................................................... 11
3-1 Example of disconnect breaker for CE compliance ..............................................................................14
3-2 Panel preparation ...................................................................................................................................... 16
3-3 Circuit monitor mounted in electrical panel ......................................................................................... 16
3-4 3-phase, 3-wire delta connection ............................................................................................................. 18
3-5 3-phase, 4-wire wye, ground connection ............................................................................................... 19
3-6 3-phase, 4-wire wye, ground connection, metered neutral ................................................................. 20
3-7 3-phase, 4-wire wye, 3-wire load ............................................................................................................ 21
3-8 2-1/2 element metering system type 42 (calculated neutral).............................................................. 22
3-9 2-1/2 element metering system type 43 ................................................................................................. 23

Contents
iii
3-10 DC control power connections ................................................................................................................ 24
3-11 Circuit monitors connected to one set of PTs and one CPT ................................................................ 25
3-12 Deriving L-L control power from phase PT inputs .............................................................................. 27
3-13 Deriving L-N control power from phase PT inputs .............................................................................27
3-14 Grounding the circuit monitor ................................................................................................................ 28
3-15 Circuit monitors connected to a system display for circuit monitors................................................ 29
3-16 POWERLOGIC devices connected directly to a personal computer ................................................. 30
3-17 POWERLOGIC devices connected to an Ethernet gateway ............................................................... 31
3-18 POWERLOGIC devices connected to a PNIM ......................................................................................32
3-19 POWERLOGIC devices connected to a SY/MAX programmable controller................................... 33
3-20 Daisy-chaining the RS-485 communications terminals........................................................................ 35
3-21 Terminator placement when last device on the link is a circuit monitor .......................................... 36
3-22 Multipoint communications adapter connected to PNIM .................................................................. 37
4-1 Choosing a Setup option .......................................................................................................................... 41
4-2 Flowchart for front panel configuration................................................................................................. 44
4-3 Flowchart for performing resets using the Resets option.................................................................... 57
4-4 Alarm/Relay setup.................................................................................................................................... 59
A-1 Circuit monitor dimensions ..................................................................................................................... 71
A-2 Circuit monitor dimensions with Input/Output and Voltage/Power Modules............................. 72
A-3 Circuit monitor with Input/Output Module ........................................................................................ 72
C-1 Installing terminal strip covers................................................................................................................ 75
TABLES
1-1 Summary of circuit monitor instrumentation ......................................................................................... 3
1-2 Class 3020 circuit monitors......................................................................................................................... 3
1-3 Circuit monitor feature comparison ......................................................................................................... 3
3-1 Typical circuit monitor mounting locations .......................................................................................... 15
3-2 Supported system wiring connections ................................................................................................... 17
3-3 Maximum distances of comms link at different baud rates ................................................................ 34
4-1 Factory defaults for front panel configuration parameters ................................................................. 42
4-2 Supported system type system code selections .................................................................................... 48
4-3 Maximum distances of comms link at varying baud rates ................................................................. 53

Chapter 1—Introduction
1
CHAPTER 1—INTRODUCTION
CHAPTER CONTENTS This chapter offers a general description of the circuit monitor, describes
important safety precautions, tells how to best use this bulletin, and lists
related documents. Topics are discussed in the following order:
What is the Circuit Monitor?................................................................................. 1
Expanded Memory ...................................................................................................3
Requirements for Using ...............................................................................4
Identifying the Series and Firmware Revisions........................................4
Model Numbers ............................................................................................4
Upgrading Existing Circuit Monitors ........................................................5
Memory Options Summary.........................................................................5
Safety Precautions................................................................................................... 6
Using This Bulletin ................................................................................................. 6
Notational Conventions ......................................................................... 6
Topics Not Covered Here ...................................................................... 7
Related Documents .................................................................................................7
Reference Manual ......................................................................................8
Note: This edition of the circuit monitor instruction bulletin describes features available
in series G4 or later and firmware version 17.009 (or higher). Series 2000 circuit
monitors with older series numbers or firmware versions will not include all features
described in this instruction bulletin. If you have Series 2000 circuit monitors that do
not have the latest firmware version and you want to upgrade their firmware,
contact your local Schneider Electric representative for information on purchasing
the Class 3020 Type CM-2000U Circuit Monitor Firmware Upgrade Kit.
WHAT IS THE The POWERLOGICCircuit Monitor is a multifunction, digital
CIRCUIT MONITOR? instrumentation, data acquisition and control device. It can replace a variety
of meters, relays, transducers and other components. The circuit monitor is
equipped with RS-485 communications for integration into any power
monitoring and control system. However, POWERLOGIC System Manager
application software—written specifically for power monitoring and
control—best supports the circuit monitor’s advanced features.
The circuit monitor is a true rms meter capable of exceptionally accurate
measurement of highly nonlinear loads. A sophisticated sampling technique
enables accurate, true rms measurement through the 31st harmonic. Over 50
metered values plus extensive minimum and maximum data can be viewed
from the six-digit LED display. Table 1-1 on page 3 provides a summary of
circuit monitor instrumentation.
The circuit monitor is available in several models to meet a broad range of
power monitoring and control applications. Table 1-2 on page 3 lists the
circuit monitor models. Table 1-3 compares the features available by model.
Circuit monitor capabilities can be expanded using add-on modules that
mount on the back of the circuit monitor. A voltage/power module and
several input/output modules are available. See I/O Capabilities in the Circuit
Monitor Reference Manual for a description of the available I/O modules.

Bulletin No. 3020IB9814
December 1998
2
Using POWERLOGIC application software, users can upgrade circuit
monitor firmware through either the RS-485 or front panel optical communi-
cations ports. This feature can be used to keep all circuit monitors up to date
with the latest system enhancements.
Some of the circuit monitor’s many features include:
• True rms metering (31st harmonic)
• Accepts standard CT and PT inputs
• Certified ANSI C12.16 revenue accuracy
• High accuracy—0.2% current and voltage
• Over 50 displayed meter values
• Min/Max displays for metered data
• Power quality readings—THD, K-factor, crest factor
• Real time harmonic magnitudes and angles
• Current and voltage sag/swell detection and recording
• On-board clock/calendar
• Easy front panel setup (password protected)
• RS-485 communications standard
• Front panel, RS-232 optical communications port standard
• Modular, field-installable analog and digital I/O
• 1 ms time stamping of status inputs for sequence-of-events recording
• I/O modules support programmable KYZ pulse output
• Setpoint-controlled alarm/relay functions
• On-board event and data logging
• Waveform and event captures, user-selectable for 4, 12, 36, 48, or 60 cycles
• 64 and 128 point/cycle waveform captures
• High-speed, triggered event capture
• Programming language for application specific solutions
• Downloadable firmware
• System connections
– 3-phase, 3-wire Delta
– 3-phase, 4-wire Wye
– Metered or calculated neutral
– Other metering connections
• Optional voltage/power module for direct connection to 480Y/277V
• Optional control power module for connecting to 18–60 Vdc control power
• Wide operating temperature range standard (-25 to +70°C)
• UL Listed, CSA certified, and CE marked
• MV-90TM billing compatible
• Pre-configured data log and alarms
What is the Circuit Monitor?
(cont.)

Chapter 1—Introduction
3
Type Description
CM-2050 Instrumentation, 1% accuracy
CM-2150 Instrumentation, 0.2% accuracy, data logging, alarm/relay functions
CM-2250 Waveform capture, plus CM-2150 features
CM-2350 Instrumentation, waveform capture, 0.2% accuracy
CM-2450 Programmable for custom applications, plus-2350 features
Table 1-2
Class 3020 Circuit Monitors
Table 1-1
Summary of Circuit Monitor Instrumentation
Table 1-3
Circuit Monitor Feature Comparison
EXPANDED MEMORY New Series G4 (or higher) circuit monitor models CM-2150 and higher now
are factory-equipped with 100 kilobytes (100K) of nonvolatile memory.
(Earlier Series G3 models CM-2150 and CM-2250 shipped with 11K of
memory, models CM-2350 and CM-2450 with 100K of memory.)
Real-Time Readings
•Current (per phase, N, G, 3Ø)
•Voltage (L-L, L-N)
•Real Power (per phase, 3Ø)
•Reactive Power (per phase, 3Ø)
•Apparent Power (per phase, 3Ø)
•Power Factor (per phase, 3Ø)
•Frequency
•Temperature (internal ambient)*
•THD (current and voltage)
•K-Factor (per phase)
Demand Readings
•Demand Current (per-phase present, peak)
• Demand Voltage (per-phase present, peak)*
•Average Power Factor (3Ø total)*
•Demand Real Power (3Ø total)
•Demand Reactive Power (3Ø total)*
•Demand Apparent Power (3Ø total)
•Coincident Readings*
•Predicted Demands*
Energy Readings
• Accumulated Energy, Real
• Accumulated Energy, Reactive
• Accumulated Energy, Apparent*
• Bidirectional Readings*
Power Analysis Values*
• Crest Factor (per phase)
• K-Factor Demand (per phase)
• Displacement Power Factor (per phase, 3Ø)
• Fundamental Voltages (per phase)
• Fundamental Currents (per phase)
• Fundamental Real Power (per phase)
• Fundamental Reactive Power (per phase)
• Harmonic Power
• Unbalance (current and voltage)
• Phase Rotation
• Harmonic Magnitudes & Angles (per phase)
* Available via communications only.
Feature CM-2050 CM-2150 CM-2250 CM-2350 CM-2450
Full Instrumentation ✘✘✘✘✘
RS-485 Comm Port ✘✘✘✘✘
Front Panel Optical Comm Port ✘✘✘✘✘
1% Accuracy Class ✘
0.2% Accuracy Class ✘✘✘✘
Alarm/Relay Functions ✘✘✘✘
On-board Data Logging ✘✘✘✘
Downloadable Firmware ✘✘✘✘
Date/Time for Each Min/Max ✘✘✘✘
Waveform Capture ✘✘✘
Extended Event Capture ✘✘✘
Extended Memory (up to 1.1 Meg.)* ✘✘✘✘
Sag/Swell Detection ✘✘
Programmable for Custom Applications ✘
* Standard memory: CM-2150, CM-2250, CM-2350, and CM-2450 = 100K; CM-2452 = 356K

Bulletin No. 3020IB9814
December 1998
4
EXPANDED MEMORY (cont.) For applications where additional memory is required, you can order a
circuit monitor with an optional 512K or 1024K memory expansion card,
resulting in 612K or 1124K, respectively, total nonvolatile memory (100K
base memory plus the expansion card memory). Memory upgrade kits are
also available for most earlier circuit monitors. See Upgrading Existing
Circuit Monitors, page 5.
Requirements for Using System Manager software version 3.02 with Service Update 1, 3.02a with
Expanded Memory Service Update 1, or 3.1 (or higher) is required to take advantage of expan-
sion card memory or the 100K of memory standard on G4 circuit monitors.
Earlier versions of System Manager software will recognize only 11K (the
Series G3 and earlier memory capacity) of available memory.
Also, your circuit monitor must be equipped with firmware version 17.008 or
later to take advantage of expanded memory. The following section tells how
to determine the firmware version shipped with your circuit monitor.
To determine if your circuit monitor firmware version has been updated
with downloadable firmware, see Viewing Configuration Data in Protected
Mode, page 45.
To obtain the latest available firmware revision contact your local Schneider
Electric representative (see Note, page 1.)
Identifying the Series and The circuit monitor series and firmware revision number are printed on a
Firmware Revisions sticker on the top of the circuit monitor enclosure. Figure 1-1 shows a sample
sticker.
63230-204-106
Series: G2C
U6 REV: 16-16.007
U33 REV: 16.007
Series
Firmware Revision
Figure 1-1: Circuit monitor series/firmware revision sticker
Model Numbers Circuit monitor models equipped with an optional memory expansion card
are differentiated from standard models by a suffix—either -512k or -1024k—
added to the model number (table 1-4). As shown in the table, the memory
expansion option is available for model numbers CM-2150, CM-2250,
CM-2350, and CM-2450. The CM-2452 circuit monitor is now obsolete and
has been replaced by the CM-2450-512k, which has more memory at a lower
price than the CM-2452. However, existing CM-2452 circuit monitors can be
upgraded as detailed on the following page.
Table 1-4
Circuit Monitor Model Numbers
Standard Models Models with 512k Option Models with 1024k Option
3020 CM-2050 N/A N/A
3020 CM-2150 3020 CM-2150-512k 3020 CM-2150-1024k
3020 CM-2250 3020 CM-2250-512k 3020 CM-2250-1024k
3020 CM-2350 3020 CM-2350-512k 3020 CM-2350-1024k
3020 CM-2450 3020 CM-2450-512k 3020 CM-2450-1024k

Chapter 1—Introduction
5
Upgrading Existing Memory upgrade kits are available for field installation by a qualified
Circuit Monitors electrician. No special tools are required.
Table 1-5
Memory Upgrade Kit Part Numbers
Part Number Description
3020 CM-MEM-512K 512K Memory Upgrade Kit for Series 2000 Circuit Monitors
3020 CM-MEM-1024K 1024K Memory Upgrade Kit for Series 2000 Circuit Monitors
For Series G3 and earlier circuit monitors, the memory upgrade kit can be
installed only in circuit monitor models CM-2350 and CM-2450.
Note: Model CM-2452 was factory-equipped with 100K of memory and a 256K
memory expansion card, for a total of 356K of memory. The 256K card can be
removed and replaced with a 512K or 1024K expansion card, for total memory of
either 612K or 1124K.
The memory upgrade kit can be installed in Series G4 models CM-2150 and
higher. Memory upgrade kits are available with either the 512k or 1024k
memory card (see table 1-5). No special tools are required for installation.
Table 1-6
Series 2000 Circuit Monitor Memory Options
Total Memory Capacity
Model Number Series G3 or Earlier Series G4 or Later
Standard 512K Expansion 1024K Expansion Standard 512K Expansion 1024K Expansion
CM-2050 N/A N/A N/A N/A N/A N/A
CM-2150 11K N/A N/A 100K 612K 1124K
CM-2250 11K N/A N/A 100K 612K 1124K
CM-2350 100K 612K 1124K 100K 612K 1124K
CM-2450 100K 612K 1124K 100K 612K 1124K
CM-2452 356K 612K ➀1124K ➀Obsolete
Memory Options Summary Table 1-6 summarizes the memory options now available for Series 2000
Circuit Monitors. To obtain price and availability on circuit monitors with
expanded memory and circuit monitor memory upgrade kits, contact your
local sales representative.
Only qualified electrical workers should install a memory upgrade kit
in a circuit monitor. Perform the upgrade only after reading the
installation instructions shipped with the upgrade kit. Before remov-
ing the cover of the circuit monitor to install the memory board:
• Disconnect all voltage inputs to the circuit monitor
• Short the CT secondaries
• De-energize the control power inputs
Failure to observe this precaution will result in death or
serious injury.
HAZARD OF ELECTRIC SHOCK, BURN, OR EXPLOSION
DANGER
!
➀CM-2452 256K memory expansion card removed and replaced with 512K or 1024K memory expansion card.

Bulletin No. 3020IB9814
December 1998
6
USING THIS BULLETIN This document provides the information required to install and operate the
circuit monitor. The document consists of a table of contents, five chapters,
and three appendices. Chapters longer than a few pages begin with a chapter
table of contents. To locate information on a specific topic, refer to the table
of contents at the beginning of the document, or the table of contents at the
beginning of a specific chapter.
Notational Conventions This document uses the following notational conventions:
•Procedures. Each procedure begins with an italicized statement of the
task, followed by a numbered list of steps. Procedures require you to take
action.
•Bullets. Bulleted lists, such as this one, provide information but not
procedural steps. They do not require you to take action.
•Cross-References. Cross-references to other sections in the document
appear in boldface. Example: see Mounting the Circuit Monitor in
Chapter 3.
SAFETY PRECAUTIONS
• Only qualified electrical workers should install this equipment.
Such work should be performed only after reading this entire set
of instructions.
• The successful operation of this equipment depends upon proper
handling, installation, and operation. Neglecting fundamental
installation requirements may lead to personal injury as well as
damage to electrical equipment or other property.
• Before performing visual inspections, tests, or maintenance on this
equipment, disconnect all sources of electric power. Assume that
all circuits are live until they have been completely de-energized,
tested, grounded, and tagged. Pay particular attention to the
design of the power system. Consider all sources of power,
including the possibility of backfeeding.
Failure to observe this precaution will result in death, serious
injury or equipment damage.
HAZARD OF BODILY INJURY OR EQUIPMENT DAMAGE
DANGER
!

Chapter 1—Introduction
7
➀Reference numbers listed are the original document numbers. If a document has been revised, the listed number will be followed by a
revision number, for example R10/97.
Topics Not Covered Here Some of the circuit monitor’s advanced features, such as on-board data log
and event log files, must be set up over the communications link using
POWERLOGIC application software. This circuit monitor instruction bulletin
describes these advanced features, but does not tell how to set them up. For
instructions on setting up these advanced features, refer to the appropriate
application software instruction bulletin.
RELATED DOCUMENTS Several optional add-on modules are available for use with the circuit
monitor. Each module is shipped with an instruction bulletin detailing
installation and use of the product. Available add-on modules for the
circuit monitor are listed below.
Instruction Bulletin Title Reference No.➀
•POWERLOGIC Control Power Module (CPM-48) 3090IM9305
•POWERLOGIC Ride-Through Module 3090IM9701
•I/O Modules (IOM-11/44/18) 3020IM9304
•I/O Modules (IOM-4411/4444) 3020IM9401
•Voltage/Power Module 3090IM9302
•Optical Communications Interface (OCI-2000) 3090IM9303
• Ethernet Communications Module (ECM-2000/ECM-RM) 3020IB9818

Bulletin No. 3020IB9814
December 1998
8
Reference Manual This Installation and Operation manual provides the information necessary
to install and operate the circuit monitor. Additional information on the
circuit monitor’s advanced features is available in English only in the
POWERLOGIC Circuit Monitor Reference Manual. The reference manual
includes information on the following topics:
• Metering Capabilities
• Input/Output Capabilities
• Alarm Functions
• Logging
• Waveform Capture
• Disturbance Monitoring
• CM-2450 with Programming Language
• Advance Topics
• Communication Cable Pinouts
• Abbreviated Register Listing
• Calculating Log File Sizes
• Alarm Setup Information
• Reading and Writing Registers from the Front Panel

Chapter 2—Hardware Description
9
CHAPTER 2—HARDWARE DESCRIPTION
FRONT PANEL The circuit monitor front panel is designed for maximum ease of use. The
circuit monitor has five modes of operation:
• METERS — for viewing real-time metered data
• MIN — for viewing the minimum of the selected metered value
• MAX — for viewing the maximum of the selected metered value
• ALARM — for viewing the status of on-board alarms
• [Setup] — for setting up the circuit monitor
The general procedure for displaying data is simple:
1. Press the MODE button to select one of the five available modes.
2. Press the SELECT METER buttons to select a metered value.
3. Press the PHASE button to select a phase.
In [Setup] mode, use the alternate descriptions in grey to the right of the
LEDs. In SETUP mode, the PHASE, MODE, and SELECT METER buttons
function differently than in the other display modes. For details see
Chapter 4—Front Panel Operation.
Figure 2-1 shows the front panel of the circuit monitor. A description of the
front panel follows.
➀6-Digit LED display. For local display of metered values.
➁Kilo/Mega LEDs. The Kilo LED lights when the displayed value is in
Kilo units. The Mega LED lights when the displayed value is in Mega
units.
➂Meter Indication LEDs. The lit LED indicates the value being displayed.
➃Setup/Reset Parameters. These grey, bracketed values are used to set up
the circuit monitor and perform resets. Refer to these values when in
[Setup] mode.
➄Phase Indication LEDs. Indicate the phase for the displayed value.
Note: If you select a metered value that does not provide a reading for
the selected phase, the circuit monitor automatically jumps to a phase for
which a reading exists. For example, assume that you are viewing Phase
A Power Factor, then change to Frequency; the circuit monitor
automatically jumps from Phase A to 3-Phase, since the circuit monitor
does not provide a Phase A Frequency reading.
➅PHASE Select Button. Press to select the phase for the selected meter
value. Note: In [Setup] mode, press this button to move from one setup
parameter to the next. See Chapter 4—Front Panel Operation for details.
➆SELECT METER buttons. Press to change the metered value being
displayed. Note: In [Setup] mode, press these buttons to change the value of
the displayed setup parameter. See Chapter 4—Front Panel Operation
for details.

Bulletin No. 3020IB9814
December 1998
10
o AMMETER (A)
o VOLTMETER, L-L (V)
o VOLTMETER, L-N (V)
o WATTMETER (W)
o VARMETER (VAr)
o VA METER (VA)
o POWER FACTOR METER
o FREQUENCY METER (Hz)
o DEMAND AMMETER (A)
o DEMAND POWER (W)
o DEMAND POWER (VA)
o WATTHOUR METER
o VARHOUR METER
o THD, CURRENT (%)
o THD, VOLTAGE (%)
o K-FACTOR
CIRCUIT MONITOR
[CT Primary]
[PT Primary]
[Sys. Type]
[Dmd. Int.]
[WH/Pulse]
[Address]
[Baud Rate]
[Nom. Freq.]
[Reset]
[Reset]
[Reset]
[Reset]
[Reset]
[Rst. Min/Max]
[Set Password]
[Accept]
3-PHASE
A (A-B)
B (B-C)
C (C-A)
N
SELECT
METER
[Value]
METERS
MIN
MAX
ALARM
[Setup]
Kilo
Mega
PHASE
MODE
Optical
Comm Port

➇Mode Indication LEDs. These LEDs indicate the present display mode.
The Alarm LED flashes when an alarm is active.
➈MODE Select Button. Press to select the display mode.
➉Optical Communications Port. This port allows the circuit monitor to
communicate to a portable computer using the optional optical
communications interface (Class 3090 Type OCI-2000). The OCI-2000
mounts magnetically to the circuit monitor and provides a standard
RS-232 interface. Anything that can be done over the RS-485
communications link—including circuit monitor setup—can also be done
using the optical communications port.
Figure 2-1: Circuit monitor front panel
➅
➆
➁
➀
➉
➇
➈
➄
➂
➃

Chapter 2—Hardware Description
11
REAR CONNECTIONS Figure 2-2 shows the rear of the circuit monitor. Identified parts are as
follows:
➀Auxiliary Current Inputs
➁3-Phase Current Inputs
➂3-Phase Voltage Inputs
➃RS-485 Communications Terminals
➄Input/Output Module Connector
➅Control Power Terminals
Note: See Chapter 3—Installation for wiring instructions.
Figure 2-2: Back of the circuit monitor
(+)L G N(-)
IN+ IN- OUT+ OUT- SHLD
20 21 22 23 24
910111256781234
V
a
V
b
V
c
V
n
I
a+
I
a-
I
b+
I
b-
I
c+
I
c-
I
n+
I
n-
25 26 27
3 PHASE
VOLTAGE
INPUTS
120 VOLTS
NOMINAL
AUXILIARY
CURRENT
INPUTS
5 AMPS
NOMINAL
3 PHASE
CURRENT
INPUTS
5 AMPS
NOMINAL
CONTROL
POWER
RS-485
DATA COMMUNICATIONS
TYPE 1 ENCLOSURE
INDOOR USE ONLY
➅
➄
➀
➁
➂
➃

Chapter 3—Installation
13
CHAPTER 3—INSTALLATION
CHAPTER CONTENTS This chapter tells how to mount and wire the circuit monitor. Refer to the
table of contents below to locate a specific topic.
CE Compliance........................................................................................................14
Mounting the Circuit Monitor ............................................................................ 15
Wiring CTs, PTs, and Control Power................................................................. 17
Wiring Multiple Circuit Monitors to a Single Set of PTs/CPT .......... 25
Deriving Control Power from Phase PT Inputs.................................... 26
Grounding the Circuit Monitor .......................................................................... 27
Communications Wiring ..................................................................................... 28
Connecting to a System Display ............................................................. 29
Connecting to a Personal Computer ...................................................... 30
Connecting to a POWERLOGIC Ethernet Gateway ..............................31
Connecting to a POWERLOGIC Network Interface Module ............. 32
Connecting to a SY/MAXProgrammable Controller ....................... 33
Length of the Communications Link ..................................................... 34
Daisy-Chaining POWERLOGIC Devices .............................................. 35
Terminating the Communications Link ................................................ 36
Biasing the Communications Link ......................................................... 37
HAZARD OF PERSONAL INJURY OR DEATH
Only qualified electrical workers should install and wire this
equipment. Such work should be performed only after reading this
complete set of instructions.
Failure to observe this precaution will result in death, serious
injury or equipment damage.
DANGER
!

Bulletin No. 3020IB9814
December 1998
14
CE COMPLIANCE To comply with CE Electromagnetic Compatibility requirements, the circuit
monitor must be installed in a metallic enclosure (switchgear, for example).
For CE compliance, Merlin Gerin Disconnect Breakers Type P25M #21104 or
IEC 947 equivalent must be connected directly to the metering voltage and
control power inputs (figure 3-1).
Note: The disconnect switch must be placed within reach of the circuit monitor
and labeled “Disconnect Switch for Circuit Monitor.”
Figure 3-1: Example of disconnect breaker for CE compliance
Va
Vb
Vc
Vn
L
Disconnect
Breaker
Note: The disconnect breaker
must be installed
here
If control power is derived from the metering voltage source,
no additional disconnect device is necessary.
However, if control power is derived from a separate source,
an
additional disconnect breaker must be installed here
between the control power terminals and the control power
source.
(See inset box at right for detail of additional disconnect
breaker.)
L1L2
G
N
Metering Voltage Source
Note: See figures 3-4 through 3-10 for possible connection types.
Control Power
Source

Chapter 3—Installation
15
MOUNTING THE CIRCUIT The circuit monitor is a flush-mounted device that projects through the back
MONITOR of a panel or breaker cell door. Table 3-1 lists typical mounting locations in
various power equipment designs.
Note: Series 2000 circuit monitors use the same cutout dimensions and
hole patterns as the Series 100, 200 circuit monitors, but the required rear clearances
have increased.
When choosing a mounting location, consider the following points:
• Allow for easy access to the rear of the circuit monitor.
• Allow extra space for all wires, shorting blocks, or other components.
• Consider the depth of the circuit monitor. Include extra depth for add–on
modules that you might add in the future. See Appendix A for circuit
monitor dimensions.
• Be sure that ambient conditions fall within the acceptable range: operating
temperature –25°C to +70°C, relative humidity, 5–95% non-condensing.
For CE mounting requirements, see CE Compliance, page 14.
Note: Before preparing the cutout, refer to Appendix A and verify that the
required clearances exist.
To mount the circuit monitor, complete the following steps:
1. Prepare the cutout and mounting holes. Refer to figure 3-2 for exact
dimensions.
2. Insert the circuit monitor through the cutout from the front of the panel
or breaker cell door. Guide the circuit monitor mounting studs through
the holes in the panel.
3. Secure the circuit monitor to the panel using four #10-32 hex nuts
included in the circuit monitor hardware kit (63230-204-16). Figure 3-3
shows the circuit monitor mounted in an electrical panel.
Table 3-1
Typical Circuit Monitor Mounting Locations
Equipment Type Mounting Location
QED Switchboards, Model 6 MCCs Main Meter Location or Aux. Section
POWER-ZONEIII Switchgear Main Instrument Compartment Door
HVL and VISI/VACSwitchgear 9-inch Front Panel or Instrument Door
Metal-Clad and Substation CBs Standard Relaying Locations
ISO-FLEXMedium Voltage MCCs Standard Relaying Locations

Bulletin No. 3020IB9814
December 1998
16
4.06
104
8.11
206
10.41
264
5.21
132
3.71
94
7.41
188
11.03
280
10.10
256
5.52
140
0.93
24
8 Holes
0.09
2
R Typical
0.28
7Diameter
Figure 3-2: Panel preparation
Figure 3-3: Circuit monitor mounted in electrical panel
Panel
Secure to panel
using #10-32 hex
nuts (4 required)
Inches
Millimeters