Eastron SDM72CT-M User Manual
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Eastron SDM72CT-M User Manual

Eastron SDM72CT-M User Manual

Three phase four wire energy meter
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Eastron SDM72CT-M User Manual
SDM72CT-M
Three Phase Four Wire Energy Meter
Zhejiang Eastron Electronic Co.,Ltd.
Address: No.1369 Chengnan Road, Jiaxing, Zhejiang, 314001, China.
Measures kWh, kVArh, W, Var, VA, PF, Hz, V, A etc.
Bi-directional measurement IMP & EXP
Two pulse outputs
RS485 Modbus
Din rail mounting 35mm
1/5A CT connection
Better than Class 1/ B accuracy
Tel: 0086-573-83698881 83698882
Fax: 0086-573-83698883
Web:
www.eastron.com.cn
User Manual V1.0
2018
Email: sales@eastrongroup.com
- 1 -

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Summary of Contents for Eastron SDM72CT-M

  • Page 1 Eastron SDM72CT-M User Manual SDM72CT-M Three Phase Four Wire Energy Meter Measures kWh, kVArh, W, Var, VA, PF, Hz, V, A etc.  Bi-directional measurement IMP & EXP  Two pulse outputs  RS485 Modbus  Din rail mounting 35mm ...

  • Page 2: Specification

    Eastron SDM72CT-M User Manual Introduction The SDM72CT-M is digital three phase 4 wire energy meter with a white back-lighted LCD screen for perfect reading. The unit measures and displays the characteristics of three phase four wires(3p4w) supply, including voltage, frequency, current, power ,active and reactive energy, imported or exported. Energy is measured in terms of kWh, kVArh.
  • Page 3 Eastron SDM72CT-M User Manual Two pulse output indicates real-time energy measurement. An RS485 output allows remote monitoring from another display or a computer. Current Transformer Primary Current The unit can be configured to operate with CT ratio between primary current and secondary current. The secondary CT has two options: 1A/5A RS485 Serial –...

  • Page 4: Operation

    Eastron SDM72CT-M User Manual Degree of pollution Mechanics Din rail dimensions 72x100x66 (WxHxD) DIN 43880 Mounting DIN rail 35mm Sealing IP51 (indoor) Material self-extinguishing UL94V-0 PART 2 Operation Initialization Display When it is powered on, the meter will initialize and do self-checking.
  • Page 5 Eastron SDM72CT-M User Manual >Set-up mode entry >Confirmation Scroll display After initialization and self-checking program, the meter display the measured values. The default page is total kWh. If the user wants to check other information, please press the scroll button on the front panel.
  • Page 6 Eastron SDM72CT-M User Manual Voltage L1 Voltage L2 Voltage L3 Current L1 Current L2 Current L3 Total active power (W) Active power L1 Zhejiang Eastron Electronic Co.,Ltd. Tel: 0086-573-83698881 83698882 Fax: 0086-573-83698883 - 6 - Address: No.1369 Chengnan Road, Jiaxing, Zhejiang, 314001, China.
  • Page 7 Eastron SDM72CT-M User Manual Active power L2 Active power L3 Total reactive power (VAr) Reactive power L1 Reactive power L2 Reactive power L3 Total apparent power ( VA) Apparent power L1 Zhejiang Eastron Electronic Co.,Ltd. Tel: 0086-573-83698881 83698882 Fax: 0086-573-83698883 - 7 - Address: No.1369 Chengnan Road, Jiaxing, Zhejiang, 314001, China.
  • Page 8 Eastron SDM72CT-M User Manual Apparent power L2 Apparent power L3 Total Power Factor Power Factor L1 Power Factor L2 Power Factor L3 Frequency CT ratio Zhejiang Eastron Electronic Co.,Ltd. Tel: 0086-573-83698881 83698882 Fax: 0086-573-83698883 - 8 - Address: No.1369 Chengnan Road, Jiaxing, Zhejiang, 314001, China.
  • Page 9 Eastron SDM72CT-M User Manual Pulse Constant Modbus Address Baud Rate Parity Set-up Mode To get into Set-up Mode, the user need press the “Enter” button for 3 second. Page Display Descriptions Password To get into Set-up mode, it asks a password confirmation.
  • Page 10 Eastron SDM72CT-M User Manual Keep press for 3s to confirm the selection. Keep pressing for 3 second, the current selection will flash, use to change the Baud rate. Options: 1.2k, 2.4k,4.8k,9.6k ( default ) Keep press for 3s to confirm the selection.
  • Page 11 Eastron SDM72CT-M User Manual Wiring diagram Dimensions Zhejiang Eastron Electronic Co.,Ltd. Tel: 0086-573-83698881 83698882 Fax: 0086-573-83698883 - 11 Address: No.1369 Chengnan Road, Jiaxing, Zhejiang, 314001, China. Web: www.eastron.com.cn Email: sales@eastrongroup.com...

  • Page 12: Modbus Protocol

    Eastron SDM72CT-M User Manual PART 3 Modbus Protocol Input Registers Input registers are used to indicate the present values of the measured and calculated electrical quantities. Each parameter is held in two consecutive 16 big register. The following table details the 3X register address, and the values of the the address bytes within the message.

  • Page 13: Holding Registers

    Eastron SDM72CT-M User Manual 30053 Total system power. Float √ √ √ 30057 Total system volt amps. Float √ √ √ 30061 Total system VAr. Float √ √ √ 30063 Total system power factor (1). Float None √ √ √...
  • Page 14 Eastron SDM72CT-M User Manual get the access and 1 : already got the access read the status of the Write: write correct password to get the access) access (KPPA) Length : 4 byte Data Format : Float Write the network port parity/stop bits for MODBUS Protocol, where: 0 = One stop bit and no parity, default.
  • Page 15 Eastron SDM72CT-M User Manual display Range: 0~30, ( 0 means close scrolling) Length : 4 byte Data Format : Float Default: 0. Unit: min Rang :0~120. ( 0 means the back light will 40061 Time of back light work all the time )

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