Eastron SDM72DM User manual

B+G e-tech EASTRON SDM72D-M User Manual V1.5 English version

B+G e-tech GmbH www.eastron-germany.de Seite 1 von 16

Measures active kWh & W.

Resettable partial energy

Bi-directional measurement IMP & EXP

Pulse Output

RS485 Modbus

Din rail mounting 35mm

Direct connection, up to 100A

Better than Class 1/ B accuracy

SDM72D-M

Three Phase Four Wire Energy Meter

User Manual V1.5

2017

B+G e-tech EASTRON SDM72D-M User Manual V1.5 English version

B+G e-tech GmbH www.eastron-germany.de Seite 2 von 16

B+G e-tech EASTRON SDM72D-M User Manual V1.5 English version

B+G e-tech GmbH www.eastron-germany.de Seite 3 von 16

Introduction

The SDM72D-M is digital three phase 4 wire energy meter with a white back-lighted LCD screen for perfect

reading. The unit measures and displays active energy (kWh) and power (W), imported and exported. A resettable

partial energy is provided, so the user can easily check the energy imported and energy exported during a certain

period. SDM72D-M supports max.100A direct connection, saves the cost and avoid the trouble to connect

external CTs, giving the unit a cost-effective and east operation. Built-in interfaces provide pulse and RS485

Modbus RTU outputs. Configuration is password protected.

PART 1 Specification

General Specifications

Voltage AC (Un) 3x230(400)V

Voltage Range 80~120% Un

Base Current (Ib) 10A AC

Max. Current (Imax) 100A AC

Mini Current (Imin) 5% of Ib AC

Starting current 0.4% of Ib

Power consumption <2W/10VA

Frequency 50/60Hz

AC voltage withstand 4KV for 1 minute

Impulse voltage withstand 6KV-1.2uS wavform

Overcurrent withstand 30max 0I for 0.01s

Pulse output rate 1000imp/kWh (Pulse 2)

Display LCD with backlit

Max. Reading 999999.9kWh

Active energy Class 1 IEC62053-21

Class B EN50470-3

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Unit Characteristics

The Unit can measure and display:

Power

Active energy imported and exported

Pulse output indicates real-time energy measurement. An RS485 output allows remote monitoring from another

display or a computer.

RS485 Serial –Modbus RTU

This unit uses an RS485 serial port with Modbus RTU protocol to provide a means of remotely monitoring and

controlling the Unit

Set-up screens are provided for setting up the RS485 port.

Pulse output

The unit provides pulse output for active kWh. The Pulse output is passive type.

The pulse out is fixed up with total kWh. The constant is 1000imp/kWh.

RS485 Output for Modbus RTU

For Modbus RTU, the following RS485 communication parameters can be configured from the Set-up menu:

Baud rate 1200,2400, 4800, 9600

Parity none (default)/odd/even

Stop bits 1 or 2

RS485 network address nnn –3-digit number, 001 to 247

Modbus™ Word order Hi/Lo byte order is set automatically to normal or reverse. It cannot be configured

from the set-up menu.

B+G e-tech EASTRON SDM72D-M User Manual V1.5 English version

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Environment

Operating temperature -25℃to +55℃

Storage and transportation temperature -40℃to +70℃

Reference temperature 23℃±2℃

Relative humidity 0 to 95%, non-condensing

Altitude up to 3000m

Warm up time 10s

Installation category CAT III

Mechanical Environment M1

Electromagnetic environment E2

Degree of pollution 2

Mechanics

Din rail dimensions 72x100x66 (WxHxD) DIN 43880

Mounting DIN rail 35mm

Sealing IP51 (indoor)

Material self-extinguishing UL94V-0

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PART 2 Operation

Initialization Display

When it is powered on, the meter will initialize and do self-checking.

Full Screen

Software Version

Pulse constant

Total active energy(kWh)

Total=Import+ Export

Max read: 999999.9 kWh

B+G e-tech EASTRON SDM72D-M User Manual V1.5 English version

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Scroll display

Buttons function

There are two buttons on the front panel.

>Scroll the display for data checking.

>Changing option at Set-up mode

>Exit the Set-up mode

>Set-up mode entry

>Confirmation

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.

Total active energy(kWh)

Total=Import+ Export

import energy

export energy

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Total partial energy(kWh)

Total=Import+ Export

Import partial energy

export partial energy

Total active power

Import active power

Export active power

Pulse constant

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Modbus Address

Baud Rate

Parity

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Set-up Mode

To get into Set-up Mode, the user need press the “Enter” button for 3 seconds.

Page

Display

Descriptions

Password

To get into Set-up mode, it asks a password

confirmation. Default password: 1000

Use and to enter correct

password.

The entering information is wrong. The operation

fails.

Keep pressing for 3 seconds, the current

selection will flash, use and to change

the Modbus address. Options: 1~247

Keep press for 3s to confirm the selection.

Keep pressing for 3 seconds, the current

selection will flash, use and to change

the Baud rate. Options: 1.2k, 2.4k,4.8k,9.6k

( default )

Keep press for 3s to confirm the selection.

Keep pressing for 3 second, the current

selection will flash, use and to change

the Parity. Options: EVEN,ODD,NONE ( default )

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