Eastron SDM320-C User manual

EASTRON SDM320-C User Manual
06-2018 V1.0
SDM320-C
Remote Control Energy Meter
Measures KWh Kvarh, KW, PF, HZ, V, A, etc.
Built-in relay, remote control switch
Alarm system
Rs485 modbus
Din rail mounting 35mm
100A direct connection
Better than class 1 / 0.5s accuracy
USER MANUAL
2018 V1.0

1
EASTRON SDM320-C User Manual
06-2018 V1.0
2018 EASTRON Electronic. All Rights Reserved. www.eastron.com.cn
Introduction
The SDM320-C is a single phase multifunction remote control direct connect meter. It has a
built-in relay, you can remote control turn on or off when you work in front of computer. Besides,
it has alarm system, the relay will open automatically when the parameter reachs the alarm value.
There are 26 types alarm object and alarm value you can set by rs485. SDM320-C measures and
displays the characteristics of single phase two wires (1p2w) supplies, including voltage, current,
frequency, power, active and reactive energy, imported and exported. Energy is measured in
terms of kWh, kvarh. In order to measure energy, the unit requires voltage and current inputs in
addition to the supply required to power the product.
SDM320-C supports max. 100A direct connection, saves the cost and avoid the trouble to connect
external CTs, giving the unit a cost-effective and easy operation. Built-in interfaces provides pulse
and RS485 Modbus RTU outputs. Configuration is password protected.
Unit Characteristics
The Unit can measure and display:
Line voltage
Frequency
Line Currents
Power, maximum power demand and power factor
Active energy imported and exported
Reactive energy imported and exported
The unit has password-protected set-up screens for:
Changing password
Demand Interval Time(DIT)
Pulse Output Duration
Backlit Lasting Time
Display Scroll Time
s
Specifications
Electrical characteristics
Type of measurement
RMS including harmonics on single phase AC system
Measurement
accuracyss
Power
IEC 61557-12 Class 0.5
Active Energy
IEC 62053-22 Class 0.5S, IEC 61557-12 Class 0.5
Reactive Energy
IEC62053-23 Class 2, IEC 61557-12 Class 2
Frequency
±0.2%
Current
±0.5%
Voltage
±0.5%
Power Factor
±0.1%
Data Update Rate
1 second nominal
Power Consumption Per Phase
≤2W/10VA
Max Reading
999999.99kwh/kvarh

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EASTRON SDM320-C User Manual
06-2018 V1.0
2018 EASTRON Electronic. All Rights Reserved. www.eastron.com.cn
Input-Voltage
Operational Voltage
176-276VAC
Un
230/400VAC
Impedance
1M Ω
Frequency Range
50/60H
Input- Current
Basic Current
5（100）A
Operational Current Range
0.4%Ib~Imax
Over Current Withstand
30Imax for 0.01S
Impedance
＜1 mΩ
Mechanical Characteristics
IP Degree of Protection (IEC 60529)
IP51 front display
Dimensions (WxHxD)
76x96.5x76.5
Mounting Type
35mm Standard DIN Rail mounting
Material of meter case
Self-extinguishing UL 94 V-0
Mechanical environment
M1
Environmental Characteristics
Operating Temperature
-25 to 55°C
Storage Temperature
-40 to 70°C
Humidity Rating
<95% RH at 50 °C (non-condensing)
Pollution Degree
2
Altitude
2000m
Electromagnetic Compatibility
Electrostatic Discharge
IEC 61000-4-2
Immunity to Radiated Fields
IEC 61000-4-3
Immunity to Fast Transients
IEC 61000-4-4
Immunity to Impulse Waves
IEC 61000-4-5
Conducted Immunity
IEC 61000-4-6
Immunity to Magnetic Fields
IEC 61000-4-8
Immunity to Voltage Dips
IEC 61000-4-11
Radiated Emissions
EN55011 Class A
Conducted Emissions
EN55011 Class A
Harmonics
IEC 61000-3-2
Safety
Measurement Category
Per IEC61010-1
CAT III
Current Inputs
Require external Current Transformer for Insulation
Over voltage Category
CAT III
Dielectric Withstand
As per IEC 61010-1 Double Insulated front panel display
Protective Class
II
Communications
Interface standard and protocol
RS485 and MODBUS RTU
Communication address
1~247
Transmission mode
Half duplex

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EASTRON SDM320-C User Manual
06-2018 V1.0
2018 EASTRON Electronic. All Rights Reserved. www.eastron.com.cn
Scroll display
Data type
Floating point
Transmission distance
1000m Maximum
Transmission speed
1200bps~9600bps
Parity
None (default), Odd, Even
Stop bits
1 or 2
Response time
<100 mS
Start up screens
1
The first screen lights up all display
segments and can be used as a display
check
2
The second screen indicates the software
version.
After 5 seconds delay, the screen will display active energy measurements.
Measurements
The buttons operate as follows:
1
>Scroll the display for data checking.
>Changing option at Set-up mode
>Exit the Set-up mode
2
>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.

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EASTRON SDM320-C User Manual
06-2018 V1.0
2018 EASTRON Electronic. All Rights Reserved. www.eastron.com.cn
Page
Display
Descriptions
1
Total active energy(kWh)
Total=Import+ Export
import energy
export energy
Total reactive energy(kVArh)
Total=Import+ Export
Import reactive energy
Export reactive energy
2
Voltage
3
Current

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EASTRON SDM320-C User Manual
06-2018 V1.0
2018 EASTRON Electronic. All Rights Reserved. www.eastron.com.cn
4
Active power
5
Power Factor
6
Frequency
7
Total Active Power Demand
8
Modbus Address
9
Baud Rate
10
Parity
11
Pulse Constant

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EASTRON SDM320-C User Manual
06-2018 V1.0
2018 EASTRON Electronic. All Rights Reserved. www.eastron.com.cn
12
Software Version
13
When the relay is failed to turn off, the display
will show Err-1, which will scroll every 3s with
the display of the measured value.
Set-up Mode
To get into Set-up Mode, the user need press the “Enter” button for 3 second.
Page
Display
Descriptions
1
Password
To get into Set-up mode, it asks a password
confirmation. Default password: 1000
Use and to enter correct
password.
If an correct password is entered, the display will
show:
If an incorrect password is entered, the display
will show: Err
2
Keep pressing for 3 second, the current
selection will flash, use and to
change the Modbus address. Options: 1~247
Keep press for 3s to confirm the
selection.

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EASTRON SDM320-C User Manual
06-2018 V1.0
2018 EASTRON Electronic. All Rights Reserved. www.eastron.com.cn
3
Keep pressing for 3 second, the current
selection will flash, use and to
change the Baud rate. Options: 1200,
2400,4800,9600 ( default )
Keep press for 3s to confirm the
selection.
4
Keep pressing for 3 second, the current selection
will flash, use and to change the
Parity. Options: EVEN,ODD,NONE ( default )
Keep press for 3s to confirm the
selection.
Keep pressing for 3 second, the current
selection will flash, use and to
choose Pulse Constant. Options: 1000, 100, 10, 1
Example shows pulse constant 1000imp/kWh.
Please note: The LED rate for pulse is fixed with
1000imp/kWh.
5
Keep pressing for 3 second, the pulse will
flash, use and to choose Pulse
Duration. Options: 60, 100, 200ms
Example shows the Pulse Duration is 100ms.
Please note: When the Pulse Constant is
1000imp/kWh, the pulse duration is fixed with
35ms.

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EASTRON SDM320-C User Manual
06-2018 V1.0
2018 EASTRON Electronic. All Rights Reserved. www.eastron.com.cn
6
This option allows user to configure the pulse
output. The output ca be set to provide a pulse
for a defined amount of active or reactive
energy. Use this section to set up the relay pulse
output-Units: kWh, kVArh.
Default: P kWh ( active energy)
Example shows Pulse Output type: kWh ( active )
Example shows Pulse Output type: kVArh
(reactive)
This sets the period in minutes over which the
current and power reading are integrated for
maximum demand measurement. The options
are 0~60.
Example shows the DIT is 60 minutes.
This sets the Display scroll time.
Options:0~30s
Example shows the display will scroll every 30s.
Please note: 0 means the display scroll is closed.
No display scroll
This meter provides a function to set the blue
backlight lasting time (off on, 5, 10, 20, 30, 60,
120mins )
Example shows the backlight will be off in
60mins.
Please note: Off means backlight always off; On
means the backlight always on here.
This meter provides a function to set Password.
Example shows the password is 1000.

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EASTRON SDM320-C User Manual
06-2018 V1.0
2018 EASTRON Electronic. All Rights Reserved. www.eastron.com.cn
6
Use and to enter the new
password. The range is from 0001 to 9999.
Keep press for 3s to confirm the
selection.
7
Keep pressing for 3 seconds, then use
to check the Alarm correlation
information: Alarm object, Alarm value, relay
status.
use to check the Alarm object: U, I, F, P,
q, s
(Note: not programmable)
use to check the Alarm value.
(Note: not programmable)
Keep pressing for 3 second, to set relay
status. Off means relay open, ON means relay
close.
(note: This option only can be set when the
alarm occurs and the relay opens. If you want to
solve this alarm, use this option to set relay
status “on”. Therefore, please make sure the
alarm object is troubleshooted before you do
this.
Keep pressing button to exit the set-up mold.

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EASTRON SDM320-C User Manual
06-2018 V1.0
2018 EASTRON Electronic. All Rights Reserved. www.eastron.com.cn
Dimensions
Wiring diagram

11
EASTRON SDM320-C User Manual
06-2018 V1.0
2018 EASTRON Electronic. All Rights Reserved. www.eastron.com.cn
IF you have any question, please feel free to contact our sales team.
Zhejiang Eastron Electronic Co., Ltd.
No.1369, Chengnan Rd. Jiaxing, Zhejiang, 314001, China
Tel: [phone] 83698882
Fax: [phone]
Email: [e-mail]
www.eastron.com.cn
www.eastrongroup.com