CET PMC-230 User manual

PMC-230
Single-Phase Multifunction Meter
User Manual
Version: V1.0
June 29, 2020

I
This manual may not be reproduced in whole or in part by any means without the express written
permission from CET Electric Technology (CET).
The information contained in this Manual is believed to be accurate at the time of publication; however,
CET assumes no responsibility for any errors which may appear here and reserves the right to make
changes without notice. Please consult CET or your local representative for latest product
specifications.
Standards Compliance
DANGER
This symbol indicates the presence of danger that may result in severe injury or death and permanent
equipment damage if proper precautions are not taken during the installation, operation or
maintenance of the device.
CAUTION
This symbol indicates the potential of personal injury or equipment damage if proper precautions are
not taken during the installation, operation or maintenance of the device.

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II
DANGER
Failure to observe the following instructions may result in severe injury or death
and/or equipment damage.
➢
Installation, operation and maintenance of the meter should only be performed by
qualified, competent personnel that have the appropriate training and experience
with high voltage and current devices. The meter must be installed in accordance
with all local and national electrical codes.
➢
Ensure that all incoming AC power and other power sources are turned OFF before
performing any work on the meter.
➢
Before connecting the meter to the power source, check the label on top of the
meter to ensure that it is equipped with the appropriate power supply, and the
correct voltage and current input specifications for your application.
➢
During normal operation of the meter, hazardous voltages are present on its
terminal strips and throughout the connected potential transformers (PT) and
current transformers (CT). PT and CT secondary circuits are capable of generating
lethal voltages and currents with their primary circuits energized. Follow standard
safety precautions while performing any installation or service work (i.e. removing
PT fuses, shorting CT secondaries, …etc).
➢
Do not use the meter for primary protection functions where failure of the device
can cause fire, injury or death. The meter should only be used for shadow protection
if needed.
➢
Under no circumstances should the meter be connected to a power source if it is
damaged.
➢
To prevent potential fire or shock hazard, do not expose the meter to rain or
moisture.
➢
Setup procedures must be performed only by qualified personnel familiar with the
instrument and its associated electrical equipment.
➢DO NOT open the instrument under any circumstances.

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III
Limited warranty
➢
CET Electric Technology (CET) offers the customer a minimum of 12-month functional
warranty on the meter for faulty parts or workmanship from the date of dispatch from
the distributor. This warranty is on a return to factory for repair basis.
➢
CET does not accept liability for any damage caused by meter malfunctions. CET accepts
no responsibility for the suitability of the meter to the application for which it was
purchased.
➢
Failure to install, set up or operate the meter according to the instructions herein will
void the warranty.
➢
Only CET’s duly authorized representative may open your meter. The unit should only
be opened in a fully anti-static environment. Failure to do so may damage the electronic
components and will void the warranty.

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Glossary
COM / Comm. = Communication
CT = Current Transformer
DI / DO = Digital Input / Output
FP = Front Panel
Imp. / Exp. = Import / Export
MB = Mega Byte
MBPW = Modbus Password
NER = National Electricity Rules
NMI = National Measurement Institute
PF = Power Factor
PPS = Pulse Per Second
RMS = Root Mean Square
RTC = Real-Time Clock
SCADA = Supervisory Control And Data Acquisition
SOE = Sequence of Events
T1 to T4 = Tariff 1 to Tariff 4
THD = Total Harmonics Distortion
TOU = Time of Use
UL = Underwriters Laboratories Inc.
WAGES = Water, Air, Gas, Electricity and Steam

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Table of Contents
Chapter 1 Introduction ........................................................................................................................................... 1
1.1 Overview.......................................................................................................................................................1
1.2 Features ........................................................................................................................................................1
1.3 PMC-230’s application in Power and Energy Management System..............................................................2
1.4 Getting More Information ............................................................................................................................2
Chapter 2 Installation.............................................................................................................................................. 3
2.1 Appearance...................................................................................................................................................3
2.2 Terminal Dimensions ....................................................................................................................................3
2.3 Unit Dimensions............................................................................................................................................4
2.4 Installations...................................................................................................................................................4
2.5 RS-485 Wiring ...............................................................................................................................................5
2.6 Digital Input ..................................................................................................................................................5
2.7 Pulse Output.................................................................................................................................................5
Chapter 3 Front Panel............................................................................................................................................. 6
3.1 LCD Display ...................................................................................................................................................6
3.1.1 LED Pulse Output...................................................................................................................................6
3.1.2 LCD Display Symbols ..............................................................................................................................6
3.2 LCD Testing....................................................................................................................................................6
3.3 Display Modes...............................................................................................................................................6
3.4 Data Display ..................................................................................................................................................7
3.5 Setup Configuration via the Front Panel.......................................................................................................8
3.5.1 Function of buttons ...............................................................................................................................8
3.5.2 Setup Menu ...........................................................................................................................................9
3.5.3 Configurations......................................................................................................................................10
Chapter 4 Applications.......................................................................................................................................... 11
4.1 Inputs and Outputs.....................................................................................................................................11
4.1.1 Digital Inputs........................................................................................................................................11
4.1.2 Energy Pulse / 1 PPS Output................................................................................................................11
4.1.3 Disconnect Relay..................................................................................................................................11
4.2 Metering .....................................................................................................................................................11
4.2.1 Basic Measurements............................................................................................................................11
4.2.2 Energy Measurements.........................................................................................................................11
4.2.3 Demands..............................................................................................................................................11
4.2.4 Harmonics............................................................................................................................................12
4.3 Logs.............................................................................................................................................................12
4.3.1 Monthly Energy Log.............................................................................................................................12
4.3.2 SOE Log................................................................................................................................................13
4.3.3 Data Recorder Log................................................................................................................................13
4.4 Time of Use (TOU).......................................................................................................................................14
Chapter 5 Modbus Map........................................................................................................................................ 15
5.1 Basic Measurements...................................................................................................................................15
5.2 Real Time Energy Measurements ...............................................................................................................16
5.3 DI Pulse Counter .........................................................................................................................................16
5.4 Harmonic Measurement.............................................................................................................................16
5.5 Demand Measurements .............................................................................................................................16
5.5.1 Present Demand ..................................................................................................................................16
5.5.2 Max. Demand of This Month (Since Last Reset) ..................................................................................16
5.5.3 Max. Demand of Last Month (Before Last Reset)................................................................................17
5.5.4 Demand Data Structure .......................................................................................................................17
5.6 Logs.............................................................................................................................................................17
5.6.1 Monthly Energy Log.............................................................................................................................17
5.6.2 Data Recorder Log................................................................................................................................18
5.6.3 SOE Log................................................................................................................................................18
5.7 Device Setup...............................................................................................................................................20
5.7.1 Basic Setup...........................................................................................................................................20

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5.7.2 I/O Setup..............................................................................................................................................21
5.7.3 Communication Setup .........................................................................................................................21
5.8 TOU Setup...................................................................................................................................................21
5.8.1 Basic.....................................................................................................................................................21
5.8.2 Seasons................................................................................................................................................22
5.8.3 Daily Profile..........................................................................................................................................22
5.8.4 Alternate Days......................................................................................................................................23
5.9 Data Recorder Setup...................................................................................................................................23
5.10 Time..........................................................................................................................................................24
5.11 Remote Control.........................................................................................................................................25
5.12 Clear/Reset Control...................................................................................................................................25
5.13 Meter Information....................................................................................................................................25
Appendix A – Technical Specification.................................................................................................................... 27
Appendix B – Standards of Compliance................................................................................................................ 28
Appendix C – Ordering Guide ............................................................................................................................... 29
Contact us ............................................................................................................................................................ 30

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Chapter 1 Introduction
This manual explains how to use the PMC-230 Single-Phase Multifunction Meter.
This chapter provides an overview of the PMC-230 meter and summarizes many of its key features.
1.1 Overview
The PMC-230 Single-Phase Multifunction Meter is CET’s latest offer for the low voltage energy metering market
featuring DIN rail mount, compact construction, 63A direct input with an internal UC3 Disconnect Relay
compliant with Australia National Electricity Rules (NER) schedule 7.5 for the ability to disconnect/re-connect
from the supply. The PMC-230 also complies with the IEC 62053-21 Class 1 kWh Accuracy Standard and has
received the certificate of approval from the National Measurement Institute (NMI) of Australia for compliance
with the M6-1 Electricity Meters, Part 1: Metrological and Technical Requirements. The PMC-230 provides 4MB
Log Memory for Data Recording, 3xDI for Status Monitoring or Pulse Counting, 1xLED Pulse Indicator and 1xSS
Pulse Output for Energy Pulsing. Further, the standard RS-485 port supporting Modbus RTU protocol with
password protection allows the PMC-230 to become a vital component of an intelligent, multifunction
monitoring solution for any Energy Management Systems.
Following is a list of typical applications for the PMC-230:
▪DIN rail mount energy metering
▪Industrial, Commercial and Utility Substation Metering
▪Building, Factory and Process Automation
▪Sub-metering and Cost Allocation
▪NMI compliant Energy Management
Contact CET Technical Support at [e-mail] should you require further assistance with your
application.
1.2 Features
Ease of Use
▪Easy to read LCD for both data viewing and configuration
▪Two LED indicators for Energy Pulsing and Disconnect Relay status
▪Password-protected setup via Front Panel or free PMC Setup software
▪Easy installation with DIN rail mounting, no tools required
Basic Measurements
▪IEC 62053-21 Class 1 and NMI M6-1 Certified by UL
▪Direct Input up to 63A without external CT
▪U, I, P, Q, S, PF, Frequency and Operating Time
▪kWh and kvarh Imp./Exp and kVAh
▪Two TOU schedules, each providing
•4 Seasons
•12 Daily Profiles, each with 8 Periods in 15-minute interval
•30 Holidays or Alternate Days
•4 Tariffs, each providing kWh/kvarh Imp./Exp., kVAh
▪Demands and Max. Demands for U, I, P/Q/S with Timestamp for This Month & Last Month (or Since Last
Reset & Before Last Reset)
▪U and I THD
▪DI Counters, Front Panel & Communication Programming Counters
Disconnect Relay (Internal)
▪UC3 compliant Disconnect Relay that can be activated locally from the Front Panel or remotely via
communications
Energy Pulse Outputs
▪1 LED Energy Pulse Output on the Front Panel
▪1 Solid State Relay Energy Pulse Output

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Digital Inputs
▪3 channels for external status monitoring and pulse counting
▪Self-excited, internally wetted at 12VDC
▪1000Hz sampling
Data Recorder
▪One Data Recorder Log of 16 parameters
▪Recording Interval from 1 second to 40 days.
▪Configurable Depth (max. 65535) and Recording Offset
▪4MB Log Memory, capable of recording 16 parameters at 5-minute interval for 6 months
▪Available parameters: U, I, P, Q, S, PF, Freq., kWh Imp./Exp., kvarh Imp./Exp., Demands and Max. Demands
for U, I, P/Q/S Total, DI Pulse Counters and Relay Status
Monthly Energy Log
▪12 historical monthly logs of kWh/kvarh Imp./Exp. and kVAh as well as kWh/kvarh Imp./Exp. and kVAh per Tariff
SOE Log
▪32 events time-stamped to ±1ms resolution
Communications
▪Optically isolated RS-485 port at 1200 to 19,200 bps
▪Modbus RTU protocol with configurable password protection
Real-time Clock
▪Battery backed RTC @ 6ppm (≤0.5s/day)
▪Battery Life > 10 years
System Integration
▪Supported by our PecStar® iEMS and PMC Setup
▪Easy integration into other Automation or SCADA systems via Modbus RTU protocol
1.3 PMC-230’s application in Power and Energy Management System
Figure 1-1 Typical Application
1.4 Getting More Information
Additional information is available from CET via the following sources:
▪Visit www.cet-global.com
▪Contact your local representative
▪Contact CET directly via email or telephone

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Chapter 2 Installation
2.1 Appearance
Figure 2-1 Appearance
2.2 Terminal Dimensions
Figure 2-2 Terminal Dimensions
Caution
Installation of the PMC-230 should only be performed by qualified, competent personnel that have the
appropriate training and experience with high voltage and current devices. The meter must be installed
in accordance with all local and national electrical codes.
During the operation of the meter, hazardous voltages are present at the input terminals. Failure to
observe precautions can result in serious or even fatal injury and equipment damage.