Eastron SDM220-MT User guide

Eastron SDM220-MT User Manual

- 1 -

SDM220-MT

Single-Phase Multi-Tariff Energy Meter

 Measures 4 TARIFFS’ kWh/time.

And Kvarh, KW, Kvar, KVA, PF, Hz, dmd, V, A, etc.

 Bi-directional measurement IMP & EXP

 Two pulse outputs

 RS485 Modbus

 Din rail mounting 35mm

 100A direct connection

 Better than Class 1 / B accuracy

User Manual V1.8

Jiaxing Eastron Electronic Instruments Co.,Ltd. Tel: [phone] 83698882 Fax: [phone]
Address: No.1369 Chengnan Road, Jiaxing, Zhejiang, 314001, China. Web:

www.eastron.com.cn Email: [e-mail]

2016

Eastron SDM220-MT User Manual

- 2 -

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 communication port for remote reading and monitoring. Bi-directional energy

measurement makes the unit a good choice for solar PV energy metering.

PART 1

General Specifications

Voltage AC (Un) 230V

Voltage Range 176~276V AC

Base Current (Ib) 5A

Max. Current (Imax) 100A

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 99999.99kWh

Specification

Tariff specifications

Tariff number 4

Time segments 10

Clock accuracy ≤0.5S (every 24 hours)

Battery Voltage 3.6V DC, ≥1.2Ah

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

Jiaxing Eastron Electronic Instruments Co.,Ltd. Tel: [phone] 83698882 Fax: [phone]
Address: No.1369 Chengnan Road, Jiaxing, Zhejiang, 314001, China. Web:

www.eastron.com.cn Email: [e-mail]

Eastron SDM220-MT User Manual

- 3 -

Active energy Class 1 IEC62053-21

Class B EN50470-3

Reactive energy 1% of range maximum

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 36x90x62 (WxHxD) DIN 43880

Mounting DIN rail 35mm

Sealing IP51 (indoor)

Material self-extinguishing UL94V-0

Jiaxing Eastron Electronic Instruments Co.,Ltd. Tel: [phone] 83698882 Fax: [phone]
Address: No.1369 Chengnan Road, Jiaxing, Zhejiang, 314001, China. Web:

www.eastron.com.cn Email: [e-mail]

Eastron SDM220-MT User Manual

- 4 -

Item

Descriptions

1

7 digits used to display measured values or RTC

2

Total value

3

Tariff information

4

Import information, Export information

5

Max. Demand for Power or Current

6

Pulse output 1 and Pulse output 2

7

Measurement units

8

PF = power factor Hz = frequency

9

Bar display of Power

10

Communication indicator

11

Time information

12

Low battery warning

13

Lock symbol

LCD display

PART 2

Initialization Display

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

Full screen 

Scroll display by Button

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.

Operation

software version  Modbus ID  Baud rate  total kWh

Jiaxing Eastron Electronic Instruments Co.,Ltd. Tel: [phone] 83698882 Fax: [phone]
Address: No.1369 Chengnan Road, Jiaxing, Zhejiang, 314001, China. Web:

www.eastron.com.cn Email: [e-mail]

Eastron SDM220-MT User Manual

- 5 -

Page

Display

Descriptions

1

Total active energy

Example:70.00kWh

2 Import(input) active energy

Example: 50.00kWh

3 Export(output)active energy

Example: 20.00kWh

4 T1 active energy

Example: 0.00kwh

5

T2 active energy

Example: 0.00kwh

The display order by scroll button :

Total kWh import kWhexport kWh T1 kwhT2 kwhT3 kwhT4 kwhtotal kvarh

import kVarh export kVarhT1 kvarhT2 kvarh T3 kvarhT4 kvarh Max. power demand

T1 Max. power demand T2 Max. power demand T3 Max. power demand

T4 Max. power demand voltage currentW Var VA power factor  frequency 

pulse constant Modbus ID  baudratedatetimetime segment 1time segment 2

time segment 3time segment 4time segment 5time segment 6time segment 7

time segment 8time segment 9time segment 10

Jiaxing Eastron Electronic Instruments Co.,Ltd. Tel: [phone] 83698882 Fax: [phone]
Address: No.1369 Chengnan Road, Jiaxing, Zhejiang, 314001, China. Web:

www.eastron.com.cn Email: [e-mail]

Eastron SDM220-MT User Manual

- 6 -

6 T3 active energy

Example: 0.00kwh

7 T4 active energy

Example: 0.00kwh

8 Total reactive energy

Example: 10.00kVarh

9 Import(input)reactive energy

Example: 5.00kVarh

10 Export(output)reactive energy

Example: 5.00kVarh

11 T1 reactive energy

Example: 0.00kVarh

12

T2 reactive energy

Example: 0.00kVarh

Jiaxing Eastron Electronic Instruments Co.,Ltd. Tel: [phone] 83698882 Fax: [phone]
Address: No.1369 Chengnan Road, Jiaxing, Zhejiang, 314001, China. Web:

www.eastron.com.cn Email: [e-mail]

Eastron SDM220-MT User Manual

- 7 -

13 T3 reactive energy

Example: 0.00kVarh

14 T4 reactive energy

Example: 0.00kVarh

15

Max Power Demand

Example: 6930W

16 T1 Max. Power Demand

Example:0 W

17 T2 Max. Power Demand

Example:0 W

18 T3 Max. Power Demand

Example:0 W

19

T4 Max. Power Demand

Example:0 W

Jiaxing Eastron Electronic Instruments Co.,Ltd. Tel: [phone] 83698882 Fax: [phone]
Address: No.1369 Chengnan Road, Jiaxing, Zhejiang, 314001, China. Web:

www.eastron.com.cn Email: [e-mail]

Eastron SDM220-MT User Manual

- 8 -

20 Voltage

Example: 229.8V

21 Current

Example: 30.156A

22 Active Power

Example: 4700W

23 Reactive Power

Example: 1030Var

24 Apparent power

Example: 4811VA

25 Power factor

Example: 1.000

26

Frequency

Example: 49.99Hz

Jiaxing Eastron Electronic Instruments Co.,Ltd. Tel: [phone] 83698882 Fax: [phone]
Address: No.1369 Chengnan Road, Jiaxing, Zhejiang, 314001, China. Web:

www.eastron.com.cn Email: [e-mail]

Eastron SDM220-MT User Manual

- 9 -

27 Pulse Constant

Example: 1000

28 Modbus Address

Example: 001

29 Baud rate

Example: 9600

30 Date

Format：Day, Month,Year

Example：1st,Jan,2014

31 Time

Format：Hour, Minute, Second

Example: 00:02:39

32 Time segment 1

Format：Hour, Minute, Tariff
Example：00:00, Tariff 1

33

Time segment 2

Format：Hour, Minute, Tariff

Example：02:00 Tariff 2

Jiaxing Eastron Electronic Instruments Co.,Ltd. Tel: [phone] 83698882 Fax: [phone]
Address: No.1369 Chengnan Road, Jiaxing, Zhejiang, 314001, China. Web:

www.eastron.com.cn Email: [e-mail]

Eastron SDM220-MT User Manual

- 10 -

34 Time segment 3

Format：Hour, Minute, Tariff

Example：04:00 Tariff 3

35 Time segment 4

Format：Hour, Minute, Tariff

Example：05:00 Tariff 4

36 Time segment 5

Format：Hour, Minute, Tariff

Example：07:25 Tariff 1

37 Time segment 6

Format：Hour, Minute, Tariff

Example：08:11 Tariff 2

38 Time segment 7

Format：Hour, Minute ,Tariff

Example：15:40 Tariff 3

39 Time segment 8

Format：Hour, Minute, Tariff
Example：17:00 Tariff 4

40

Time segment 9

Format：Hour, Minute, Tariff

Example：10:00 Tariff 1

Jiaxing Eastron Electronic Instruments Co.,Ltd. Tel: [phone] 83698882 Fax: [phone]
Address: No.1369 Chengnan Road, Jiaxing, Zhejiang, 314001, China. Web:

www.eastron.com.cn Email: [e-mail]

Eastron SDM220-MT User Manual

- 11 -

41 Time segment 10

Format：Hour, Minute Tariff

Example：23:00 Tariff 2

Page

Display

Descriptions

The setting is done correctly

The entering information is wrong. The

operation fails.

1 Password

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

confirmation.

Default password: 1000

2 Address ID

Default ID is 001

Range: 001~247

2-1

Press the “Enter” button, the first digit

flash. Press the “Scroll” button to change

the value.

After choose the new address value, the

user need pressing the “Enter” button to

confirm the setting.

Set-up Mode

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

Jiaxing Eastron Electronic Instruments Co.,Ltd. Tel: [phone] 83698882 Fax: [phone]
Address: No.1369 Chengnan Road, Jiaxing, Zhejiang, 314001, China. Web:

www.eastron.com.cn Email: [e-mail]

Eastron SDM220-MT User Manual

- 12 -

3 Baud rate

Default value: 9600bps

Range: 1200, 2400, 4800, 9600bps.

3-1 Press the “Enter” button, the red digit flash.

Press the “Scroll” button to change the

value.

After choose the new baud rate, the user

need pressing the “Enter” button to

confirm the setting.

4 Parity

Default: None

Option：None, Even, Odd

4-1 Press the “Enter” button, the red part flash.

Press the “Scroll” button to change the

option.

After choose the new Parity, the user need

pressing the “Enter” button to confirm the

setting.

5 Pulse Output

Default: kWh

Option ： kWh / KVarh / Imp. Kwh /

Exp.kWh / Imp.kVarh / Exp.kVarh

5-1 Press the “Enter” button, the red part flash.

Press the “Scroll” button to change the

option.

After choose the new Pulse output option,

the user need pressing the “Enter” button

to confirm the setting.

6

Pulse Constant

Default: 1000

Option: 1000 / 100 / 10 / 1

Jiaxing Eastron Electronic Instruments Co.,Ltd. Tel: [phone] 83698882 Fax: [phone]
Address: No.1369 Chengnan Road, Jiaxing, Zhejiang, 314001, China. Web:

www.eastron.com.cn Email: [e-mail]

Eastron SDM220-MT User Manual

- 13 -

6-1 Press the “Enter” button, the red part flash.

Press the “Scroll” button to change the

option.

After choose the new Pulse constant

option, the user need pressing the “Enter”

button to confirm the setting.

7 Pulse duration

Default: 100mS

Option: 200 / 100 / 60ms

7-1 Press the “Enter” button, the red part flash.

Press the “Scroll” button to change the

option.

After choose the new Pulse duration

option, the user need pressing the “Enter”

button to confirm the setting.

8 Demand Integration Time

Default: 15 minutes

Option: 0 / 5 / 10 / 15 / 30 / 60

8-1 Press the “Enter” button, the red part flash.

Press the “Scroll” button to change the

option.

After choose the new DIT option, the user

need pressing the “Enter” button to

confirm the setting.

9 Automatic Scroll Time Interval

Default: 0 S

Option: 0 ~ 30S

9-1

Press the “Enter” button, the red part flash.

Press the “Scroll” button to change the

option.

After choose the new “Scrl” option, the

user need pressing the “Enter” button to

confirm the setting.

Jiaxing Eastron Electronic Instruments Co.,Ltd. Tel: [phone] 83698882 Fax: [phone]
Address: No.1369 Chengnan Road, Jiaxing, Zhejiang, 314001, China. Web:

www.eastron.com.cn Email: [e-mail]

Eastron SDM220-MT User Manual

- 14 -

10 Password set-up

Default: 1000

10-1

Press the “Enter” button, the red part flash.

Press the “Scroll” button to change the

value.

After choose the new password, the user

need pressing the “Enter” button to

confirm the setting.

11 Date set-up

Press the “Enter” button to enter the date

set-up page

11-1

Press the “Scroll” button to change the

value. After choose the new value, the user

need pressing the “Enter” button to

confirm the setting.

Date format: Day ,Month, Year

12 Time set-up

Press the “Enter” button to enter the time

set-up page

12-1

Press the “Scroll” button to change the

value. After choose the new value, the user

need pressing the “Enter” button to

confirm the setting.

Time format: Hour, Minute, Second

Jiaxing Eastron Electronic Instruments Co.,Ltd. Tel: [phone] 83698882 Fax: [phone]
Address: No.1369 Chengnan Road, Jiaxing, Zhejiang, 314001, China. Web:

www.eastron.com.cn Email: [e-mail]

Eastron SDM220-MT User Manual

- 15 -

Wiring diagram

Dimensions

Jiaxing Eastron Electronic Instruments Co.,Ltd. Tel: [phone] 83698882 Fax: [phone]
Address: No.1369 Chengnan Road, Jiaxing, Zhejiang, 314001, China. Web:

www.eastron.com.cn Email: [e-mail]

Eastron SDM220-MT User Manual

- 16 -

Installation

Jiaxing Eastron Electronic Instruments Co.,Ltd. Tel: [phone] 83698882 Fax: [phone]
Address: No.1369 Chengnan Road, Jiaxing, Zhejiang, 314001, China. Web:

www.eastron.com.cn Email: [e-mail]