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

EASTRON SDM320-C User Manual

06-2018 V1.0

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

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

EASTRON SDM320-C User Manual

06-2018 V1.0

Input-Voltage

Operational Voltage

176-276VAC

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

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

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

Communications

Interface standard and protocol

RS485 and MODBUS RTU

Communication address

1~247

Transmission mode

Half duplex

EASTRON SDM320-C User Manual

06-2018 V1.0

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

The first screen lights up all display

segments and can be used as a display

check

The second screen indicates the software

version.

After 5 seconds delay, the screen will display active energy measurements.

Measurements

The buttons operate as follows:

>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.

EASTRON SDM320-C User Manual

06-2018 V1.0

Page

Display

Descriptions

Total active energy(kWh)

Total=Import+ Export

import energy

export energy

Total reactive energy(kVArh)

Total=Import+ Export

Import reactive energy

Export reactive energy

Voltage

Current

EASTRON SDM320-C User Manual

06-2018 V1.0

Active power

Power Factor

Frequency

Total Active Power Demand

Modbus Address

Baud Rate

Parity

Pulse Constant

EASTRON SDM320-C User Manual

06-2018 V1.0

Software Version

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

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

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.

EASTRON SDM320-C User Manual

06-2018 V1.0

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.

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.

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.

EASTRON SDM320-C User Manual

06-2018 V1.0

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.

EASTRON SDM320-C User Manual

06-2018 V1.0

Use and to enter the new

password. The range is from 0001 to 9999.

Keep press for 3s to confirm the

selection.

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.

This manual suits for next models

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