PowerLogic PM-600, PM-620, PM-650 User Manual

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Instruction Bulletin

3020IM9503R6/98

December 1998

(Replaces 3020IM9503R8/97 dated October 1997)

Power Meter

Class 3020

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 appear throughout this bulletin to warn of potential hazards.

Used where there is a hazard of severe bodily injury or death. Failure to follow a “DANGER” instruction

Used where there is a hazard of bodily injury or death. Failure to follow a “WARNING” instruction can result in death or bodily injury.

Used where there is a hazard of equipment damage. Failure to follow a “CAUTION” instruction can result in damage to equipment.

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.

DANGER

will

result in death or

WARNING

CAUTION

severe

bodily injury.

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.

TECHNICAL SUPPORT

For technical support, contact the

Power Monitoring and Control Systems Technical Support Center.

Hours are 7:30 A.M. to 4:30 P.M., Central Time, Monday through Friday.

www.powerlogic.com BBS: (615) 287-3414

Fax: (615) 287-3404 Phone: (615) 287-3400

POWERLOGIC, POWERLINK, Square D, and are Registered Trademarks of Square D Company. System Manager is a trademark of Square D.

to any other media without the written permission of Square D Company.

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Bulletin No. 3020IM9503R6/98 Power Meter December 1998 Contents

Contents

Chapter 1—Introduction ...................................................................... 1

What is the Power Meter? ................................................................................ 1

Using This Bulletin............................................................................................ 3

Notational Conventions ................................................................................ 3

Not Covered in this Bulletin .......................................................................... 3

Chapter 2—Safety Precautions ........................................................... 5

Chapter 3—Hardware Description ...................................................... 7

Display..............................................................................................................7

Power Meter Connections .............................................................................. 10

Chapter 4—Installation .......................................................................11

Power Meter/Display Mounting Options ......................................................... 11

Mounting the Display...................................................................................... 12

In Existing 1% Ammeter/Voltmeter Cutout.................................................. 12

On Panel Without Existing 1% Ammeter/Voltmeter Cutout ........................ 13

Mounting the Power Meter ............................................................................. 14

Directly Behind the Display......................................................................... 14

Remote Mounting ....................................................................................... 16

DIN Rail Mounting ...................................................................................... 18

Chapter 5—Wiring .............................................................................. 21

Wiring CTs, PTs, and Control Power ..............................................................21

Control Power Transformer (CPT) Sizing ................................................... 22

Control Power Fuses .................................................................................. 22

Metering Potential Transformers (PTs) ....................................................... 22

CE Compliance........................................................................................... 22

Deriving Control Power from Phase Voltage Inputs ................................... 31

Grounding the Power Meter ........................................................................... 32

Solid-State KYZ Pulse Output ........................................................................ 33

Chapter 6—Communications ............................................................ 35

Protocols ........................................................................................................ 35

POWERLOGIC Protocol Communications Wiring ......................................... 35

Connecting to a Personal Computer via POWERLOGIC Communications....

Connecting to a POWERLOGIC Network Interface Module (PNIM) Using

POWERLOGIC Communications ............................................................. 37

Connecting to a SY/MAX Programmable Controller Using

POWERLOGIC Communications ............................................................. 38

Modbus RTU Protocol .................................................................................... 39

Jbus Protocol ................................................................................................. 39

Connecting to a PC Using Modbus or Jbus Communications ....................... 40

Length of the Communications Link (POWERLOGIC, Modbus, or Jbus) ...... 41

Daisychaining PM&CS Devices (POWERLOGIC, Modbus, or Jbus) ............ 41

Biasing the Communications Link (POWERLOGIC, Modbus, or Jbus) ......... 42

Terminating the Communications Link (POWERLOGIC, Modbus, or Jbus) .. 44

Power Meter Bulletin No. 3020IM9503R6/98 Contents December 1998

Chapter 7—Display Operation........................................................... 47

Introduction .................................................................................................... 47

Modes.............................................................................................................47

Accessing a Mode ...................................................................................... 48

Setup Mode ................................................................................................ 49

Resets Mode...............................................................................................50

Diagnostics Mode ....................................................................................... 50

Display Modes ............................................................................................50

How the Buttons Work ................................................................................ 51

Mode

Button............................................................................................ 51

Arrow Buttons..........................................................................................51

Select

Contrast Button ....................................................................................... 51

Setting Up the Power Meter ........................................................................... 52

Performing Resets ......................................................................................... 54

Viewing Diagnostic Information ...................................................................... 55

Using Display Modes .....................................................................................55

Setting Up Onboard Alarms (PM-650 only).................................................... 55

Viewing Active Alarms (PM-650 only).............................................................56

Button........................................................................................... 51

Chapter 8—Metering Capabilities ..................................................... 57

Real-Time Readings.......................................................................................57

Min/Max Values (PM-650 Only)...................................................................... 57

Power Factor Min/Max Conventions .............................................................. 58

Energy Readings............................................................................................ 61

Power Analysis Values ................................................................................... 62

Demand Readings (PM-620 and PM-650 Only) ............................................ 63

Demand Power Calculation Methods ......................................................... 63

Sliding Block Interval Demand ................................................................ 63

Block Interval Demand with Subinterval Option ...................................... 64

Synch to Comms..................................................................................... 64

Predicted Demand ...................................................................................... 64

Peak Demand ............................................................................................. 64

KYZ Pulse Output .......................................................................................... 65

Calculating the Pulse Constant .................................................................. 65

Chapter 9—Onboard Alarming (PM-650 Only) ................................. 66

Setpoint-Driven Alarms .................................................................................. 66

Setpoint-Controlled Relay Functions.............................................................. 67

Undervoltage .............................................................................................. 68

Unbalance Current .....................................................................................68

Unbalance Voltage ..................................................................................... 68

Chapter 10—Logging (PM-650 Only) ................................................ 69

Alarm Log ....................................................................................................... 69

Event Log ....................................................................................................... 69

Data Log......................................................................................................... 69

Alarm-Driven Data Log Entries ...................................................................... 69

Storage Considerations.................................................................................. 69

Bulletin No. 3020IM9503R6/98 Power Meter December 1998 Contents

Appendices

Appendix A—Specifications ............................................................................... 70

Appendix B—Dimensions .................................................................................. 72

Appendix C—Communication Cable Pinouts .................................................... 73

Appendix D—Additional Wiring Diagrams ......................................................... 74

Appendix E—Using the Command Interface ..................................................... 79

Appendix F—Register List ................................................................................. 81

Appendix G—Modbus and Jbus Functions Supported.................................... 101

Appendix H—2-Wire Modbus or Jbus ............................................................. 103

Appendix I—Alarm Setup (PM-650 Only) ........................................................ 104

Appendix J—Calculating Log File Size (PM-650 Only) ................................... 108

Illustrations

3-1: Power meter display components .............................................................. 8

3-2: Power meter display, front and back.......................................................... 9

3-3: Front of power meter and terminal shield label ........................................ 10

4-1: Mounting power meter and display on panel with

existing ammeter/voltmeter cutout ....................................................... 15

4-2: Mounting power meter on panel with no existing cutout ..........................17

4-3: Panel mount for the power meter display ................................................ 17

4-4: Mounting power meter on 35 mm DIN rail ............................................... 19

5-1: Clamp-on ferrite and disconnect breaker for CE compliance .................. 23

5-2: Opening the clamp-on ferrite ................................................................... 23

5-3: 3-phase, 3-wire delta direct voltage connection with 2 CTs..................... 24

5-4: 3-phase, 3-wire delta with 2 PTs and 2 CTs.............................................25

5-5: 3-phase, 3-wire delta with 2 PTs and 3 CTs.............................................26

5-6:

5-7: 3-phase, 4-wire wye, ground connection, with 3 PTs and 3 CTs.............. 28

5-8: DC control power wiring ........................................................................... 29

5-9: Power meter wire routing .........................................................................30

5-10: KYZ pulse output .....................................................................................33

5-11: Typical KYZ pulse output connection for use as an alarm contact .......... 34

6-1: Power meters connected to a personal computer via SY/LINK card .......36

6-2: Power meters connected to a PNIM ........................................................ 37

6-3: Power meters connected to a SY/MAX programmable controller............ 38

3-phase, 4-wire wye, ground and direct voltage connection, with 3 CTs .....

Power Meter Bulletin No. 3020IM9503R6/98 Contents December 1998

6-4: Power meters connected to a personal computer via serial port .............40

6-5: Daisychaining the RS-485 communications terminals ............................. 42

6-6: Connecting the power meter as the first device

on a PM&CS or Modbus communications link ...................................... 42

6-7: Terminating power meter with MCTAS-485 ............................................. 44

6-8: Terminating power meter with terminal block and MCT-485 .................... 45

7-1: Navigating power meter parameters ........................................................ 48

7-2: Power meter display buttons.................................................................... 51

7-3: Power meter setup flowchart ................................................................... 53

8-1: Power factor min/max example................................................................ 59

8-2: Default VAR sign convention ................................................................... 59

8-3: Alternate VAR sign convention ................................................................ 60

9-1:

How the power meter handles setpoint-driven alarms ...............................

9-2: Sample event log entry ............................................................................ 67

B-1: Dimensions of power meter and display .................................................. 72

D-1: 240/120 V 1-phase, 3-wire direct voltage connection with 2 CTs ............ 76

D-2: 3-phase, 4-wire delta with 3 PTs and 3 CTs............................................. 77

D-3: 3-phase, 4-wire wye, 3-wire load with 3 PTs and 2 CTs........................... 78

H-1: 2-wire Modbus or Jbus wiring ................................................................ 103

Tables

1-1: Summary of Power Meter Instrumentation ................................................ 2

1-2: Class 3020 Power Meters and Accessories............................................... 2

1-3: Components for assembling custom length cables ................................... 2

1-4: Power Meter Feature Comparison ............................................................. 3

4-1: Typical Locations for Mounting Display.................................................... 12

5-1: System Connection Types .......................................................................21

5-2: Control Power Transformer Sizing ........................................................... 22

6-1: Maximum Distances of Comms Link at Different Baud Rates ................. 41

6-2: Labeling the CAB-107 Leads ...................................................................43

7-1: Selecting Voltage Ranges for System Types ...........................................50

7-2: Factory Defaults for Power Meter Setup Parameters .............................. 52

8-1: Real-Time Readings ................................................................................ 57

8-2: Energy Readings ..................................................................................... 61

8-3: Power Analysis V alues............................................................................. 62

8-4: Demand Readings ................................................................................... 63

D-1: Power Meter System Wiring Connections ............................................... 75

H-1: Maximum Distances of 2-Wire Modbus or Jbus

Comms Link at Different Baud Rates................................................... 103

Bulletin No. 3020IM9503R6/98 Power Meter December 1998 Chapter 1—Introduction

CHAPTER 1—INTRODUCTION

WHAT IS THE POWER METER?

The POWERLOGIC Power Meter is a compact, low-cost power meter for basic industrial power monitoring applications. The power meter has been designed for ease of installation in industrial retrofit applications. Power meter applications include new equipment such as switchboards, panelboards, and Low Voltage Drawout (LVDO) feeders, and it can be used in POWERLINK installations for metering the main. Additionally, the power meter can be used for Motor Control Centers (MCCs) and busway.

The power meter can be purchased with an optional display for local display and setup. Also, the display can be purchased separately to be used as a power meter programmer. The display fits standard 4-1/4" (108 mm) ammeter and voltmeter cutouts. It connects to the power meter by a cable that supplies both communications and power.

All power meter modules can be mounted up to 50 feet (15.2 m) from the display. You can mount them on an enclosure floor or wall, on a horizontal 35 mm DIN rail, or directly behind the display on the panel door.

The power meter is completely supported in POWERLOGIC System Manager Software releases SMS-3000, SMS-1500 and PMX-1500, including setup and resets. SMS-770/700 v. 2.23 and EXP-550/500 v. 1.23 provide limited support, including real-time and historical data monitoring and PC-based alarming and trending.

Some of the power meter’s features include:

• ANSI C12.16 Revenue Accuracy

• True RMS Metering (31st Harmonic)

• Accepts Standard CT and PT Inputs

• Direct Connect up to 600 V

• Fits Standard 1% Ammeter/Voltmeter Mounting Holes

• Optional Display to View Meter Values

• Power Quality Readings—THD (Voltage and Current)

• On-board Clock/Calendar

• Easy Setup through Remote Display (Password Protected)

• RS-485 Communications Standard

• System Connections – 3-Phase, 3-Wire Delta (Metered or Calculated B Phase) – 3-Phase, 4-Wire Wye

• Operating Temperature Range (0°C to +60°C)

Power Meter Bulletin No. 3020IM9503R6/98 Chapter 1—Introduction December 1998

Table 1-1 below summarizes the power meter instrumentation common to all three models. Table 1-2 describes the three power meter models and accessories. You can assemble custom length cables using the components specified in Table 1-3. Table 1-4 compares features of those models.

Table 1-1

Summary of Power Meter Instrumentation

Real-Time Readings

• Current (per phase)

• Voltage (L-L, L-N)

• Real Power (per phase and 3Ø total)

• Reactive Power (per phase and 3Ø total)

• Apparent Power (per phase and 3Ø total)

• Power Factor, true (per phase, 3Ø)

• Frequency

Energy Readings

• Accumulated Energy, real 3Ø total

• Accumulated Energy, reactive 3Ø total

• Accumulated Energy, apparent 3Ø total

Table 1-2

Class 3020 Power Meters and Accessories

Type Description

PM-600 Instrumentation, 0.3% accuracy PM-620 PM-600 features, plus date/time stamp, THD/thd,

neutral current, demand values

PM-650 PM-620 features, plus alarms, min/max values,

data and event logs PMD-32 Power Meter Display (optional) with 1-ft. (0.3 m) cable SC-104 4-ft (1.2 m) cable (optional) SC-112 12-ft. (3.7 m) cable (optional) SC-130 30-ft. (9.1 m) cable (optional)

Table 1-3

Components for Assembling Custom Length Cables Description Mfr./Part Number Quantity

RJ-11, 6-position, 4-conductor ➀ Round Cable Modular Plug

Mouser 154-UL6234

or 2 plugs

AMP 5-569031-3

Signal and Control Cable

➀ Assemble with manufacturer’s recommended crimping tool.

Olflex 602604

or 50-ft. (15.2 m)

Unitronic 190 Maximum Length

(4-wire/26 AWG)

Bulletin No. 3020IM9503R6/98 Power Meter December 1998 Chapter 1—Introduction

Table 1-4

Power Meter Feature Comparison

Feature PM-600 PM-620 PM-650

Full Instrumentation ✘✘✘ RS-485 Communications Port ✘✘✘ Wiring Diagnostics ✘✘✘ ANSI C12.16 Accuracy ✘✘✘ Current Demand (per phase, neutral) ✘✘ Power Demand (3-phase total, present) ✘✘ Peak Power & Current Demand ✘✘ Date/Time Stamping ✘✘ THD or thd (Voltage and Current) ✘✘ Calculated Neutral Current ✘✘ Onboard Alarms ✘ Min/Max Readings ✘ Predicted Power Demand ✘ Data Log ✘ Event Log ✘ Demand Interval Synch to Comms ✘

Rolling Block Demand ✘

USING THIS BULLETIN

This document provides the information required to install and operate the power meter. The document consists of a table of contents, chapters, several appendices, and an index. To locate information on a specific topic, refer to the table of contents or the index.

Notational Conventions

This document uses the following notational conventions:

• Procedures. Each procedure begins with a 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 Power Meter Connections in Chapter 3.

Not Covered in this Bulletin

Some of the power meter’s features, such as PC-based logging, onboard logging for the PM-650, trending, and PC-based alarming, must be set up using POWERLOGIC application software. For instructions on setting up these features, refer to the application software instruction bulletin.

Note: The PM-650 is supported by POWERLOGIC System Manager Software (SMS)-3000 v. 3.1 (and higher).

Power Meter Bulletin No. 3020IM9503R6/98 Chapter 1—Introduction December 1998

Bulletin No. 3020IM9503R6/98 Power Meter December 1998 Chapter 2—Safety Precautions

CHAPTER 2—SAFETY PRECAUTIONS

DANGER

HAZARD OF ELECTRIC SHOCK, BURN, OR EXPLOSION.

• 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 these precautions will result in death, severe personal injury, or equipment damage!

Power Meter Bulletin No. 3020IM9503R6/98 Chapter 2—Safety Precautions December 1998

Bulletin No. 3020IM9503R6/98 Power Meter December 1998 Chapter 3—Hardware Description

CHAPTER 3—HARDWARE DESCRIPTION

DISPLAY

The optional power meter display is designed for maximum ease of use. The display has the following modes of operation:

• Setup—for setting up power meter

• Resets—to perform resets of peak demands min/max

➁

➀

, accumulated energy, and

• Diagnostics—for troubleshooting, read-only registers

• Summary—displays commonly viewed metered values

• Power—displays power values

• Energy—displays energy values

• Demand

• Power Quality

➀

—displays demand values

➀

—displays power quality values

• Alarm Log➁—displays and acknowledges onboard alarms

• Alarm Setup

• Min/Max

➁

—for setting up onboard alarms

➁

—displays minimum and maximum values

For details on how to use the optional display, see Chapter 7—Display Operation.

➀ When used with PM-620 and PM-650. ➁ When used with PM-650.

Power Meter Bulletin No. 3020IM9503R6/98 Chapter 3—Hardware Description December 1998

Figure 3-1 shows the power meter display. Display components are listed below:

➀ 2-Line Liquid Crystal Display. For local display of metered values. ➁ Arrow Buttons. Press to move through meter display screens. In Setup,

Resets, and Diagnostic modes, press to change values and, on the PM-650 only, Alarm Setup and Alarm Log.

➂ Mode Button. Press to scroll through the available modes. ➃ Contrast Button. Press to change the contrast of the display. ➄ Select Button. Press to select modes and Setup, Resets, and Diagnostic

values. On the PM-650 only, use this button to select Alarm values.

➀ ➁

➂ ➃

Mode

Select

Power Meter

Figure 3-1: Power meter display components

➄

Bulletin No. 3020IM9503R6/98 Power Meter December 1998 Chapter 3—Hardware Description

The display connects to the power meter via the display cable. One display communications port is located on the back of the display (figure 3-2, below). The other display communications port is located on the meter connections end of the power meter (figure 3-3).

Display Communications Port (Terminal 23)

Display Front

Display Back

Figure 3-2: Power meter display, front and back

Power Meter Bulletin No. 3020IM9503R6/98 Chapter 3—Hardware Description December 1998

POWER METER CONNECTIONS

Figure 3-3 shows the front of the power meter and the label on the terminal shield. Identified parts are as follows:

➀ 3-Phase Voltage Inputs ➁ Control Power Terminals ➂ KYZ Pulse Output ➃ 3-Phase Current Inputs ➄ Display Communications Port ➅ RS-485 Communications Terminals

Note: See Chapter 5—Wiring for wiring instructions.

➀

➁

➃

➅

Va Vb Vc Vn

➂

Ia– Ib– Ic–

➄

IN+

IN– OUT+ OUT– SHLD

Figure 3-3: Front of power meter and terminal shield label

Ia+ Ib+ Ic+

K Y Z

Bulletin No. 3020IM9503R6/98 Power Meter December 1998 Chapter 4—Installation

CHAPTER 4—INSTALLATION

DANGER

HAZARD OF ELECTRIC SHOCK, BURN, OR EXPLOSION.

Only qualified electrical workers should install and wire this equipment. Perform such work only after reading this complete set of instructions.

Failure to observe these precautions will result in death or severe personal injury!

CAUTION

HAZARD OF EQUIPMENT DAMAGE.

When mounting the power meter module, provide the following clearances (from enclosure walls or other objects): terminal end: 4" (102 mm); vented sides: 3" (76 mm). No clearance is necessary on the non-vented sides.

Failure to observe this precaution can result in equipment damage.

POWER METER/DISPLAY MOUNTING OPTIONS

There are several options for mounting the power meter module and display:

• display mounted on front of a power equipment panel; power meter module mounted on back of panel (figure 4-1, page 15)

• display mounted on front of panel; power meter mounted remotely inside of equipment, with the terminals

– up, mounted to bottom (floor) of equipment, or – perpendicular, mounted on side pan (figure 4-2, page 17)

• display mounted on front of panel, with the power meter module mounted on a 35 mm DIN rail (figure 4-4, page 19)

• no display; power meter mounted in one of the above locations

Mounting instructions for each of these options are described in this section.

When choosing a mounting location, consider the following:

• Allow for easy access to the meter connections end (where terminals are located) of the power meter module.

• Allow extra space for all wires, shorting blocks, or other components.

Power Meter Bulletin No. 3020IM9503R6/98 Chapter 4—Installation December 1998

• Be sure that ambient conditions fall within the acceptable range: operating temperature 0°C to +60°C, relative humidity 5–95%, non-condensing.

Note: Always refer to local and state electrical safety standards before mounting the power meter or display.

MOUNTING THE DISPLAY

The display can be mounted in the following locations:

• in a standard 1% ammeter/voltmeter panel cutout

• on an equipment panel where it will be necessary to cut a hole before mounting the display

Table 4-1 below shows possible locations for mounting the display.

Table 4-1

Typical Locations for Mounting Display

Equipment Type Mounting Location

QED Switchboards Disconnect Door



POWER-ZONE HVL and VISI/VAC Metal-Clad and Substation CBs Standard Relaying Locations ISO-FLEX Model 6 MCCs Main Meter Location or Auxiliary Section

III Switchgear Main Instrument Compartment Door



Switchgear 9-inch Front Panel or Instrument Door



Medium Voltage MCCs Low Voltage Door

In Existing 1% Ammeter/Voltmeter Cutout

To mount the display in a standard 1% ammeter/voltmeter cutout, follow these steps:

1. Turn off all power supplying the equipment before working on it. Following all safety precautions, remove the existing ammeter/voltmeter.

2. Position the display against the front of the panel. From the other side of the panel, line up the mounting holes in the panel with the mounting holes in the display (see figure 4-1, page 15).

HAZARD OF EQUIPMENT DAMAGE.

Use only the power meter display mounting screws included in the mounting hardware kit. Use of any other screws for display mounting voids the warranty and may damage the display.

Failure to observe this precaution can result in equipment damage.

CAUTION

Bulletin No. 3020IM9503R6/98 Power Meter December 1998 Chapter 4—Installation

3a. If a power meter will be attached to the display, insert display mounting

screws into only the top two holes; tighten until approximately 1/4" of each screw protrudes from the panel. See Directly Behind the Display, page 14, for remaining instructions. Begin with step 3.

b. If a power meter will not be attached directly to the display (behind the

panel door), insert one display mounting screw (included in hardware kit) through each of the four mounting holes. Tighten all screws to 6–9 lb-in (0.7–1.0 N•m).

On Panel Without Existing 1% Ammeter/Voltmeter Cutout

To mount the display on a panel without an existing cutout for an ammeter/voltmeter, follow these steps:

1. Turn off all power supplying the equipment before working on it. Follow all safety precautions.

2. Tape the template shipped with the display to the panel in the desired location; make sure the template is level. (Hole positions and dimensions are shown in figure 4-3, page 17.) Make sure no wires or equipment on the other side of the panel will be damaged, then drill through the panel at the 4 holes marked A on the template. Use a 3/16" drill bit.

Drill or punch a hole 2 to 4 inches (51–102 mm) in diameter through the

3. panel at the center of the template (center of hole is marked on the template).

4. Position the display against the front of the panel. From the other side of the panel, line up the mounting holes in the panel with the mounting holes in the display.

5a. If a power meter will be attached directly to the display, insert screws

into only the top two holes; tighten until approximately 1/4" of each screw protrudes from the panel. See Directly Behind the Display, page 14, for remaining instructions. Begin with step 3.

CAUTION

HAZARD OF EQUIPMENT DAMAGE.

Use only the power meter display mounting screws included in the mounting hardware kit. Use of any other screws for display mounting voids the warranty and may damage the display.

Failure to observe this precaution can result in equipment damage.

b. If a power meter will not be attached directly to the display (behind the

panel door), insert one display mounting screw (included in hardware kit) through each of the four mounting holes. Tighten all screws to 6–9 lb-in (0.7–1.0 N•m). Note: See CAUTION statement above.

Power Meter Bulletin No. 3020IM9503R6/98 Chapter 4—Installation December 1998

MOUNTING THE POWER METER

Power meter mounting options are described in this section.

DANGER

HAZARD OF ELECTRIC SHOCK, BURN, OR EXPLOSION.

Only qualified electrical workers should install and wire this equipment. Perform such work only after reading this complete set of instructions.

Failure to observe these precautions will result in death or severe personal injury!

CAUTION

HAZARD OF EQUIPMENT DAMAGE.

Failure to observe this precaution can result in equipment damage.

Directly Behind the Display

To mount the power meter directly behind the display, follow these steps:

1. Turn off all power supplying the equipment before working on it. Follow all safety precautions.

2. Mount the display. See Mounting the Display, page 12, for instructions.

3. Plug one end of the 1-foot communications cable provided with the display into the display communications port (terminal 23, figure 4-1) on the back of the display.

4. Hook the power meter mounting feet onto the top two display mounting screws protruding from the back of the door or panel. Route the cable to the right (hinged side) so it is not pinched between the power meter module and the panel (figure 4-1).

Bulletin No. 3020IM9503R6/98 Power Meter December 1998 Chapter 4—Installation

CAUTION

HAZARD OF EQUIPMENT DAMAGE.

Use only the power meter display mounting screws included in the mounting hardware kit. Use of any other screws for display mounting voids the warranty and may damage the display.

Failure to observe this precaution can result in equipment damage.

5. Using the screws in the display hardware kit, secure the power meter to the display through the bottom two mounting feet holes. Tighten all screws to 6–9 lb-in (0.7–1.0 N•m).

6. Plug the other end of the communications cable into the display communications port (terminal 22, figure 4-1) on the power meter.

Display

Panel

Display Communications

Port (Terminal 23)

Panel with Existing Cutout

Display Cable

SC-101

Display Communications

Port (Terminal 22)

Top View

After Mounting

Figure 4-1: Mounting power meter and display on panel with existing ammeter/voltmeter cutout

Power Meter Bulletin No. 3020IM9503R6/98 Chapter 4—Installation December 1998

Remote Mounting

To mount the power meter remotely (inside an enclosure), follow these steps:

DANGER

HAZARD OF ELECTRIC SHOCK, BURN, OR EXPLOSION.

Only qualified electrical workers should install and wire this equipment. Perform such work only after reading this complete set of instructions.

Failure to observe these precautions will result in death or severe personal injury!

CAUTION

HAZARD OF EQUIPMENT DAMAGE.

Failure to observe this precaution can result in equipment damage.

1. Turn off all power supplying the equipment before working on it. Follow all safety precautions.

2. Select a mounting location on the floor or wall of the enclosure, ensuring that there are adequate clearances, that the terminals are accessible, and that the location complies with local and state electrical codes.

3. Tape the template shipped with the module to the panel in the desired location (see figure 4-2, page 17); make sure the template is level. (Hole positions and dimensions are shown in figure 4-3, page 17.) Make sure no wires or equipment on the other side of the panel will be damaged, then drill through the panel at the 4 holes marked A on the template. Use a 3/16" drill bit.

4. Place the power meter mounting feet holes over the drilled holes and secure the power meter to the enclosure panel using No. 6 (maximum) screws or bolts suitable for the panel. Tighten to 6–9 lb-in (0.7–1.0 N•m).

Bulletin No. 3020IM9503R6/98 Power Meter December 1998 Chapter 4—Installation

Template

Panel

Figure 4-2: Mounting power meter on panel with no existing cutout

1.6875

2" to 4" Hole

51–102

3.375

1.6875

Dual Dimensions:

Inches

Millimeters

4 Holes

0.1875 (5 mm)

3.375

Note: The dimensions and positions of the 4 display holes shown above are identical for the power meter module.

Figure 4-3: Panel mount for the power meter display

Power Meter Bulletin No. 3020IM9503R6/98 Chapter 4—Installation December 1998

DIN Rail Mounting

To mount the power meter onto 35 mm DIN rail, follow these steps:

DANGER

HAZARD OF ELECTRIC SHOCK, BURN, OR EXPLOSION.

Only qualified electrical workers should install and wire this equipment. Perform such work only after reading this complete set of instructions.

Failure to observe these precautions will result in death or severe personal injury!

1. Turn off all power supplying the equipment before working on it. Follow all safety precautions.

2. Mount a piece of 35 mm DIN rail in the desired location. Note: The DIN rail must be horizontal. Position the power meter in front of and slightly above the DIN rail (figure 4-4).

CAUTION

HAZARD OF EQUIPMENT DAMAGE.

Failure to observe this precaution can result in equipment damage.

3. Slip the two DIN rail hooks, located on the power meter case, onto the upper edge of the rail.

4. Rotate the power meter down and press it against the 35 mm DIN rail until the power meter snaps into place.

Bulletin No. 3020IM9503R6/98 Power Meter December 1998 Chapter 4—Installation

DIN Rail Hooks DIN Rail Clip

Side View

After Installation

DIN Rail

Figure 4-4: Mounting power meter on 35 mm DIN rail

Power Meter Bulletin No. 3020IM9503R6/98 Chapter 4—Installation December 1998

Bulletin No. 3020IM9503R6/98 Power Meter December 1998 Chapter 5—Wiring

CHAPTER 5—WIRING

DANGER

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. Follow proper safety procedures regarding CT secondary wiring. Never open circuit the secondary of a CT.

Failure to observe this precaution will result in death or severe personal injury!

WIRING CTs, PTs, AND CONTROL POWER

CAUTION

HAZARD OF EQUIPMENT DAMAGE.

External fusing (customer-supplied) is

required

for control power inputs.

Failure to observe this precaution can result in equipment damage.

The power meter supports a variety of 3-phase power system wiring connections, including 3-wire delta, and 4-wire wye. Table 5-1 lists some of the most widely used system connections. Additional system connections are shown in Appendix D.

Table 5-1

System Connection Types

System Type Sys ID # CTs # PTs➀PT Conn. Currents Voltages Figure #

3Ø, 3W Delta 30 2 0 or 2 Open Delta A, B➁, C A-B, C-B, C-A Calculated B 5-4

3∅, 3W Delta 31 3 0 or 2 Open Delta A, B, C A-B, C-B, C-A Metered B Phase

➂

3∅, 4W Wye 40 3 0 or 3 Wye-Wye A, B, C, N

A-N, B-N, C-N 5-6, A-B➃, B-C➃, C-A

➁

5-3,

5-5

➃

5-7

➀ PTs not required at 600 volts (line-to-line) or below. ➁ Calculated. ➂ Calculated, PM-620 and PM-650. ➃ Line-to-line voltage in the 4-wire mode is calculated and fundamental only.

Power Meter Bulletin No. 3020IM9503R6/98 Chapter 5—Wiring December 1998

Control Power Transformer (CPT) Sizing

If you are using control power transformers (CPTs), refer to table 5-2 below. It shows CPT sizing for various quantities of power meter modules.

Table 5-2

Control Power Transformer Sizing

Number of Size of

Power Meter Modules CPT

1–10 100 VA 11–20 150 VA 21–30 200 VA

31–40 250 VA

Control Power Fuses

The control power input(s) of each power meter module must be individually fused under all circumstances. When using a control power transformer where the secondary is 120 Vac, or when deriving control power from metering potential transformers, use a standard 250 V, 100 mA, fast-acting fuse. If control power is derived directly from the line voltage (600 V or less), each power meter module control input must be fused using a 1/2 amp Bussman FNQ-R fuse (or equivalent).

Metering Potential Transformers (PTs)

No potential transformers are required on the voltage metering inputs for wye-connected and ungrounded delta circuits with line-to-line voltages of 600 V or less; connect the voltage metering inputs directly to the line voltages. However, for power systems with voltages higher than 600 V line-to-line, or corner-grounded delta circuits, potential transformers must be used. To set up the appropriate voltage range, see page 50.

CE Compliance

To comply with CE Electromagnetic Compatibility Requirements, the power meter must be installed in a metallic enclosure, i.e., switchgear. Install the clamp-on ferrite provided in the hardware kit around all three control power input leads close to the power meter (figure 5-1). To open the clamp-on ferrite prior to installation, follow the instructions in figure 5-2.

For CE compliance, a Merlin Gerin Disconnect Breaker Type P25M #21104 or IEC 947 equivalent must be connected directly to the metering voltage and control power inputs (figure 5-1). Note: The disconnect switch must be placed

within reach of the power meter and labeled “Disconnect Switch for Power Meter.”

Bulletin No. 3020IM9503R6/98 Power Meter December 1998 Chapter 5—Wiring

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 (

not

jumpered from metering voltage as shown), 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.)

Metering Voltage Source

Disconnect Breaker

Clamp-On

Ferrite

KYZ

Voltage Control

Power

Current

Display Comms Port

Comms

Note: See figures 5-3 through 5-8 for possible system connections.

Figure 5-1: Clamp-on ferrite and disconnect breaker for CE compliance (4-wire system shown)

To open the clamp-on ferrite prior to installation, follow these steps:

1. Using a small screwdriver or similar device, gently pry open the ferrite case at location ➀ above.

2. Flip open the top of the ferrite case in the direction shown (➁).

3. After routing control leads through the middle of the ferrite, snap the ferrite case closed; make sure you do not crimp the control wires when closing the ferrite case.

Figure 5-2: Opening the clamp-on ferrite

Power Meter Bulletin No. 3020IM9503R6/98 Chapter 5—Wiring December 1998

AØ BØ

Line

CØ

VDS

Fuses

Top

Voltage

Load

KYZ

Control Power

Comms

Current

Display Communications Port

Note: Control power can be drawn from fused voltage inputs L-L or an external source. See page 22 for CPT and fuse recommendations.

Control power range: L1-L2 90–600 Vrms

90–300 Vdc Installation Category II For ungrounded delta systems only.

Figure 5-3: 3-phase, 3-wire delta direct voltage connection with 2 CTs

Bulletin No. 3020IM9503R6/98 Power Meter December 1998 Chapter 5—Wiring

AØ

Line

BØ

CØ

Load

CDS

Fuse

VDS

Fuses

CPT (120 or 240 Vac Secondary,10 VA)

Comms

Fuses

Voltage

Control Power

Current

Open Delta PT Connection (120 V Secondaries)

Top

KYZ

Display Communications Port

Note: Control power can be drawn from fused voltage inputs L-L or an external source. See page 22 for CPT and fuse recommendations.

Control power range: L1-L2 90–600 Vrms

Installation Category II

Figure 5-4: 3-phase, 3-wire delta with 2 PTs and 2 CTs

90–300 Vdc

Power Meter Bulletin No. 3020IM9503R6/98 Chapter 5—Wiring December 1998

AØ BØ

Line

CØ

Load

CDS

Fuse

VDS

Fuses

CPT (120 or 240 Vac Secondary, 10 VA)

Comms

Fuses

Voltage Control

Power

Current

Open Delta PT Connection (120 V L-N Secondaries)Fuses

Top

KYZ

Display Communications Port

Note: Control power can be drawn from fused voltage inputs L-L or an external source. See page 22 for CPT and fuse recommendations.

Control power range: L1-L2 90–600 Vrms

Installation Category II

Figure 5-5: 3-phase, 3-wire delta with 2 PTs and 3 CTs

90–300 Vdc

Bulletin No. 3020IM9503R6/98 Power Meter December 1998 Chapter 5—Wiring

AØ

Line

BØ

CØ

Load

VDS

Fuses

Top

KYZ

Voltage Control

Power

Comms

Current

Display Communications Port

Note: Control power can be drawn from fused voltage inputs L-L, or L-N, or an external source. See page 22 for CPT and fuse recommendations.

Control power range: L1-L2 90–600 Vrms

Installation Category II

Figure 5-6: 3-phase, 4-wire wye, ground and direct voltage connection, with 3 CTs

90–300 Vdc

Power Meter Bulletin No. 3020IM9503R6/98 Chapter 5—Wiring December 1998

AØ BØ

Line

CØ

Load

CDS

Fuse

VDS

Fuses

CPT (120 or 240 Vac Secondary , 10 VA)

Comms

Fuses

Top

Voltage

Control Power

Current

Wye PT Connection (120 V L-N Secondaries)

KYZ

Display Communications Port

Note: Control power can be drawn from fused voltage inputs L-L, or L-N, or an external source. See page 22 for CPT and fuse recommendations.

Control power range: L1-L2 90–600 Vrms

Installation Category II

Figure 5-7: 3-phase, 4-wire wye, ground connection, with 3 PTs and 3 CTs

90–300 Vdc

Bulletin No. 3020IM9503R6/98 Power Meter December 1998 Chapter 5—Wiring

Top

KYZ

Voltage

DC Control Power 125/250 Vdc Nominal

Control Power

Comms

Current

Display Communications Port

Note: Control power can be drawn from fused voltage inputs L-L, or L-N, or an external source. See page 22 for CPT and fuse recommendations.

Control power range: L1-L2 90–600 Vrms

90–300 Vdc

Installation Category II

Figure 5-8: DC control power wiring

Power Meter Bulletin No. 3020IM9503R6/98 Chapter 5—Wiring December 1998

Typical power meter module wire routing is shown in figure 5-9 below.

➀

➂

➁

➀ 3-Phase Voltage Inputs ➁ Control Power Terminals ➂ KYZ Output ➃ 3-Phase Current Inputs ➄ Communications Connection

to Display

➅ RS-485 Communications Terminals

Figure 5-9: Power meter wire routing

HAZARD OF ELECTRICAL SHOCK, BURN, OR EXPLOSION.

• Before removing the terminal shield or making connections, turn off all power supplying this equipment.

• Refer to the terminal identifications label on the terminal shield for proper wiring polarities.

➅

➃

DANGER

➃

➄

• Refer to page 22 for CPT and fuse recommendations.

• Snap terminal shield into closed position before turning power on.

Failure to observe these precautions will result in death or severe personal injury!

To wire the power meter, follow these steps:

1. Strip 0.25" (6 mm) of insulation from the end of all wires. Using a suitable crimping tool, attach the spade connectors (in hardware kit) to the voltage and current input wires (up to 12 AWG) as shown in figure 5-9.

Bulletin No. 3020IM9503R6/98 Power Meter December 1998 Chapter 5—Wiring

2. Connect the spade connectors to the 3-phase voltage input terminals

(➀, figure 5-9) and the 3-phase current input terminals (➃, figure 5-9). Tighten the terminal block screws to 9 lb-in (1.0 N•m).

3. Insert 14 AWG control power wires into the control power terminal block as shown in figure 5-9. Derive control power from one of these sources:

– a stable ac source – phase voltage inputs – dc power source

Tighten terminal screws to 4 lb-in (0.45 N•m).

4. Ground the power meter. See Grounding the Power Meter in this chapter for instructions.

5. If all wiring is complete, snap the terminal shield into the closed position.

CAUTION

HAZARD OF EQUIPMENT DAMAGE.

External fusing is required when bringing line voltages to the power meter or other metering device.

Failure to observe this precaution can result in equipment damage.

Deriving Control Power from Phase Voltage Inputs

Whenever possible, derive power meter control power from a stable voltage source. If such a source is unavailable, the power meter can derive control power from the metered circuit up to 600 V, or from its phase PT inputs. Due to the wide range of permissible control power inputs, the power meter can accept either L-N or L-L control power inputs up to 600 V.

DANGER

HAZARD OF ELECTRICAL SHOCK, BURN, OR EXPLOSION.

• Turn off all power supplying this equipment before opening the terminal shield or making connections.

• Snap terminal shield into closed position before turning power on.

Failure to observe these precautions will result in death or severe personal injury!

Power Meter Bulletin No. 3020IM9503R6/98 Chapter 5—Wiring December 1998

Note: Before wiring, see fuse recommendations on page 22.

Follow these steps to derive control power from phase PT inputs:

1. Connect the Va terminal (terminal 9) to the L1 terminal (terminal 6).

2. For L-N control power (see figure 5-6, page 27), connect the Vn terminal (terminal 12) to the L2 terminal (terminal 7). For L-L control power (see figure 5-3, page 24), connect the Vb terminal (terminal 10) to the L2 terminal (terminal 7).

3. If all wiring is complete, snap the terminal shield into the closed position.

GROUNDING THE POWER METER

For optimal grounding, connect the power meter to a true earth ground.

To ground the power meter, follow these steps:

1. Connect the ground terminal (terminal 8) to a true earth ground, using #14 AWG wire.

2. After grounding, snap the terminal shield into the closed position.

Note: The power meter must be grounded as described in these instructions. Failure to properly ground the power meter may induce noise on the power conductor.

Bulletin No. 3020IM9503R6/98 Power Meter December 1998 Chapter 5—Wiring

SOLID-STATE KYZ PULSE OUTPUT

DANGER

HAZARD OF ELECTRICAL SHOCK, BURN, OR EXPLOSION.

• Turn off all power supplying this equipment before opening the terminal shield or making connections.

• Snap terminal shield into closed position before turning power on.

Failure to observe these precautions will result in death or severe personal injury!

The KYZ output can be wired to a 2-wire or 3-wire pulse receiver. To wire to a 2-wire pulse receiver, use the K and Y terminals only (figure 5-10). When wiring the KYZ pulse output, use 14 to 18 AWG wire. Strip 0.25" (6 mm) of insulation from the end of each wire being connected to the KYZ connector. Insert the wires into the KYZ output terminal block. Tighten the terminal block screws to 5–7 lb-in (0.56–0.79 N•m).

Note: Set up the KYZ by using either the Setup mode on the power meter display or the setup screen in SMS-3000, SMS-1500, or PMX-1500 software. See page 65 for instructions for determining the pulse constant.

K Y

2-Wire Pulse

Receiver

3-Wire Pulse

Receiver

Figure 5-10: KYZ pulse output

Power Meter Bulletin No. 3020IM9503R6/98 Chapter 5—Wiring December 1998

For the PM-650 only, the KYZ output can also be wired as an alarm contact (figure 5-11). When wiring the KYZ output, use 14 to 18 AWG wire. Strip 0.25" (6 mm) of insulation from the end of each wire being connected to the KYZ connector. Insert the wires into the KYZ output terminal block. Tighten the terminal block screws to 5–7 lb-in (0.56–0.79 N•m).

120 Vac

10 A Fuse

Load

Figure 5-11: Typical KYZ output connection for use as an alarm contact

Bulletin No. 3020IM9503R6/98 Power Meter December 1998 Chapter 6—Communications

CHAPTER 6—COMMUNICATIONS

PROTOCOLS

POWERLOGIC Power Meters can communicate using three different protocols:

• POWERLOGIC

• Modbus

• Jbus During setup, select which protocol will be used. Descriptions of the connections that can be used with each protocol follow.

Note: For 2-wire Modbus and Jbus information, see Appendix H—2-Wire Modbus and Jbus.

POWERLOGIC PROTOCOL COMMUNICATIONS WIRING

POWERLOGIC devices are equipped with RS-485 communications. You can daisychain up to 32 POWERLOGIC (or Power Monitoring and Control System [PM&CS]) compatible devices to a single communications port. This document refers to a chain of PM&CS devices connected by communications cable as a communications link.

A PM&CS communications link can consist of up to 32 PM&CS-compatible devices connected to a communications port on one of the following:

• Personal computer

• POWERLOGIC Network Interface Module (PNIM)

• SY/MAX programmable controller

• POWERLOGIC Ethernet Gateway

• Other host devices with a POWERLOGIC-compatible port

Figures 6-1 through 6-3 show power meters (other PM&CS-compatible devices can be substituted) connected in typical systems. The accompanying text describes important considerations for each connection alternative.

The figures also show the placement of communications adapters and terminators. For additional information on using the communications adapter and terminator, see Terminating the Communications Link, and Biasing the Communications Link in this chapter.

Power Meter Bulletin No. 3020IM9503R6/98 Chapter 6—Communications December 1998

Connecting to a Personal Computer via POWERLOGIC Communications

• Connect up to 32 PM&CS devices to a personal computer (figure 6-1). See Length of the Communications Link in this chapter for distance limitations at varying baud rates.

• PM&CS devices can be connected to a SY/LINK card installed in the personal computer. To do this, connect the PM&CS devices to the RS-422 port (female DB-9 connector) of the SY/LINK card.

• PM&CS devices can be connected to a serial communications port on the personal computer. To do this, the PM&CS devices must be connected to an RS-232-to-RS-422/RS-485 converter, which is connected to the personal computer. POWERLOGIC offers a converter kit for this purpose (Class 3090 Type MCI-101; refer to the instruction bulletin included with the MCI-101 for connection instructions).

Remote PC

MCTAS-485

(or MCT-485

with Terminal

Block)

1–32 Devices (Power Meters and Other Power

Monitoring & Control System Compatible Devices)

Belden 8723

(or equivalent)

Figure 6-1: Power meters connected to a personal computer via SY/LINK card

Connected to

RS-422 Port

of SY/LINK Card

MCA-485

CAB-107

Bulletin No. 3020IM9503R6/98 Power Meter December 1998 Chapter 6—Communications

Connecting to a POWERLOGIC Network Interface Module (PNIM) Using POWERLOGIC Communications

• Connect up to 32 PM&CS devices to a PNIM. See Length of the Communications Link in this chapter for distance limitations at different baud rates.

• Connect PM&CS devices to PNIM port 0 (top RS-485 port) only.

• Configure PNIM port 0 for “POWERLOGIC” mode (see side of PNIM for instructions on setting dip switches).

• Configure the baud rate of PNIM port 0 to match the baud rate of the PM&CS devices on the communications link.

• Refer to the PNIM instruction bulletin for detailed instructions on configuring the PNIM.

PNIM

SY/MAX

CLASS 8030 TYPE CRM-565

NETWORK

R x Ø

T x Ø

R x 1

T x 1

NET RxERROR

NET TxERROR

POWER

NETWORK

INTERFACE NUMBER

——

NETWORK INTERFACE NUMBER

Ø1 —

C O M M

1——

C O M M

SY/NET

NETWORK INTERFACE

SY/NET

PC with SY/LINK Card

MCTAS-485

(or MCT-485

with Terminal

Block)

Belden 8723

(or equivalent)

Only Connect

Power Meters

to Top Port (Port 0)

of PNIM

MCA-485

CAB-107

(Belden 9463 or equivalent)

1–32 Devices (Power Meters and Other Power

Monitoring & Control System Compatible Devices)

Figure 6-2: Power meters connected to a PNIM

Power Meter Bulletin No. 3020IM9503R6/98 Chapter 6—Communications December 1998

Connecting to a SY/MAX Programmable Controller Using POWERLOGIC Communications

• Connect up to 32 PM&CS devices to a programmable controller. See Length of the Communications Link in this chapter for distance limitations at different baud rates.

• Connect PM&CS devices to the RS-422 port of the programmable controller.

• The programmable controller must contain a program to access POWERLOGIC device data.

• Configure the baud rate of the programmable controller’s port to match the baud rate of the POWERLOGIC devices on the communications link.

• Refer to the programmable controller instruction manual for detailed instructions on configuring the programmable controller.

Note: PM&CS devices can be connected to other manufacturers’ systems using available communication interfaces. For further information, contact the POWERLOGIC Technical Support Center.

MCTAS-485 (or MCT-485

with Terminal

Block)

1–32 Devices (Power Meters and Other Power

Monitoring & Control System Compatible Devices)

Belden 8723

(or equivalent)

Connect Power Meters

to RS-422 Port of

Programmable

Controller

MCA-485

CAB-107

Programmable

Controller

SY/MAX

400

MODEL

PROCESSOR

RUN HALT MEMORY FORCE I/O BATTERY

LOW WRITE PROTECT

BATTERY INSTALLED

DATE

RUN

PROGRAM

RUN

HALT

DISABLE

OUTPUTS

PRGMR CHNL 1

COMM CHNL 2

Figure 6-3: Power meters connected to a SY/MAX programmable controller

Bulletin No. 3020IM9503R6/98 Power Meter December 1998 Chapter 6—Communications

MODBUS RTU PROTOCOL

Alternately, power meters can communicate using the Modbus RTU protocol. Using 4-wire Modbus, you can daisychain up to 32 power meters to a single communications port. When using 2-wire Modbus communications, a maximum of 16 power meters can be daisychained to a single communication port.

Note: See Appendix H for 2-wire Modbus wiring and distance limits.

A power meter Modbus communications link can be connected to a communications port on any of the following:

• personal computer

• Modicon programmable controller

• other host devices with a Modbus-compatible port

JBUS PROTOCOL

Jbus is the third protocol by which power meters can communicate. When using 4-wire Jbus, up to 32 power meters can be daisychained from a single communications port. For 2-wire Jbus, a maximum of 16 power meters can be daisychained.

Note: See Appendix H for 2-wire Jbus wiring and distance limits.

You can connect a power meter Jbus communications link to any host device with a Jbus-compatible port.

Power Meter Bulletin No. 3020IM9503R6/98 Chapter 6—Communications December 1998

CONNECTING TO A PC USING MODBUS OR JBUS COMMUNICATIONS

• Connect up to 32 Modbus or Jbus devices to a personal computer (figure 6-4). See Length of the Communications Link in this chapter for distance limitations at varying baud rates.

• Power meters configured for Modbus or Jbus can be connected to a serial communications port on the personal computer. To do this, the power meters must be connected to an RS-232-to-RS-422/RS-485 converter, which is connected to the personal computer. POWERLOGIC offers a converter kit for this purpose (Class 3090 Type MCI-101; refer to the instruction bulletin included with the MCI-101 for connection instructions).

MCTAS-485

(or MCT-485

with

Terminal

Block)

Belden 8723

(or equivalent)

MCA-485

RS-232/

RS-485

Converter

1–32 Devices (Power Meters and

Other Modbus- or Jbus-Compatible Devices)

Figure 6-4: Power meters connected to a personal computer via serial port

CAB-108

CAB-104

Modbus Host

Bulletin No. 3020IM9503R6/98 Power Meter December 1998 Chapter 6—Communications

LENGTH OF THE COMMUNICATIONS LINK (POWERLOGIC, MODBUS, OR JBUS)

The length of the communications link cannot exceed 10,000 feet (3,048 m). This means that the total length of the communications cable from the PNIM, personal computer, or PLC, to the last device in the daisychain, cannot exceed 10,000 feet. The maximum distance may be shorter, depending on the baud rate. Table 6-1 shows the maximum distances at different baud rates.

Table 6-1

Maximum Distances of Comms Link at Different Baud Rates

Baud

Rate

1200 10,000 ft. (3,048 m) 10,000 ft. (3,048 m) 2400 10,000 ft. (3,048 m) 5,000 ft. (1,524 m) 4800 10,000 ft. (3,048 m) 5,000 ft. (1,524 m) 9600 10,000 ft. (3,048 m) 4,000 ft. (1,219 m)

19200 5,080 ft. (1,548 m) 2,500 ft. (762 m)

1–16 devices 17–32 devices

Maximum Distances

Note: See Appendix H for 2-wire Modbus and Jbus wiring distance limits.

DAISYCHAINING PM&CS DEVICES (POWERLOGIC, MODBUS, OR JBUS)

Note: To daisychain the power meter with other PM&CS, Modbus, or Jbus devices, use a communications cable containing two twisted-shielded pairs (Belden 8723 or equivalent). Strip back the cable sheath 2" (51 mm) on each end of the cable, and strip back the insulation 0.25" (6 mm) from the end of each wire. Then follow daisychaining instructions in this section. Torque terminal block screws to 5–7 lb-in (0.56–0.79 N•m).

Each communicating power meter has a 5-position plug-in RS-485 terminal block for connection to a PM&CS, Modbus, or Jbus communications link. On all PM&CS devices, the terminals are labeled IN+, IN-, OUT+, OUT-, and SHLD. On the power meter, the IN+, IN-, OUT+, OUT-, and SHLD terminals are numbered 5, 4, 3, 2, and 1, respectively.

To daisychain a power meter to another PM&CS, Modbus, or Jbus device, wire the power meter’s RS-485 communications terminals to the matching communications terminals of the next device (wire the IN+ terminal of the power meter to the IN+ terminal of the next device, wire IN- to IN-, OUT+ to OUT+, OUT- to OUT-, and SHLD to SHLD). See figure 6-5.

If the power meter is the last device on the daisychain, use a terminator at the end of the link. See Terminating the Communications Link in this chapter for instructions. If the power meter is the first device on the daisychain, connect it to the PNIM, personal computer, or programmable controller using a CAB-107 or equivalent cable and a Multipoint Communications Adapter. See Biasing the Communications Link in this chapter for instructions. See Appendix C for the CAB-107 pinout.

Power Meter Bulletin No. 3020IM9503R6/98

tible Devi

Chapter 6—Communications December 1998

To RS-485

Terminals of

Next Device

Power Meter

or Other PM&CS-

Compatible, Modbus,

or Jbus Device

IN+

IN-

IN–

OUT+

OUT-

OUT–

SHLD

Power Meter

or Other PM&CS-

Compatible, Modbus,

compa

or Jbus Device

ce compa

IN+

IN-

IN–

OUT+

OUT-

OUT–

SHLD

Power Meter

or Other PM&CS-

Compatible, Modbus,

or Jbus Device

cecompa

IN+

IN-

IN–

OUT+

OUT-

OUT–

SHLD

To RS-485

Terminals of

Next Device

Belden 8723 (or equivalent) Comms Wire

(two twisted pairs with shield)

Figure 6-5: Daisychaining the RS-485 communications terminals

BIASING THE COMMUNICATIONS LINK (POWERLOGIC, MODBUS, OR JBUS)

For proper RS-485 communications performance, the communications link must be biased (figure 6-6) using a POWERLOGIC Multipoint Communications Adapter (Class 3090 Type MCA-485). The adapter is placed between the first device on the link and the communications port of a PNIM, SY/LINK card, or other host device.

Power Meter

Belden 8723

IN+

➄

IN–

➃

OUT+

➂

OUT–

➁

SHLD

➀

Green White Red Blue Shield

IN+

IN–

OUT+

OUT–

SHLD

20 21 22 23 24

CAB-107

MCA-485

RS-485

Terminals

5-Position

Terminal Block

Figure 6-6: Connecting the power meter as the first

device on a PM&CS or Modbus communications link

To bias the communications link, refer to figure 6-6 and follow these steps:

1. Install the 5-position terminal block in a convenient location.

Note: The CAB-107 cable is 10 feet (3 m) long. If the terminal block must be located farther than 10 feet from the host device, build a custom cable using Belden 8723 cable and a male DB-9 connector. See the CAB-107 pinout, page 74.

2. Plug the male end of the Multipoint Communications Adapter (MCA-485) into the communications port of the PNIM, SY/LINK board, or other host device.

To Comm Port of Host Device

Note: When connecting to a PNIM, connect the power meter to the top RS-422 port, labeled port 0. This port must be configured for POWERLOGIC mode.

Bulletin No. 3020IM9503R6/98 Power Meter December 1998 Chapter 6—Communications

3. Carefully mark the flying leads on the CAB-107 as indicated in table 6-2 below. For example, mark the green wire, labeled 20, as “IN+”; mark the white wire, labeled 21, as “IN–”; and so on.

Table 6-2

Labeling the CAB-107 Leads

Existing Label Wire Color Mark As

20 Green IN+ 21 White IN– 22 Red OUT+ 23 Black OUT– 24 Silver SHLD

4. Attach the male DB-9 connector on the CAB-107 to the multipoint communications adapter.

5. Connect the CAB-107 spade connectors to the 5-position terminal block. See figure 6-8, page 45, for terminal identification.

6. Cut a length of Belden 8723 (or equivalent) cable that is long enough to reach from the terminal block to the first power meter. Strip back the cable sheath 1-1/4" (32 mm) from both ends.

7. On one end of the Belden 8723 (or equivalent) cable, carefully strip .25" (6 mm) of insulation from the end of each wire to be connected. Using a suitable crimping tool, securely attach a forked terminal (spade connector) to each wire.

8. Connect the cable end with attached spade connectors to the terminal block. See figure 6-8, page 45, for terminal identification. Tighten all terminal screws to 6–9 lb-in (0.68–1 N•m).

9. On the other cable end, carefully strip .4"–.45" (10–11 mm) of insulation from the end of each wire to be connected.

10. Connect this end of the Belden 8723 (or equivalent) cable to the power meter RS-485 terminals; see figure 6-8, page 45, for communications terminal identification.

Be sure to connect the terminal accepting the IN– wire on the CAB-107 to the IN– terminal on the power meter, the terminal accepting the IN+ wire on the CAB-107 to the IN+ terminal on the power meter,

and so on. Tighten the RS-485 terminal screws to 5–7 lb-in

(0.56–0.79 N•m).

Note: An alternative to using a terminal block and a CAB-107 is to build a custom cable using Belden 8723 cable (or equivalent) and a male DB-9 connector. When building a cable, follow the CAB-107 pinout shown in Appendix C.

Power Meter Bulletin No. 3020IM9503R6/98 Chapter 6—Communications December 1998

Terminating the Communications Link (POWERLOGIC, Modbus, or Jbus)

For proper RS-485 communications performance, terminate the last device on a PM&CS or Modbus communications link. To terminate the last device, use a POWERLOGIC Multipoint Communications Terminator.

Terminate the power meter using one of the following methods:

• MCTAS-485. This terminator plugs directly into the power meter communications port (RS-485 terminals in figure 6-7 below).

• Terminal block and MCT-485. In this method, communications wires route from the last power meter on a daisychain to a 5-position terminal block. A terminator attaches to the terminal block. See figure 6-8.

Figures 6-1 to 6-4 show the terminator applied in typical systems.

Power Meter

(If Last Device in Daisychain)

MCTAS-485

In+

In– Out+ Out–

Shield

RS-485

Terminals

To Next Device on Daisychain

Belden 8723

Figure 6-7: Terminating power meter with MCTAS-485

Bulletin No. 3020IM9503R6/98 Power Meter December 1998 Chapter 6—Communications

Terminal Block

Power Meter

(If Last Device in Daisychain)

In+ In– Out+ Out– Shield

MCT-485

In+

RS-485

Terminals

In– Out+ Out–

Shield

Belden 8723

To Next Device on Daisychain

Figure 6-8: Terminating power meter with terminal block and MCT-485

Power Meter Bulletin No. 3020IM9503R6/98 Chapter 6—Communications December 1998

Bulletin No. 3020IM9503R6/98 Power Meter December 1998 Chapter 7—Display Operation

CHAPTER 7—DISPLAY OPERATION

INTRODUCTION

This chapter tells how to set up the power meter from the display only. You can also set up the power meter using POWERLOGIC SMS-3000, SMS-1500, or PMX-1500 software. Refer to the software instruction bulletin(s) for specific instructions.

MODES

The power meter has the following modes. Each mode is detailed in this section.

• Summary

• Power

• Energy

• Demand

• Power Quality

• Min/Max

• Alarm Setup

• Alarm Log

➀

➁

• Setup

• Resets

• Diagnostics

➀ PM-620 and PM-650. ➁ PM-650 only.

Power Meter Bulletin No. 3020IM9503R6/98 Chapter 7—Display Operation December 1998

Accessing a Mode

To access a mode, refer to figure 7-1 while following these steps:

1. Press the Mode button until the desired mode appears (➀, figure 7-1).

2. Press Select to enter the desired mode.

3. For Setup, Resets, Diagnostics, Alarm Log**, or Alarm Setup** modes,

press the Select button to select a field (➁), and move through screens in that mode.

For Summary, Power, Energy, Demand*, Power Quality* (PQ), and Min/Max** modes, press Select to enter a display mode, then use the arrow buttons to move through the display screens (➂).

➡

➀

➡

Setup

Resets

Diagnostics

Summary

Power

Energy

Demand

Power Quality*

Min/Max**

Alarm Setup**

Alarm Log**

➁

▼

➁

▼

➁

▼

➂

▼

Figure 7-1: Navigating power meter parameters

➂

▼

➂

▼

➂ ➂

▼

➂

▼

➁

▼

➁

* PM-620 and PM-650. ** PM-650 only.

Bulletin No. 3020IM9503R6/98 Power Meter December 1998 Chapter 7—Display Operation

Setup Mode

The Setup mode lets you configure the following parameters:

• Protocol

• Device Address

• Baud Rate

• Parity (even or none)

• CT Primary

• CT Secondary

• Voltage Range

• PT Primary

• PT Secondary

• System Type

• Frequency

• Power Demand Interval

➀

• KYZ Mode

• Pulse Constant

• THD/thd

➁

➀

You can also set the date➀, time➀, master password, and reset password.

➀ PM-620 and PM-650. ➁ The pulse constant parameter is displayed only when the KYZ mode is enabled (KWH, KVAH, or KVARH

energy mode).

Power Meter Bulletin No. 3020IM9503R6/98 Chapter 7—Display Operation December 1998

Note: Because the power meter can directly meter up to 600 V line-to-line without using potential transformers, you must specify the appropriate voltage range during the setup procedure. To determine what voltage range to enter during setup, find your system voltage in table 7-1 below. Enter the corresponding voltage range.

If your specific system voltage is not listed, use the next highest voltage range. If your system voltage is greater than 600 V

or 347 V

L-L

, then you must use PTs and

L-N

select 208/120 V as the voltage range.

Table 7-1

Selecting Voltage Ranges for System Types

System Voltage

4-wire:

208/120 V 208/120 V

480/ 277 V 480/277 V

600/347 V 600/347 V

>600/347 V 208/120 V with PTs ➀

3-wire (Delta)➁:

➀ Note: Set PT ratios. ➁ For 3Ø, 3-wire delta corner-grounded applications, install two line-to-line rated PTs. Set the

voltage range to 208/120 V with PTs.

Resets Mode

The Resets mode allows you to reset energy, demand values

➃

Set Power Meter

Voltage Range To:

240 V 480/277 V 480 V 480/277 V 600 V 600/347 V

>600 V 208/120 V with PTs ➀

➂

, and min/max

. See Performing Resets, page 54, for more information.

Diagnostics Mode

The Diagnostics mode displays the model number and serial number of your power meter, as well as firmware versions and a read-only register interface. For more information, see Viewing Diagnostic Information, page 55.

Display Modes

The display modes—Summary, Power, Energy, Demand and Min/Max

➂ PM-620 and PM-650. ➃ PM-650 only.

➃

—each display information indicated by their titles.

➂

, Power Quality➂,

Bulletin No. 3020IM9503R6/98 Power Meter December 1998 Chapter 7—Display Operation

How the Buttons Work

The buttons on the power meter display (figure 7-2) function differently in Setup, Resets, Diagnostics, Alarm Log➀, and Alarm Setup➀ than they do in the display modes.

Mode

Button

This button lets you scroll through available modes. You can also use this button to exit a mode after making all desired changes. For example, after making all desired changes in Setup mode, press the Mode button. The power meter then prompts you to accept or reject your changes.

Arrow Buttons

Use these buttons to increase or decrease the displayed parameter. Also, use these buttons to toggle between Yes and No when required.

Select

Button

This button allows you to enter a selected mode and scroll through fields within that mode. Also use this button as an “Enter” key to accept a new configuration value and move to the next field.

Mode

Figure 7-2: Power meter display buttons

Select

Contrast Button

This button allows you to adjust the contrast of the display screen.

➀ PM-650 only.

Power Meter Bulletin No. 3020IM9503R6/98 Chapter 7—Display Operation December 1998

SETTING UP THE POWER METER

To set up the power meter, follow these steps:

1. Press the Mode button until “Mode: Setup” is displayed on the screen.

2. Press the Select button. At the “Enter Password“ prompt, press the up arrow button once to enter the default password 0 (if you have set up a different password, use that instead).

3. Press Select until the desired setup parameter is displayed. Change the value using the up and down arrow buttons.

Repeat step 3 until all desired changes are made. Table 7-2 below shows setup parameters, the factory default for each, and the allowable range of values.

5. After making all desired changes, press the Mode button. The display reads “Save Changes? NO.”

6. To reject changes, press the Select button once.

7. To accept changes, press an arrow button to change from “NO” to “YES.” Then press the Select button.

8. The power meter accepts the setup changes and restarts.

Table 7-2

Factory Defaults for Power Meter Setup Parameters

Parameter Allowed Values Default

Protocol POWERLOGIC, POWERLOGIC

Modbus, or JBus Network Address 0 to 199 1 Baud Rate 1200–19200 9600 Parity even, none even CT Primary (3-Phase) 1 to 32,767 5 CT Secondary 1, 5 5 Voltage Range ➀ 208/120 V, 208/120 V

480/277 V,

600/347 V

PT Primary

3-Phase 1 to 1,700,000 120 PT Secondary 100, 110, 115, 120 120 System Type 40, 4-wire; 40, 4-wire

31, 3-wire (3 CT);

30, 3-wire (2 CT) Frequency (Nominal) 50, 60 Hz 60 Hz Demand Interval (Power) ➁ 1 to 60 min. 15 KYZ Mode kWH, kWH

KYZ Disabled ➂,

kVAH,

kVARH

Alarm Mode ➃

Pulse Constant

(WH/Pulse Output [KVARH, KVAH]) 0 to 327.67 kWH 0

THD ➁ THD (United States) THD (United States)

thd (European)

Password (Master and Reset) 0 to 9998 0

➀ See note on voltage range selection, page 50. ➁ PM-620 and PM-650. ➂ PM-600 and PM-620. ➃ PM-650 only.

Bulletin No. 3020IM9503R6/98 Power Meter December 1998 Chapter 7—Display Operation

Start

Press the

button until “Setup”

is displayed.

Select

choose Setup.

Use the arrow

buttons to display the

password. Then press

the

Press the

to move to the parameter

to be changed.

Use the arrow

buttons to change

Mode

Press the

button to

Select

button.

Select

the value.

button

Do you want

to change

another

parameter?

Press the

button once.

Do you want

the changes?

Mode

to accept

YES

Press

arrow ▲ button.

Press the

Select

button.

Power Meter accepts

changes and restarts.

YES

Press the

Select

button.

Display returns

to mode list.

Figure 7-3: Power meter setup flowchart

Power Meter Bulletin No. 3020IM9503R6/98 Chapter 7—Display Operation December 1998

PERFORMING RESETS

➀

To reset energy, demand

, and min/max➁ values using the display, follow

these steps:

1. Press the Mode button until “Resets” is displayed.

2. Press the Select button to enter the Resets mode. The display shows the password prompt.

3. Use the arrow buttons to enter the Reset Password; press the Select button.

4. Press the Select button to find the value you want to reset.

5. Press either arrow key to change from “no” to “yes.”

6. Repeat steps 4 and 5 until all desired resets have been made.

7. After enabling all desired resets, press the Mode button. The display reads “RESET NOW? NO.”

8. To reject resets, press the Select button once.

9. To accept resets, press either arrow button to change “NO” to “YES.” Then press the Select button. You’ll see a brief message: “Resetting, Please Wait…” as the changes are made.

➀ Demand values available on models PM-620 and PM-650. ➁ Min/max values available on model PM-650 only.

Bulletin No. 3020IM9503R6/98 Power Meter December 1998 Chapter 7—Display Operation

VIEWING DIAGNOSTIC INFORMATION

To view diagnostic information via the display, follow these steps:

1. Press the Mode button until “Diagnostics” is displayed.

2. Press the Select button to enter the Diagnostics mode. As you continue to press the Select button, you’ll scroll through these screens: Model Number, Serial Number, and four F/W (firmware operating) Version screens.

3. Press the Select button again to go into the register read-only screen.

4. Press the arrow keys to scroll through available registers.

5. Press the Modes button to return to the modes list.

Refer to Appendix F—Register List for additional register information.

USING DISPLAY MODES

The general procedure for displaying data is as follows:

1. Press the Mode button to scroll to one of the six available display modes

➀

(Summary, Power, Energy, Demand

, Power Quality➀, or Min/Max➁).

2. Press the Select button to select a mode.

3. Press arrow buttons to scroll through metered values.

SETTING UP ONBOARD ALARMS (PM-650 ONLY)

To set up alarming via the display, follow these steps:

1. Press the Mode button until “Alarm Setup” is displayed.

2. Press the Select button to enter the Alarm Setup mode. The display shows the password prompt.

3. Use the arrow buttons to enter the password (factory default = 0); press the Select button.

4. Use the arrow keys to scroll through the available alarms. When you reach the desired alarm, press the Select button.

5. Press either arrow key to change from “Disabled” to “Enabled”; press the Select button.

6. The display shows the appropriate scale factor for the pickup value.

Multiply the desired pickup value by the scale factor shown on the screen (see Scaling Alarm Setpoints in Appendix I—Alarm Setup for an explanation of scale factors); press the Select button.

7. Use the arrow keys to increase or decrease the displayed value until the

desired scaled pickup value is reached; press the Select button.

➀ PM-620 and PM-650. ➁ PM-650 only.

Power Meter Bulletin No. 3020IM9503R6/98 Chapter 7—Display Operation December 1998

8. Use the arrow keys to increase or decrease the displayed value until the desired pickup delay is reached; press the Select button.

9. The display shows the appropriate scale factor for the dropout value. Multiply the desired dropout value by the scale factor shown on the screen; press the Select button.

10. Use the arrow keys to increase or decrease the displayed value until the desired scaled dropout value is reached; press the Select button.

11. Use the arrow keys to increase or decrease the displayed value until the desired dropout delay is reached; press the Select button.

12. Use the arrow keys to select either “Output: Enabled” or “Output: Disabled”; press the Select button.

Note: The output selection is not available if the KYZ output has been enabled in the Setup mode.

13. Repeat steps 4–12 above for each additional alarm that you’d like to set up.

14. Press the Mode button.

15. To save the changes you’ve just made, press the up arrow button to change from “No” to “Yes.” Then press the Select button.

To discard the changes, press the Select button while “No” is displayed. The Power Meter will reset.

VIEWING ACTIVE ALARMS (PM-650 ONLY)

To view the active alarms, follow these steps:

1. Press the Mode button until “Alarm Log” is displayed.

2. Press the Select button to enter the alarm log.

3. Use the arrow keys to scroll through the alarms. The last 10 alarms are

listed, starting with the most recent alarm. Alarms that are currently active will flash. To acknowledge the alarms, press the Mode key.

4. Use the arrow keys to change from “No” to “Yes.”

5. Press the Select button. The screen will flash “Acknowledging Alarms.”

The Power Meter returns to “Alarm Log” mode.

Bulletin No. 3020IM9503R6/98 Power Meter December 1998 Chapter 8—Metering Capabilities

CHAPTER 8—METERING CAPABILITIES

REAL-TIME READINGS

The power meter measures currents and voltages and reports rms values for all three phases and a calculated neutral current➀. In addition, the power meter calculates true power factor, real power, reactive power, and more. Table 8-1 lists the real-time readings and their reportable ranges.

Table 8-1

Real-Time Readings

Real-Time Reading Reportable Range

Current

Per-Phase 0 to 32,767 A Neutral ➀ 0 to 32,767 A

Voltage

Line-to-Line, Per-Phase 0 to 3,276,700 V Line-to-Neutral, Per-Phase 0 to 3,276,700 V

Real Power

3-Phase Total 0 to +/- 3,276.70 MW Per-Phase 0 to +/- 3,276.70 MW

Reactive Power

3-Phase Total 0 to +/- 3,276.70 MVAr Per-Phase 0 to +/- 3,276.70 MVAr

Apparent Power

3-Phase Total 0 to 3,276.70 MVA Per-Phase 0 to 3,276.70 MVA

Power Factor (True)

3-Phase Total –0.200 to 1.000 to +0.200 Per-Phase –0.200 to 1.000 to +0.200

Frequency

50/60 Hz 45.00 to 66.00 Hz

MIN/MAX VALUES (PM-650 ONLY)

The power meter stores the following minimum and maximum values in nonvolatile memory:

• Frequency

• Current Phase A, B, C, and Neutral

• Voltage Phase A, Phase B, Phase C, A–B, B–C, C–A

• Power Factor Phase A, Phase B, Phase C, 3-Phase

• kW Phase A, Phase B, Phase C, 3-Phase Total

• kVAr Phase A, Phase B, Phase C, 3-Phase Total

➀ PM-620 and PM-650.

Power Meter Bulletin No. 3020IM9503R6/98 Chapter 8—Metering Capabilities December 1998

• kVA Phase A, Phase B, Phase C, 3-Phase Total

• THD/thd Current Phase A, Phase B, Phase C

• THD/thd Voltage Phase A, Phase B, Phase C

You can view these values using the power meter display, and reset them using the Reset mode (see Performing Resets in Chapter 7).

Using POWERLOGIC application software you can:

• view all min/max values

• upload min/max values from the power meter and save them to disk

• reset min/max values

For instructions on viewing, saving, and resetting min/max data using POWERLOGIC software, refer to the instruction bulletin included with the software.

POWER FACTOR MIN/MAX CONVENTIONS

All running min/max values, with the exception of power factor, are arithmetic minimums and maximums. For example, the minimum phase A–B voltage is simply the lowest value in the range 0 to 3,276,700 V that has occurred since the min/max values were last reset. In contrast, power factor min/max values—since the meter’s midpoint is unity—are not true arithmetic minimums and maximums. Instead, the minimum value represents the measurement closest to –0 on a continuous scale of –0 to 1.00 to +0. The maximum value is the measurement closest to +0 on the same scale.

Figure 8-1 shows the min/max values in a typical environment, assuming a positive power flow. In figure 8-1, the minimum power factor is –.7 (lagging) and the maximum is .8 (leading). It is important to note that the minimum power factor need not be lagging, and the maximum power factor need not be leading. For example, if the power factor values ranged from –.75 to –.95, then the minimum power factor would be –.75 (lagging) and the maximum power factor would be –.95 (lagging). Likewise, if the power factor ranged from +.9 to +.95, the minimum would be +.95 (leading) and the maximum would be +.90 (leading).

See Changing the VAR Sign Convention in Appendix E for instructions on changing the sign convention over the communications link.

Bulletin No. 3020IM9503R6/98 Power Meter December 1998 Chapter 8—Metering Capabilities

Minimum

Power Factor

-.7 (lagging)

LAG

(-)

Figure 8-1: Power factor min/max example

Maximum

Power Factor

.8 (leading)

LEAD

(+)

Range of Power

Factor Values

Unity

1.00

-0

Quadrant

WATTS NEGATIVE (–) VARS NEGATIVE (–)

P.F. LEADING (+)

Reverse Power Flow

WATTS NEGATIVE (–) VARS POSTIVE (+)

P.F. LAGGING (–)

Quadrant

WATTS POSITIVE (+) VARS NEGATIVE (–)

P.F. LAGGING (–)

Normal Power Flow

WATTS POSITIVE (+) VARS POSTIVE (+)

P.F. LEADING (+)

REACTIVE

POWER

Quadrant

REAL POWER

Quadrant

Figure 8-2: Default VAR sign convention

Power Meter Bulletin No. 3020IM9503R6/98 Chapter 8—Metering Capabilities December 1998

REACTIVE

POWER

Quadrant

WATTS NEGATIVE (–) VARS POSITIVE (+)

P.F. LEADING (+)

Reverse Power Flow

WATTS NEGATIVE (–) VARS NEGATIVE (–)

P.F. LAGGING (–)

Quadrant

WATTS POSITIVE (+) VARS POSITIVE (+)

P.F. LAGGING (–)

Normal Power Flow

WATTS POSITIVE (+) VARS NEGATIVE (–)

P.F. LEADING (+)

Quadrant

REAL POWER

Figure 8-3: Alternate VAR sign convention

Bulletin No. 3020IM9503R6/98 Power Meter December 1998 Chapter 8—Metering Capabilities

ENERGY READINGS

The power meter provides 3-phase total energy values for kWh, kVARh, and kVAh (table 8-2). These values can be displayed on the power meter display, or read over the communications link. In the default mode (unsigned), the power meter accumulates energy as positive, regardless of the direction of power flow (i.e., the energy value increases, even during reverse power flow as in a tie breaker application).



Using POWERLOGIC

System Manager Software SMS-3000, SMS-1500, or

PMX-1500, the power meter can be configured to accumulate kWh and kVARh in one of three additional modes: signed, energy in, and energy out. In signed mode, the power meter considers the direction of power flow, allowing the accumulated energy magnitude to both increase and decrease. The power meter can also be configured to accumulate kWh and kVARh as either energy into the load only or energy out of the load only. The default accumulation mode is unsigned (absolute).

The power meter also calculates a 3-phase total apparent energy value. All energy values are stored in nonvolatile memory.

Table 8-2

Energy Readings

Energy Reading, 3-Phase Reportable Range

Accumulated Energy

Real (Signed/Absolute/In/Out) 0 to 9,999,999,999,999,999 Wh Reactive (Signed/Absolute/In/Out) 0 to 9,999,999,999,999,999 VARh Apparent 0 to 9,999,999,999,999,999 VAh

Power Meter Bulletin No. 3020IM9503R6/98 Chapter 8—Metering Capabilities December 1998

POWER ANALYSIS VALUES

The power meter provides power analysis values that can be used to detect power quality problems, diagnose wiring problems, and more. Table 8-3 summarizes the power analysis values.

Table 8-3

Power Analysis Values

Value Reportable Range

THD-Voltage, Current (per phase) ➀ 0 to 3,276.7% Fundamental Voltages (per phase) ➁

Magnitude 0 to 3,276,700 V Angle 0.0 to 359.9°

Fundamental Currents (per phase) ➁

Magnitude 0 to 32,767 A Angle 0.0 to 359.9°

➀ PM-620 and PM-650. ➁ Via communications only.

THD—Total Harmonic Distortion (THD) is a quick measure of the total distortion present in a waveform. It provides a general indication of the “quality” of a waveform. Power meter models PM-620 and PM-650 use the following equation to calculate THD:

100%

THD =

H H

thd—An alternate method for calculating Total Harmonic Distortion, used widely in Europe. Power meter models PM-620 and PM-650 use the following equation to calculate thd:

100%

thd =

Total rms

Bulletin No. 3020IM9503R6/98 Power Meter December 1998 Chapter 8—Metering Capabilities

DEMAND READINGS (PM-620 AND PM-650 ONLY)

Power meter models PM-620 and PM-650 provides both current and power demand readings (table 8-4).

Table 8-4

Demand Readings

Demand Reading Reportable Range

Demand Current, Per-Phase & Neutral

Present 0 to 32,767 A Peak 0 to 32,767 A

Demand Real Power, 3Ø Total

Present 0 to +/-3,276.70 MW Peak 0 to +/-3,276.70 MW

Demand Reactive Power, 3Ø Total

Present 0 to +/-3,276.70 MVAr Peak 0 to +/-3,276.70 MVAr

Demand Apparent Power, 3Ø Total

Present 0 to 3,276.70 MVA

Peak 0 to 3,276.70 MVA Predicted Real Power Demand ➀➁ 0 to ±32,767 kW➂ Predicted Reactive Power Demand ➀➁ 0 to 32,767 kVAr ➂ Predicted Apparent Power Demand ➀➁ 0 to 32,767 KVA ➂

➀ PM-650 only. ➁ Via communications only. ➂ 3-phase total.

Demand Power Calculation Methods

To be compatible with electric utility billing practices, the power meter provides the following types of demand power calculations:

• Sliding Block Interval Demand (PM-620 and PM-650 only)

• Block Interval Demand with Rolling Subinterval (PM-650 only)

• Synch to Comms (PM-650 only)

Block interval demand can be set up using the power meter display. Block interval demand with a subinterval and sync to comms must be set up over the communications link. A brief description of these three demand power calculations follows.

Sliding Block Interval Demand

The block interval demand mode supports a sliding block interval calculation. The default interval is 15 minutes.

In the sliding block interval mode, you can select a demand interval from 1 to 60 minutes in 1-minute increments. (The demand interval is set in the Setup Mode. See Chapter 7 for details.) If you specify an interval of 1 to 15 minutes, the demand calculation updates every 15 seconds on a sliding window basis.

Power Meter Bulletin No. 3020IM9503R6/98 Chapter 8—Metering Capabilities December 1998

If the interval is between 16 and 60 minutes, the demand calculation updates every 60 seconds on a sliding window basis. The present demand value displayed by the power meter is the value for the last completed interval.

Block Interval Demand with Subinterval Option (PM-650 Only)

When using POWERLOGIC software, you must select both a block interval and a subinterval length. The default subinterval length is 0 minutes. At this default setting, the sliding block interval calculation described above is performed. If you set the subinterval to the value of the block interval, a fixed block calculation is performed and the demand calculation is updated every interval. If you set the subinterval to a value other than 0 or the block interval value, the power meter performs a rolling block demand calculation and updates the demand calculation at every subinterval.

Synch to Comms (PM-650 Only)

If you set the demand to 0 using POWERLOGIC software, the synch to comms demand calculation is used. See Appendix E for more information.

Predicted Demand (PM-650 Only)

Predicted demand is the average rate of power use during the most recent one-minute interval. It is called predicted demand because the best estimate of future power use is the power used in the most recent past.

The power meter calculates predicted demand for kW, kVAr, and kVA, updating the readings every 15 seconds. The predicted demand value does not predict the outcome of the present demand interval. Rather, since it represents only the most recent 1 minute interval, it is more responsive to recent increases or decreases in power than the present demand calculation.

Peak Demand

The power meter maintains, in nonvolatile memory, a “peak demand” for each average demand current and average demand power value. It also stores the date and time of each peak demand. In addition to the peak demand, the power meter stores the coinciding average (demand) 3-phase power factor. The average 3-phase power factor is defined as “demand kW/demand kVA” for the peak demand interval.

Peak demand values can be reset using the power meter display, or over the communications link using POWERLOGIC application software. To reset peak demand values using the power meter display, see Performing Resets on page 54.

Bulletin No. 3020IM9503R6/98 Power Meter December 1998 Chapter 8—Metering Capabilities

KYZ PULSE OUTPUT

This section describes the power meter’s pulse output capability. For wiring instructions, see Chapter 5—Wiring. The KYZ output is a Form-C contact with a maximum rating of 96 mA.

Calculating the Pulse Constant

This section shows an example of how to calculate the pulse constant (in this case, a watthour-per-pulse value). To calculate this value, first determine the highest kW value you can expect and the required pulse rate. In this example, the following assumptions are made:

• The metered load should not exceed 1500 kW.

• The KYZ pulses should come in at about two pulses per second at full scale.

Step 1: Translate 1500 kW load into kWH/second.

(1500 kW) (1 Hr) = 1500 kWH

(1500 kWH) = “X” kWH

1 hour 1 second

(1500 kWH) = “X” kWH

3600 seconds 1 second

X = 1500/3600 = 0.4167 kWH/second

Step 2: Calculate the kWH required per pulse.

0.4167 kWH/second = 0.2084 kWH/pulse 2 pulses/second

Step 3: Round to the nearest hundredth, since the power meter accepts

0.01 kWH increments.

Ke = 0.21 kWH/pulse

Summary:

• 3-wire basis—0.21 kWH/pulse will provide approximately 2 pulses per second at full scale.

• 2-wire basis—0.11 kWH/pulse will provide approximately 2 pulses per second at full scale. (To convert to the kWH/pulse required on a 2-wire basis, divide Ke by 2. This is necessary since the power meter Form-C relay generates two pulses—KY and KZ—for every pulse that is counted on a 2-wire basis.)

Power Meter Bulletin No. 3020IM9503R6/98 Chapter 9—Onboard Alarming December 1998

CHAPTER 9—ONBOARD ALARMING (PM-650 ONLY)

The power meter 650 has 30 alarm conditions available onboard, including over/under conditions and unbalance conditions (See Alarm Conditions and Alarm Codes in Appendix I for a complete list of alarm conditions.) The power meter maintains a counter for each alarm to keep track of the total number of occurrences.

These alarm conditions are tools that enable the power meter to execute tasks automatically. Using POWERLOGIC application software, each alarm condition can be assigned one or more of the following tasks:

• Force data log entries in the data log file

• Operate the KYZ relay output

SETPOINT-DRIVEN ALARMS

All of the alarm conditions require that you define the following setpoints:

• Pickup Setpoint

• Pickup Delay (in seconds)

• Dropout Setpoint

• Dropout Delay (in seconds)

For instructions on setting up alarm/relay functions from the power meter display, see Setting Up Onboard Alarms on page 55.

Bulletin No. 3020IM9503R6/98 Power Meter December 1998 Chapter 9—Onboard Alarming

Figure 9-1 below illustrates how the power meter 650 handles setpoint-driven alarms.

Max2

Max1

Pickup Setpoint

Dropout Setpoint

∆T

Pickup Delay

∆T

Dropout Delay

EV1 EV2

Alarm Period

EVI— Power meter 650 records the date/time that the pickup setpoint and time delay were satisfied, and

the maximum value reached (Max1) during the pickup delay period (∆T). Also, the power meter performs any tasks—forced data log entries, relay output operations—assigned to the event.

EV2— Power meter 650 records the date/time dropout setpoint and time delay were satisfied, and the

maximum value reached (Max2) during the alarm period.

Figure 9-1: How the power meter handles setpoint-driven alarms

Figure 9-2 shows the event log entries for figure 9-1 displayed by POWERLOGIC application software.

Max1

EV1

EV2

SETPOINT-CONTROLLED RELAY FUNCTIONS

The KYZ output can be used to operate an alarm horn or bell to annuciate the alarm condition or as an input into a building management system. For instructions on wiring the KYZ output as an alarm contact, see Chapter 5—Wiring.

Max2

Figure 9-2: Sample event log entries

Power Meter Bulletin No. 3020IM9503R6/98 Chapter 9—Onboard Alarming December 1998

Undervoltage

• Pickup and dropout setpoints are entered in volts. Very large values may require scale factors. Refer to Appendix I—Alarm Setup.

• The per-phase overvoltage alarm occurs when the per-phase voltage is equal to or above the pickup setpoint for the specified pickup delay period (in seconds).

• When the overvoltage alarm occurs, the power meter operates the KYZ output (if the output is enabled).

• The relay remains closed until the overvoltage alarm clears. The alarm clears when the phase voltage remains below the dropout setpoint for the specified dropout delay period.

Unbalance Current:

• Pickup and dropout setpoints are entered in tenths of percent, based on the percentage difference between each phase current with respect to the average of all phase currents. For example, enter an unbalance of 16.0% as 160.

• The unbalance current alarm occurs when the phase current deviates from the average of the phase currents, by the percentage pickup setpoint, for the specified pickup delay (in seconds).

• When the unbalance current alarm occurs, the power meter operates the KYZ output (if the output is enabled).

• The relay remains closed until the unbalance current alarm clears. The alarm clears when the percentage difference between the phase current and the average of all phases remains below the dropout setpoint for the specified dropout delay period.

Unbalance Voltage

Pickup and dropout setpoints are entered in tenths of percent, based on the percentage difference between each phase voltage with respect to the average of all phase voltages. For example, enter an unbalance of 16.0% as 160.

• The unbalance voltage alarm occurs when the phase voltage deviates from the average of the phase voltages, by the percentage pickup setpoint, for the specified pickup delay (in seconds).

• When the unbalance voltage alarm occurs, the power meter operates the KYZ output (if the output is enabled).

• The relay remains closed until the unbalance voltage alarm clears. The unbalance voltage alarm clears when the percentage difference between the phase voltage and the average of all phases remains below the dropout setpoint for the specified dropout delay period.

Bulletin No. 3020IM9503R6/98 Power Meter December 1998 Chapter 10—Logging

CHAPTER 10—LOGGING (PM-650 ONLY)

ALARM LOG

The PM-650 has an alarm log viewable only from the power meter display. The alarm log stores the last 10 alarms that occurred and indicates whether each of those alarms has been acknowledged. The alarm log and event log are two separate logs.

EVENT LOG

Power meter model 650 also provides an event log to record onboard events. (An event occurs when the pickup or dropout setpoint of an alarm is reached; see Chapter 9 for more information.) The event log holds a user-configurable number of alarm events in FIFO (first-in-first-out) or Fill/Hold order. The event log is factory pre-configured to hold 20 events. Using POWERLOGIC application software, you can upload the event log for viewing, save it to disk, and clear the power meter’s event log memory.

DATA LOG

The PM-650 is equipped with nonvolatile memory for storing meter readings at regular intervals. One data log is provided for user configuration. The following items can be configured for the data log file:

• Logging interval—1 minute to 24 hours in 1 minute increments

• Offset time

• First-In-First-Out (FIFO), or Fill & Hold

• Values to be logged The data log is pre-configured to log each of the following hourly:

• Per-phase quantities: present current demand (including neutral) and line-to-line voltages

• 3-phase quantities: true power factor, kW demand total, kVAr demand total, and kVA demand total

For instructions on setting up and clearing data log files, refer to the POWERLOGIC application software instruction bulletin.

ALARM-DRIVEN DATA LOG ENTRIES

Using POWERLOGIC application software, you can select an alarm condition such as “Overcurrent Phase A” and set up the power meter to force data log entries into the log file each time the alarm condition occurs.

STORAGE CONSIDERATIONS

The PM-650 has 1K of nonvolatile memory allocated for the event log and the data log. See Appendix J—Calculating Log File Size for additional information on the event and data logs.

Power Meter Bulletin No. 3020IM9503R6/98 Appendix A—Specifications December 1998

APPENDIX A—SPECIFICATIONS

Metering Specifications

Current Inputs

Current Range ..................................................................................... 0–10.0 A ac

Nominal Current............................................................................................ 5 A ac

Voltage Inputs

Voltage Range (line to line) ................................................................. 35–600 Vac

Voltage Range (line to neutral) ............................................................ 20–347 Vac

Nominal Voltage (typical)................................... 208/120, 480/277, 600/347 Vrms

Frequency Range (50/60 Hz)..................................................................... 45 to 66 Hz

Harmonic Response—Voltage, Current

Frequency 45–65 Hz ....................................................................... 31st harmonic

Accuracy

Current➀..................................................................................... ±0.25% reading

Voltage......................................................................................... ±0.25% reading

Power........................................................................................... ±0.5% reading

Energy➃....................................................................................... ±0.5% reading

Demand➃.................................................................................... ±0.5% reading

Power Factor .............................................................................................. ±1.00%

Frequency 50/60 Hz ................................................................................. ±0.02 Hz

➁➂

➁➂ ➁➂ ➁➂

➂

Metering Input Electrical Specifications

Current Inputs

Nominal Full Scale............................................................................................. 5 A

Metering Over-Range ......................................................................................... 2x

Overcurrent Withstand.................................................................. 500 A, 1 second

Input Impedance ................................................................................ 1.5 milliohms

Burden ....................................................................................................... 0.15 VA

Isolation ......................................................................................................... 600 V

Voltage Inputs

Nominal Full Scale.................................................... 208/120, 480/277, 600/347 V

Metering Over-Range ...................................................................................... 20%

Input Impedance ............................................................. Greater than 2 megohms

➀ Any CT secondary currents less than 20 mA are reported as zero. ➁ From 20% nominal current to 150% nominal current. ➂ For readings less than 20% nominal, add ±0.05 full scale error. ➃ Satisfies applicable ANSI C12.16 revenue accuracy requirements.

Bulletin No. 3020IM9503R6/98 Power Meter December 1998 Appendix A—Specifications

Control Power Input Specifications

Input Range, ac..........................................................................................90–600 Vac

Burden ............................................................................. 90 Vac–264 Vac, 10 VA

265 Vac–600 Vac, 30 VA

Frequency Range .................................................................................... 45–66 Hz

Isolation ............................................................................... 2000 Vac/60 seconds

Ride-through on Power Loss .................................................... 100 ms at 115 Vac

Input Range, dc....................................................................................... 100–300 Vdc

Burden ......................................................................................................... 6 watts

Isolation ................................................................................................... 1000 Vdc

Ride-through on Power Loss .................................................... 100 ms at 125 Vdc

Main’s Supply Voltage Fluctuations ......................................... not to exceed +/– 10%

Relay Output Specifications

KYZ .......................................................................... 96 mA max. at 240 Vac/300 Vdc

Environmental Specifications (Indoor Use Only)

Operating Temperature—Meter .................................................................. 0 to +60°C

Operating Temperature—Display ............................................................... 0 to +55°C

Storage Temperature .............................................................................. –20 to +70°C

Humidity Rating...................................................... 5–95% (non-condensing) @ 30°C

Pollution Degree ........................................................................................................ 2

Installation Category .................................................................................................. II

Altitude Rating........................................................................ 0 to 4,570 m (15,000 ft.)

Physical Specifications

Weight

Module ............................................................................................ 17.6 oz. (500g)

Display ...............................................................................................7.1 oz. (202g)

Dimensions ........................................................................................ See Appendix B

Regulatory/Standards Compliance

Electromagnetic Interference

Radiated ........................................... EN55011 & EN55022, FCC Part 15 Class A

Conducted ........................................ EN55011 & EN55022, FCC Part 15 Class A

Immunity ............................................................................... IEC 1000-4-3 Level 3

Electrostatic Discharge (Air Discharge) ................................ IEC 1000-4-2 Level 3

Electrical Fast Transient ....................................................... IEC 1000-4-4 Level 4

Immunity to Surge ................................................................ IEC 1000-4-5 Level 4

Safety ........................................................................... CSA, UL 508, CE, EN61010-1

Power Meter Bulletin No. 3020IM9503R6/98 Appendix B—Dimensions December 1998

APPENDIX B—DIMENSIONS

3.81

6.08

154

4.75

121

96.7

4.50

114

3.63

4.50

114

Inches

Millimeters

4.50

114

1.26

Figure B-1: Dimensions of power meter and display

Bulletin No. 3020IM9503R6/98 Power Meter December 1998 Appendix C—Communication Cable Pinouts

APPENDIX C—COMMUNICATION CABLE PINOUTS

CAB-107

Power Meter

Terminal

Male DB-9 Connector

IN- (4)—White 1

TXA—White 1

TXB—Green 2

RXA—Black 3

IN+ (5)—Green 2

OUT- (2)—Black 3

OUT+ (3)—Red 4

5 6 7

Shield—Shield 9

SHLD (1) Shield 9

CC-100

11 22 33 44 55 66 77 88 99

CAB-108

RXB—Red 4

5 6 7 8

CAB-102, CAB-104

22 33 44 55 66 77

88 20 20 22 22

Power Meter Bulletin No. 3020IM9503R6/98 Appendix D—Additional Wiring Diagrams December 1998

APPENDIX D— ADDITIONAL WIRING DIAGRAMS

DANGER

HAZARD OF ELECTRICAL SHOCK, BURN, OR EXPLOSION.

• Turn off all power supplying this equipment before opening the terminal shield or making connections.

• Close and snap the terminal shield before turning power on.

Failure to observe these precautions will result in death or severe personal injury!

SUPPORTED WIRING CONNECTIONS

Table D-1 on the following page describes various power systems supported by the power meter. The table also shows which power meter system type should be used (system I.D.) and how the power meter should be wired.

Figures D-1, D-2, and D-3 show CT, PT, and control power wiring. See Chapter 5 for other wiring diagrams.

To comply with CE, see CE Compliance, page 22.

Bulletin No. 3020IM9503R6/98 Power Meter December 1998 Appendix D—Additional Wiring Diagrams

Table D-1

Power Meter System Wiring Connections

System Wiring

3Ø, 4W wye 40 3Ø, 4W wye grounded figure 5-6 neutral or 5-7

3Ø, 3W wye 30 or 31 3Ø, 3W delta

3Ø, 3W wye, 40 3Ø, 4W wye 1. grounded figure 5-6 2. neutral or 5-7

3Ø, 4W wye 40 3Ø, 4W wye

2Ø, 3W wye, 40 1Ø, 3W 1. Jumper input of phase not being metered grounded figure D-1 to neutral voltage input. neutral

Power Meter Wiring for

System I.D.➀Power Meter

figure 5-3,

5-4, or 5-5

figure 5-6

or 5-7

Notes

Connect GND to neutral voltage terminal. Line to neutral voltage may be unbalanced due to potential difference between GND at transformer & GND at meter.

3Ø, 3W delta ➁

3Ø, 4W delta, 40 3Ø, 4W 1. grounded figure D-2 mid-tap 2.

3Ø, 4W 40 3Ø, 4W 1. open delta, figure D-2 grounded 2. mid-tap power meter.

3Ø, 3W open 30 or 31 3Ø, 3W delta 1. Wire grounded corner into B phase delta, corner figure 5-4 voltage input. grounded or 5-5

1Ø, 3W 40 1Ø, 3W 1. B phase readings will be zero. grounded figure D-1 2. mid-tap power meter.

1Ø, 2W 40 1Ø, 3W 1. Use only L grounded figure D-1 2. B & C phase readings will be zero. end of phase 3. mid-tap power meter.

30 or 31 3Ø, 3W delta 1. For ungrounded delta systems only.

figure 5-3

Per phase power factor will be determined with respect to neutral. Always use 480/277 voltage range on the power meter.

Per phase power factor will be determined with respect to neutral. Always use 480/277 voltage range on the

Always use 208/120 voltage range on the

-N PT and L1 CT.

Always use 208/120 voltage range on the

➀ System type as shown on power meter setup screen. ➁ For 3Ø, 3W delta corner-grounded applications, install two L-L rated PTs as shown in figures 5-4 and 5-5.

Power Meter Bulletin No. 3020IM9503R6/98 Appendix D—Additional Wiring Diagrams December 1998

Line

VDS

Fuses

Top

Voltage Control

Power

Load

KYZ

Comms

Current

Display Communications Port

Note: Control power can be drawn from fused voltage inputs L-L, or L-N, or an external source. See page 22 for CPT and fuse recommendations.

Control power range: L1-L2 90–600 Vrms

90–300 Vdc

When configuring the power meter, set system type to 4-wire (40) and PT ratio to 120:120.

Installation Category II

Figure D-1: 240/120 V 1-phase, 3-wire direct voltage connection with 2 CTs

Bulletin No. 3020IM9503R6/98 Power Meter December 1998 Appendix D—Additional Wiring Diagrams

AØ BØ

Line

CØ

VDS

Fuses

Top

Load

KYZ

Voltage

Control Power

Comms

Current

Display Communications Port

Note: Control power can be drawn from fused voltage inputs L-L, or L-N, or an external source. See page 22 for CPT and fuse recommendations.

Control power range: L1-L2 90–600 Vrms

90–300 Vdc Use at 480/277 volt range for 240/120 V and 480/240 V systems. Use system type 40. Installation Category II

Figure D-2: 3-phase, 4-wire delta with 3 PTs and 3 CTs

Power Meter Bulletin No. 3020IM9503R6/98 Appendix D—Additional Wiring Diagrams December 1998

AØ BØ

Line

CØ

Load

CDS

Fuse

VDS

Fuses

CPT (120 or 240 Vac Secondary, Projected 10 VA)

Comms

Fuses

Top

Voltage

Control Power

Current

Wye PT Connection (120 V L-N Secondaries)

KYZ

Display Communications Port

Note: Control power can be drawn from fused voltage inputs L-L, or L-N, or an external source. See page 22 for CPT and fuse recommendations.

Control power range: L1-L2 90–600 Vrms

Installation Category II

Figure D-3: 3-phase, 4-wire wye, 3-wire load with 3 PTs and 2 CTs

90–300 Vdc

Bulletin No. 3020IM9503R6/98 Power Meter December 1998 Appendix E—Using the Command Interface

APPENDIX E—USING THE COMMAND INTERFACE

RESETTING DEMAND AND ENERGY VIA COMMUNICATIONS

Using System Manager Software (SMS-3000, SMS-1500, or PMX-1500), you can reset Peak Demand Currents, Peak Demand Powers, Min/Max and the associated power factors. You can also clear accumulated energies. If you are not using one of these software packages, you can perform these functions via communications by entering the desired command code (see below) to register

7700.

Command

Code Description

4110 Reset min/max (PM-650 only) 5110 Reset peak demand currents 5120 Reset peak demand powers and associated average power factors 6210 Clear all accumulated energies

CHANGING THE VAR SIGN CONVENTION

The power meter offers two VAR sign conventions (see figures 8-2 and 8-3 in Chapter 8). The procedures below tell how to change the sign convention via communications.

To change to the alternate sign convention, complete the following steps:

1. (SY/MAX or POWERLOGIC protocol only) Read register 7715.

2. Read register 2028, the value of the system password.

3. Write the value in register 2028 into register 7721.

4. Write the decimal value 2020 into register 7720.

5. Change to binary mode and read register 7755.

6. Change bit 0, the least significant or right-most bit, to a 1 and write the new value back to register 7755.

7. Change back to decimal mode and read register 2028.

8. Write the value of register 2028 into register 7721.

9. Write the decimal value 2050 into register 7720. The changes are saved and the power meter resets.

To return to the default sign convention, complete the following steps:

1. (SY/MAX or POWERLOGIC protocol only) Read register 7715.

2. Read register 2028, the value of the system password.

Power Meter Bulletin No. 3020IM9503R6/98 Appendix E—Using the Command Interface December 1998

3. Write the value in register 2028 into register 7721.

4. Write the decimal value 2020 into register 7720.

5. Change to binary mode and read register 7755.

6. Change bit 0, the least significant or right-most bit, to a 0 and write the new value back to register 7755.

7. Change back to decimal mode and read register 2028.

8. Write the value of register 2028 into register 7721.

9. Write the decimal value 2050 into register 7720. The changes are saved and the power meter resets.

SYNCH TO COMMS (PM-650 Only)

Using command 5910, it is possible to synchronize the demand intervals of multiple meters on a communications network. For example, a PLC input could be monitoring the utility revenue meter’s end-of-demand-interval pulse. The PLC can be programmed to issue command 5910 to multiple meters whenever the utility meter starts a new demand interval. This technique causes the demand readings of each meter to be calculated over the same fixed block interval.

Enter the command code to register 7700 via communications.

Command Code Description

5910 Start a new demand interval (if demand interval is 0)

Bulletin No. 3020IM9503R6/98 Power Meter December 1998 Appendix F—Register List

APPENDIX F—REGISTER LIST

Reg. No. ➀ Register Name Units Range REAL TIME METERED VALUES

1000 Update Interval 1000ths 0 to 10,000

of a second

1001 Frequency .01 Hertz/Scale 4500 to 6600

Factor F (45–66Hz) Range 1002 Unused 1003 Current, Phase A Amps/Scale 0 to 32,767

Factor A 1004 Current, Phase B Amps/Scale 0 to 32,767

Factor A 1005 Current, Phase C Amps/Scale 0 to 32,767

Factor A 1006 ➁ Current, Calculated Amps/Scale 0 to 32,767

Neutral Factor A

1007– Unused 1009

1010 Current Unbalance, Phase A Percent in 10ths 0 to ±1000 1011 Current Unbalance, Phase B Percent in 10ths 0 to ±1000 1012 Current Unbalance, Phase C Percent in 10ths 0 to ±1000 1013 Current Unbalance, Worst Percent in 10ths 0 to ±1000 1014 Voltage, Phase Volts/Scale 0 to 32,767

A to B Factor D

1015 Voltage, Phase Volts/Scale 0 to 32,767

B to C Factor D

1016 Voltage, Phase Volts/Scale 0 to 32,767

C to A Factor D 1017 Unused 1018 Voltage, Phase Volts/Scale 0 to 32,767

A to Neutral Factor D

➀ These registers can be used with POWERLOGIC, Modbus, or Jbus protocols. Although POWERLOGIC

and Jbus protocols use a zero-based register addressing convention and Modbus uses a one-based register addressing convention, the power meter, when configured for Modbus communications,

automatically compensates

30,000 or 40,000 offset can be used (e.g., Current, Phase A = 31,003 or 41,003).

➁ PM-620 and PM-650 only.

for the Modbus offset of one. Regard all registers as holding registers where a

Power Meter Bulletin No. 3020IM9503R6/98 Appendix F—Register List December 1998

Reg. No. ➀ Register Name Units Range

1019 Voltage, Phase Volts/Scale 0 to 32,767

B to Neutral Factor D

1020 Voltage, Phase Volts/Scale 0 to 32,767

C to Neutral Factor D 1021 Reserved 1022 Voltage Unbalance, Phase A-B Percent in 10ths 0 to ±1000 1023 Voltage Unbalance, Phase B-C Percent in 10ths 0 to ±1000 1024 Voltage Unbalance, Phase C-A Percent in 10ths 0 to ±1000 1025 Voltage Unbalance, L-L Worst Percent in 10ths 0 to ±1000 1026 Voltage Unbalance, Phase A Percent in 10ths 0 to ±1000 1027 Voltage Unbalance, Phase B Percent in 10ths 0 to ±1000 1028 Voltage Unbalance, Phase C Percent in 10ths 0 to ±1000 1029 Voltage Unbalance, L-N Worst Percent in 10ths 0 to ±1000 1030 Reserved 1031 True Power Factor, In 1000ths –100 to +1000

Phase A to +100 1032 True Power Factor, In 1000ths –100 to +1000

Phase B to +100 1033 True Power Factor, In 1000ths –100 to +1000

Phase C to +100 1034 True Power Factor, In 1000ths –100 to +1000

3-Phase Total to +100 1035– Unused

1038 1039 Real Power, kW/Scale 0 to ±32,767

Phase A Factor E 1040 Real Power, kW/Scale 0 to ±32,767

Phase B Factor E

➀ These registers can be used with POWERLOGIC, Modbus, or Jbus protocols. Although POWERLOGIC

and Jbus protocols use a zero-based register addressing convention and Modbus uses a one-based register addressing convention, the power meter, when configured for Modbus communications,

automatically compensates

30,000 or 40,000 offset can be used (e.g., Current, Phase A = 31,003 or 41,003).

for the Modbus offset of one. Regard all registers as holding registers where a

Bulletin No. 3020IM9503R6/98 Power Meter December 1998 Appendix F—Register List

Reg. No. ➀ Register Name Units Range

1041 Real Power, kW/Scale 0 to ±32,767

Phase C Factor E

1042 Real Power, kW/Scale 0 to ±32,767

3-Phase Total Factor E

1043 Reactive Power, kVAr/Scale 0 to ±32,767

Phase A Factor E

1044 Reactive Power, kVAr/Scale 0 to ±32,767

Phase B Factor E

1045 Reactive Power, kVAr/Scale 0 to ±32,767

Phase C Factor E

1046 Reactive Power, kVAr/Scale 0 to ±32,767

3-Phase Total Factor E

1047 Apparent Power, kVA/Scale 0 to +32,767

Phase A Factor E

1048 Apparent Power, kVA/Scale 0 to +32,767

Phase B Factor E

1049 Apparent Power, kVA/Scale 0 to +32,767

Phase C Factor E

1050 Apparent Power, kVA/Scale 0 to +32,767

3-Phase Total Factor E

1051 ➁ THD/thd % in 10ths 0 to 10,000

A Current

1052 ➁ THD/thd % in 10ths 0 to 10,000

B Current

1053 ➁ THD/thd % in 10ths 0 to 10,000

C Current 1054 Reserved 1055 ➁ THD/thd % in 10ths 0 to 10,000

A Voltage 1056 ➁ THD/thd % in 10ths 0 to 10,000

B Voltage

➀ These registers can be used with POWERLOGIC, Modbus, or Jbus protocols. Although POWERLOGIC

and Jbus protocols use a zero-based register addressing convention and Modbus uses a one-based register addressing convention, the power meter, when configured for Modbus communications,

automatically compensates

30,000 or 40,000 offset can be used (e.g., Current, Phase A = 31,003 or 41,003).

➁ PM-620 and PM-650 only.

for the Modbus offset of one. Regard all registers as holding registers where a

Power Meter Bulletin No. 3020IM9503R6/98 Appendix F—Register List December 1998

Reg. No. ➀ Register Name Units Range

1057 ➁ THD/thd % in 10ths 0 to 10,000

C Voltage

1058– Unused 1077

1078 A Current Amps/Scale 0 to 32,767

Fundamental Factor A RMS Magnitude

1079 A Current 10ths of 0 to 3,599

Fundamental Degrees Coincident Angle

1080 B Current Amps/Scale 0 to 32,767

Fundamental Factor A RMS Magnitude

1081 B Current 10ths of 0 to 3,599

Fundamental Degrees Coincident Angle

1082 C Current Amps/Scale 0 to 32,767

Fundamental Factor A RMS Magnitude

1083 C Current 10ths of 0 to 3,599

Fundamental Degrees Coincident Angle

1084– Unused 1087

1088 A Voltage Volts/Scale 0 to 32,767

Fundamental Factor D RMS Magnitude

1089 A Voltage 10ths of 0 to 3,599

Fundamental Degrees Coincident Angle

1090 B Voltage Volts/Scale 0 to 32,767

Fundamental Factor D RMS Magnitude

1091 B Voltage 10ths of 0 to 3,599

Fundamental Degrees Coincident Angle

➀ These registers can be used with POWERLOGIC, Modbus, or Jbus protocols. Although POWERLOGIC

and Jbus protocols use a zero-based register addressing convention and Modbus uses a one-based register addressing convention, the power meter, when configured for Modbus communications,

automatically compensates

30,000 or 40,000 offset can be used (e.g., Current, Phase A = 31,003 or 41,003).

➁ PM-620 and PM-650 only.

for the Modbus offset of one. Regard all registers as holding registers where a

Bulletin No. 3020IM9503R6/98 Power Meter December 1998 Appendix F—Register List

Reg. No. ➀ Register Name Units Range

1092 C Voltage Volts/Scale 0 to 32,767

Fundamental Factor D RMS Magnitude

1093 C Voltage 10ths of 0 to 3,599

Fundamental Degrees Coincident Angle

1094 A-B Voltage Volts/Scale 0 to 32,767

Fundamental Factor D RMS Magnitude

1095 A-B Voltage 10ths of 0 to 3,599

Fundamental Degrees Coincident Angle

1096 B-C Voltage Volts/Scale 0 to 32,767

Fundamental Factor D RMS Magnitude

1097 B-C Voltage 10ths of 0 to 3,599

Fundamental Degrees Coincident Angle

1098 C-A Voltage Volts/Scale 0 to 32,767

Fundamental Factor D RMS Magnitude

1099 C-A Voltage 10ths of 0 to 3,599

Fundamental Degrees

Coincident Angle 1200 ➁ Minimum Update Interval In 1000ths of a second 0 to 10,000 1201 ➁ Minimum Frequency Hertz/Scale Factor F 4500 to 6600 1202 ➁ Reserved 1203 ➁ Minimum Current, Phase A Amps/Scale Factor A 0 to 32,767 1204 ➁ Minimum Current, Phase B Amps/Scale Factor A 0 to 32,767 1205 ➁ Minimum Current, Phase C Amps/Scale Factor A 0 to 32,767 1206 ➁ Minimum Current Neutral, Calculated Amps/Scale Factor A 0 to 32,767 1207 ➁ Reserved

➀ These registers can be used with POWERLOGIC, Modbus, or Jbus protocols. Although POWERLOGIC

and Jbus protocols use a zero-based register addressing convention and Modbus uses a one-based register addressing convention, the power meter, when configured for Modbus communications,

automatically compensates

30,000 or 40,000 offset can be used (e.g., Current, Phase A = 31,003 or 41,003).

➁ PM-650 only.

for the Modbus offset of one. Regard all registers as holding registers where a

Power Meter Bulletin No. 3020IM9503R6/98 Appendix F—Register List December 1998

Reg. No. ➀ Register Name Units Range

1208 ➁ Reserved 1209 ➁ Reserved 1210 ➁ Minimum Current Unbalance, Phase A Percent in 10ths 0 to ±1000 1211 ➁ Minimum Current Unbalance, Phase B Percent in 10ths 0 to ±1000 1212 ➁ Minimum Current Unbalance, Phase C Percent in 10ths 0 to ±1000 1213 ➁ Minimum Current Unbalance, Worst Percent in 10ths 0 to ±1000 1214 ➁ Minimum Voltage, Phase A to B Volts/Scale Factor D 0 to 32,767 1215 ➁ Minimum Voltage, Phase B to C Volts/Scale Factor D 0 to 32,767 1216 ➁ Minimum Voltage, Phase C to A Volts/Scale Factor D 0 to 32,767 1217 ➁ Reserved 1218 ➁ Minimum Voltage, Phase A Volts/Scale Factor D 0 to 32,767 1219 ➁ Minimum Voltage, Phase B Volts/Scale Factor D 0 to 32,767 1220 ➁ Minimum Voltage, Phase C Volts/Scale Factor D 0 to 32,767 1221 ➁ Reserved 1222 ➁ Minimum Voltage Unbalance, Phase A-B Percent in 10ths 0 to ±1000 1223 ➁ Minimum Voltage Unbalance, Ph. B-C Percent in 10ths 0 to ±1000 1224 ➁ Minimum Voltage Unbalance, Ph. C-A Percent in 10ths 0 to ±1000 1225 ➁ Minimum Volt. Unbalance, Worst L-L Percent in 10ths 0 to ±1000 1226 ➁ Minimum Voltage Unbalance, Ph. A Percent in 10ths 0 to ±1000 1227 ➁ Minimum Voltage Unbalance, Ph. B Percent in 10ths 0 to ±1000 1228 ➁ Minimum Voltage Unbalance, Ph. C Percent in 10ths 0 to ±1000 1229 ➁ Minimum Volt. Unbalance, Worst L-N Percent in 10ths 0 to ±1000 1230 ➁ Reserved 1231 ➁ Minimum True Power Factor, Phase A In 1000ths -100 to +1000 to +100

➀ These registers can be used with POWERLOGIC, Modbus, or Jbus protocols. Although POWERLOGIC

and Jbus protocols use a zero-based register addressing convention and Modbus uses a one-based register addressing convention, the power meter, when configured for Modbus communications,

automatically compensates

30,000 or 40,000 offset can be used (e.g., Current, Phase A = 31,003 or 41,003).

➁ PM-650 only.

for the Modbus offset of one. Regard all registers as holding registers where a

Bulletin No. 3020IM9503R6/98 Power Meter December 1998 Appendix F—Register List

Reg. No. ➀ Register Name Units Range

1232 ➁ Minimum True Power Factor, Phase B In 1000ths –100 to +1000 to +100 1233 ➁ Minimum True Power Factor, Phase C In 1000ths –100 to +1000 to +100 1234 ➁ Minimum True Power Factor, Total In 1000ths –100 to +1000 to +100 1235 ➁ Reserved 1236 ➁ Reserved 1237 ➁ Reserved 1238 ➁ Reserved 1239 ➁ Minimum Real Power, Phase A kW/ Scale Factor E 0 to ±32,767 1240 ➁ Minimum Real Power, Phase B kW/ Scale Factor E 0 to ±32,767 1241 ➁ Minimum Real Power, Phase C kW/ Scale Factor E 0 to ±32,767 1242 ➁ Minimum Real Power, Total kW/ Scale Factor E 0 to ±32,767 1243 ➁ Minimum Reactive Power, Phase A kVAr/Scale Factor E 0 to ±32,767 1244 ➁ Minimum Reactive Power, Phase B kVAr/Scale Factor E 0 to ±32,767 1245 ➁ Minimum Reactive Power, Phase C kVAr/Scale Factor E 0 to ±32,767 1246 ➁ Minimum Reactive Power, Total kVAr/Scale Factor E 0 to ±32,767

➀ These registers can be used with POWERLOGIC, Modbus, or Jbus protocols. Although POWERLOGIC

and Jbus protocols use a zero-based register addressing convention and Modbus uses a one-based register addressing convention, the power meter, when configured for Modbus communications,

automatically compensates

30,000 or 40,000 offset can be used (e.g., Current, Phase A = 31,003 or 41,003).

➁ PM-650 only.

for the Modbus offset of one. Regard all registers as holding registers where a

Power Meter Bulletin No. 3020IM9503R6/98 Appendix F—Register List December 1998

Reg. No. ➀ Register Name Units Range

1247 ➁ Minimum Apparent Power, Phase A kVA/Scale Factor E 0 to ±32,767 1248 ➁ Minimum Apparent Power, Phase B kVA/Scale Factor E 0 to ±32,767 1249 ➁ Minimum Apparent Power, Phase C kVA/Scale Factor E 0 to ±32,767 1250 ➁ Minimum Apparent Power, Total kVA/Scale Factor E 0 to ±32,767 1251 ➁ Minimum THD/thd Current, Phase A Percent in 10ths 0 to 10,000 1252 ➁ Minimum THD/thd Current, Phase B Percent in 10ths 0 to 10,000 1253 ➁ Minimum THD/thd Current, Phase C Percent in 10ths 0 to 10,000 1254 ➁ Reserved 1255 ➁ Minimum THD/thd Voltage, Phase A Percent in 10ths 0 to 10,000 1256 ➁ Minimum THD/thd Voltage, Phase B Percent in 10ths 0 to 10,000 1257 ➁ Minimum THD/thd Voltage, Phase C Percent in 10ths 0 to 10,000 1258 ➁ Reserved 1259 ➁ Reserved 1400 ➁ Maximum Update Interval In 1000ths of a second 0 to 10,000 1401 ➁ Maximum Frequency Hertz/Scale Factor F 4500 to 6600 1402 ➁ Reserved 1403 ➁ Maximum Current, Phase A Amps/Scale Factor A 0 to 32,767 1404 ➁ Maximum Current, Phase B Amps/Scale Factor A 0 to 32,767 1405 ➁ Maximum Current, Phase C Amps/Scale Factor A 0 to 32,767 1406 ➁ Maximum Current Neutral, Calculated Amps/Scale Factor A 0 to 32,767 1407 ➁ Reserved 1408 ➁ Reserved 1409 ➁ Reserved 1410 ➁ Maximum Current Unbalance, Ph. A Percent in 10ths 0 to ±1000 1411 ➁ Maximum Current Unbalance, Ph. B Percent in 10ths 0 to ±1000

➀ These registers can be used with POWERLOGIC, Modbus, or Jbus protocols. Although POWERLOGIC

and Jbus protocols use a zero-based register addressing convention and Modbus uses a one-based register addressing convention, the power meter, when configured for Modbus communications,

automatically compensates

30,000 or 40,000 offset can be used (e.g., Current, Phase A = 31,003 or 41,003).

➁ PM-650 only.

for the Modbus offset of one. Regard all registers as holding registers where a

Bulletin No. 3020IM9503R6/98 Power Meter December 1998 Appendix F—Register List

Reg. No. ➀ Register Name Units Range

1412 ➁ Maximum Current Unbalance, Ph. C Percent in 10ths 0 to ±1000 1413 ➁ Maximum Current Unbalance, Worst Percent in 10ths 0 to ±1000 1414 ➁ Maximum Voltage, Phase A-B Volts/Scale Factor D 0 to 32,767 1415 ➁ Maximum Voltage, Phase B-C Volts/Scale Factor D 0 to 32,767 1416 ➁ Maximum Voltage, Phase C-A Volts/Scale Factor D 0 to 32,767 1417 ➁ Reserved 1418 ➁ Maximum Voltage, Phase A Volts/Scale Factor D 0 to 32,767 1419 ➁ Maximum Voltage, Phase B Volts/Scale Factor D 0 to 32,767 1420 ➁ Maximum Voltage, Phase C Volts/Scale Factor D 0 to 32,767 1421 ➁ Reserved 1422 ➁ Maximum Volt. Unbalance, Ph. A-B Percent in 10ths 0 to ±1000 1423 ➁ Maximum Volt. Unbalance, Ph. B-C Percent in 10ths 0 to ±1000 1424 ➁ Maximum Volt. Unbalance, Ph. C-A Percent in 10ths 0 to ±1000 1425 ➁ Maximum Volt. Unbalance, Worst L-L Percent in 10ths 0 to ±1000 1426 ➁ Maximum Volt. Unbalance, Ph. A Percent in 10ths 0 to ±1000 1427 ➁ Maximum Volt. Unbalance, Phase B Percent in 10ths 0 to ±1000 1428 ➁ Maximum Volt. Unbalance, Phase C Percent in 10ths 0 to ±1000 1429 ➁ Maximum Volt. Unbalance, Worst L-N Percent in 10ths 0 to ±1000 1430 ➁ Reserved 1431 ➁ Maximum True Power Factor, Ph. A In 1000ths -100 to +1000 to +100 1432 ➁ Maximum True Power Factor, Ph. B In 1000ths -100 to +1000 to +100 1433 ➁ Maximum True Power Factor, Ph. C In 1000ths -100 to +1000 to +100 1434 ➁ Maximum True Power Factor, Total In 1000ths -100 to +1000 to +100 1435 ➁ Reserved 1436 ➁ Reserved

➀ These registers can be used with POWERLOGIC, Modbus, or Jbus protocols. Although POWERLOGIC

and Jbus protocols use a zero-based register addressing convention and Modbus uses a one-based register addressing convention, the power meter, when configured for Modbus communications,

automatically compensates

30,000 or 40,000 offset can be used (e.g., Current, Phase A = 31,003 or 41,003).

➁ PM-650 only.

for the Modbus offset of one. Regard all registers as holding registers where a

Power Meter Bulletin No. 3020IM9503R6/98 Appendix F—Register List December 1998

Reg. No. ➀ Register Name Units Range

1437 ➁ Reserved 1438 ➁ Reserved 1439 ➁ Maximum Real Power, Phase A kW/Scale Factor E 0 to ±32,767 1440 ➁ Maximum Real Power, Phase B kW/Scale Factor E 0 to ±32,767 1441 ➁ Maximum Real Power, Phase C kW/Scale Factor E 0 to ±32,767 1442 ➁ Maximum Real Power, Total kW/Scale Factor E 0 to ±32,767 1443 ➁ Maximum Reactive Power, Phase A kVAr/Scale Factor E 0 to ±32,767 1444 ➁ Maximum Reactive Power, Phase B kVAr/Scale Factor E 0 to ±32,767 1445 ➁ Maximum Reactive Power, Phase C kVAr/Scale Factor E 0 to ±32,767 1446 ➁ Maximum Reactive Power, Total kVAr/Scale Factor E 0 to ±32,767 1447 ➁ Maximum Apparent Power, Phase A kVA/Scale Factor E 0 to ±32,767 1448 ➁ Maximum Apparent Power, Phase B kVA/Scale Factor E 0 to ±32,767 1449 ➁ Maximum Apparent Power, Phase C kVA/Scale Factor E 0 to ±32,767 1450 ➁ Maximum Apparent Power, Total kVA/Scale Factor E 0 to ±32,767 1451 ➁ Maximum THD/thd Current, Phase A Percent in 10ths 0 to 10,000 1452 ➁ Maximum THD/thd Current, Phase B Percent in 10ths 0 to 10,000 1453 ➁ Maximum THD/thd Current, Phase C Percent in 10ths 0 to 10,000 1454 ➁ Reserved 1455 ➁ Maximum THD/thd Voltage, Phase A Percent in 10ths 0 to 10,000 1456 ➁ Maximum THD/thd Voltage, Phase B Percent in 10ths 0 to 10,000 1457 ➁ Maximum THD/thd Voltage, Phase C Percent in 10ths 0 to 10,000 1458 ➁ Reserved 1459 ➁ Reserved 1600– Unused

1616

➀ These registers can be used with POWERLOGIC, Modbus, or Jbus protocols. Although POWERLOGIC

and Jbus protocols use a zero-based register addressing convention and Modbus uses a one-based register addressing convention, the power meter, when configured for Modbus communications,

automatically compensates

30,000 or 40,000 offset can be used (e.g., Current, Phase A = 31,003 or 41,003).

➁ PM-650 only.

for the Modbus offset of one. Regard all registers as holding registers where a

Bulletin No. 3020IM9503R6/98 Power Meter December 1998 Appendix F—Register List

Reg. No. ➀ Register Name Units Range ENERGY VALUES ➁

Accumulated Energy

1617– Apparent Energy VAH 0 to 9,999,999,999,999,999 1620 3-Phase Total

1621– Real Energy WH 0 to +/-9,999,999,999,999,999 1624 3-Phase Total

1625– Reactive Energy VArH 0 to +/-9,999,999,999,999,999 1628 3-Phase Total

1629– Unused 1663

DEMAND VALUES ➂ Current Demand

1700 Unused 1701 Present Current Amps/Scale 0 to 32,767

Demand Phase A Factor A 1702 Present Current Amps/Scale 0 to 32,767

Demand Phase B Factor A 1703 Present Current Amps/Scale 0 to 32,767

Demand Phase C Factor A 1704 Present Demand Amps/Scale 0 to 32,767

Neutral Current Factor A 1705– Unused

1708 1709 Peak Current Amps/Scale 0 to 32,767

Demand Phase A Factor A 1710 Peak Current Amps/Scale 0 to 32,767

Demand Phase B Factor A 1711 Peak Current Amps/Scale 0 to 32,767

Demand Phase C Factor A 1712 Peak Current Amps/Scale 0 to 32,767

Neutral Current Factor A 1730 Unused

➀ These registers can be used with POWERLOGIC, Modbus, or Jbus protocols. Although POWERLOGIC

and Jbus protocols use a zero-based register addressing convention and Modbus uses a one-based register addressing convention, the power meter, when configured for Modbus communications,

automatically compensates

30,000 or 40,000 offset can be used (e.g., Current, Phase A = 31,003 or 41,003).

➁ Each energy is kept in 4 registers, modulo 10,000 per register. ➂ Demand Values available in PM-620 and PM-650 only.

for the Modbus offset of one. Regard all registers as holding registers where a

Power Meter Bulletin No. 3020IM9503R6/98 Appendix F—Register List December 1998

Reg. No. ➀ Register Name Units Range Power Demand ➁

1731 Present kW/Scale 0 to +/–32,767

Real Power Factor E Demand, 3-Phase Total

1732 Present kVAr/Scale 0 to +/–32,767

Reactive Power Factor E Demand, 3-Phase Total

1733 Present kVA/Scale 0 to 32,767

Apparent Power Demand Factor E 3-Phase Total

1734 Peak Real kW/Scale 0 to +/–32,767

Power Demand, Factor E 3-Phase Total

1735 Average Percent –100 to +1000

Power Factor, in 1000ths to +100 @ Peak Real

1736– Unused 1737

1738 Peak Reactive kVar/Scale 0 to +/–32,767

Power Demand Factor E 3-Phase Total

1739 Average Percent –100 to +1000

Power Factor in 1000ths to +100 @ Peak Reactive

1740– Unused 1741

1742 Peak kVA/Scale 0 to 32,767

Apparent Power Factor E Demand, 3-Phase Total

1743 Average Percent –100 to +1000

Power Factor in 1000ths to +100

@ Peak Apparent 1744 Unused 1745 Unused

➀ These registers can be used with POWERLOGIC, Modbus, or Jbus protocols. Although POWERLOGIC

and Jbus protocols use a zero-based register addressing convention and Modbus uses a one-based register addressing convention, the power meter, when configured for Modbus communications,

automatically compensates

30,000 or 40,000 offset can be used (e.g., Current, Phase A = 31,003 or 41,003).

➁ Reactive Demand may be calculated either using the fundamental only (default) or using total harmonics,

user selectable.

for the Modbus offset of one. Regard all registers as holding registers where a

PowerLogic PM-600, PM-620, PM-650 User Manual

Specifications and Main Features

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User Manual