Eastron SDM630MCT-MOD-MID - DIN Rail Smart Energy Meter Manual

Introduction

This document provides operating, maintenance and installation instructions. This unit measures and displays the characteristics of Single Phase Two Wire (1P2W), Three Phase Three Wire (3P3W) and 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 1A or 5A 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 Pulse and 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).

Unit Characteristics

The SMARTRAIL X835 can measure and display:

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

Current Transformer Primary Current

This unit requires configuring to operate with the appropriate curren transformer(s), the optional secondary currents are 1A or 5A. It is programmed by inputting the ratio (CT Primary divided by the CT Secondary). It can be used on primary currents up to 6000A.
On the MID Version, you can only program the CT Rate ONCE.

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.

Pulsed Outputs

The SMARTRAIL X835 has Two Pulsed Outputs that can be set for active (kWh) or reactive (kVArh) energy. Terminals 9 & 10 (Pulse 1) are configurable within the setup menu.
Terminals 11 & 10 (Pulse 2) have a fixed output of 3200imp/kWh.

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:

	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.

Voltage and Current

Each successive press of the button selects a new parameter:

	Phase to neutral voltages.
	Current on each phase.
	Phase to neutral voltage THD%.
	Current THD% for each phase.

Please note the register is 9999999.9 display over two lines.

Set Up

Set up Entry Methods

Some menu items, such as Password and CT, require a fourdigit number entry while others, such as supply system, require selection from a number of menu options.

Menu Option Selection

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.

DIT (Demand Integration Time)

This sets the period (in minutes) in which the Current and Power readings are integrated for maximum demand measurement. The options are off; 5; 10; 15; 30 or 60 minutes.

Supply System

The unit has a default setting of 3 Phase 4 Wire (3P4W).
Use this section to set the type of electrical system.

	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.

Hold the button to confirm your adjustment. Hold the button for 3 seconds to exit the set up menu.

CT Configuration

The CT options set the Secondary Current (CT2 5A or 1A) of the Current Transformer (CT) that are used with the meter.

	Use the and buttons to select the menu option. The screen will show the current setting.
	Secondary CT Setting: Hold the button to set the CT secondary option: 5A (default) or 1A.
	Set the CT Ratio Value: Hold the button to enter the CT Ratio setting screen. The range is from 0001 to 9999.

The CT Rate is the CT Primary divided by the CT Secondary. For Example: 200/5A Current Transformers - 200÷5=40, so the CT Rate would be 0040 and the CT2 would be 5.
On the MID Version, you can only program the CT Rate ONCE.

CT Reversal

If the CT connections are incorrectly wired, they can be reversed through the "Set System Continued" menu:

	Use the and buttons to select the menu option. Hold the button to view the sub-menu.
	This screen will display, you can change "Forward" to "Reverse" on each individual CT connection.
	Hold the button to confirm your adjustment. You can then move on to IB or IC using the and buttons.

Hold the button for 3 seconds to exit the set up menu.

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.

Pulsed Output

Use this section to configure the Pulsed Output Type. Units: kVArh (default); kWh.

	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. Hold the button to confirm the selection.

Hold the button for 3 seconds to exit the set up menu.

Pulse Rate

You can configure the number of pulses to relate to a defined amount of Total Energy.
Please note there are limitations that need to be factored in when setting the pulsed output. This is based upon the relay output only being able to pulse 2 times per second.
For example, If the CT is set to 500/5A on a Single Phase network this would generate (500Ax230V=115,000 / 1000) 115kWh which is 31W per second. A setting of 10IMP/kWh (10 pulses per kWH) would generate 3 pulses per second. This will exceed the 2 pulse per second limitation.
Pulse settings: 1 Pulse per: 10W (0.01) / 100W (0.1) / 1000W/1kWh (1) / 10kWh (10) / 100kWh (100) /1000kWh

	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 choose the desired pulse rate. To save the new setting, hold the button for 3 seconds until the selection stops flashing.

Pulse Duration

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

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.

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.

CLR

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

	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.

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

Specifications

Measured Parameters

The unit can monitor and display the following parameters of a Single Phase Two Wire (1P2W), Three Phase Three Wire (3P3W) or Three Phase Four Wire (3P4W) system.

Voltage and Current

Power factor and Frequency and Max. Demand

Energy Measurements

Imported/Exported active energy	0 to 9999999.9 kWh
Imported/Exported reactive energy	0 to 9999999.9 kVArh
Total active energy	0 to 9999999.9 kWh
Total reactive energy	0 to 9999999.9 kVArh

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 Three 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 AC RMS.

Accuracy

Voltage	0·5% of range maximum
Current	0·5% of nominal
Frequency	0·2% of mid-frequency
Power factor	1% of unity (0.01)
Active power (W)	±1% of range maximum
Reactive power (VAr)	±1% of range maximum
Apparent power (VA)	±1% of range maximum
Active energy (Wh)	Class 1 IEC 62053-21
Reactive energy (VARh)	±1% of range maximum
Total harmonic distortion	1% up to 31st harmonic
Response time to step input	1s, typical, to >99% of final reading, at 50 Hz.

Auxiliary Supply

Two-way fixed connector with 2.5mm² stranded wire capacity. 85-275V AC 50/60Hz ±10% or 120-380V DC ±20%.
Consumption <2W 10VA.

Interfaces for External Monitoring

Three interfaces are provided:

The Modbus configuration (baud rate etc.) and the pulse relay output assignments (kW/kVArh) are configured through the set-up screens.

Pulse Output

Opto-coupler with potential free SPST-NO Contact (Contact rating 5-27V DC / Max current input: Imin 2mA and Imax 27mA DC). The pulse 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.

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 (default) / odd / even
Stop bits: 1 or 2
RS485 Network Address: 3 digit number - 001-247
Modbus^™ Word order Hi/Lo byte order is set automatically to normal or reverse. It cannot be configured from the set-up menu.

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	Sinusoidal (distortion factor < 0·005)
Auxiliary supply voltage	Nominal ±1%
Auxiliary supply frequency	Nominal ±1%
Auxiliary supply waveform (if AC) L1	Sinusoidal (distortion factor < 0·05)
Magnetic field of external origin	Terrestrial flux

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

Mechanics

DIN rail dimensions	72 x 94.5 mm (WxH) per DIN 43880
Mounting	DIN rail (DIN 43880)
Sealing	IP51 indoor
Material	Self-extinguishing UL 94 V-0

Declaration of Conformity

We, Eastron (Metering) Europe Limited, declare under our sole responsibility as the manufacturer that the poly phase multifunction electrical energy meter "SDM630MCT-MOD-MID" correspond to the production model described in the EC-type examination certificate and to the requirements of the Directive 2004/22/EC EC type examination certificate number 0120/SGS0142.
Identifcation number of the NB 0120.

Dimensions

Installation

Single phase two wires

Three phase four wires

Three phase four wires