Eastron SDM220-Modbus User manual

Eastron SDM220Modbus User Manual
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]
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SDM220-Modbus
Single-Phase Two Module DIN rail Meters
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
100A direct connection
Better than Class 1 / B accuracy
User Manual V1.9
2016

Eastron SDM220Modbus User Manual
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]
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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 Specification
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
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 SDM220Modbus User Manual
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]
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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 2500m
Warm up time 10s
Installation category CAT III
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 36x92x65 (WxHxD) DIN 43880
Mounting DIN rail 35mm
Sealing IP51 (indoor)
Material self-extinguishing UL94V-0

Eastron SDM220Modbus User Manual
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]
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LCD display
Item
Descriptions
1
7 digits used to display measured values or RTC
2
Total value
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
PART 2 Operation
Initialization Display
When it is powered on, the meter will initialize and do self-checking.
Full screen software version Modbus ID Baud rate total kWh
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.
The display order by scroll button :
Total kWhimport kWhexport kWhtotal kVarhimport kVarhexport kVarh
Max. power demandvoltagecurrentWVarVApower factor 
frequency pulse constantModbus ID baudrate.
The display order by scroll button :
Total kWhimport kWhexport kWhtotal kVarhimport kVarhexport kVarh
Max. power demandvoltagecurrentWVarVApower factor 
frequency pulse constantModbus ID baudrate.

Eastron SDM220Modbus User Manual
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]
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Page
Display
Descriptions
1
Total active energy
Example:70.00kWh
2
Import active energy
Example: 50.00kWh
3
Export active energy
Example: 20.00kWh
4
Total reactive energy
Example: 10.00kVarh
5
Import reactive energy
Example: 5.00kVarh
6
Export reactive energy
Example: 5.00kVarh
7
Total max. demand
Example: 6930W

Eastron SDM220Modbus User Manual
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]
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8
Voltage
Example: 229.8V
9
Current
Example: 30.156A
10
Active Power
Example: 4700W
11
Reactive Power
Example: 1030Var
12
Apparent power
Example: 4811VA
13
Power factor
Example: 1.000
14
Frequency
Example: 49.99Hz

Eastron SDM220Modbus User Manual
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]
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15
Pulse Constant
Example: 1000
16
Modbus Address
Example: 001
17
Baud rate
Example: 9600
Set-up Mode
To get into Set-up Mode, the user need press the “Enter” button for 3 second.
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

Eastron SDM220Modbus User Manual
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]
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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.
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

Eastron SDM220Modbus User Manual
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]
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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
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.

Eastron SDM220Modbus User Manual
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]
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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.
10
Password
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.