Eastron SDM120 Modbus Manual de usuario

Eastron SDM120Modbus User Manual

Jiaxing Eastron Electronic Instruments Co.,Ltd. Tel: 0086-573-83698881 83698882Fax: 0086-573-83698883

Address: No.1369 Chengnan Road, Jiaxing, Zhejiang, 314001, China. Web: www.eastron.com.cn email: steven@eastron.com.cn

SDM120Modbus

Single-Phase Multifunction DIN rail Meter

Measures kWh, Kvarh, KW, Kvar, KVA, PF, Hz, dmd, V, A, etc.

Di-directional measurement IMP & EXP

Two pulse outputs

RS485 Modbus

Din rail mounting 17.5mm

45A direct connection

Better than Class 1 / B accuracy

User Manual V2.2

2014

Eastron SDM120Modbus User Manual

Jiaxing Eastron Electronic Instruments Co.,Ltd. Tel: 0086-573-83698881 83698882Fax: 0086-573-83698883

Address: No.1369 Chengnan Road, Jiaxing, Zhejiang, 314001, China. Web: www.eastron.com.cn email: steven@eastron.com.cn

Application

The energy-meters “with a blue back-lighted LCD screen for prefect reading” are used to measure single-phase like

residential, utility and Industrial application. The unit measures and displays various important electrical

parameters, and provide a RS485 communication port for remote reading and monitoring. Bi-directional energy

measurement makes the unit a good choice for solar PV energy metering. The compact design and din rail

installation provides a easy and economical solution for your metering demand.

General Specifications

Voltage AC (Un) 230V

Voltage Range 176~276V AC

Base Current (Ib) 5A

Max. Current (Imax) 45A

Mini Current (Imin) 0.25A

Starting current 0.4% of Ib

Power consumption <2W/10VA

Frequency 50/60Hz(±10%)

AC voltage withstand 4KV for 1 minute

Impulse voltage withstand 6KV-1.2uS wavform

Overcurrent withstand 30Imax for 0.01s

Pulse output rate 1000imp/kWh (default)

100/10/1 imp/kWh/kVarh (configurable)

Display LCD with blue backlit

Max. Reading 99999.9kWh

Accuracy

Voltage 0.5% of range maximum

Current 0.5% of nominal

Frequency 0.2% of mid-frequency

Power factor 1% of Unity

Active power 1% of range maximum

Reactive power 1% of range maximum

Apparent power 1% of range maximum

Active energy Class 1 IEC62053-21

Class B EN50470-3

Reactive energy 1% of range maximum

Eastron SDM120Modbus User Manual

Jiaxing Eastron Electronic Instruments Co.,Ltd. Tel: 0086-573-83698881 83698882Fax: 0086-573-83698883

Address: No.1369 Chengnan Road, Jiaxing, Zhejiang, 314001, China. Web: www.eastron.com.cn email: steven@eastron.com.cn

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 2500m

Warm up time 10s

Installation category CAT II

Mechanical Environment M1

Electromagnetic environment E2

Degree of pollution 2

Output

Pulse Output

The meter provides two pulse outputs. Both pulse outputs are passive type.

Pulse output 1 is configurable. The pulse output can be set to generate pulses to represent total / import/export

kWh or kVarh.

The pulse constant can be set to generate 1 pulse per: 0.001(default) /0.01/0.1/1kWh/kVarh.

Pulse width: 200/100/60ms

Pulse output 2 is non-configurable. It is fixed up with total kWh. The constant is 1000imp/kWh.

RS485 output for Modbus RTU

The meter provides a RS485 port for remote communication. Modbus RTU is the protocol applied. For Modbus

RTU, the following RS485 communication parameters can be configured from the Set-up menu.

Baud rate: 1200, 2400, 4800, 9600

Parity: NONE/EVEN/ODD

Stop bits:1 or 2

Modbus Address: 1 to 247

Mechanics

Din rail dimensions 17.5x119x62 (WxHxD) DIN 43880

Mounting DIN rail 35mm

Sealing IP51 (indoor)

Material self-extinguishing UL94V-0

Eastron SDM120Modbus User Manual

Jiaxing Eastron Electronic Instruments Co.,Ltd. Tel: 0086-573-83698881 83698882Fax: 0086-573-83698883

Address: No.1369 Chengnan Road, Jiaxing, Zhejiang, 314001, China. Web: www.eastron.com.cn email: steven@eastron.com.cn

Initialization Display

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

1 Full Screen

It will last for 3 seconds.

2 Software version

It will last for 3 seconds.

After the self-checking program, the meter display will show the total active energy (kWh)

Scroll Display by button

There is a button on the front of the meter. 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, he needs to press

the scroll button on the front panel.

Click the button, the LCD display will scroll the measurements.

Keep pressing the button for 3 seconds, the meter will get into set-up

mode.

1Total active energy（kWh）

Display format：0000.009999.9910000.0

99999.90000.00

1-1 Import active energy（kWh）

Display format：0000.009999.9910000.0

99999.90000.00

1-2 Export active energy（kwh）

Display format：0000.009999.9910000.0

99999.90000.00

Eastron SDM120Modbus User Manual

Jiaxing Eastron Electronic Instruments Co.,Ltd. Tel: 0086-573-83698881 83698882Fax: 0086-573-83698883

Address: No.1369 Chengnan Road, Jiaxing, Zhejiang, 314001, China. Web: www.eastron.com.cn email: steven@eastron.com.cn

2 Voltage (V)

3 Current (A)

4 Active power (W)

5 Frequency ( F )

6 Power factor ( PF)

7 Modbus Adress ( ID)

Default: 001

8 Baudrate

Default : 2400bps

9 Parity

None/even/odd are optional

Default: none

Eastron SDM120Modbus User Manual

Jiaxing Eastron Electronic Instruments Co.,Ltd. Tel: 0086-573-83698881 83698882Fax: 0086-573-83698883

Address: No.1369 Chengnan Road, Jiaxing, Zhejiang, 314001, China. Web: www.eastron.com.cn email: steven@eastron.com.cn

Set-up Mode

To get into Set-up Mode, the user need keep pressing the button for 3 seconds, the meter LCD will shows “-SET-“.

The user can program the meter parameters by sending correct command via RS485 port.

The protocol is Modbus RTU. For the details. Please look at the “Eastron SDM120C protocol”.

Wiring diagram

1：L-in 2: L-out 3/4: N 5/6/7: PO 2+ / Com / PO 1+ 9/10：RS485 B/A

Dimensions

Eastron SDM120Modbus User Manual

Jiaxing Eastron Electronic Instruments Co.,Ltd. Tel: 0086-573-83698881 83698882Fax: 0086-573-83698883

Address: No.1369 Chengnan Road, Jiaxing, Zhejiang, 314001, China. Web: www.eastron.com.cn email: steven@eastron.com.cn

Installation

35mm

DIN Rai l

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