Eastron DCM230 User guide

Eastron DCM230 User Manual

- 1 -

⚫ Measures kWh, W, V, A etc.

⚫ Bi-directional measurement IMP & EXP

⚫ Pulse output

⚫ RS485 Modbus

⚫ Din rail mounting 35mm

⚫ DC shunt connection

⚫ Class 1

DCM230 DC Energy Meter

Zhejiang Eastron Electronic Co.,Ltd. Tel: [phone] 83698882 Fax: [phone]
Address: No.1369 Chengnan Road, Jiaxing, Zhejiang, 314001, China. Web: www.eastron.com.cn Email: [e-mail]

User Manual V1.5

2019

Eastron DCM230 User Manual

- 2 -

Introduction

Eastron DCM230 series DC energy meters are designed for measuring and monitoring in DC systems. The din rail DC

energy meters can measure of important DC parameters: Village,. current, power and energy etc. It also support bi-

directional measurement with pulse output. All data in the meter are accessible via RS485 using Modbus RTU. The

meter has two versions working with AC or DC power supply. Input voltage range up to 300, 600, 1000V DC, and

current inputs are flexible with DC shunt and current sensors. The multi-tariff version has a RTC equipped inside, it

can provides multi-tariff information and monthly records.

PART 1

Model list

Specification

General Specifications

Voltage DC Input 5~300V DC, 5~600V DC, 5~1000V DC

Auxiliary Supply 85~300V AC (DCM230-1)

or 9-60V DC (DCM230-2)

DC Shunt Input 75mV (default)

60mV, 45mV (optional)

Current Range 0~2000A

Power consumption ≤ 2W / 5VA

AC voltage withstand 4400V/ 1min

Impulse voltage withstand 6.4kV - 1.2/50µS waveform

Pulse output 1, 10, 100, 1000imp/kWh (default)

Pulse duration 60, 100 (default), 200mS

Pulse output indicate Total kWh/ import kWh/ export kWh

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Eastron DCM230 User Manual

- 3 -

CT1 setting

Default pulse constant

Settable pulse constant

1 – 20

1000 imp/kWh

1000,100,10,1 imp/kWh

Display LCD with backlit

Max. Reading 999999.9kWh

Weight 220g

Standard GB/T 33708-2017

Unit Characteristics

The Unit can measure and display:

⚫ voltage

⚫ Currents

⚫ Power

⚫ Active energy imported and exported

Pulse output indicates real-time energy measurement. An RS485 output allows remote monitoring from another

display or a computer.

Shunt Primary Current

The unit can be configured to operate with primary current and secondary input.

Primary current range: 0~2000A.

Second input: 75mV in default, 45mV, 60mV optional

RS485 Output for Modbus RTU

For Modbus RTU, the following RS485 communication parameters can be configured from the Set-up menu:

Baud rate 1200,2400, 4800, 9600,19200 bps

Parity none (default)/odd/even

Stop bits 1 or 2

RS485 network address nnn – 3-digit number, 001 to 247

Modbus™ Word order Hi/Lo byte order is set automatically to normal or reverse. It cannot be configured from

the set-up menu.

Set-up screens are provided for setting up the RS485 port.

Pulse output

The unit provides a pulse output. The constant can be configured to below:

1000 imp/kwh

100 imp/kWh

10 imp/kWh

1 imp/kWh

Pulse width: 200/100(default)/60 ms.

Note: the relationship between pulse constant and CT1

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Eastron DCM230 User Manual

- 4 -

21 – 200

100 imp/kWh

100,10,1 imp/kWh

201 – 2000

10 imp/kWh

10,1 imp/kWh

*when the CT setting on meter is 2000A, the default pulse constant is 10 imp/kWh and it can be set to 10 imp/kWh

or 1 imp/kWh.

*Over-current alarm: Alarm will happened when the current is over the CT1 value set on the meter. The Alarm LED

will stay solid and the corresponding register value will be changed. The user can read this register through

communication to determine whether an overcurrent alarm has occurred.

The pulse outputs can be set to generate pulses to represent Import kWh/ Export kWh/ total kWh.

The pulse output is passive type, complies with IEC62053-31 Class A.

Environment

Operating temperature -25℃ to +70℃
Reference temperature 23℃±2℃

Relative humidity 0 to 90%, non-condensing

Altitude up to 2000m

Installation category CAT II

Mechanical Environment M1

Electromagnetic environment E2

Degree of pollution 2

Mechanics

Din rail dimensions 36x99x63 (WxHxD) DIN 43880

Mounting DIN rail 35mm

Sealing IP51 (indoor)

Material Self-extinguishing UL94V-0

PART 2

Initialization Display

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

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Operation

Eastron DCM230 User Manual

- 5 -

Full Screen (stay 2s)

Software Version (stay 2s)

Current Modbus address

(stay 2s)

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Eastron DCM230 User Manual

- 6 -

Scroll display

Current baud rate (stay 2s)

Total active energy(kWh)

Total=Import+ Export

Max read: 999999.9 kWh

>Scroll the display for data checking.

>Changing option at Set-up mode

>Exit the Set-up mode

>Set-up mode entry

>Confirmation

Buttons function

There are two buttons on the front panel.

After initialization and self-checking program, the meter displays 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 DCM230 User Manual

- 7 -

Total active energy(kWh)

Total=Import+ Export

Display format:

5+2 -> 6+1 -> 5+2

99999.99 -> 100000.0 ->

999999.9 -> 00000.00

Partial resettable active

energy

Display format:

5+2 -> 6+1 -> 5+2

99999.99 -> 100000.0 ->

999999.9 -> 00000.00

T1~T4: total kWh

*Multi-tariff version only

Voltage

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Eastron DCM230 User Manual

- 8 -

Current

Power

Display format:

<1000 W: XXX W

<1000kW: XXX.XXX kW

For other value: XXXX.XX kW

Pulse constant

CT1 Primary current

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Eastron DCM230 User Manual

- 9 -

Meter address

Baud rate

Parity

Date

*Multi-tariff version only

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Eastron DCM230 User Manual

- 10 -

Time

*Multi-tariff version only

Software Version

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.

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.

Set-up Mode

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

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Eastron DCM230 User Manual

- 11 -

3
Keep pressing for 3 second, the current selection

will flash, use and to change the Baud rate.

Options: 1.2k, 2.4k,4.8k,9.6k ( default ),19.2k

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 )

5

Keep pressing for 3 second, the current selection

will flash, use and to change the type of

Pulse Output.

Options: total kWh, IMP kWh, EXP kWh

6
Keep pressing for 3 second, the current selection

will flash, use and to change the pulse

constant.

Options: 1000, 100, 10, 1 imp/kWh

*Default pulse constant is related to the CT1 setting

7
Keep pressing for 3 second, the current selection

will flash, use and to change the pulse

width.

Options: 60, 100, 200, unit: ms

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Eastron DCM230 User Manual

- 12 -

8
Use to select the CT1 option. Keep pressing

for 3 second, the current selection will flash, use

and to enter the Primary current. The range

is from 0001 to 2000. For example, if using a 100A/75mV

current transformer, the CT1 shall be 0100.

Keep press for 3s to confirm the selection.

Deafult : 1A

9

Keep pressing for 3 second, the current selection

will flash, use and to change the

DIT(Demand Integration Time).

Options: 0,5,8,10,15,20,30,60( default)

10
Use to select the scroll display time option. Keep

pressing for 3 second, the current selection will

flash, use and to enter the options:

0~60s.

Default: 0 s, represent do not scroll display

11
Use to select the backlit time option. Keep

pressing for 3 second, the current selection will

flash, use and to enter the options:

0,5,10,20,30,60 minutes. 0 means the light is always

on.

Default: 60 minutes

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Eastron DCM230 User Manual

- 13 -

12
Use to select the Password option. Keep pressing

for 3 second, the current selection will flash, use

and to enter the new password. The

range is from 0001 to 9999.

Default: 1000

13 Shunt wiring

Use to select the shunt connection option. Keep

pressing for 3 second, the current selection will

flash, use to choose the connection way.

Option: N, P

N: Negative type (default)

P: Positive type

14
Use to select the date interface, Keep pressing

for 3 second.

*Multi-tariff version only

14-1
the current selection will flash, use and

to set the correct date information.

*Multi-tariff version only

15
Use to select the time interface, Keep pressing

for 3 second.

*Multi-tariff version only

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Eastron DCM230 User Manual

- 14 -

15-1
the current selection will flash, use and

to set the correct time information

*Multi-tariff version only

16 Tariff information ( for view only and cannot be set)

*Multi-tariff version only

16-1

T1 means tariff number

Range from T1-T4

T0 means invalid rate number.

01 means serial number.

Range: 01-08

18:00 mean the starting time of current tariff number.

Keep pressing button to exit the set-up mold.

Zhejiang Eastron Electronic 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 DCM230 User Manual

- 15 -

Terminal Connection

AC Power Supply:

DC Power Supply:

Shunt Connection

Positive Type:

Negative Type:

Wiring diagram

Dimensions

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Eastron DCM230 User Manual

- 16 -

Address

(Register

)

DCM230 Input Register

Parameter

Modbus

Protocol Start

Address Hex

Description

Length

(bytes)

Data

Format

Units

Hi

Byte

Lo

Byte

30001

Line to neutral volts.

4

Float

V

00

00

30007

Current.

4

Float

A

00

06

30013

Active power.

4

Float

W

00

0C

30073

Import active energy

4

Float

kWh

00

48

30075

Export active energy

4

Float

kWh

00

4A

30085

Total system power demand

4

Float

W

00

54

30087

Maximum total system power demand

4

Float

W

00

56

30343

Total active energy

4

Float

kWh

01

56

30385

Resettable partial kWh

4

Float

kWh

01

80

34877

Total active Energy Rate 1

4

Float

kWh

13

0C

34879

Total active Energy Rate 2

4

Float

kWh

13

0E

34881

Total active Energy Rate 3

4

Float

kWh

13

10

34883

Total active Energy Rate 4

4

Float

kWh

13

12

34885

Import active Energy Rate 1

4

Float

kWh

13

14

34887

Import active Energy Rate 2

4

Float

kWh

13

16

34889

Import active Energy Rate3

4

Float

kWh

13

18

34891

Import active Energy Rate 4

4

Float

kWh

13

1A

34893

Export active Energy Rate 1

4

Float

kWh

13

1C

34895

Export active Energy Rate 2

4

Float

kWh

13

1E

34897

Export active Energy Rate 3

4

Float

kWh

13

20

34899

Export active Energy Rate 4

4

Float

kWh

13

22

38193

Total Last 1 month active Energy

(Total、Rate1、Rate2、Rate3、Rate4)

20

Float

kWh

20

00

PART 3 Modbus Protocol

Input registers are used to indicate the present values of the measured and calculated electrical quantities.

Each parameter is held in two consecutive16 bit register. The following table details the 3X register address,

and the values of the address bytes within the message. A (*) in the column indicates that the parameter

is valid for the particular wiring system. Any parameter with a cross(X) will return the value zero. Each

parameter is held in the 3X registers. Modbus Protocol function code 04 is used to access all parameters.

For example, to request: Amps 1 Start address=0006

No. of registers =0002

Amps 2 Start address=0008

No. of registers=0002

Each request for data must be restricted to 40 parameters or less. Exceeding the 40 parameter limit will cause

a Modbus Protocol exception code to be returned.

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Eastron DCM230 User Manual

- 17 -

38203

Total Last 2 month active Energy

(Total、Rate1、Rate2、Rate3、Rate4)

20

Float

kWh

20

0A

38213

Total Last 3 month active Energy

(Total、Rate1、Rate2、Rate3、Rate4)

20

Float

kWh

20

14

38223

Total Last4 month active Energy

(Total、Rate1、Rate2、Rate3、Rate4)

20

Float

kWh

20

1E

38233

Total Last 5 month active Energy

(Total、Rate1、Rate2、Rate3、Rate4)

20

Float

kWh

20

28

38243

Total Last 6 month active Energy

(Total、Rate1、Rate2、Rate3、Rate4)

20

Float

kWh

20

32

38253

Total Last 7 month active Energy

(Total、Rate1、Rate2、Rate3、Rate4)

20

Float

kWh

20

3C

38263

Total Last 8 month active Energy

(Total、Rate1、Rate2、Rate3、Rate4)

20

Float

kWh

20

46

38273

Total Last 9month active Energy

(Total、Rate1、Rate2、Rate3、Rate4)

20

Float

kWh

20

50

38283

Total Last 10 month active Energy

(Total、Rate1、Rate2、Rate3、Rate4)

20

Float

kWh

20

5A

38293

Total Last 11 month active Energy

(Total、Rate1、Rate2、Rate3、Rate4)

20

Float

kWh

20

64

38303

Total Last 12 month active Energy

(Total、Rate1、Rate2、Rate3、Rate4)

20

Float

kWh

20

6E
312289

Total Last 1 day active Energy

4

Float

kWh

30

00

312291

Total Last 2 days active Energy

4

Float

kWh

30

02

312293

Total Last 3 days active Energy

4

Float

kWh

30

04

312295

Total Last 4 days active Energy

4

Float

kWh

30

06

312297

Total Last 5 days active Energy

4

Float

kWh

30

08

312299

Total Last 6 days active Energy

4

Float

kWh

30

0A

312301

Total Last 7 days active Energy

4

Float

kWh

30

0C

312303

Total Last 8 days active Energy

4

Float

kWh

30

0E

312305

Total Last 9 days active Energy

4

Float

kWh

30

10

312307

Total Last 10 days active Energy

4

Float

kWh

30

12

312309

Total Last 11 days active Energy

4

Float

kWh

30

14

312311

Total Last 12 days active Energy

4

Float

kWh

30

16

312313

Total Last 13 days active Energy

4

Float

kWh

30

18

312315

Total Last 14 days active Energy

4

Float

kWh

30

1A

312317

Total Last 15 days active Energy

4

Float

kWh

30

1C

312319

Total Last 16 days active Energy

4

Float

kWh

30

1E

312321

Total Last 17 days active Energy

4

Float

kWh

30

20

312323

Total Last 18 days active Energy

4

Float

kWh

30

22

312325

Total Last 19 days active Energy

4

Float

kWh

30

24

312327

Total Last 20 days active Energy

4

Float

kWh

30

26

312329

Total Last 21 days active Energy

4

Float

kWh

30

28

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Eastron DCM230 User Manual

- 18 -

Holding Registers

312331

Total Last 22 days active Energy

4

Float

kWh

30

2A

312333

Total Last 23 days active Energy

4

Float

kWh

30

2C

312335

Total Last 24 days active Energy

4

Float

kWh

30

2E

312337

Total Last 25 days active Energy

4

Float

kWh

30

30

312339

Total Last 26 days active Energy

4

Float

kWh

30

32

312341

Total Last 27 days active Energy

4

Float

kWh

30

34

312343

Total Last 28 days active Energy

4

Float

kWh

30

36

312345

Total Last 29 days active Energy

4

Float

kWh

30

38

312347

Total Last 30 days active Energy

4

Float

kWh

30

3A

30385

Current resettable total active energy

4

Float

kWh

01

80

316385

Line to neutral volts.

4

Float

V

40

00

316387

Current.

4

Float

A

40

02

316389

Active power.

4

Float

W

40

04

316391

Import active energy

4

Float

W

40

06

316393

Emport active energy

4

Float

W

40

08

316395

Total system power demand

4

Float

kWh

40

0A

316397

Maximum total system power demand

4

Float

kWh

40

0C

316399

Total active energy

4

Float

kWh

40

0E

316401

Current resettable total active energy

4

Float

kWh

40

10

316403

Current overload alarm

00 00 means no alarm

00 01 means Current overload alarm

2

Hex

None

40

12

Note:

(1): The method of power demand calculation is: Import- Export. When the import and export powers appear in the demand period,

the import power subtract the export power during data processing.

(2) The red marked are commonly used registers which allow users to read continuously at one time.

(3) The green marked registers are used for Multi-tariff version only

Holding registers are used to store and display instrument configuration settings. All holding registers not listed in the

table below should be considered as reserved for manufacturer use and no attempt should be made to modify their

values.

The holding register parameters may be viewed or changed using the Modbus Protocol. Each parameter is held in two

consecutive 4X registers. Modbus Protocol Function Code 03 is used to read the parameter and Function Code 10 is

used to write. Write to only one parameter per message.

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Eastron DCM230 User Manual

- 19 -

Address

Register

Parameter

Modbus

Protocol

Start Address Hex

Valid range

Mode

High Byte

Low Byte

40003

Demand Period

00

02

Write demand period: 0~60 minutes, default 60.

Setting the period to 0 will cause the demand to

show the current parameter value, and demand

max to show the maximum parameter value

since last demand reset.

Length : 4 byte
Data Format : Float

r/w

40005

Slide time

00

04

Default 1, min.

Range ：1 ~ (Demand Period -1).

Length : 4 byte

Data Format : Float

r/w

40013

Pulse Width

00

0C

Write pulse1 on period in

Milliseconds: 60, 100 or 200, default 100.

Length : 4 byte

Data Format: float

r/w

40019

Network Parity

and Stop

00

12

Write the network port parity/stop bits for

MODBUS Protocol, where:

0 = 1 stop bit and none parity, default.

1 = 1 stop bit and even parity.

2 = 1 stop bit and odd parity.

3 = 2 stop bit and none parity. Requires a restart

to become effective.

Length : 4 byte

Data Format : Float

r/w

40021

Modbus

address

00

14

Write the Modbus address

Address: 1 to 247 for MODBUS Protocol, default

1. Requires a restart to become effective.

Length : 4 byte

Data Format : Float

r/w

40023

Pulse constant

00

16

Options：

0 means 1000 imp/kWh

1 means 100 imp/kWh

2 means 10 imp/kWh

3 means 1 imp/kWh

Length : 4 byte

Data Format: float

r/w

40025

Password

00

18

Write password for access to protected

registers.

Length : 4 byte

Data Format : Float

ro

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Eastron DCM230 User Manual

- 20 -

40029

Baud Rate

00

1C

Options：

0 means 2400 bps

1 means 4800 bps

2 means 9600 bps

3 means 19200 bps

5 means 1200 bps

Default：2

Length : 4 byte

Data Format: float

r/w

40059

Auto-scroll

display time

00

3A

Range: 0~60s.

0 means no scroll

Default:0

Length : 4 byte

Data Format : Float

r/w

40061

Backlit time

00

3C

Options:0~120 munites

0 means the backlit always on

Default：60

Length : 4byte

Data Format : Float

r/w

40087

Pulse output

type

00

56

Options：

1 means Import active energy

2 means total active energy

4 means Export active energy

Default：2

Length : 4 byte

Data Format: float

r/w

48193

Connection

method of

shunt

20

00

Setting on shunt connection.

Option:

00 4E means Negative type (default)

00 50 means Positive type

Length: 2 byte

Data Format: Hex

r/w

461457

Reset

F0

10

00 00：Reset Maximum Demand

00 03：Reset Partial Energy

Length : 2 byte

Data Format:Hex

wo

463776

Energy

Measurement

model

F9

20

Options：

00 01：Total=Import

00 02：Total=Import+Export

00 03：Total=Export

Length : 2 byte

Data Format: Hex

r/w

461441

Date and Time

F0

00

Data definition:

r/w

Zhejiang Eastron Electronic Co.,Ltd. Tel: [phone] 83698882 Fax: [phone]
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Eastron DCM230 User Manual

- 21 -

ESFL-2A Series

Primary Input

Rated Voltage Output

Accuracy

Dimension(mm)

10-50 A

75/60/45 mV

0.5%

25x120x22

75-100 A

75/60/45 mV

0.5%

23x109x11

150-200 A

75/60/45 mV

0.5%

22x118x22

300 A

75/60/45 mV

0.5%

26x127x22

400 A

75/60/45 mV

0.5%

36x127x22

500 A

75/60/45 mV

0.5%

46x127x22

600 A

75/60/45 mV

0.5%

55x127x22

750 A

75/60/45 mV

0.5%

76x127x22

1000 A

75/60/45 mV

0.5%

96x127x22

1500 A

75/60/45 mV

0.5%

113x127x22 or 87x200x97

2000 A

75/60/45 mV

0.5%

136x200x97

Second- minute- hour-week-date-month-

year-20

Length: 8 byte

Data Format: BCD

463233

Tariff

information

F7

00

Date definition:

Tariff number-minute- hour

Tariff setting range: 01,02,03,04; 00 means

invalid tariff rate

Minute setting range: 00-59

Hour setting range: 00-23

Length: 24 byte

Data Format: BCD

r/w

464513

Serial number

FC

00

Serial number

Length: 4 byte

Data Format: unsigned int32

Note: Only read

ro

* The green marked registers are used for Multi-tariff version only

PART 4 Shunt

Zhejiang Eastron Electronic Co.,Ltd. Tel: [phone] 83698882 Fax: [phone]
Address: No.1369 Chengnan Road, Jiaxing, Zhejiang, 314001, China. Web: www.eastron.com.cn Email: [e-mail]