Eastron SDM630MCT-ML User manual

SDM630MCT-ML User Manual V1.2
2019 EASTRON ELECTRONIC. ALL RIGHTS RESERVED. www.eastrongroup.com
Quad Loads Multifunctional Energy Meter
SDM630MCT-ML
User manual V1.2

SDM630MCT-ML User Manual V1.2
2019 EASTRON ELECTRONIC. ALL RIGHTS RESERVED. www.eastrongroup.com
Zhejiang Eastron Electronic Co.,Ltd.
Statements
All rights reserved. Without the written permission of the company, no paragraphs or chapters in this
manual can be extracted, copied or reproduced in any form. Otherwise, the violator shall bear all
consequences.
The company reserves all legal rights.
The company reserves the right to amend the product specifications in this manual without prior notice.
Before placing an order, please contact our company or local agent to get the latest specifications.

SDM630MCT-ML User Manual V1.2
2019 EASTRON ELECTRONIC. ALL RIGHTS RESERVED. www.eastrongroup.com
Content
Chapter 1. Introduction ............................................................................................................ - 1 -
1.1 Introduction...............................................................................................................................- 1 -
1.2 Product Characteristics ........................................................................................................- 1 -
1.3 Application ...........................................................................................................................- 1 -
Chapter 2. Technical Parameters............................................................................................... - 2 -
2.1Technical parameters.................................................................................................................- 2 -
2.2 Accuracy ....................................................................................................................................- 2 -
2.3 RS485 communication............................................................................................................... - 2 -
2.4 Performance criteria .................................................................................................................- 3 -
2.5 Dimensions................................................................................................................................ - 3 -
2.6 Wiring diagram.......................................................................................................................... - 4 -
2.6.1 Three Phase 4 Wires...........................................................................................................- 4 -
2.6.2 Three Phase 3 Wires........................................................................................................... - 4 -
2.6.3 Single Phase 2 Wires...........................................................................................................- 5 -
2.6.4 Single Phase 3 Wires...........................................................................................................- 5 -
Chapter 3. Operation................................................................................................................ - 6 -
3.1 Installation display..................................................................................................................... - 6 -
3.2 Button Function:........................................................................................................................- 6 -
3.3 Measurements ..........................................................................................................................- 7 -
3.3.1 Voltage and current............................................................................................................ - 7 -
3.3.2 Frequency, Power factor and Demand...............................................................................- 8 -
3.3.3 Power..................................................................................................................................- 8 -
3.3.4 Energy.................................................................................................................................- 9 -
3.4 Setup Mode.............................................................................................................................- 10 -
3.4.1 Password Validation......................................................................................................... - 10 -
3.4.2 Communication Address ..................................................................................................- 10 -
3.4.3 Baud rate setup ................................................................................................................- 12 -
3.4.4 Parity setup.......................................................................................................................- 12 -
3.4.5 Stop bits setup..................................................................................................................- 12 -
3.4.6 CT2 check..........................................................................................................................- 13 -

SDM630MCT-ML User Manual V1.2
2019 EASTRON ELECTRONIC. ALL RIGHTS RESERVED. www.eastrongroup.com
3.4.7 CT1 setup..........................................................................................................................- 13 -
3.4.8 Demand Interval Time setup............................................................................................- 14 -
3.4.9 Backlit Power Time Setup.................................................................................................- 14 -
3.4.10 System Type Setup ......................................................................................................... - 14 -
3.4.11 Password Modification Setup.........................................................................................- 15 -
3.4.12 CT Reverse Connect Correction......................................................................................- 15 -
3.4.13 Reset...............................................................................................................................- 16 -
Chapter 4. Communication ......................................................................................................- 16 -
4.1 RS485 Bus Connection.............................................................................................................- 16 -
4.1.1 Internal Pinout for Communication RS485 Port...............................................................- 16 -
4.1.2 Connection Diagram for Communication.........................................................................- 17 -
4.2 Protocol of Single Communication Address Mode .................................................................- 17 -
4.2.1 Input Registers, Function code (Hex): 04 .........................................................................- 17 -
4.2.2 Holding Register, Function code (Hex): 03(read) / 10(write)........................................... - 20 -
4.3 Protocol of Multi Communication Addresses Mode............................................................... - 24 -
4.3.1 Input Register, Function code (Hex): 04...........................................................................- 24 -
4.3.2Holding Register，Function code (Hex) : 03(reade) / 10(write).......................................- 27 -
4.4 Example...................................................................................................................................- 30 -

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Chapter 1. Introduction
1.1 Introduction
SDM630MCT-ML is anew multifunction energy meter designed by Eastron for multi channels measurements.
The meter can work with 1p2w, 1p3w, 3p3w and 3p4w electricity grid, and it provides all important electrical
parameters: voltage, current, power, PF, THD, frequency, demand, energy etc. By using plug-in connectors, the
meter provides an easy click solution saving 80% installation time and avoiding wiring mistakes.
The SDM630MCT-ML is compactly designed. It can be used as 4x three phase energy meters or 12x single
phase energy meters. 100mV secondary external CT is required to work with the meter.
The meter is equipped with aRS485 communication port by using 2x RJ45 connectors. Modbus RTU protocol is
adopted for remote reading and programming. The meter has abig backlitted LCD showing data and uses 4
touch buttons in front for data checking and programming.
1.2 Product Characteristics
⚫100mV/100mA CT connected
⚫Multiparameters measurement
⚫Plug-in solution
⚫LCD with white backlit, adjustable backlit time
⚫Quad loads measurement
Measurements:
⚫Phase voltage: V1, V2, V3
⚫Line voltage: V1-2, V2-3, V3-1
⚫Current: I1, I2, I3
⚫Active power: P1, P2, P3, P_total (total active power)
⚫Reactive power: Q1, Q2, Q3, Q_total (total reactive power)
⚫Apparent power: S1, S2, S3, S_Total (total apparent power)
⚫Frequency: Hz
⚫Power factor: PF
⚫Active energy: Ep_imp (import active energy), Ep_exp (export active energy), Ep_total (total active energy)
⚫Reactive energy: Eq_imp (import reactive energy), Eq_exp (export reactive energy), Eq_total (total reactive
energy)
⚫THD-I and THD-U
⚫Maximum demand: MD
⚫Max./Min. value: Max/Min
Setup:
⚫RS485 Modbus
⚫CT1 value
⚫CT reverse connection
⚫Demand Interval Time
⚫Backlit time
⚫Supply system 1p2w, 1p3w,3p3w,3p4w
⚫Reset
⚫Password modification
1.3 Application
SDM630MCT-ML is suitable for scenarios where multi-loads are required.

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Chapter 2. Technical Parameters
2.1Technical parameters
◆Voltage AC (Un): 3*230/400VAC
Voltage range: 50 - 600VAC
Auxiliary power supply: 85 - 300VAC
◆Current input:
Primary current input: 1 - 9999A
Secondary current input: 100mV (optional：100mA)
Overcurrent withstand: 20Imax for 0.5s
◆Frequency:
Rated value: 50/60Hz，
Range: 45 - 65Hz
◆Voltage withstand:
AC voltage withstand: 4KV/1min
Impulse voltage withstand: 6kV – 1.2µS waveform
◆Power consumption: ≤ 2W/10VA
◆Display: LCD with white backlit
◆Max. reading: 99999999 kWh/kVArh
2.2 Accuracy
◆Voltage: 0.5%
◆Current: 0.5%
◆Frequency: 0.2%
◆Power factor: 1%
◆Active power: 1%
◆Reactive power: 1%
◆Apparent power: 1%
◆Active energy: Class1
◆Reactive energy: Class2
2.3 RS485 communication
◆Bus type: RS485
◆Protocol: Modbus RTU
◆Baud rate: 2400/4800/9600(default)/19200/38400bps
◆Address range: 1-247
◆Max. Bus loading: 64pcs
◆Communication distance: 1000m
◆Parity: EVEN/ODD/NONE (default）
◆Data bit: 8
◆Stop bit: 1

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Note: SDM630MCT-ML has 2 modes of communication address. The modes can be set by pressing the buttons on
the meter or via RS485 Modbus.
Mode 1: Single communication address mode. Under this mode, the register address of different channels (CH01-
CH04) will be showed in segments. Channel 1(CH01) will be matched to 0~2999; Channel 2(CH02) 3000~5999;
Channel 3(CH03) 6000~8999, and Channel 4(CH04) 9000~11999.
Mode 2: Multi communication addresses mode. Under this mode, each meter will have 4 different modbus
addresses. Each channel (CH01-CH04) matches to one modbus address and all the channels share the same
registers. The measurement data will be distinguished by different Modbus addresses. Therefore, each
SDM630MCT-ML can be used as 4 normal meters.
Please check the protocol for detailed explanation of register codes.
2.4 Performance criteria
◆Operation humidity: ≤90%
◆Storage humidity: ≤95%
◆Operating temperature: -25℃~+55℃
◆Storage temperature: -40℃~+70℃
◆International standard：GB-T 17215/ IEC62053-21/ EN50470-1/3
◆Accuracy class: Class 1
◆Installation category: CATIII
◆Protection against penetration of dust and water: IP51 (indoor)
◆Insulating encased meter of protective class: II
◆Altitude: ≤2000m
2.5 Dimensions
Front View: Side View:

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2.6 Wiring diagram
2.6.1 Three Phase 4 Wires
2.6.2 Three Phase 3 Wires

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2.6.3 Single Phase 2 Wires
2.6.4 Single Phase 3 Wires

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Chapter 3. Operation
3.1 Installation display
The first screen lights up all display segments and can be used as a
display check.
The second screen indicates the firmware installed in the unit.
Note：the actual display might be different with the left on here.
he interfaceperforms a self-test and indicates the result if the test
passes.
3.2 Button Function:
Button
Short click
Long press (3s)
Display mode
Setup mode
Display mode
Setup mode
V1 V2 V3
V1-2 V2-3 V3-1
I1 I2 I3
In
V %THD
I %THD
Return to
previous menu
Hz PF
PF1 PF2 PF3
MD of I1 I2 I3
MD of Power
Previous page
or increase
value
Check meter information
(Address,
Baudrate,
Parity, CT1, SWV, Full Screen)
P1 P2 P3
Q1 Q2 Q3
S1 S2 S3
P-t Q-t S-t
Next page or
decrease value
Change Channel
(CH01~CH04)
Active E-t
Reactive E-t
Imp Active E
Exp Active E
Imp Reactive E
Exp Reactive E
Move to right
side
Get into Setup mode
Confirm setting

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3.3 Measurements
3.3.1 Voltage and current
Each successive pressing of the button selects a new range:
Phase to neutral voltage
Phase to phase voltage
Current on each phase
Curret on netural
Phase to neutral voltage THD%
Phase to neutral current THD%

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3.3.2 Frequency, Power factor and Demand
Each successive pressing of the button selects a new range:
Frequency and Power Factor (total)
Power Factor of each phase
Maximum current demand on each phase
Maximum total power demand
3.3.3 Power
Each successive pressing of the button select a new range:
Instantaneous Active Power in kW

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Instantaneous Reactive Power in kVAr
Instantaneous Volt-amps in KVA
Total kW, kVArh, kVA
3.3.4 Energy
Each successive pressing of the button shows following measurements:
Total active energy in kWh
Total reactive energy in kVArh
imported active energy in kWh

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Exported active energy in kWh
Imported reactive energy in kVArh
Exported reactive energy in kVArh
3.4 Setup Mode
The meter’s settable parameters are password protected. By long pressing the 4th button “E”, the user can get into
the setup mode.
3.4.1 Password Validation
Press button and to enter password.
Long press button for password confirmation.
If an incorrect password is entered, the display will show “Err”. If the
password is correct, the unit will show the setup menu.
Password: default 1000
3.4.2 Communication Address
Communication address setup
Long press to enter the setup
3.4.2.1 Communication address modes(quantity) setup interface
The meter has two communication address modes:
1. Single communication address: there is only 1 address for the whole meter, and all channels use the
same communication address.

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2. Multi communication addresses. There are 4 or 3 or 2 different communication address for different
channels.
Communication address mode setup interface
Long press to enter the interface.
Press and to setup communication address.
Long press to confirm.
Option：1, M* (default)
1 means one communication address mode;
M* means multi communication addresses. It can be 2 or 3 or 4. It
depends on the meter you have is for dual loads, or tri-loads or qual
loads.
3.4.2.2-1 Address setup，range 001~247（one communication address mode）
Communication address setup
Long press button to enter the setup mode.
Press button and to set the addresses.
Long press button to confirm.
Address range：001 ~ 247, default 001.
3.4.2.2-2 Address setup, range 001~247（Multi communication addresses mode）
Address setup for corresponding channel
Long press button to enter the setup mode.
Press button and to choose the channel (CH01-
CH04) that need setting.

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Press button and to set the address.
Long press to confirm.
Address range：001 ~ 247, default 001
3.4.3 Baud rate setup
Long press button to enter the setup mode.
Press button and to set the baud rate.
Long press to confirm.
Option: 2400, 4800, 9600(default), 19200, 38400 bps
3.4.4 Parity setup
Long press button to enter the setup mode.
Press button and to set the parity.
Long press button to confirm.
Option: NONE (default), EVEN, ODD
3.4.5 Stop bits setup
Long press button to enter the setup mode.

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Press button and to set the stop bits.
Long press button to confirm.
Option:1(default), 2
Only when the parity is set to NONE, the stop bits can be 2.
3.4.6 CT2 check
Check only, not settable.
Note：if the unit is 100mA input version, the CT2 check will show 0.1A.
3.4.7 CT1 setup
Long press button to enter the setup.
Press button and to choose the right channel (CH01-
CH04).
Long press button to enter the setup interface of CT1 of each
phase.
Choose the phase to be set
Press button and to choose the phase（L1, L2, L3）
Long press to enter the CT1 setup interface
CT1 setup interface
Press button and to set the CT1 value.
Long press to confirm.
CT1 range：1~9999 A, default 100 A

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3.4.8 Demand Interval Time setup
Long press button to enter the setup.
Press button and to set the demand period value.
Long press button to confirm.
Option: 5, 8, 10, 15, 20, 30, 60(default) minutes.
3.4.9 Backlit Power Time Setup
Long press button to enter the setup.
Press button and to set the value.
Long press button to confirm.
Option: ON, OFF, 5, 10, 30, 60(default), 120 mins
ON means backlit always on, OFF means backlit always off.
3.4.10 System Type Setup
Long press button to enter the setup.
Press button and to setup the supply system.
Option: 3P4W, 3P3W, 1P2W or 1P3W.
Long press button to confirm.
Option: 3P4W(default), 3P3W, 1P2W, 1P3W.

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3.4.11 Password Modification Setup
Long press button to enter the setup mode.
Press button and to enter the new password.
Long press button to confirm.
Range：0000~9999, default 1000.
3.4.12 CT Reverse Connect Correction
If the CT is reversely connected, the user does not need to disconnect and reconnect the cables. By this
setting adjustment, the meter will automatically adjust the current direction.
Long press to choose the channel.
Channel selection
Press button and to choose channel (CH01-CH04)
Long press to enter the phase selection interface for CT
Phase select the phase
Press button and to choose the phase (L1, L2, L3).
Long press button to enter the setup.
Press button and to set the direction.
Long press button to confirm.
Option: FRD (forward) and REV (reverse), default: FRD.

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3.4.13 Reset
This function allows user to reset data.
Long press button to choose channel.
Channel Selection interface
Press button and to choose channel (CH01-CH04).
Long press to enter the reset confirmation interface.
Press button and to choose the data type.
Long press button to confirm. Reset done.
Reset option: Max. demand, Max. value, Min. value
Note：
The left interface shows how to reset demand information.
The left interface shows how to reset Max. and Min. values.
Chapter 4. Communication
4.1 RS485 Bus Connection
The meter provides a RS485 communication in form of RJ45 port and screw terminals.
4.1.1 Internal Pinout for Communication RS485 Port