CET PMC-T402 Manual de usuario
PMC-T402
Temperature & Iresidual Monitor
User Manual
Version: V1.0
November 09, 2017
CET Inc.
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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
the latest product specifications.
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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DANGER
Failure to observe the following instructions may result in severe injury or
death and/or equipment damage.
Installation, operation and maintenance of the device should only be
performed by qualified, competent personnel that have the appropriate
training and experience with high voltage and current devices. The device 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 device.
Before connecting the device to the power source, check the label on top of
the device 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 device, 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 device for primary protection functions where failure of the
device can cause fire, injury or death. The device should only be used for
shadow protection if needed.
Under no circumstances should the device be connected to a power source if
it is damaged.
To prevent potential fire or shock hazard, do not expose the device 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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Limited warranty
CET offers the customer a minimum of 12-month functional warranty on the
device 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 device malfunctions. CET
accepts no responsibility for the suitability of the device to the application for
which it was purchased.
Failure to install, set up or operate the device according to the instructions herein
will void the warranty.
Only CET’s duly authorized representative may open your device. 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.
CET Inc.
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Table of Contents
Chapter 1 Introduction........................................................................................................................ 7
1.1 Overview............................................................................................................................... 7
1.2 Features ................................................................................................................................7
1.3 Getting more information ..................................................................................................... 8
Chapter 2 Installation..........................................................................................................................9
2.1 Appearance...........................................................................................................................9
2.2 Dimensions .........................................................................................................................10
2.2.1 Main Unit.................................................................................................................10
2.2.2 Terminal...................................................................................................................10
2.2.3 Residual Current CTs ................................................................................................11
2.2.4 PT100.......................................................................................................................12
2.3 Mounting ............................................................................................................................ 12
2.4 RS-485 Wiring .....................................................................................................................14
2.5 Digital Output Wiring .......................................................................................................... 14
2.6 Residual Current Input Wiring .............................................................................................14
2.7 RTD Input Wiring.................................................................................................................15
2.8 Power Supply Wiring...........................................................................................................15
Chapter 3 Front Panel .......................................................................................................................16
3.1 LED Indicator....................................................................................................................... 16
3.2 Buttons ...............................................................................................................................16
3.3 LED Display .........................................................................................................................17
3.3.1 LED Display Symbols.................................................................................................17
3.3.2 LED Testing...............................................................................................................17
3.3.3 Default Display .........................................................................................................17
3.3.4 Data Display .............................................................................................................18
3.3.5 SOE Display ..............................................................................................................18
3.4 Setup Configuration ............................................................................................................ 19
3.4.1 Making Setup Changes.............................................................................................19
3.4.2 Setup Menu .............................................................................................................20
3.4.3 Configuration ...........................................................................................................21
Chapter 4 Applications......................................................................................................................23
4.1 Condition Monitoring..........................................................................................................23
4.1.1 Residual Current Monitoring ....................................................................................23
4.1.2 Temperature Alarm ..................................................................................................23
4.2 Digital Output ..................................................................................................................... 25
4.3 SOE Log...............................................................................................................................25
Chapter 5 Modbus Register Map....................................................................................................... 26
5.1 Basic Measurements ...........................................................................................................26
5.2 SOE Log...............................................................................................................................27
5.3 Device Setup .......................................................................................................................28
5.4 Time.................................................................................................................................... 29
5.5 Remote Control...................................................................................................................30
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5.6 Device Information..............................................................................................................30
Appendix A Technical Specifications.................................................................................................. 31
Appendix B Standards of Compliance................................................................................................32
Appendix C Ordering Guide...............................................................................................................33
Contact us.........................................................................................................................................34
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Chapter 1 Introduction
This manual explains how to use the PMC-T402 Temperature & Iresidual Monitor.
This chapter provides an overview of the PMC-T402 and summarizes many of its key features.
1.1 Overview
The PMC-T402 is CET’s latest offer for the Temperature (RTD) and Residual Current monitoring for the
Commercial and Industrial markets. Housed in a compact form factor measuring only
72(L)×72(H)×87.8(D)mm, the PMC-T402 can be used as a stand-alone device that offers real-time
monitoring and alarming of Residual Current and Temperature with its LED display, Front Panel buttons,
1xDO for Alarm Output or General Purpose Control and a built-in Alarm Buzzer. With the standard RS-
485 port and Modbus RTU protocol support, the PMC-T402 becomes a vital component of an
intelligent, centralized Condition Monitoring.
Intelligent Electrical Fire and Condition Monitoring for Industrial or Commercial facilities
Industrial and Commercial Electrical Power System
AC Low Voltage Distribution System
Condition monitoring of electrical equipment
1.2 Features
Ease of use
Bright 2-line LED display with high visibility for Temperature and Residual Current measurements
LED Indicators for Run, Fault, Warning, Alarm, Comm. Activities, Measurement Channel and Unit
indicators
Built-in Alarm Buzzer
Password-protected setup via front panel or free PMC Setup software
Panel or DIN Rail (with adapter) Mount
Support Firmware Upgrade over Communications
Residual Current Measurement
4 channels Residual Current Input (CT not included)
Two Setpoint Alarm Levels between 20 and 1000mA
Temperature Measurement
4 channels RTD Input (PT100 sensor not included)
Two Setpoint Alarm levels between 45°C and 140°C
SOE Log
64 events time-stamped to ±1ms resolution
Setup changes, Setpoint Alarms, Power Reset …etc.
Digital Output
1 Form A mechanical DO (3A @ 250VAC or 30VDC)
Can be used for Alarm Output or General Purpose Control
Communications
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Chapter 2 Installation
2.1 Appearance
Figure 2-1 Appearance
Caution
Installation of the PMC-T402 should only be performed by qualified, competent personnel
that have the appropriate training and experience with high voltage and current devices.
The monitor must be installed in accordance with all local and national electrical codes.
During the operation of the monitor, hazardous voltages are present at the input terminals.
Failure to observe precautions can result in serious or even fatal injury and equipment
damage.
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2.2 Dimensions
2.2.1 Main Unit
Figure 2-2 Main Unit Dimensions
2.2.2 Terminal
Figure 2-3 Terminal Dimensions
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