Integra Ri3 User manual

INTEGRA Ri3 digital metering system
DIN Rail Digital Energy Meter for
Single- and Three-phase Electrical Systems
Installation and Operating Instructions

2
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
Important safety information is contained in the
Maintenance section. Familiarise yourself with this
information before attempting installation or other
procedures.

Contents
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Contents
1Introduction 5
1.1 Unit Characteristics..................................................................5
1.2 Current Transformer Primary Current......................................5
1.3 RS485 Serial - Modbus™ or JC N2Protocol............................5
1.4 Pulse Output ............................................................................6
2Start Up Screens 6
3Measurements 6
3.1 Voltage and Frequency ...................................................6
3.2 Current ............................................................................7
3.3 Power and Power Factor .................................................7
3.4 Energy Measurements ....................................................7
4Setting Up 8
4.1 Set-up Menu Structure.............................................................8
4.2 Set-up Entry Methods ..............................................................9
4.2.1 Menu Option Selection.............................................................9
4.2.2 Number Entry Procedure .........................................................9
4.3 Change Password..................................................................10
4.4 Supply System.......................................................................10
4.5 dIT Demand Integration Time ................................................11
4.6 CT..........................................................................................11
4.7 RSET - Reset.........................................................................12
4.8 Communications....................................................................12
4.9 Pulse Output ..........................................................................15
4.10 Energy Units and 1% Limit.....................................................17
4.11 Test........................................................................................18
4.12 Version Information................................................................20
5Specification 21
5.1 Measured Parameters ...........................................................21
5.1.1 Voltage and Frequency..........................................................21
5.1.2 Current...................................................................................21
5.1.3 Power and Power Factor .......................................................21
5.1.4 Energy Measurements...........................................................21
5.2 Measured Inputs ....................................................................21
5.2.1 Range of Use.........................................................................22
5.3 Accuracy................................................................................22

Contents
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5.4 Auxiliary Supply......................................................................22
5.5 Interfaces for External Monitoring ..........................................23
5.5.1 Pulse Relay Output ................................................................23
5.5.2 RS485 Output for Modbus™ or JC N2 Protocol....................23
5.6 Reference Conditions of Influence Quantities........................24
5.7 Environment...........................................................................24
5.8 Mechanics..............................................................................24
5.9 Approval, Certification, and Standards Compliance...............24
6Maintenance 25
7Installation 26
7.1 Safety.....................................................................................26
7.2 EMC Installation Requirements..............................................26
7.3 Case Dimensions...................................................................27
7.4 Wiring.....................................................................................27
7.4.1 Additional considerations for three wire systems...................28
7.5 Auxiliary Supply......................................................................28
7.6 Fusing.....................................................................................28
7.7 Earth/Ground Connections.....................................................28
7.8 Connection Diagrams.............................................................28
7.9 RS485 and Modbus™ or JC N2 Protocol...............................29
7.10 Operation Check ....................................................................29
8Glossary 30
9Index 31

Introduction
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1 Introduction
This document provides operating, maintenance and installation instructions for the Crompton
Instruments Integra Ri3 DIN rail mounted energy meter. The unit measures and displays the
characteristics of single phase, three-phase 3-wire or three-phase 4-wire supplies, including
voltage, frequency, current, power and real and reactive energy, imported or exported. Energy is
measured in terms of Wh, kWh, MWh, VArh, kVArh and MVArh, since it was last reset. 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 to the supply required to power the
product. The requisite current input(s) are obtained via current transformers (CT).
The Ri3 can be configured to work with a wide range of CTs, giving the unit a wide range of
operation. Built-in interfaces provide pulse and RS485 Modbus™/JC N2 outputs. Configuration is
password-protected.
The unit can be powered from a separate auxiliary (a.c. or d.c.) supply. Alternatively it can be
powered from the monitored supply, where appropriate.
1.1 Unit Characteristics
The Ri3 can measure and display:
Line voltages 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 (Wh, kWh or MWh) imported and exported
Reactive Energy (VArh, kVArh or MVArh) imported and exported
The unit has password-protected set-up screens for:
Changing password.
Supply system selection 1ph, 3ph3w or 3ph4w.
CT primary current (1 to 9999A)
Demand interval time
Reset for cumulative energy and demand measurements
Pulse output duration and rate divisor
RS485 serial Modbus™ or JC N2 format
A pulsed relay output indicates real-time energy measurement. An RS485 output allows remote
monitoring from another display or a computer.
1.2 Current Transformer Primary Current
The unit can be configured to operate with CT primary current of between 1 and 9999A. Maximum
CT primary current corresponds to a maximum input current to the unit of 5A.
1.3 RS485 Serial - Modbus™ or JC N2Protocol
This uses an RS485 serial port with Modbus™ or Johnson Controls (JC) N2 protocol to provide a
means of remotely monitoring and controlling the Ri3 unit.
Set-up screens are provided for setting up the RS485 port. See Section 4.8.

Measurements
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1.4 Pulse Output
This provides a relay pulse output that clocks up measured active (Wh) or reactive (VArh) energy.
The unit can produce one pulse for preset quantity of energy imported or exported. The pulse
divisor and pulse width can be set from the Set-up menu as detailed in Section 0.
2 Start Up Screens
The first screen lights 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. This example shows a firmware version of 2.510
and a build number of 21.07.
Next the unit performs a self-test and indicates if the test passes.
After a short delay, the last-used measurement screen appears.
3 Measurements
The buttons operate as follows:
Selects the Voltage and Frequency display screens.
In Set-up mode, this is the ‘Back’ button.
Selects the Current display screens.
In Set-up mode, this is the ‘Up’ button.
Selects the Power and Power Factor screens.
In Set-up mode, this is the ‘Down’ button.
Selects the Energy display screens.
In Set-up mode, this is the ‘Enter’ button.
3.1 Voltage and Frequency
Each successive pressing of the button selects a new range:
Phase to neutral voltages (not 3p3w mode)
Voltages between phases (three phase supplies only)
Frequency in Hz

Measurements
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Percentage total voltage harmonic distortion (THD%) for each phase to N (not 3p3w mode)
Percentage voltage THD% between phases (three phase supplies only)
3.2 Current
Each successive pressing of the button selects a new range:
Current on each phase
Neutral current (three phase supplies only)
Maximum demand currents on each phase since the last Demand reset
Maximum neutral demand current since the last Demand reset (three phase supplies only)
Current THD% for each phase
3.3 Power and Power Factor
Each successive pressing of the button selects a new range:
Instantaneous power:
Power in kW or MW
Reactive Power in kVAr or MVAr
Volt-amps in kVA or MVA
Maximum demanded power since last Demand reset
Power factor
The unit automatically chooses an appropriate unit of power (x1, kilo or Mega).
If the 1% Limit option is set to On (Section 4.10), readings below 1% of maximum for the range will
be displayed as zero.
3.4 Energy Measurements
Each successive pressing of the button selects a new range:
Imported energy in kWh or MWh
Exported energy in kWh or MWh
Imported reactive energy in kVArh or MVArh
Exported reactive energy in kVArh or MVArh
This is a two-line display that can indicate up to 9999999.9. This
example shows that 20133.7 kWh of energy has been imported since the
last energy hours reset.
The blue man symbol flashes during the accumulation of Wh or VArh
data at a rate determined by the associated instantaneous power
parameter.
The displayed unit/kilo/mega (e.g. Wh, kWh or MWh) parameter is set in Set-up mode (see Section
4.10).
If the 1% Limit option is set to On (Section 4.10). readings below 1%of range maximum will not be
included in the energy computation, to prevent meter ‘creep’. The 1% symbol appearing in the
bottom left-hand corner of the display indicates that the 1% Limit option is off and that power
values below 1% of range maximum will accrue to the total energy value.

Setting Up
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4 Setting Up
To enter set-up mode, firmly press the and buttons simultaneously and hold for about 5
seconds, until the password screen appears. Setting up is password-protected so you must enter
the correct password (default ‘0000’) before proceeding. If an incorrect password is entered, the
display reverts to measurement mode.
To exit setting-up mode, press repeatedly until the measurement screen is restored or hold
and buttons simultaneously for 5 seconds.
4.1 Set-up Menu Structure
Change password
nnnn 4-digit number – default ‘0000’.
Supply system
3-phase 4-wire
3-phase 3-wire
single phase.
CT Set the value of the CT primary in use
nnnn – 4-digit number 0001 to 9999.
dIT Demand Integration Time
This is the period in minutes over which the current and power readings are integrated for
maximum demand measurement. Options are: Off, 5, 8, 10, 15, 20, 30 and 60 minutes.
RSET Resets cumulative Energy and/or Demand measurement to zero.
COMS - Communication parameters for RS485 interface
FMT - Format
Modb - Modbus™ protocol
Baud rate 2400/4800/9600/19200/38400
Parity none/odd/even
Stop bits 1 (1 or 2 if parity is None)
RS485 network address nnn – 3-digit number, 1 to 247
Order::Norm/Rev – Indicates if the Modbus™ word order is normal or reversed.
N2 Johnson Controls (JC) N2 protocol
RS485 network address nnn – 3-digit number, 1 to 255.
Rly - Relay pulse output
kWh/kVArh (Active/reactive) Import or Export
Rate 0.001/0.01/0.1/1/10/100/1k/10k kWh or kVArh per pulse
Pulse width 200/100/60 ms.
NRGy - Energy
Unit/kilo/Mega units selection
1% limit on/off. If on, power values <1% of range max. will not be included in energy
measurements (prevents ‘creep’).
Test Display on – all elements on to check display
dISTG Display toggle. Each element is turned on and off alternately
Phase sequence (V123 I123).
SOFT Firmware version and build numbers.

Setting Up
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4.2 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.
4.2.1 Menu Option Selection
1. Use the (up) and (down) keys to select the required item from the menu shown in
Section 4.1. Selection does not roll over between bottom and top of list.
2. Press to confirm your selection.
3. If an item flashes (shown red on these pages), then it can be adjusted by the (up) and
(down) keys. If not, there may be a further layer, e.g. Comms - Baud rate, before
adjustment is possible. Press to select the lower layer.
4. Having selected an option from the current layer, press to confirm your selection. The
SET indicator will appear.
5. Having completed a parameter setting, press to return to a higher menu level. The SET
indicator will be removed and you will be able to use the and keys for further menu
selection.
6. On completion of all setting-up, press repeatedly until the measurement screen is
restored.
4.2.2 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 (shown red on these pages) and is set using the
(up) and (down) keys.
2. Press to confirm each digit setting. The SET indicator appears after the last digit has
been set.
3. After setting the last digit, press to exit the number setting routine. The SET indicator will
be removed.

Setting Up
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4.3 Change Password
1. Use the (up) and (down) to choose the Change Password option.
2. Press to enter the change password routine. The New Password screen
will appear with the first digit flashing.
3. Use and to set the first digit and press to confirm your selection.
The next digit will flash.
4. Repeat the procedure for the remaining three digits.
5. After setting the last digit, SET will show.
6. Press to exit the number setting routine and return to the Set-up menu.
SET will be removed.
4.4 Supply System
Use this section to set the type of power supply being monitored.
1. From the Set-up menu, use the (up) and (down) keys to select the
System option. The screen will show the currently selected supply option.
2. Press to enter the Supply Selection routine. The current selection will
flash.
3. Use the (up)and (down) keys to select the required system option:
or
3-phase 4-wire 3-phase 3-wire Single phase.
4. Press to confirm your 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.