EET PMC-352-D User Manual

Din-rail dc energy meter

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PMC-352-D
DIN-Rail DC Energy Meter
User Manual
Version: V0.9
March 6, 2024

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Summary of Contents for EET PMC-352-D

  • Page 1 PMC-352-D DIN-Rail DC Energy Meter User Manual Version: V0.9 March 6, 2024...
  • Page 2 CET Electric Technology 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.
  • Page 3 CET Electric Technology 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.
  • Page 4 CET Electric Technology 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.
  • Page 5 CET Electric Technology 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.
  • Page 6: Table Of Contents

    Table of Contents Chapter 1 Introduction ............................1 1.1 Overview ............................... 1 1.2 Features ................................ 1 1.3 PMC-352-D’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 LED Indicators ...............................
  • Page 7: Chapter 1 Introduction

    This chapter provides an overview of the PMC-352-D meter and summarizes many of its key features. 1.1 Overview The PMC-352-D DIN-Rail DC Energy Meter is CET’s latest offer for the low-cost DC metering market. Designed in a compact DIN form factor measuring 36x65x90mm, it is perfect for DC metering application in a space-limited environment.
  • Page 8: Pmc-352-D's Application In Power And Energy Management System

    CET Electric Technology 1.3 PMC-352-D’s application in Power and Energy Management System Figure 1-1 PMC-352-D’s application in Power and Energy Management System 1.4 Getting More Information Additional information is available from CET via the following sources:  Visit www.cet-global.com  Contact your local representative...
  • Page 9: Chapter 2 Installation

    Chapter 2 Installation Caution Installation of the PMC-352-D 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.
  • Page 10: Hall Effect Solid Core Ct Appearances & Specifications

    CET Electric Technology 2.3 Hall Effect Solid Core CT Appearances & Specifications Figure 2-3 Hall Effect Solid Core CT Appearances & Specifications 2.4 CT Adaptor Appearances & Specifications Figure 2-4 CT Adaptor Appearances & Specifications...
  • Page 11: Dimensions

    CET Electric Technology 2.5 Dimensions 2.5.1 Device Dimensions Front View Side View Unit: mm Bottom View Figure 2-5 Device Dimensions 2.5.2 Terminal Dimensions Terminal Terminal Dimensions Wire Size Max. Torque Voltage Input, Digital 5.0kgf.cm/M3.0 1.5mm 2.6mmx3.2mm Input, RS-485 Port (4.3Ib-in) Table 2-2 Terminal Dimensions 2.5.3 NTC Dimensions 2.5.3.1 NTC-104/NTC-1043/NTC-1044...
  • Page 12: Din-Rail Installation

    Move the installation clips at the back of the PMC-352-D downward to the “unlock” position. Align the top of the mounting channel at the back of the PMC-352-D at an angle against the top of the DIN Rail as shown in Figure 2-8 below.
  • Page 13: Rs-485 Wiring

    CET Electric Technology 2.8 RS-485 Wiring The PMC-352-D provides one standard RS-485 port that supports the Modbus RTU protocol. Up to 32 devices can be connected on an RS-485 bus. The overall length of the RS-485 cable connecting all devices should not exceed 1200m.
  • Page 14: Chapter 3 Application

    3.2 Power and Energy 3.2.1 Basic Measurements The PMC-352-D provides the measurements for DC voltage, Residual Current, TC1 to TC4, and 3 x Sub-Meter (SM) DC Current, kW as well as kW Total. All the measurements are available through communications.
  • Page 15: Setpoint

    CET Electric Technology 3.3 Setpoint The PMC-352-D comes standard with 10 user-programmable Setpoints which provide extensive control by allowing a user to initiate an action in response to a specific condition. Typical setpoint applications include alarming, fault detection and power quality monitoring.
  • Page 16: Soe Log

    Setpoint status is stored in the register 0033. 3.4 SOE Log The PMC-352-D’s SOE Log can store up to 16 events such as Power-on, Power-off, Digital Input status changes, Setup changes and Setpoint events in its non-volatile memory. Each event record includes the event classification, its relevant parameter values and a timestamp in ±1 ms resolution.
  • Page 17: Chapter 4 Modbus Map

    This chapter provides a complete description of the Modbus register map (Protocol Version 1.0) for the PMC- 352-D to facilitate the development of 3 party communications driver for accessing information on the PMC- 352-D. For a complete Modbus Protocol Specification, please visit http://www.modbus.org. The PMC-352-D supports the following Modbus functions: Read Holding Registers (Function Code 0x03)
  • Page 18: Energy Measurements

    CET Electric Technology 4.2 Energy Measurements The Energy registers have a maximum value of 1,000,000,000 and will roll over to zero automatically when it is reached. The actual energy value is 0.01 times of the register value. Register Property Description Format Scale Unit...
  • Page 19 CET Electric Technology 2. The return value “01” means DI Inactive /Active (including Setpoint & Diagnosis)/Connection Fault; and the return value “00” means DI Active /Setpoint Return/Connection Restore. 3. The returned Event Value (for SOE Event Classification=Setpoint only) is in Float format, and please refer to Table 4-12 to check the Unit for each parameter.
  • Page 20: Device Setup

    CET Electric Technology Setup Changes via Comm. Preset Energy Value via Comm. Table 4-6 SOE Classification 4.5 Device Setup 4.5.1 Basic Setup Register Property Description Format Range, Default* 6000 SM1 Hall Effect Sensor Primary UINT16 1 to 10,000A, 100* 6001 SM1 Hall Effect Sensor Secondary UINT16 1 to 1,000V (x0.01V), 400*...
  • Page 21: Time Registers

    Iresidual Table 4-11 Setpoint Parameters For the PMC-352-D, the Trigger registers are reserved and the Alarm indicator on the Front Panel would be lit when any Setpoint becomes active. The Setpoint status is stored in the register 0033. 4.5.5 Time Registers There are two sets of Time registers supported by the PMC-352-D –...
  • Page 22: Meter Information

    Feature Code UINT16 See Note 2 Table 4-14 Meter Information Notes: 1. The Meter Model appears in registers 60200 to 60219 and contains the ASCII encoding of the string “PMC-352-D” as shown in the following table. Register Value(Hex) ASCII 60200...
  • Page 23: Appendix A - Technical Specifications

    CET Electric Technology Appendix A - Technical Specifications Voltage Inputs (V+, V-) Voltage (Un) 240VDC Range 100 to 400 VDC Starting Voltage Overload 400V continuous Current Inputs (HALL) Current (In) ±4VDC (for use with 100A Hall Effect Solid Core CT) Range 0.8% to 100% In Overload...
  • Page 24 CET Electric Technology Parameters Accuracy Resolution Voltage ±0.5% 0.001V Current ±0.5% + Hall Effect SCCT 0.001A ±1.0% 0.001kW IEC 62053-41: 2021 Class 1 0.01kWh Residual Current ±0.5% + Hall Effect SCCT 0.1mA Temperature ±1°C 0.1°C...
  • Page 25: Appendix B - Standards Of Compliance

    CET Electric Technology Appendix B - Standards of Compliance Safety Requirements CE LVD 2014 / 35 / EU EN 61010-1: 2010 EN 61010-2-030: 2010 Electrical Safety in Low Voltage Distribution Systems up IEC 61557-12: 2018 to 1000Vac and 1500 Vdc Insulation IEC 60255-5: 2000 AC Voltage: 1.8kV @ 1 minute...
  • Page 26: Appendix C - Ordering Guide

    CET Electric Technology Appendix C - Ordering Guide...
  • Page 27: Contact Us

    CET Electric Technology Contact us CET Electric Technology Inc. Email: support@cet-global.com Web: www.cet-global.com...

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