Eastron SDM120CTM User Manual

Eastron SDM120-CTM User Manual
Zhejiang Eastron Electronic Co.,Ltd. Tel: 0086-573-83698881 Fax: 0086-573-83698883
Add: No.1369 Chengnan Road, Jiaxing, Zhejiang, 314001, China. Web: www.eastron.com.cn Email: sales@eastrongroup.com
SDM120CTM
Single-Phase Multifunction DIN Rail Meter
 Measures kWh, kVArh, kW, kVAr, kVA, PF, Hz, dmd, V, A, etc.
 Bi-directional measurement IMP & EXP
 Two pulse outputs
 RS485 Modbus
 Din rail mounting 35mm
 1A or 5A CT connection
 Better than Class 1 accuracy
User Manual V1.2

Eastron SDM120CTM Specifications

General

Rated Voltage (Un)	230V AC
Base Current (Ib)	5A
Maximum Current (Imax)	100A
Accuracy	Class 1
Communication	RS485
Display	LCD
Impulse Voltage	4kV
Operating Temperature	-25°C to +55°C
Storage Temperature	-40°C to +70°C
Mounting	DIN rail
Width	1 module (17.5 mm)
Backlight	No
MID Certified	Yes
Type	Single-phase energy meter
Current Range	0.0 - 100A
Starting Current (Ist)	0.004A
Frequency	50Hz
Protocol	MODBUS
Power Consumption	< 2W

Summary

Part 1 Specification

General Specifications

Details voltage, current, power, frequency, and display specifications.

Accuracy

Specifies accuracy classes for voltage, current, power factor, and energy.

Environment

Lists operating temperature, storage, transportation, and reference temperature ranges.

Part 2 Operation

Output and Communication

Describes pulse outputs, RS485 Modbus RTU parameters, and communication settings.

Mechanical Specifications

Provides DIN rail dimensions, mounting type, ingress protection, and material.

Display and Navigation

Explains meter initialization, self-checking, and how to scroll through displayed measurements.

Set-up Mode and Configuration

Details how to enter set-up mode and configure CT1 primary current.

Wiring Diagram and Dimensions

Illustrates the wiring connections and provides overall meter dimensions.

Installation Guide

Provides visual guidance for installing the meter on a DIN rail.