SDM630 DC USER MANUAL 2013 V1.1

SDM630 DC

Din Rail Smart Energy Meter for Single and Three Phase Electrical Systems

USER MANUAL

2013 V1.1

Important Safety Information is contained in the Maintenance section. Familiarize yourself with this information before attempting installation or other procedures.

Symbols used in this document:

Risk of Danger: These instructions contain important safety information:

Read them before starting installation or servicing of the equipment

Caution: Risk of Electric Shock

1 Introduction

This document provides operating, maintenance and installation instructions . The unit measures and displays the characteristics of single phase two wires(1p2w) , three phase three wires(3p3w,) and three phase four wires(3p4w) supplies, including voltage, frequency, current, power ,active and reactive energy, imported or exported. Energy is measured in terms of kWh, kVArh.

Maximum demand current can be measured over preset periods of up to 60 minutes. In order to measure energy,the unit requires voltage and current inputs in addition tot he supply required to power the product.

SDM630 DC 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.

1.1 Unit Characteristics

The Unit can measure and display:

 Line voltage and THD% (total harmonic distortion) of all phases



Line Frequency

 Currents, Current demands and current THD% of all phases



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

 Supply system selection 1p2w, 3p3w,3p4w

 Demand Interval Time(DIT)



Reset for demand measurements

 Pulse output duration

Two pulse output indicates real-time energy measurement. An RS485 output allows remote monitoring from another display or a computer.

1.2 RS485 Serial – Modbus RTU

This uses an RS485 serial port with Modbus RTU protocol to provide a means of remotely monitoring and controlling the Unit

Set-up screens are provided for setting up the RS485 port. Refers to section 4.8

1.3 Pulse output

This provides two pulse outputs that clock up measured active and reactive energy. The constant of SDM630 DC type for active energy is 1000imp/kWh. The pulse width for active energy can be set from the set-up menu.

JIAXING EASTRON ELECTRONIC INSTRUMENTS CO.,LTD.

TEL:0086-573-83698881/83698882 FAX: 0086-573-83698883

Web: www.eastrongroup.com

Email: [email protected]

Add: No.1369. Chengnan Road, Nanhu District, Jiaxing City, Zhejiang, China 314001.

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2. 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.

3. Measurements

The buttons operate as follows:

Selects the Voltage and Current display screens

In Set-up Mode, this is the “Left” or “Back” button.

Select the Frequency and Power factor display screens

In Set-up Mode, this is the “Up” button

Select the Power display screens

In Set-up Mode, this is the “Down” button

Select the Energy display screens

In Set-up mode, this is the “Enter” or “Right” button

3.1 Voltage and Current

Each successive pressing of the button selects a new range:


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Phase to neutral voltages

Current on each phase

Phase to neutral voltage THD%

Current THD% for each phase

3.2 Frequency and Power factor and Demand


Frequency and Power Factor (total)


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Power Factor of each phase

Maximum Power Demand

Maximum Current Demand

3.3 Power

Each successive pressing of the button select a new range:

Instantaneous Active Power in kW

Instantaneous Reactive Power in kVAr


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Instantaneous Volt-amps in KVA

Total kW, kVArh, kVA

3.4 Energy Measurements


Imported active energy in kWh

Exported active energy in kWh

Imported reactive energy in kVArh


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Exported reactive energy in kVArh

Total active energy in kWh

Total reactive energy in kVAh

4. Set-up

To enter set-up mode, pressing the appears.

button for 3 seconds, until the password screen

Setting up is password-protected so you must enter the correct password (default ‘1000’) before processing. If an incorrect password is entered, the display will show: Err


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To exit setting-up mode, press repeatedly until the measurement screen is restored.

4.1 Set-up Entry Methods

Some menu items, such as password,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 select the required item from the menu shown in section 4.1. selection does not roll over between bottom and top of list

②Press to confirm your selection

③If an item flashes, then it can be adjusted by the maybe a further layer.

and buttons. If not, there

④Having selected an option from the current layer, press

SET indicator will appear.

⑤Having completed a parameter setting, press to confirm your selection. The to return to a higher menu level. The SET indicator will be removed and you will be able to use the menu selection.

⑥ On completion of all set-up, press restored.

and buttons for further repeatedly until the measurement screen is

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:

①the current digit to be set flashes and is set using the

②Press been set.

and buttons to confirm each digit setting. The SET indicator appears after the last digit has

③After setting the last digit, press will be removed.

to exit the number setting routine. The SET indicator


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4.2 Change password

1

2

3

4

Use the password option and to choose the change

Press the to enter the change password routine. The new password screen will appear with the first digit flashing

Use and to set the first digit and press digit will flash.

to confirm your selection. The next

Repeat the procedure for the remaining three digits

5 After setting the last digit, SET will show.

6

Press removed to exit the number setting routine and return to the Set-up menu. SET will be

4.3 DIT Demand Integration Time

This sets the period in minutes over which the current and power readings are integrated for


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maximum demand measurement. The options are: off, 5, 10,15 30,60 minutes

1

From the set-up menu, use and buttons to select the DIT option. The screen will show the currently selected integration time.

2

Press to enter the selection routine. The current time interval will flash

3

Use required.

and buttons to select the time

4

Press to confirm the selection. SET indicator will appear.

5

Press to exit the DIT selection routine and return to the menu.

4.4 Supply System

Use this section to set the type of power supply being monitored.

1

From the Set-up menu, use and buttons to select the System option. The screen will show the currently selected power supply .


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2

Press to enter the selection routine. The current selection will flash

3

Use and buttons to select the required system option: 1P2(W),3P3(W) ,3P4(W)

4

Press to confirm the selection. SET indicator will appear.

5

Press to exit the system selection routine and return to the menu. SET will disappear and you will be returned to the main Set-up Menu

4.5 Pulse output

This option allows you to configure the pulse output. The output can be set to provide a pulse for a defined amount of energy active or reactive.

Use this section to set up the relay pulse output—Units: kWh , kVArh

1

From the Set-up menu, use and buttons to select the Pulse output option.

2

Press to enter the selection routine. The unit symbol will flash.


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3

Use kVArh.

and buttons to choose kWh or

4

On Completion of the entry procedure, press to return to the main set up menu.

to confirm the setting and press

4.5.1 Pulse rate

Use this to set the energy represented by each pulse. Rate can be set to 1 pulse per

0.01kWh/0.1kWh/1kWh/10kWh/100kWh.

1

(It shows 1 impulse = 10kWh/kVArh)

From the Set-up menu, use buttons to select the Pulse Rate option.

and

2

Press to enter the selection routine. The current setting will flash.

0.01/0.1/1/10/100kWh/kVarh per pulse

3

Use and procedure, press set up menu.

buttons to choose pulse rate.On Completion of the entry to confirm the setting and press to return to the main


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4.5.2 Pulse Duration

The energy monitored can be active or reactive and the pulse width can be selected as 200, 100 or 60ms.

1

(It shows pulse width of 200ms)

From the Set-up menu, use and buttons to select the Pulse width option.

2


3

Use and procedure, press set up menu.

buttons to choose pulse width.On Completion of the entry to confirm the setting and press to return to the main

4.6 Communication

There is a RS485 port can be used for communication using Modbus RTU protocol. For Modbus

RTU, parameters are selected from Front panel.

4.6.1 RS485 Address

(The range is from 0 to 247)


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4.6.2 Baud Rate

1

From the Set-up menu, use buttons to select the Baud Rate option.

and

2


3

Use and buttons to choose Baud rate 2.4k. 4.8k, 9.6k, 19.2k, 38.4k

4

On Completion of the entry procedure, press to confirm the setting and press

4.6.3 Parity

1 to return to the main set up menu.

From the Set-up menu, use buttons to select the Parity option.

and

2


3

Use and

(EVEN / ODD / NONE) buttons to choose Parity


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4

On Completion of the entry procedure, press to confirm the setting and press to return to the main set up menu.

4.6.4 Stop bits

1

From the Set-up menu, use buttons to select the Stop Bit option.

and

2


3

Use

(2 or 1) and buttons to choose Stop Bit

4

On completion of the entry procedure, press to confirm the setting and press to return to the main set up menu.

4.7 CLR

The meter provides a function to reset the maximum demand value of current and power.

1

From the Set-up menu, use buttons to select the reset option.

and

2

Press will flash.

to enter the selection routine. The dIt


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3

Press to confirm the setting and press to return to the main set up menu.

5 Specifications

5.1 Measured Parameters

The unit can monitor and display the following parameters of a single phase two wire(1p2w), three phase three wire(3p3w) or four phase four wire(3p4w) supply.

5.1.1 Voltage and Current

Phase to neutral voltages 100 to 289V a.c. (not for 3p3w supplies)

Voltages between phases 173 to 500V a.c. (3p supplies only)

Percentage total voltage harmonic distortion (THD%) for each phase to N ( not for 3p3w supplies)

Percentage voltage THD% between phases (three phase supplies only)

Current THD% for each phase

5.1.2 Power factor and Frequency and Max. Demand

Frequency in Hz

Instantaneous power:

Power 0 to 3600 MW

Reactive Power 0 to 3600 MVAr

Volt-amps 0 to 3600 MVA

Maximum demanded power since last Demand reset Power factor

Maximum neutral demand current, since the last Demand reset (for three phase supplies only)

5.1.3 Energy Measurements

Imported active energy 0 to 9999999.9 kWh

Exported active energy 0 to 9999999.9 kWh

Imported reactive energy 0 to 9999999.9 kVArh

Exported reactive energy 0 to 9999999.9 kVArh

Total active energy

Total reactive energy

0 to 9999999.9 kWh

0 to 9999999.9 kVArh

5.2 Measured Inputs

Voltage inputs through 4-way fixed connector with 2.5mm² stranded wire capacity. single phase two wire(1p2w), three phase three wire(3p3w) or four phase four wire(3p4w) unbalanced. Line frequency measured from L1 voltage or L3 voltage.

Three current inputs (six physical terminals) with 2.5mm² stranded wire capacity for connection of external CTs. Nominal rated input current 5A or 1A a.c. Rms.

5.3 Accuracy

Voltage

Current

0·5% of range maximum

0·5% of nominal


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Frequency

Power factor

Active power (W)

Reactive power (VAr)

Apparent power (VA)

Active energy (Wh)

Reactive energy (VARh)

Total harmonic distortion

Temperature co-efficient

Response time to step input

0·2% of mid-frequency

1% of unity (0.01)

±1% of range maximum



Class 1 IEC 62053-21


1% up to 31st harmonic

Voltage and current = 0.013%/°C typical

Active energy = 0·018%/°C, typical

1s, typical, to >99% of final reading, at 50 Hz.

5.4 Interfaces for External Monitoring

Three interfaces are provided:

 an RS-485 communication channel that can be programmed for Modbus RTU protocol



 an relay output indicating real-time measured energy.(configurable)

An pulse output 1000Imp/kWh

The Modbus configuration (Baud rate etc.) and the pulse relay output assignments (kW/kVArh, import/export etc.) are configured through the Set-up screens.

5.4.1 Pulse Relay Output

The pulse relay output can be set to generate pulses to represent kWh or kVArh.

Rate can be set to generate 1 pulse per:

0.01 = 10 Wh/VArh

0.1 = 100 Wh/VArh

1 = 1 kWh/kVArh

10 = 10 kWh/kVArh

100 = 100 kWh/kVArh

Pulse width 200/100/60 ms.

Relay Rating 240V ac 50mA

5.4.2 RS485 Output for Modbus RTU

For Modbus RTU, the following RS485 communication parameters can be configured from the

Set-up menu:

Baud rate 2400, 4800, ,9600, ,19200, 38400

Parity none/odd/even

Stop bits 1 or 2

RS485 network address nnn – 3-digit number, 1 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.


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5.5 Reference Conditions of Influence Quantities

Influence Quantities are variables that affect measurement errors to a minor degree. Accuracy is verified under nominal value (within the specified tolerance) of these conditions.

Ambient temperature 23°C ±1°C

Input waveform 50 or 60Hz ±2%

Input waveform

Auxiliary supply voltage

Sinusoidal (distortion factor < 0·005)

Nominal ±1%

Auxiliary supply frequency

Auxiliary supply waveform (if AC)

Magnetic field of external origin

Nominal ±1%

Sinusoidal (distortion factor < 0·05)

Terrestrial flux

5.6 Environment

Operating temperature

Storage temperature

Relative humidity

Altitude

Warm up time

-25°C to +55°C*

-40°C to +70°C*

0 to 90%, non-condensing

Up to 2000m

1 minute

Vibration

Shock

10Hz to 50Hz, IEC 60068-2-6, 2g

30g in 3 planes

*Maximum operating and storage temperatures are in the context of typical daily and seasonal variation.

5.7 Mechanics

DIN rail dimensions

Mounting

Sealing

Material

6 Dimensions

72 x 94.5 mm (WxH) per DIN 43880 ( SDM630CT)

76 x 100 mm (WxH) per DIN 43880 ( SDM630DC)

DIN rail (DIN 43880)

IP20 (minimum)

Self-extinguishing UL 94 V-0


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7.

Installation


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SDM630 DC USER MANUAL 2013 V1.1

Din Rail Smart Energy Meter for Single and Three Phase Electrical Systems

1 Introduction

2. Start-up Screens

3. Measurements

4. Set-up

5 Specifications

6 Dimensions

Installation

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