PowerLogic PM-620 User Manual

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.... 36
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

PowerLogic PM-620 Specifications

General

Brand	PowerLogic
Model	PM-620
Category	Measuring Instruments
Language	English