Eastron SDM630MCT-2L User Manual Download Page 1

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User Manual

2020

SDM630MCT-2L

DIN Rail Smart Energy Meter for Single and Three

Phase Electrical Systems

Introduction

This document provides operating, maintenance and installation
instructions. This unit measures and displays the characteristics of
Single Phase Two Wire (1P2W) and 2 x (C1 & C2) Three Phase Four
Wire (3P4W) networks. The measuring parameters include Voltage
(V), Current (A), Frequency (Hz), Power (kW/KVA/KVAr), Power
Factor (PF), Imported, Exported and Total Energy (kWh/kVArh). The
unit also measures Maximum Demand Current and Power, this is
measured over preset periods of up to 60 minutes.

This particular model accommodates 100mA Current Transformers
and can be configured to work with a wide range of CTs. It also
comes with a complete comms capability with built in RS485
Modbus RTU outputs, configuration is password protected.

This unit can be powered from a separate auxiliary supply (AC or
DC). Alternatively, it can be powered from the monitored supply by
linking the voltage reference and neutral reference in to terminals 5
& 6 (Please refer to wiring diagram).

1.1

Unit Characteristics

The SDM630MCT-2Lcan measure and display 2 x Three Phase
circuits (C1 & C2) :

• Phase to Neutral Voltage and THD% (Total Harmonic Distortion)

of all Phases

• Line Frequency
• Current, Maximum Demand Current and Current THD% of all

Phases

• Power, Maximum Power Demand and Power Factor
• Imported, Exported & Total Active Energy
• Imported, Exported & Total Reactive Energy

The unit has a Password-Protected set up menu for:

• Changing the Password
• System Configuration - 1P2W & 3P4W.
• Demand Interval Time
• Reset for Demand Measurements

1.2

Current Transformer Primary Current

This unit requires configuring to operate with the appropriate
curren transformer(s), thesecondary current is 0.1A. It is
programmed by inputting the ratio (CT Primary). It can be used on
primary currents up to 6000A.

1.3

RS485 Serial – Modbus RTU

This unit is compatible with remote monitoring through RS485
Modbus RTU. Set-up screens are provided for configuring the
RS485 port. Refers to section 4.8.

Start Up Screens

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 and

its build number.

The interface performs a

self-test and indicates the

result if the test passes.

*After a short delay, the screen will display active
energy measurements.

Measurements

The buttons operate as follows:

ESC

U/I

Selects the Voltage and Current display

screens. In Set-up Mode, this is the

“Left” (press) or “Escape” (hold 3sec)

button.

Select the Frequency and Power factor

display screens. In Set-up Mode, this is

the “Up” (press) button.

Select the Power display screens.

In Set-up Mode, this is the

“Down” (press) button.

Select the Energy display screens.

In Set-up mode, this is the

“Right” (press) or “Enter” (hold 3sec)

button.

3.1

Switching Three Phase Circuit Display

Default is Circuit 1 (C1).

To Switch from Circuit 1 (C1)

to Circuit 2 (C2) press and

hold the

button. Press

and hold again to switch

back to C1.

3.1.1

Voltage and Current

Each successive press of the

ESC

U/I

button selects a new parameter:

Phase to neutral voltages.

Phase to Phase voltages.

Current on each phase.

Phase to neutral voltage

THD%.

Current THD% for each

phase.

3.2

Frequency and Power Factor and Demand

Each successive press of the

button selects a new range:

Frequency and Power

Factor (total).

Power Factor of each

phase.

Maximum Power Demand.

Maximum Current

Demand.

3.3

Power

Each successive press of the

button select a new range:

Instantaneous Active

Power in kW.

Instantaneous Reactive

Power in kVAr.

Instantaneous Volt-Amps

in KVA.

Total kW, kVArh, kVA.

3.4

Energy Measurements

Each successive press of the

button selects a new range:

Imported active energy

in kWh.

Exported active energy

in kWh.

Imported reactive energy

in kVArh.

Exported reactive energy

in kVArh.

Total active energy in kWh.

Total reactive energy in

kVArh.

Please note the register is 9999999.9 display over two lines.

Set Up

4.1

Set up Entry Methods

Some menu items, such as Password and CT, require a four-

digit number entry while others, such as supply system, require

selection from a number of menu options.

4.1.1

Menu Option Selection

1. Use the

and

buttons to scroll through the different

options of the set up menu.

2. Hold the

button for 3 seconds to confirm your selection.

3. If an item flashes, then it can be adjusted by the

and

buttons.

4. Having selected an option from the current layer, hold the

button for 3 seconds to confirm your selection.

5. Having completed a parameter setting, hold the

ESC

U/I

button for

3 seconds to return to a higher menu level.

6. On completion of all setting-up, hold the

ESC

U/I

button for 3

seconds, the measurement screen will then be restored.

4.1.2

Number Entry Procedure

When setting up the unit, some screens require the entering

of a number. In particular, on entry to the setting up section, a

password must be entered. Digits are set individually, from left to

right. The procedure is as follows:

1. The current digit to be set flashes and then can be adjusted using

the

and

buttons.

2. Press the

button to more right to the next digit.

3. After setting the last digit, hold the

button for 3 seconds to

save your selection.

4.2

Communication

The RS485 port can be used for communication using Modbus RTU

Protocol. To configure the Modbus settings, such as Address and

Baud Rate, this is also done within the Password-protected set up

menu.

4.2.1

RS485 Address

Use the

and

buttons to select the menu

option. The screen will show

the current setting.

Hold the

button to set

the meter Address.

Range: 001(default) to 247.

Hold the

button to

confirm the selection.

Use the

and

buttons to choose the necessary number,

then press the

button to move along to the next number. To

save the new setting, hold the

button for 3 seconds until the

selection stops flashing.

4.2.2

Baud Rate

Use the

and

buttons to select the menu

option. The screen will show

the current setting.

Hold the

button to

enter the menu option, the

current selection will flash.

Use the

and

buttons to select the

required option.

On completion of the entry procedure, hold the

button to

confirm the setting.

4.2.3

Parity

Use the

and

buttons to select the menu

option. The screen will show

the current setting.

Hold the

button to

enter the menu option, the

current selection will flash.

Use the

and

buttons to select the

required option.

Range: None (default), Odd

or Even.

On completion of the entry procedure, hold the

button for 3

seconds until the selection stops flashing.

4.2.4

Stop bits

Use the

and

buttons to select the menu

option. The screen will show

the current setting.

Hold the

button to

enter the menu option, the

current selection will flash.

Use the

and

buttons to select the

required option.

Range: 1 (default) or 2.

On completion of the entry procedure, hold the

button for 3

seconds until the selection stops flashing.

4.5

CT Configuration

This unit is CT Operated, the primary (CT1) and secondary (CT2) of

the current transformer need to be programmed correctly for the

meter to scale the inputs accordingly.

Use the

and

buttons to select the menu

option. The screen will show

the configure CT setting.

Set the CT Ratio Value:

Hold the

button to

enter the CT Ratio setting

screen. The range is from

0001 to 9999. 0005A default

o Switch from Circuit 1 (C1)

to Circuit 2 (C2) press and

hold the

button. Press

and hold again to switch

back to C1.

Secondary CT (CT2):

Hold the

button to set

the CT secondary option:

0.1A.(Not Configurable)

The CT Rate is the primary rate/ratio of the CT.
For Example: 200/100mA Current Transformers , so the CT Rate
would be 0200 and the CT2 would be 0.1A.

4.6

The PT option sets the Secondary Voltage (PT2 100-500V) of the
Voltage Transformer (PT) that may be connected to the meter.

Use the

and

buttons to select the menu

option. The screen will show

the current setting.The

default value is 400V.

Secondary PT Setting:

Hold the

button to set

the PT secondary option:

100-500V.

Set the PT Ratio Value:

Hold the

button to

enter the PT Ratio setting

screen. The range is from

0001 to 9999.

The PT Rate is the PT Primary divided by the PT Secondary. For
Example: Voltage Transformer - 11000÷110=100, so the PT Rate
would be 0100 and the PT2 would be 110.