Energy Division

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Installation and Operating Manual

Switchboard Integra 1540, 1000, 0640, 0440
0340 & 0240 Digital Metering Systems

Tyco Electronics UK Limited

Crompton Instruments
Freebournes Road, Witham, Essex, CM8 3AH, UK
Tel: +44 1376 509 509
Fax: +44 1376 509 511

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 Crompton
Switchboard Integra
Multifunctional metering for
Three-phase Electrical Systems
Models 1540, 1000, 0640, 0440, 0340, 0240

Operating Instructions

Important safety information is contained in the seperate installation leaflet.

Installers must familarise themselves with this information before installation

Crompton Instruments
Freebournes Road
Witham
Essex
CM8 3AH
England

Tel: +44 (0) 1376 509 509

Fax: +44 (0) 1376 509 511
E-Mail: crompton.info@tycoelectronics.com

Integra 1540, 1000, 0640, 0440, 0340, 0240 Issue 1 04/03

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 Contents Page

1 Introduction 5

1.1 Unit Characteristics 6

1.1.1 0240 6
1.1.2 0340 6
1.1.3 0440 and 0640 6
1.1.4 1000 7
1.1.5 1540 8
1.2 Maximum Power 9
1.3 Secondary Voltage 9
1.4 Demand Calculation 9
1.5 RS485 Serial Option 10
1.6 Pulse Output Option 10
1.7 Analogue Output Option 10

2 Display Screens 11
2.1 Layout 11
2.2 Start Up Screens 11
2.3 System Screen 12
2.4 System %THD Screen 13
2.5 Line to Neutral Voltages 13
2.6 Line to Neutral Voltage %THD 13
2.7 Line to Line Voltages 14
2.8 Line to Line Voltages %THD 14
2.9 Line Currents 14
2.10 Line Currents %THD 15
2.11 Neutral Current, Frequency and Power Factor 15
2.12 Power 15
2.13 Active Energy (kWh) 16
2.14 Reactive Energy (kVArh) 16

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 Contents Page
2.15 Demand 17
2.16 Maximum Demand 17
2.17 Over Range 17
2.18 kWh and kVArh Display Range 18

2.19 Error Messages 18

3 Setting up 18

3.1 Introduction 18
3.2 Number Entry Procedure 19
3.3 Access 21
3.3.1 Access with No Password Protection 21
3.3.2 Access with Password Protection 21
3.4 Changing the Password 23
3.5 Full Scale Current 24
3.6 Potential Transformer Primary Voltage 24
3.7 Potential Transformer Secondary Value 26
3.8 Demand Integration Time 27
3.9 Resets 28
3.10 Pulsed Output, Pulse Duration 29
3.11 Pulse Rate 30
3.12 RS485 Baud Rate 31
3.13 RS485 Parity Selection 32
3.14 RS485 Modbus Address 33
3.15 Analogue Output Set Up 34
3.15.1 Introduction 34
3.15.2 Analogue Output Scaling Example 35
3.15.3 Power Factor 36
3.15.4 Phase Angle 39
3.15.5 Parameters available for analogue outputs 40
3.15.6 Reading (Parameter Selection) - A1r or A2r 41
3.15.7 Reading Top – A1rt or A2rt 42

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 Contents Page
3.15.8 Reading Bottom - A1rb or A2rb 43
3.15.9 Output Top – A1ot or A2ot 43
3.15.10 Output Bottom – A1ob or A2ob 43

4 Specification 44
4.1 Display Only Versions 44
4.1.1 Input 44
4.1.2 Auxiliary Power Supply 44
4.1.3 EMC Standards 44
4.1.4 Safety 45
4.1.5 Insulation 45
4.1.6 Environmental 45

4.1.7 Enclosure 45

4.2 Display/Transducer Combined Versions 45

4.2.1 Inputs 45
4.2.2 Auxiliary Power Supply 46
4.2.3 Measuring Ranges 47
4.2.4 Accuracy 47
4.2.5 Reference conditions of influence quantities 47
4.2.6 EMC Standards 47
4.2.7 Safety 48
4.2.8 Insulation 48
4.2.9 Environmental 48
4.2.10 Enclosure 48
4.3 Display/Tranducer Combined 1000 and 1540 48
4.3.1 Inputs 48
4.3.2 Auxiliary Power Supply 49
4.3.3 Accuracy 49
4.3.4 Reference conditions 50
4.3.5 Reference conditions of influence quantities 50

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 Contents Page
4.3.6 Nominal range of use of influence 51
quantities for measurands
4.3.7 Functional ranges 51
4.3.8 Screen 51
4.3.9 Standards 51
4.3.10 Safety 52
4.3.11 Insulation 52
4.3.12 Environmental 52
4.3.13 Enclosure 52
4.3.14 Serial Communications Option 52
4.3.15 Active Energy Pulsed Output Option 53
4.3.16 Integra 1540 Only 53

5 Basis of measurement and calculations 54

6 Serial Communications 56
6.1 RS485 Port - Modbus or JC N2 56
6.2 Modbus® Implementation 56
6.3 RS485 Implementation of Johnson Controls Metasys 60

7. Maintenance 63

8 Appendix A CE Declaration of Conformity 64

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 1 Introduction
This manual provides operating instructions for the Crompton Switchboard Integra series of
Digital Metering Systems. Some versions of the Integra incorporate the metering transducer
that provides the interface for the measurement of power supply parameters such as voltage,
current, power, frequency etc. In other versions, the display and transducer are separate,
interconnected units. The display allows the user to set up metering transducer parameters
and to monitor the measurements. Some Integra models can be supplied as either an integral
or display-only version, while others are only available in one format. This manual provides
user instructions.

A separate leaflet provides installation instructions.

Table1 lists the various models of Integra and shows their distinctive characteristics.
Table 1 Summary of Integra models

Model V A F PF kW kWh THD Analogue Serial Pulse Freq

0240 V F 45-65 Hz
0340 V A 45-65 Hz
0440 V A F 360-400 Hz
0640 V A F 45-65 Hz
1000 V A F PF kW kWh RS485 Pulse 45-65 Hz
option option
1540 V A F PF kW kWh THD Analogue RS485 Pulse
option* option option 45-65 Hz

* When used with an 1560/80 transducer that includes analogue options.

Voltage and current readings are true RMS, up to the 15th harmonic (31st for 1560/80
transducer).

The unit can be powered from an auxiliary a.c. or d.c. supply that is separate from the metered
supply. Versions of each model are available to suit 100-250V 45-65 Hz a.c./d.c. and 12-48V d.c
nominal supplies.

In this manual, the graphic

0240 0340 0440 0640 1000 1540

is used to show the models to which a screen applies. Boxes are greyed out to show models
that do not have that type of screen.

0240 0340 0440 0640 1000 1540

This example indicates that the screen only applies to Models 1000 and 1540.

0240 0340 0440 0640 1000 1540 Option

This indicates that the screen is an option on models 1000 and 1540.

Important safety information is contained in the accompanying installation instructions.

Installers must familarise themselves with this information before installation.

Integra 1540, 1000, 0640, 0440, 0340, 0240 Issue 1 04/03 5

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 1.1 Unit Characteristics

1.1.1 0240

The 0240 will display the following parameters:

• System voltage (average of all phases)

• System frequency (Hz)
• Voltage line to neutral for each phase (4-wire systems only)
• Voltage line to line for each phase (calculated in 4-wire)

The 0240 has Set-up screens for potential transformer primary

and secondary voltages.
Default display

1.1.2 0340

The 0340 will display the following parameters:

• System voltage (average of all phases)

• System current (average of all phases)
• Voltage line to neutral for each phase (4-wire systems only)
• Voltage line to line for each phase (calculated in 4-wire)
• Current in each line.

The 0340 has Set-up screens for:

Default display
• Full-scale current value
• Potential transformer primary and secondary voltages.

1.1.3 0440 and 0640

The 0440 operates on a mains frequency of 400 Hz nominal

and the 0640 at 45-65 Hz. The units can measure and display
the following parameters:
• System voltage (average of all phases)
• System current (average of all phases)
• System frequency (Hz)
• Voltage line to neutral for each phase (4-wire systems only)
• Voltage line to line for each phase (calculated in 4-wire)
Default display • Current in each line

The 0440 and 0640 have Set-up screens for:

• Full-scale current value

• Potential transformer primary and secondary voltages.

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 1.1.4 1000

The 1000 will display the following parameters:

• System voltage (average of all phases)

• System current (average of all phases)
• System frequency (Hz)
• Voltage line to neutral for each phase (4-wire systems only)
• Voltage line to line for each phase (calculated in 4-wire)
• Current in each line
• Neutral current1
Default display
• Power Factor
• Active Power (kW)
• Reactive Power (kVAr)
• Apparent Power (kVA)
• Active Energy (kWh)2
• Reactive Energy (kVArh)2
• Total System Current Demand (AD)2
• Total System Active Power Demand (kWD)2
• Maximum Total System Current Demand (AD)2
• Maximum Total System Active Power Demand (kWD)2

The 1000 has Set-up screens for:

• Full-scale current value

• Potential transformer - primary voltages.
• Demand integration time and energy/demand resets
• Pulse output duration and rate divisor (option)
• RS485 serial Modbus parameters (option)

A pulsed relay output, indicating kWh, and an RS485 ModbusTM

output are available as optional extras. The Modbus output
option allows remote monitoring from a Modbus master.

1
Neutral referenced parameters are only available when used with 4-wire and single phase
configured transducers.
2
All energy and demand measurements are importing only unless connected as exporting unit.

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 1.1.5 1540

The1540 is available either as a display unit operating in

conjunction with a 15xx measurement transducer or as a
self-contained unit incorporating a transducer. The unit can
measure and display the following:

• System voltage (average of all phases)

• System current (average of all phases)
• System frequency (Hz)
• Voltage line to neutral for each phase (4-wire systems only)
Default display • Voltage line to line for each phase (calculated in 4-wire)
• Current in each line.
• Neutral current1
• Power Factor
• Active Power (kW)2
• Reactive Power (kVAr)2
• Apparent Power (kVA)
• Active Energy (kWh)2
• Reactive Energy (kVArh)2
• Total System Current Demand (Admd)2
• Total System Active Power Demand (kWD)2
• Maximum Total System Current Demand (AD)2
• Maximum Total System Active Power Demand (kWD)2

The 1540 has Set-up screens for:

• Full-scale current value

• Potential transformer - primary and secondary voltages
(Dis 1540 and Integra 15xx)
• Potential transformer - primary voltages (self contained)
• Demand integration time and energy/demand resets
• Pulse output duration and rate divisor (option)
• RS485 serial Modbus parameters (option)
• Analogue current output (option, with separate
transducer only)
1
Neutral referenced parameters are only
A pulsed relay output, indicating kWhr (and Kvarh on the two
available when used with 4-wire and
single phase configured transducers.
part Dis 1540 and Integra 15xx combination), and an RS485
ModbusTM output are available as optional extras. The Modbus
2
All energy and demand measurements output option allows remote monitoring from another display
are importing only unless connected as (not self contained) or a Modbus master.
exporting unit.
The Analogue current output option provides a current output
that indicates the value of a chosen parameter.

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 1.2 Maximum Power

Products covered in this manual are limited to a maximum power of 360 MW. During set-up,
primary voltage and current setting are checked and the unit will not accept entries that breach
the 360 MW limit. This is covered in more detail in the sections that show primary voltage and
current set-up. The Maximum Power restriction of 360 MW refer to 120% of nominal current and
120% of nominal voltage, i.e. 250 MW nominal system power.

1.3 Secondary Voltage

0240 0340 0440 0640 1000 1540

Most of the products described in this manual allow the user to specify, within a range, the
secondary voltage of the potential transformer (PT) with which it is to be used. The exception is
the Integra 1000 and self contained Integra 1540, which has the PT secondary factory set. On the
Integra 1000/1540, the user cannot change this value.

1.4 Demand Calculation

0240 0340 0440 0640 1000 1540

The maximum power consumption of an installation is an important measurement, as most

power utilities base their charges on it. Many utilities use a thermal maximum demand indicator
(MDI) to measure this peak power consumption. An MDI averages the power consumed over a
number of minutes, reflecting the thermal load that the demand places on the supply system.

The Integra uses a sliding window algorithm to simulate the characteristics of a thermal MDI
instrument, with the demand being calculated once per minute.

The demand period can be reset, which allows synchronisation to other equipment. When it is
reset, the values in the Demand and Maximum Demand registers are set to zero.

Demand Integration Times can be set to 8, 15, 20 or 30 minutes.

The number of sub-intervals, i.e. the demand time in minutes, can be altered either by using the
Demand Integration Time set-up screen (see Section 3.8) or via the RS485 port, where available,
using the ModbusTM protocol.

During the initial period, when the elapsed time since the demands were last reset or since the
Integra was switched on is less than one minute, the maximum demands (current MaxAD and
power MaxkWD) will remain at zero and not follow the instantaneous demands.

Maximum Demand is the maximum power or current demand that has occurred since the unit
was last reset as detailed in Section 3.9 Resets.

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 1.5 RS485 Serial Option

0240 0340 0440 0640 1000 1540 Option

This option is available on two-part (separate transducer and display) units

and on 1000 and self-contained 1540 units.

This option uses an RS485 serial port with Modbus or JC NII protocol to provide a means of
remotely monitoring and controlling the Integra unit. Both protocols are supplied in the same
unit. Communications automatically configure according to the protocol that is recognized when
the master sends a message.

Where the installation comprises separate display and transducer units, the display
communicates with the transducer using a modified Modbus protocol via the RS485 port. Such
a transducer may have two such ports, either or both of which can be used for connection to a
display. Where a port is available, it can be connected to a PC for control and monitoring
purposes.

Set-up screens are provided for setting up the Modbus port. See Sections 3.12 to 3.14. These
screens are not applicable for setting up a port connected to a display unit, as the characteristics
of such a port are preset. On a two-port unit, communications settings made from an Integra
display affect the other communications port, unless the second port is also connected to a
display, in which case the changes have no effect.

1.6 Pulse Output Option

0240 0340 0440 0640 1000 1540 Option

This option provides a relay pulse output indication of measured active energy (kWh). The unit
can produce one pulse for every 1, 10 or 100kW of energy consumed. Two-part 1540 display
units operating with 1560 or 1580 transducers can also produce a pulse for every 1000 kW of
energy consumed. The pulse divisor can be set from the Set-up screen as detailed in Section
3.11 Pulse Rate. The pulse width (duration) can be set as detailed in Section 3.10 Pulsed Output,
Pulse Duration. On two part units, two pulsed outputs are available with common pulse rate
divisions and pulse widths.

1.7 Analogue Output Option

0240 0340 0440 0640 1000 1540 Option

This option is available on two-part (separate transducer and display) units and provides an
analogue current output that indicates the value of a chosen parameter. The parameter can be
chosen and set up via the set-up screen as described in Section 3.15 Analogue Output Set Up.

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 2 Display Screens

2.1 Layout

The screen is used in two main modes: display of measured

values and parameter setup.

In display mode, three measured values can be shown, one on

each row. For each row, the LED indicators show the parameter
being measured and the units.

The >> button moves between display screens.

Voltage display

In Set up mode, the top row shows an abbreviation of the

parameter name, the middle row shows the parameter value
being set and the bottom row is used for confirmation of the
entered value. In general, the key changes a parameter value
and the >> key confirms a value and moves on to the next
screen.

This example is the potential transformer primary voltage

confirmation screen.

Setup confirmation screen

The example screens shown in this manual are those relating to the 1540 models – the most
complex. The screens for simpler models are similar except that some of the parameters and
values are omitted. Section 1.1 shows the default display screens for the various models.

2.2 Start Up Screens

Initially, when power is applied to the Integra Display, two

screens will appear. The first screen lights the LED’s and can be
used as a display LED check.

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 The second screen indicates the firmware installed in the
display unit. This example states that the version is 0.008. The
version on a particular unit will differ in line with ongoing
development and improvements.

After a short delay, the default Display screen will appear.

Use the >> (Next) key to move from one screen to the next in the sequence. The sequence
depends on the supply configuration (single phase 2 or 3 wire, 3 phase 3 or 4 wire).

2.3 System Screen

0240 0340 0440 0640 1000 1540

The following sections show 3 and 4 wire systems.

Single phase 2 and 3 wire systems have similar display screens.

The system screen is the default display. It appears when the unit is energised after the start up
screens. Section 1.1 shows the default system screens for the various models.

System Average Voltage (Volts)*

System Average Line Current (Amps).

System Total Active Power (kW).

Pressing key >> moves to the next screen

* Line to Line for 3 wire systems, Line to Neutral for 4 wire and
single phase 3 wire systems.

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 2.4 System %THD Screen

0240 0340 0440 0640 1000 1540

Average % Total Harmonic Distortion for System Voltages.

Average % Total Harmonic Distortion for System Currents.

Key >> moves to next screen.

2.5 Line to Neutral Voltages

0240 0340 0440 0640 1000 1540

Three phase, four wire systems only.

Voltage Line 1 to Neutral (Volts).

Voltage Line 2 to Neutral (Volts).

Voltage Line 3 to Neutral (Volts).

Key >> moves to next screen.

2.6 Line to Neutral Voltage %THD

0240 0340 0440 0640 1000 1540

Three-phase, four wire systems only.

%THD of Line 1 Voltage to Neutral.

%THD of Line 2 Voltage to Neutral.

%THD of Line 3 Voltage to Neutral.

Key >> moves to next screen.

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 2.7 Line to Line Voltages
0240 0340 0440 0640 1000 1540

Voltage Line 1 to Line 2 (Volts).

Voltage Line 2 to Line 3 (Volts).

Voltage Line 3 to Line 1 (Volts).

Key >> moves to next screen.

2.8 Line to Line Voltages %THD

0240 0340 0440 0640 1000 1540
Three-phase, three wire systems only.

Line 1 to Line 2 Voltage %THD.

Line 2 to Line 3 Voltage %THD.

Line 3 to Line 1 Voltage %THD.

Key >> moves to next screen.

2.9 Line Currents

0240 0340 0440 0640 1000 1540

Line 1 Current (Amps).

Line 2 Current (Amps).

Line 3 Current (Amps).

Key >> moves to next screen.

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 2.10 Line Currents %THD

0240 0340 0440 0640 1000 1540

Line 1 Current %THD.

Line 2 Current %THD.

Line 3 Current %THD.

Key >> moves to next screen.

2.11 Neutral Current, Frequency and Power Factor

0240 0340 0440 0640 1000 1540

Neutral Current (Amps).

(4-wire and single phase 3 wire system only).

Frequency (Hz).

Power Factor (0 to 1, on 1000 and combined 1540; sign (-)

prefix, on 1540 two part: prefix C indicates Capacitive load and
L = Inductive).

Key >> moves to next screen.

2.12 Power

0240 0340 0440 0640 1000 1540

Reactive Power (kVAr).

Apparent Power (kVA).

Active Power (kW).

Key >> moves to next screen.

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 2.13 Active Energy (kWh)

0240 0340 0440 0640 1000 1540

This is the energy that has been consumed since the unit was last reset (see Section 3.9 Resets).

Active Energy (kWh)

7 digit reading i.e. 0001243.

Key >> moves to next screen.

2.14 Reactive Energy (kVArh)

0240 0340 0440 0640 1000 1540

This is the reactive energy that has been consumed since the unit was last reset (see Section 3.9
Resets). The reading shows the energy (kVArh) in the reactive component of the supply.

Reactive Energy (kVArh)

7 digit reading i.e. 0000102

Key >> moves to next screen.

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 2.15 Demand
0240 0340 0440 0640 1000 1540

This screen displays the present demand, i.e. the maximum power and the maximum current
demanded during the defined integration window period. See Section 3.8 Demand Integration
Time.

System Total Active Power Demand (kWD)

System Total Current Demand (AD)

Key >> moves to the next screen.

2.16 Maximum Demand

0240 0340 0440 0640 1000 1540
This screen displays the maximum power and the maximum current that has been demanded
since the unit was last reset (see Section 3.9 Resets).

Maximum System Total Active Power Demand (kWD)

Maximum System Total current Demand (AD)

Key >> returns to the start of the sequence with the System
Screen

2.17 Over Range

The displayed values must be in the range –999 x 1000 to 9999 x 1000. Any parameter value
outside this range will cause the display to show overrange.

This situation will be indicated by displaying four bars in the

appropriate line:

The value on the middle line is over range.

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 2.18 kWh and kVArh Display Range

0240 0340 0440 0640 1000 1540

The kWh and kVArh display range is limited to 9999999. If the unit is allowed to increment
beyond this value the count will either wrap back to zero (if the 1560/1580 transducer is set to 7
digit mode) or continue to be updated in the 1560/1580 transducer but the display will change to
seven bars. The value will continue to be available via the Modbus output.

2.19 Error Messages

The display repeatedly requests new values from the measurement processor. If there is a
problem obtaining these values, the display will continue to retry but will alert the user by
displaying the message Err1. This message may be seen briefly during conditions of extreme
electromagnetic interference with the normal display returning once the interference has ceased.

If the Err1 message persists, try interrupting, for ten seconds, the auxiliary supply (or supplies)
to the Integra (display and transducer). This may restore normal operation. Also check that
auxiliary power is reaching the transducer and is within specification. Check that there are no
problems with the communications cable between the display and transducer, where applicable.

3 Setting up

3.1 Introduction

The following sections give step by step procedures for configuring the Integra transducer for a
particular installation using an attached display.

To access the Set-up screens, press and hold the (Adjust) key and the >> (Next) keys
simultaneously for five seconds. This brings up the password entry stage. (See Section 3.3
Access).

On completion of the last Set-up screen, the program exits Set-up mode and returns to the last
selected Display screen. To return to the Display screens at any time during the set up
procedures, press the and the >> keys simultaneously for five seconds.

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 3.2 Number Entry Procedure

When setting up the unit, many screens require the setting up of a number, usually on the
middle row of digits. In particular, on entry to the setting up section, a password must be
entered. The procedure is as follows:

In general, press the (adjust) key to change something on the current screen. Pressing the >>
(next) key normally leaves the current screen unchanged and brings up the next screen.

The example below shows how the number 0000 can be changed to 1234.

The digits are set one at a time, from left to right. The decimal
point to the right of the digit (* in the picture) flashes to
indicate which digit can currently be changed. It thus acts as a
cursor. Where the cursor coincides with a genuine decimal
point on the display, the decimal point will flash.

Press the key to scroll the value of the first digit from 0
through to 9, the value will wrap from 9 round to 0. For this
example, set it to ‘1’.

Press the >> key to confirm your setting and advance to the
next digit.
First digit

Use the key to set the second digit to the required value.

Press the >> key to confirm your selection and advance to the
next digit.

Second digit

Use the key to set the third digit to the required value.

Press the >> key to confirm your selection and advance to the
next digit.

Third digit

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 Use the key to set the fourth digit to the required value.

Press the >> key to confirm your selection. If the unit accepts
your entry, the Confirmation screen will appear.

If the unit does not accept your entry, e.g. an incorrect

password, a rejection screen will appear, with dashes on the
bottom line.

Fourth digit

The Confirmation screen shows the entered number on the

bottom row with all decimal points showing.

If the displayed number is correct, press the >> key to move to

the next Set-up screen.

If not, press the key to return to restart the number entry.

The first digit entry screen will appear.

Confirmation

If a rejection screen appears, press the key to restart the

entry procedure.

Rejection

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 3.3 Access

To access the Set-up screens, press the and >> keys simultaneously for five seconds, until the
Password Introduction screen appears.

Password protection can be enabled to prevent unauthorised access to Set-up screens.

Password protection is not normally enabled when a product is shipped. The unit is protected if
the password is set to any four digit number other than 0000. Setting a password of 0000
disables the password protection.

3.3.1 Access with No Password Protection

Press >> from the Password Introduction screen. The 0000

password confirmation screen will appear.

Password introduction

Press >> again to proceed to the first Set-up screen.

0000 Password confirmation

3.3.2 Access with Password Protection

If the unit is protected by a password, proceed as follows:

Password introduction

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 Enter the four-digit password using the method described in
Section 3.2 Number Entry Procedure.

First digit

On pressing >> to confirm the last digit, the Confirmation

screen will appear, provided the password is correct.

From the Password Confirmation screen, there is the option of

changing the password, as described in Section 3.4 Changing
the Password.

To proceed to the first Set-up screen, press >>.

Password Confirmation

If the password is incorrect, the Password Request screen will

reappear to permit a retry. Press to start a retry or >> to exit
to the Display screens.

Password Incorrect

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 3.4 Changing the Password

The option to change the password is only available from the Password Confirmation screen
immediately after the user has entered the existing password, if applicable.

Press to start changing the password.

The password screen for the first digit will appear, with the old
password on the bottom line.

Password Confirmation

Set up the new password on the bottom line, as described in

Section 3.2 Number Entry Procedure.

On pressing >> to confirm the last digit, the Password

Confirmation screen will appear.

First new password digit

Press >> to confirm the new password. The first Set-up screen
will appear.

Press to try again. The first digit screen will appear again.

New password
confirmation

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 3.5 Full Scale Current

0240 0340 0440 0640 1000 1540

This parameter is the value of nominal Full Scale Currents that will be displayed as the Line
Currents. This screen enables the user to display the Line Currents inclusive of any transformer
ratios. The values displayed represent the current in amps. For example setting 800 on this
screen will cause the display to indicate 800 amps when the nominal maximum (typically 5A or
factory build option of 1A) current flows through the transducer current inputs.The maximum
value is as specification.

Press >> to accept the present value and move on to the next
Set-up screen (Section 3.6 Potential Transformer Primary
Voltage).

To change the Full Scale Current, press and change the

current value as detailed in Section 3.2 Number Entry
Procedure. If the presently displayed current, together with the
full scale voltage value, results in an absolute maximum power
(120% of nominal current and voltage) of greater than 360
Megawatts, the range of the most significant digit will be
restricted.

Edit The Maximum Power restriction of 360 Megawatts refers to

120% of nominal current and 120% of nominal voltage, i.e. 250
Megawatts nominal system power.

When the least significant digit has been set, pressing the >> key will advance to the Full Scale
Current Confirmation stage.

The minimum value allowed is 1. The value will be forced to 1 if the display contains zero when
the >> key is pressed.

3.6 Potential Transformer Primary Voltage

0240 0340 0440 0640 1000 1540

This value is the nominal full scale voltage which will be displayed as L1-N, L2-N and L3-N for a
four wire system, L1-2, L2-3 and L3-1 in a three wire system or system volts for single phase.
This screen enables the user to display the line to neutral and line to line voltages inclusive of
any transformer ratios. The values displayed represent the voltage in kilovolts (note the x1000
indicator). For example, on a 2.2kV system with 110V potential transformer secondary, set 2.200
at this screen.

If there is no potential transformer (PT) in the system, i.e. the voltage terminals are connected
directly to the metered voltage, leave this value unchanged and skip this set up step.

If the PT primary and secondary values are changed and it is desired to revert to a set-up with
no PT, then set both PT primary and secondary values to the nominal maximum voltage for the
Integra transducer.

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 To set up the PT primary, proceed as follows:

To accept the currently displayed value, press >>. The screen

will move on to the next Set-up screen (Section 3.7 Potential
Transformer Secondary Value).

Press to change the PT Primary voltage.

Initially all the digits of the present value will be flashing and
the decimal point position will be illuminated. This is to indicate
that initially the ‘multiplier’ must be selected. Press to set the
decimal point position.

Note that the x1000 indicator is on.

Decimal Point
Press >> to accept the displayed (decimal point position). The
digits stop flashing and the PT Primary Value screen appears

Set the display to read the value of the PT Primary voltage,

using the method described in Section 3.2 Number Entry
Procedure. The primary voltage that can be set will be
restricted to a value such that, together with the full scale
current value (previously set), the absolute maximum power
(120% of nominal current and voltage) cannot exceed 360
Megawatts.

After the last digit has been accepted, the Confirmation screen
will appear.
Digit Edit

This example confirmation screen shows a primary voltage

setting of 2.2 kV.

Press >> to accept the displayed PT Primary Voltage. The next

Set-up screen will appear (Section 3.7 Potential Transformer
Secondary Value).

To change the displayed value, press . The Decimal Point

screen will reappear.

Confirmation

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 3.7 Potential Transformer Secondary Value

0240 0340 0440 0640 1000 1540

In Model 1000 and 1540 combined, the PT Secondary Value is factory set, as marked on the
barrel. The PT Secondary Value is user programmable on the 1540 and Integra 1560 two part.

This value must be set to the nominal full scale secondary voltage which will be obtained from
the transformer when the potential transformer (PT) primary is supplied with the voltage defined
in Section 3.6 Potential Transformer Primary Voltage. This defines the actual full scale voltage
that will be obtained from the PT secondary and measured by the unit. The ratio of the full scale
primary to full scale secondary voltage is the transformer ratio. Given full scale primary and
secondary voltages, the unit knows what primary voltage to display for any given measured
secondary voltage.

The secondary voltage displayed is in volts. Following the previous example, on a 2.2 kV system
with 110V PT secondary, set this screen to 110.0.

If there is no PT associated with this unit, leave this value unchanged and skip this step.

To accept the displayed PT Secondary Voltage, press >>. The

next Set-up screen will appear (Section 3.8 Demand Integration
Time).

To change the PT Secondary Voltage display, press .

Note that the decimal point edit screen will only appear when
the display unit is connected to a transducer designed for
connection to voltages in the range 57.7 to 139V.

Initially all the digits of the present value will be flashing and
the decimal point position will be illuminated. This is to indicate
Decimal Point that initially the ‘multiplier’ must be selected.

Press to change the decimal point position.

Press >> to accept the decimal point position. The Digit Edit
screen appears.

Set the display to read the value of the PT Secondary voltage,

as described in Section 3.2 Number Entry Procedure.

After the last digit has been set and accepted, the Confirmation
screen will appear.

Digit Edit

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 Press >> to accept the displayed value. Depending on the
model, this may take you out of the Set-up screens and back to
the last selected Display screen.

Press to return to the Decimal Point screen.

The secondary value may only be set to values within the range
defined by the factory voltage build option. These nominal rms
input voltages are as shown in the relevant measurement
transducer specification (see separate document for two-part
products or Section 4.2.1 Inputs for combined products).

Confirmation

3.8 Demand Integration Time

0240 0340 0440 0640 1000 1540

This screen is used to set the period over which current and power readings are integrated (see
Section 1.4 Demand). The value displayed represents time in minutes.

To accept the displayed Demand Integration Time, press >>.

The next Set-up screen will appear (Section 3.9 Resets)

To change the Demand Integration Time, press and use this

key to scroll through the available values.

Select the required value and press >> to accept it. The
Confirmation screen will appear.

Value

Press >> to accept the displayed value . The next Set-up screen
will appear (Section 3.9 Resets).

Press to return to the Value screen and change the value.

Confirmation

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 3.9 Resets

0240 0340 0440 0640 1000 1540

The following screens allow resetting of the Energy and Demand readings individually or
altogether.

Resetting the cumulative Energy (h) resets both Active and Reactive Energy.

Resetting Demand (d) resets:

• Active Power Demand

• Current Demand
• Maximum Active Power Demand
• Maximum Current Demand

Press >> to move on to the next Set-up screen without resetting

any readings.

To reset one or more readings press . The first reset screen

(All) will appear.

Reset (None)

Use to scroll through the parameters that can be reset:

h Active and reactive energy

d Demands and maximum demands
None – no reset
All – h and d combined.

Select the option required and press >> to confirm your

selection. The appropriate confirmation screen will appear.

(The confirmation screen will not appear if None has been

Reset All selected.)

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 Press to return to the Reset screen.

Press >> to reset the selected reading(s). The next screen will
appear.

Confirmation

3.10 Pulsed Output, Pulse Duration

0240 0340 0440 0640 1000 1540 Option

This applies to the Relay Pulsed Output option only. Units with this option provide pulses to
indicate power consumption (kWh). See Section 1.6 pulse output option.

This screen allows the user to set the duration of the relay output pulse. The value displayed
represents the pulse duration in milliseconds (ms). On a two part DIS 1540/Integra 1560, this
screen will set the pulse duration for the Kvarh pulse relay (where fitted) also.

To retain the current setting, press >>. The next Set-up screen
will appear.

To change the pulse duration, press .

Use the key to scroll through the available values of 60, 100
and 200.

Select the value required and press >> to confirm your

selection. The confirmation screen will appear.

Edit

To change the value again, press . The Edit screen will

reappear.

To accept the displayed pulse duration, press >>. The next

screen will appear. Depending on the model, this may take you
out of the Set-up screens and back to the last selected Display
screen.

Confirmation

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 3.11 Pulse Rate

0240 0340 0440 0640 1000 1540 Option

This applies to the Relay Pulsed Output option only. Units with this option provide pulses to
indicate power consumption (kWh).

This screen allows setting of the kWh pulse rate divisor. On a two part DIS 1540/Integra 1560,
this screen will set the pulse rate for the kvarh pulse relay (where fitted) also. By default, the unit
produces one pulse per kWh. Changing this divisor changes the output pulse rate, as follows:

Divisor One pulse per:

1 1 kWh
10 10 kWh
100 100 kWh
1000 1000 kWh (DIS1540 with 1560/1580 only)

Press >> to accept the currently displayed value. The next

Set-up screen will then appear.

To change the pulse rate divisor, press .

Use the key to scroll the value through the available values
1, 10, 100, 1,000. If the maximum power is greater than 3.6
megawatts, the range of divisors will be restricted to force an
upper limit to the number of pulses/hour of 3600.

Select the required divisor and press >> to confirm your

selection. The Confirmation screen will appear.

Edit To change the value again, press . The Edit screen will
reappear.

To accept the displayed value, press >>. The next Set-up screen
will appear.

Confirmation

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 3.12 RS485 Baud Rate

0240 0340 0440 0640 1000 1540 Option

Use this screen to set the Baud Rate of the RS485 Modbus/JC NII port. The values displayed are
in kbaud.

Where the transducer unit may be separate from the display unit, the transducer has two
Modbus ports, at least one of which may be used for communicating with a display. The RS485
Baud Rate option only sets the Baud Rate for a port that is not communicating with a display
unit. The port characteristics for communication with a display are preset. If the JC NII protocol
is to be used, the baud rate must be set to 9.6.

If a display is detected on an RS485 port at start-up, any user settings for that port will be
ignored.

Press >> to accept the currently displayed value. The next

Set-up screen will then appear.

To change the baud rate, press .

Use the key to scroll through the available values 2.4, 4.8, 9.6
and 19.2.

Select the required baud rate and press >> to confirm your
selection. The Confirmation screen will appear.

Edit

Press >> to accept the new setting. The next Set-up screen will
appear.

To change the value again, press . The Edit screen will

reappear.

Confirmation

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 3.13 RS485 Parity Selection

0240 0340 0440 0640 1000 1540 Option

This screen allows setting of the parity and number of stop bits of the RS485 Modbus/JC II port.

Where the transducer unit is separate from the display unit, the transducer has two Modbus
ports, one of which may be used for communicating with a display. The RS485 Parity Selection
option only sets the parity for a port that is not communicating with a display unit. The port
characteristics for communication with a display are preset.

If the JC NII protocol is to be used, this parameter must be set to No parity and One stop bit.

Press >> to accept the currently displayed value. The next Set-
up screen will then appear.

To change the parity press .

Use the key to scroll through the available values:

odd – odd parity with one stop bit

E – even parity with one stop bit
no 1 – no parity one stop bit,
no 2 – no parity two stop bits.
Edit
Select the required setting and press >> to confirm your
selection. The Confirmation screen will appear.

Press >> to accept the new setting. The next Set-up screen will
appear.

Press to return to the Edit screen.

Confirmation

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 3.14 RS485 Modbus Address

0240 0340 0440 0640 1000 1540 Option

This screen allows setting of the Modbus/JC NII device address for the instrument.

Where the transducer unit is separate from the display unit, the transducer has two RS485 ports,
one of which may be used for communicating with a display. The Address option only sets the
address for a port that is not communicating with a display unit. The port characteristics for
communication with a display are preset.

Press >> to accept the currently displayed value. The next

Set-up screen will then appear.

To change the address, press .

Set the three-digit address using the method described in

Section 3.2 Number Entry Procedure. The range of the
allowable addresses is 1 to 247. The range of selectable digits
is restricted so that no higher number can be set.

Press >> to confirm your selection. The Confirmation screen

will appear.
Edit

If the new address is correct, press >>. Depending on the

model, this may take you out of the Set-up screens and back to
the last selected Display screen.

If the new address is not correct, press to return to the Edit

screen.

Confirmation

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 3.15 Analogue Output Set Up
0240 0340 0440 0640 1000 1540 Option
This is an option on Models 1540 that have separate (1560 or 1580) transducers.

3.15.1 Introduction

This applies to the analogue output option only, allowing the parameter to be selected, and the
upper and lower limits adjusted, for either one or two channels.
For each analogue output fitted, provision is made for five values to be user selected. These are:

• A1r – Parameter, from Table 2. This is the measured input that is to be represented by the
analogue output, for example, Watts or Frequency.
• A1rt – Reading Top. This is the value of the electrical parameter that will cause the analogue
output to produce ‘Output Top’.
• A1rb – Reading Bottom. This is the value of the electrical parameter that will cause the
analogue output to produce ‘Output Bottom’.
• A1ot – Output Top. This is the value of output that will be reached when the measured
electrical parameter is at the reading top value.
• A1ob – Output Bottom. This is the value of output that will be reached when the measured
electrical parameter is at the reading bottom value.

To aid understanding, a simple example is shown in Section 3.15.2.

3.15.1.1 Second Channel

The screens following show the set-up for the first analogue channel. Set-up of the second
analogue output is identical except that screens show ‘A2’ instead of ‘A1’, i.e. A2r, A2rt, A2rb,
A2ot, A2ob.
At the end of the set up for the second analogue output pressing >> will exit the set up system
and enter the display mode.

3.15.1.2 Reverse Operation

It is possible to set reading top below reading bottom. In the example of Section 3.15.2, setting
reading top to 95 volts and reading bottom to 135 volts would cause the output current to
decrease from 20mA to 4mA as the measured voltage increased from 95 to 135 volts.

3.15.1.3 Reduced output range

Note that if the output values are adjusted to reduce output range, accuracy may be degraded.
For example, if a 0-20mA capable output is set to operate over 0-1mA, then the specified
accuracy will be degraded by a factor of 20.

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 3.15.2 Analogue Output Scaling Example

In this example, the Integra has an output current range of 0 to 10mA and it is required that this
output range represents a reading range of 95 to 135V.

Example
Output top 10mA 135V Reading top

Analogue Output Reading Value

current from unit represented by Output

Output bottom 0mA 95V Reading bottom

3.15.2.1 Reading (A1r or A2r)

The measured electrical parameter that the analogue output will represent.
Example: Volts Ave (Average Voltage)
As shown in Table 2, any continuously variable parameter (volts, amps, watts etc) can be
selected for output as an analogue value. The table also shows those values that may be signed
(where the value may go negative).

3.15.2.2 Reading Top (A1rt or A2rt)

This is the value of the electrical parameter that will cause the analogue output to produce
‘Output Top’.
Example: 135 volts.

3.15.2.3 Reading Bottom (A1rb or A2rb)

This is the value of the electrical parameter that will cause the analogue output to produce
‘Output Bottom’.
Example: 95 volts.
This value may be set to any value between zero and 120% of nominal. (Or between –120% and
+120% of values that may be signed for example VAr)

3.15.2.4 Output

The two Output values specify the analogue current outputs that will represent the top and
bottom Reading values. They are included to allow additional versatility where particular
requirements prevail or to convert a 0-20mA output to 4-20mA. However it is suggested that, in
most other cases, these values should be set to the limits that the hardware can cover. The
range of the analogue output(s) for the unit is marked on the product label.

3.15.2.5 Output Top (A1ot or A2ot)

This is the value of output that will be reached when the measured electrical parameter is at the
reading top value.
Example: 10mA.

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 3.15.2.6 Output Bottom (A1ob or A2ob)

This is the value of output that will be reached when the measured electrical parameter is at the
reading bottom value.
Example: 0mA

3.15.2.7 Summary

In the above example, the analogue output will be 0 mA when the average voltage is 95 volts,
5 mA at 115 volts and 10 mA at 135 volts.

3.15.3 Power Factor

When analogue output current is used to represent power factor, it can indicate the power factor
for an inductive or capacitive load on imported or exported power. This can be shown in two
dimensions as follows:

The polarity of the power factor reading indicates the direction of power flow:

Positive PF relates to imported power

Negative PF relates exported power.

This assumes that the unit is connected for a predominantly ‘import’ application. See Installation
sheet for further details.

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 When setting up the analogue output for a power factor reading, the Reading Top value must be
in one of the left-hand quadrants and the Reading Bottom value must be in one of the right-
hand quadrants.

Hence, if the Reading Top value is set to –0.5, this will be a power factor of 0.5 for power
exported to an inductive load (bottom left-hand quadrant). Conversely, the Reading Bottom
value must be in one of the two right-hand quadrants. If the Reading Bottom value is set to –0.5,
this will be a power factor of 0.5 for power exported to a capacitive load (bottom right-hand
quadrant). Thus a power factor of +1 (for true power imported to a resistive load) is always
included in the analogue output range.

In specifying the Output Top and Output Bottom values, there are two conventions – one for
European areas of influence and one for North American areas. The two conventions are:

Europe Output Top greater or more positive than Output Bottom.

USA Output Top less or more negative than Output Bottom.

The examples below show cases where power is only imported and the load may be either
capacitive or inductive. The Reading Top and Reading Bottom values of zero ensure that the
whole range of possible (import) power factor readings is covered. The unit in the left-hand
example has an analogue output range of +1 to –1 mA and, since the Output Top value (+1 mA)
is more positive than the Output Bottom value (-1 mA), this arrangement complies with the
European convention. The right-hand example shows the North American convention.

In the above symmetrical arrangement, 0 mA corresponds to unity power factor. This is not the
case with the following asymmetrical arrangement.

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 In the example above, the unit has an analogue output range of 0 to 1 mA, all power is imported
and the load is inductive. The 1 mA Output range covers a reading power factor range of 0.6,
from 0.9 capacitive to 0.5 inductive. The capacitive overlap is provided in case of over-
compensation of power factor. The Output to Reading correlation is as follows:

Reading European Convention North American Convention

Output Output
0.9 PF cap. 0 mA 1 mA
1 PF 0.167 mA 0.833 mA
0.9 PF ind. 0.333 mA 0.667 mA
0.8 PF ind. 0.500 mA 0.500 mA
0.7 PF ind. 0.667 mA 0.333 mA
0.6 PF ind. 0.833 mA 0.167 mA
0.5 PF ind. 1 mA 0 mA

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 In this example, the unit is set to represent the full range of inductive and capacitive loads on
imported and exported power. The unit has an analogue output range of –1 to +1 mA. Both
Reading Top and Reading Bottom are set to –1 power factor.

3.15.4 Phase Angle

The Phase Angle analogue outputs are treated in a similar manner to Power Factor, with values
specified in degrees. The following figure shows the relationship between phase angle in
degrees and power factor.

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 3.15.5 Parameters available for analogue outputs

Table 2 Analogue output parameter selection

Parameter Parameter 3Ø 3Ø 1Ø 1Ø +/-

Number 4 wire 3 wire 3 wire 2 wire
1 Volts 1 (L1 – N 4W or L1 – L2 3W) ✓ ✓ ✓ ✓
2 Volts 2 (L2 – N 4W or L2 – L3 3W) ✓ ✓ ✓
3 Volts 3 (L3 – N 4W or L3 – L1 3W) ✓ ✓
4 Current 1 ✓ ✓ ✓ ✓
5 Current 2 ✓ ✓ ✓
6 Current 3 ✓ ✓
7 Watts Phase 1 ✓ ✓ ✓ ✓
8 Watts Phase 2 ✓ ✓ ✓
9 Watts Phase 3 ✓ ✓
10 VA Phase 1 ✓ ✓ ✓
11 VA Phase 2 ✓ ✓
12 VA Phase 3 ✓
13 VAr Phase 1 ✓ ✓ ✓ ✓
14 VAr Phase 2 ✓ ✓ ✓
15 VAr Phase 3 ✓ ✓
16 Power Factor Phase 1 ✓ ✓ ✓ ✓
17 Power Factor Phase 2 ✓ ✓ ✓
18 Power Factor Phase 3 ✓ ✓
19 Phase Angle Phase 1 ✓ ✓ ✓ ✓
20 Phase Angle Phase 2 ✓ ✓ ✓
21 Phase Angle Phase 3 ✓ ✓
22 Volts Ave ✓ ✓ ✓ ✓
24 Current Ave ✓ ✓ ✓ ✓
25 Current Sum ✓ ✓ ✓ ✓
27 Watts Sum ✓ ✓ ✓ ✓ ✓
29 VA Sum ✓ ✓ ✓ ✓
31 VAr Sum ✓ ✓ ✓ ✓ ✓
32 Power Factor Ave ✓ ✓ ✓ ✓ ✓
34 Average Phase Angle ✓ ✓ ✓ ✓ ✓
36 Frequency ✓ ✓ ✓ ✓
43 W Demand Import ✓ ✓ ✓ ✓
44 W Max. Demand Import ✓ ✓ ✓ ✓
53 A Demand ✓ ✓ ✓ ✓
54 A Max. Demand ✓ ✓ ✓ ✓
101 V L1-L2 (calculated) ✓ ✓
102 V L2-L3 (calculated) ✓

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 Parameter Parameter 3Ø 3Ø 1Ø 1Ø +/-
Number 4 wire 3 wire 3 wire 2 wire
103 V L3-L1 (calculated) ✓
104 Average Line to Line Volts ✓ ✓
113 Neutral Current ✓ ✓ ✓
118 THD Volts 1 ✓ ✓ ✓ ✓
119 THD Volts 2 ✓ ✓ ✓
120 THD Volts 3 ✓ ✓
121 THD Current 1 ✓ ✓ ✓ ✓
122 THD Current 2 ✓ ✓ ✓
123 THD Current 3 ✓ ✓
125 THD Voltage Mean ✓ ✓ ✓ ✓
126 THD Current Mean ✓ ✓ ✓ ✓

3.15.6 Reading (Parameter Selection) - A1r or A2r

Use this screen to choose the parameter that the analogue

Output current will represent. The number displayed on the
screen is the Parameter Number shown in Table 2.

If the displayed Parameter Number is already correct, press >>

to move on to the next Set-up screen.

To change the Parameter Number, press and set the three-

digit number using the method described in Section 3.2
Number Entry Procedure.
Parameter Selection
Press >> to confirm your selection. The Confirmation screen
will appear.

If the new Parameter Number is correct, press >>. The next

Set-up screen will appear.

If not, press . You will be returned to the Parameter Selection

screen.

Confirmation

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 3.15.7 Reading Top – A1rt or A2rt

The top reading is limited to 120% of the nominal maximum value of the parameter. For
example, a 230V nominal can be adjusted from 0 to 276V. The minimum is zero or –120% if the
parameter is signed.

This screen allows a negative value to be specified as the top

reading. It will only be available if the parameter selected on
the previous screen can be negative. For these parameters, the
+/- column of Table 2 has a tick (✓).

To accept the current value (‘-‘ for negative, no symbol for

positive), press >> to advance to the Alrb screen.

Use to select the ‘-‘ sign for a negative Reading or no symbol

for a positive Reading.

Press >> to accept the current sign and advance to the next
Sign edit screen.

Use this screen to set the position of the decimal point.

This screen will not appear when the selected parameter is
frequency, as there is no choice of decimal point position.

Pressing the key will advance the decimal point position to

the right, illuminating the x1000 indicator as necessary and
wrapping the decimal point position when the highest available
position for the currently selected reading has been exceeded.
(Maximum resolution is 3 digits of the metered value.)

Select the required decimal point position and press >> to

Decimal Point Position confirm your selection. The next screen will appear.

Use this screen to set the value of the Reading Top

Set the three-digit Reading Top value using the method

described in Section 3.2 Number Entry Procedure.

Press >> to confirm your selection. The Confirmation screen

will appear.

Value Entry

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 Press >> to accept the displayed Reading Top value, The next
Set-up screen will appear.

Press to return to the Edit screen.

Confirmation

3.15.8 Reading Bottom - A1rb or A2rb

Use these screens to specify the minimum or most negative value for the Reading Bottom value.

The method of setting the Reading Bottom screens is the same as for setting the Reading Top
screens, as described in Section 3.15.7. The Reading Bottom screens show A1rb (or A2rb for the
Analogue output 2) on the top line.

3.15.9 Output Top – A1ot or A2ot

Use these screens to set the maximum analogue output current (in mA). This current will
represent the highest reading value. You cannot specify a greater current than the actual value
that the unit can supply, e.g. 1 mA.

The method of setting the Output Top screens is the same as for setting the Reading Top
screens, as described in Section 3.15.7. The Output Top screens show A1ot (or A2ot for the
Analogue output 2) on the top line.

3.15.10 Output Bottom – A1ob or A2ob

Use these screens to set the minimum or most negative analogue output current (in mA). This
current will represent the lowest or most negative reading value. The current cannot be set to a
value that exceeds the actual capability of the unit, e.g. it cannot be set it to –10 mA if the unit
can only handle –1 mA.

The method of setting the Output Bottom screens is the same as for setting the Reading Top
screens, as described in Section 3.15.7. These screens show A1ob (or A2ob for Analogue output
2) on the top line.

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 4 Specification
The parameters listed in this section apply only to those models that can measure those
parameters.

4.1 Display Only Versions

4.1.1 Input
RS485 Dedicated to Crompton Integra transducers

4.1.2 Auxiliary Power Supply

The unit can be powered from an auxiliary a.c. or d.c. supply that is separate from the metered
supply. Versions of the unit are available to suit 100-250V 45-65 Hz a.c./d.c. and 12-48V d.c
supplies.

4.1.2.1 High Voltage version

Standard nominal supply voltages 100 - 250V a.c. nominal ± 15% (85V a.c. absolute
minimum to 287V a.c. absolute maximum) or
100 - 250V d.c. nominal -15%, +25% (85V d.c. absolute
minimum to 312V d.c. absolute maximum)
A.C. supply frequency range 45 to 66 Hz or 360 to 440 Hz (Model 0440)
A.C. supply burden 4VA approx.

4.1.2.2 Low Voltage version

D.C.supply 12 - 48V d.c. -15% + 25% (10.2V d.c. absolute minimum
to 60V d.c. absolute maximum)
D.C. supply burden 4VA approx.

4.1.3 EMC Standards

EMC Immunity EN61326 for Industrial Locations to performance
criterion A
EMC Emissions EN61326 to Class A - Industrial

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 4.1.4 Safety
IEC1010-1 (BSEN 61010-1) Permanently connected use, Normal Condition Installation category
III, pollution degree 2, Basic Insulation 300V RMS maximum. Auxilary circuits (12-48V auxiliary,
communications, relay and analogue outputs, where applicable) are separated from metering
inputs and 100-250V auxiliary circuits by at least basic insulation. Such auxiliary circuit terminals
are only suitable for connection to equipment which has no user accessible live parts. The
insulation for such auxiliary circuits must be rated for the highest voltage connected to the
instrument and suitable for single fault condition. The connection at the remote end of such
auxiliary circuits should not be accessible in normal use. Depending on application, equipment
connected to auxiliary circuits may vary widely. The choice of connected equipment or
combination of equipment should not diminish the level of user protection specified.

4.1.5 Insulation
Dielectric voltage withstand test 3.25kV RMS 50 Hz for 1 minute between all electrical
circuits

4.1.6 Environmental
Operating temperature -10 to +60°C
Storage temperature -20 to +85°C
Relative humidity 0 .. 95% non condensing
Shock 30g in 3 planes
Vibration 10 to 15 Hz @ 1.5 mm peak-peak
15 to 150 Hz @ 1.0g
Enclosure integrity (front face only) IP54

4.1.7 Enclosure
Style ANSI C39.1
Material Polycarbonate front and base, steel case
Terminals Screw clamp style

4.2 Display/Transducer Combined 0240, 0340, 0440, 0640

For Model 1000 and 1540 specification, refer to Section 4.3.

4.2.1 Inputs
Three phase three wire voltage range: ELV 100 - 120V L-L
LOV 121 - 240V L-L
MIV 241 - 480V L-L
HIV 481 - 600V L-L
Three phase four wire voltage range: ELV 100 - 120V L-L (57.7 - 70V L-N)

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 LOV 121 - 240V L-L (70.1 - 139V L-N)
MIV 241 - 480V L-L (140 - 277V L-N)
HIV 481 - 600V L-L (277 - 346V L-N)
(Voltage range is defined by factory build option.)
Nominal input voltage (a.c. rms) 57.7 to 346V L-N
100 to 600V L-L
System PT/VT primary values 1V to 400 kV
Max continuous input voltage 120% of nominal (up to 720 V max.)
Max short duration input voltage Twice nominal (1s application repeated 10 times at
10s intervals)
Nominal input voltage burden 0.2 VA approx. per phase
Nominal input current 1 or 5 A a.c. rms
System CT primary values Standard values up to 9999 Amps
(5 A secondaries)
(1 A on application)
Max continuous input current 120% of nominal
Max short duration current input 20 times nominal (1s application repeated 5 times at
5 min intervals)
Nominal input current burden 0.6 VA approx. per phase

4.2.2 Auxiliary Power Supply

The unit can be powered from an auxiliary a.c. or d.c. supply that is separate from the metered
supply. Versions of the unit are available to suit 100-200V 45-65 Hz a.c./d.c. and 12-48V d.c
supplies.

4.2.2.1 High Voltage version

Standard supply voltage 100 to 250V a.c. nominal ±15% (85V a.c. absolute
minimum to 287V a.c. absolute maximum) or 100V to
250V d.c. nominal +25%, -15% (85V d.c. absolute
minimum to 312V d.c. absolute maximum)
a.c. supply frequency range 45 to 66 Hz or 360 to 440 Hz (Model 0440)
a.c. supply burden 3W

4.2.2.2 Low Voltage version

d.c.supply 12 to 48V d.c.. nominal +25%, -15% (10.2V d.c. absolute
minimum to 60V d.c. absolute maximum)
d.c. supply burden 3W

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 4.2.3 Measuring Ranges
Values of measured quantities for which errors are defined.
Voltage 70 .. 120% of nominal
Current 5 .. 120% of nominal
Frequency 45 .. 66 Hz, 360 .. 440 Hz (Model 0440)
Crest values of voltage and current must remain within
168% of nominal maximum rms values

4.2.4 Accuracy
Voltage 0.4% of reading ±0.1% of range
1% of range maximum for Model 0440
Current 0.4% of reading ±0.1% of range
1% of range maximum for Model 0440
Frequency (not 0340) 0.15% of mid frequency
1% of mid frequency for Model 0440
Temperature coefficient 0.013%/°C typical
Response time to step input 1.5 seconds approx.
Screen update time 0.5 second approx.

4.2.5 Reference conditions of influence quantities

Values that quantities which affect measurement errors to a minor degree
have to be for the intrinsic (headline) errors for measured quantities to apply.
Ambient temperature 23°C
Input frequency 50 or 60 Hz 2%
Input waveform Sinusoidal (distortion factor 0.005)
Auxiliary supply voltage Nominal 1%
Auxiliary supply frequency Nominal 1%
Auxiliary supply distortion factor 0.05
Magnetic field of external origin Terrestrial flux

4.2.6 EMC Standards

EMC Immunity EN61326 for Industrial Locations to performance criterion A
EMC Emissions EN61326 to Class B - Domestic

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 4.2.7 Safety
IEC1010-1 (BSEN 61010-1) Permanently connected use, Normal Condition Installation category
III, pollution degree 2, Basic Insulation 720V RMS maximum. Auxiliary circuits (12-48V auxuliary,
communications, relay and analogue outputs, where applicable) are separated from metering
inputs and 100-250V auxiliary circuits by at least basic insulation. Such auxiliary circuit terminals
are only suitable for connection to equipment which has no user accessible live parts. The
insulation for such auxiliary circuits must be rated for the highest voltage connected to the
instrument and suitable for single fault condition. The connection at the remote end of such
auxiliary circuits should not be accessible in normal use. Depending on application, equipment
connected to auxiliary circuits may vary widely. The choice of connected equipment or
combination of equipment should not diminish the level of user protection specified.

4.2.8 Insulation
Dielectric voltage withstand test 3.25kV RMS 50Hz for 1 minute between all isolated
electrical circuits

4.2.9 Environmental
Operating temperature -20 to +70°C
Storage temperature -20 to +80°C
Relative humidity 0 .. 95% non condensing
Shock 30g in 3 planes
Vibration 10 to 15 Hz @ 1.5 mm peak-peak
15 to 150 Hz @ 1.0g
Enclosure integrity (front face only) IP54
Harmonic distortion max 50% THD up to 15th harmonic

4.2.10 Enclosure
Style ANSI C39.1
Material Polycarbonate front and base, steel case
Terminals 6-32 UNC slotted barrier type
Weight 1.3kg

4.3 Display/Tranducer Combined 1000 and 1540

See section 4.3.16 for specifications particular to the 1540

4.3.1 Inputs
Nominal input voltage (a.c. rms) 57.7 to 600V L-N (single phase)
100 to 600V L-L (3 wire)
57.7 to 346V L-N (4 wire)
System PT/VT primary values 1V to 400KV

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 Max continuous input voltage 120% of nominal (up to 720V max.)
Max short duration input voltage 2*nominal (1s application repeated 10 times at
10s intervals)
Nominal input voltage burden 0.2VA approx. per phase
Nominal input current 1 or 5A a.c. rms
System CT primary values Std. values up to 4kA (1 or 5 Amp secondaries)
Max continuous input current 120% of nominal
Max short duration current input 20*nominal (1s application repeated 5 times at
5 min intervals)
Nominal input current burden 0.6VA approx. per phase

4.3.2 Auxiliary Power Supply

The unit can be powered from an auxiliary a.c. or d.c. supply that is separate from the metered
supply. Versions of the unit are available to suit 100-200V 45-65 Hz a.c./d.c. and 12-48V d.c
supplies.
Standard supply voltage 100 to 250V a.c. nominal ±15% (85V a.c. absolute
minimum to 287V a.c. absolute maximum) or 100V to
250V d.c. nominal +25%, -15% (85V d.c. absolute
minimum to 312V d.c. absolute maximum)
a.c. supply frequency range 45 to 66 Hz or 360 to 440 Hz (Model 0440)
a.c. supply burden 3W
d.c.supply 12 to 48V d.c.. nominal +25%, -15% (10.2V d.c. absolute
minimum to 60V d.c. absolute maximum)
d.c. supply burden 3W

4.3.3 Accuracy
Voltage 0.4% of reading ±0.1% of range
Current 0.4% of reading ±0.1% of range
Neutral current 4% of range
Frequency 0.15% of mid frequency
Power factor 1% of Unity
Active power (W) 0.9% of reading ±0.1% of range
Reactive power (VAr) 1.9% of reading ±0.1% of range
Apparent power (VA) 0.9% of reading ±0.1% of range
Active energy (W.h) 1 Class (IEC 1036, Active PF 0.8-1-0.8 importing)
Reactive energy (VAr.h) 2%, Reactive PF 0.8-1-0.8 importing)
Temperature coefficient 0.013%/°C typical
Response time to step input 1.5 seconds approx.
Error change due to variation Twice the error allowed for the reference
of an influence quantity in the condition applied in the test.
manner described in section 6

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 of IEC688:1992
Error in measurement when a Twice the error allowed at the end of the reference
measurand is within its measuring range adjacent to the section of the measuring
range, but outside its range where the measurand is currently operating
reference range. or being tested.

4.3.4 Reference conditions

Reference conditions of measurands and, where applicable, components of the measurand
Values of measured quantities, and of components of measured quantities, where the intrinsic
(headline) errors for the measured quantities apply.
Voltage 50 .. 100% of nominal
Current 10 .. 100% of nominal
Frequency Nominal ±10%
Active power (Watt) 10 .. 100% of nominal
Voltage Nominal ±2%
Current 10 .. 100% of nominal
Active power factor 1 .. 0.8 leading or lagging
Reactive power (VAr) 10 .. 100% of nominal
Voltage Nominal ±2%
Current 10 .. 100% of nominal
Reactive power factor 1 .. 0.8 leading or lagging
Apparent Power (VA) 10 .. 100% of nominal
Voltage Nominal ±2%
Current 10 .. 100% of nominal
Power factor 1 .. 0.8 leading or lagging
Voltage Nominal ±2%
Current 40 .. 100% of nominal

4.3.5 Reference conditions of influence quantities

Values that quantities which affect measurement errors to a minor degree have to be for the
intrinsic (headline) errors for measured quantities to apply.
Ambient temperature 23°C
Input frequency 50 or 60 Hz ±2%
Input waveform Sinusoidal (distortion factor 0.005)
Auxiliary supply voltage Nominal ±1%
Auxiliary supply frequency Nominal ±1%
Auxiliary supply distortion factor 0.05
Magnetic field of external origin Terrestrial flux

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 4.3.6 Nominal range of use of influence quantities for measurands
Values of quantities which affect measurement errors to a minor degree for which the
magnitude of the measurement error is defined in this specification.
Voltage 50 .. 120% of nominal
Current 5 .. 120% of nominal
Frequency Nominal ±10%
Power factor (active/reactive 0.5 lagging .. 1 .. 0.8 leading ,importing
as appropriate)
Temperature -20°C to +70°C
Input waveform distortion 20% 3rd Harmonic distortion
Auxiliary supply voltage Nominal ±10%
Auxiliary supply frequency Nominal ±10%
Magnetic field of external origin 400A/m
Crest values of voltage and current must remain within
168% of nominal maximum rms values

4.3.7 Functional ranges

The functional ranges of measurands and of influence quantities for measurands
Values of measured quantities, components of measured quantities, and quantities which affect
measurement errors to a minor degree, for which the product gives meaningful readings.
Voltage 5 .. 120% of nominal (below 5% of nominal voltage,
current indication is only approximate)
Current 0 .. 120% of nominal
(2 .. 120% of nominal for Power Factor)
Frequency 45 .. 66 Hz
Power Factor 1 .. 0 leading or lagging, importing (active/reactive as
appropriate)
Temperature -20°C to +70°C
Active power (Watt) 0 .. 120% of nominal, 360 MW Max.
Reactive power (VAr) 0 .. 120% of nominal, 360 MVAr Max.
Apparent power (VA) 0 .. 120% of nominal, 360 MVA Max.

4.3.8 Screen
Update 0.5 second approx.

4.3.9 Standards
Terms, Definitions and Test Methods IEC688 (BSEN 60688)
IEC1036 (BSEN 61036)
EMC IEC 61326

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 4.3.10 Safety
IEC1010-1 (BSEN 61010-1) Permanently connected use, Normal Condition Installation category III,
pollution degree 2, Basic Insulation 720V RMS maximum. Auxiliary circuits (12-48V auxuliary,
communications, relay and analogue outputs, where applicable) are separated from metering
inputs and 100-250V auxiliary circuits by at least basic insulation. Such auxiliary circuit terminals
are only suitable for connection to equipment which has no user accessible live parts. The
insulation for such auxiliary circuits must be rated for the highest voltage connected to the
instrument and suitable for single fault condition. The connection at the remote end of such
auxiliary circuits should not be accessible in normal use. Depending on application, equipment
connected to auxiliary circuits may vary widely. The choice of connected equipment or
combination of equipment should not diminish the level of user protection specified.

4.3.11 Insulation
Dielectric voltage withstand test 3.25kV RMS 50Hz for 1 minute between all isolated
electrical circuits

4.3.12 Environmental
Operating temperature -20°C to +70°C
Storage temperature -20°C to +80°C
Relative humidity 0 .. 95% non condensing
Warm up time 1 minute
Shock 30g in 3 planes
Vibration 10 to 15 Hz @ 1.5 mm peak-peak
15 to 150 Hz @ 1.0g
Enclosure code (front) IP54
Harmonic distortion max 50% THD up to 15th harmonic

4.3.13 Enclosure
Style ANSI C39.1 or JIS C-1102
Material Polycarbonate Front, Steel case
Terminals 6-32 UNC slotted barrier style.
Weight 1.3kg

4.3.14 Serial Communications Option

Protocol MODBUS (RS485)
Baud rate 19200, 9600, 4800 or 2400 (programmable)
Parity Odd or Even, with 1 stop bit, or None with 1 or 2 stop bits.

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 4.3.15 Active Energy Pulsed Output Option
Rated SPNO, 100V dc, 0.5A Max.
Default pulse rate 1 per kWhr
Pulse rate divisors 1
10 (yielding 1 pulse per 10 kWhr)
100 (yielding 1 pulse per 100 kWhr)
Pulse duration 60ms, 100ms or 200ms, 3600 Pulses per hour max

4.3.16 Integra 1540 Only

Measuring Range: Total Harmonic
Distortion: Up to 15th Harmonic 0%-50%
Accuracy: Total Harmonic Distortion 1%
Reference conditions of measurands: Voltage: 60% to 100% of nominal for THD
Reference conditions of measurands: Total Harmonic Distortion: 20% to 100% of nominal for THD
Reference conditions of measurands: Total Harmonic Distortion: 0-30%

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 5 Basis of measurement and calculations
Reactive and Apparent Power

Active powers are calculated directly by multiplication of voltage and current. Reactive powers
are calculated using frequency corrected quarter phase time delay method. Apparent power is
calculated as the square root of sum of squares of active and reactive powers. For 4 wire
products, overall powers are the sum of the per phase powers. For 3 phase 3 wire products, the
"two wattmeter" method is used for overall powers.

Energy resolution

Cumulative energy counts are reported using the standard IEEE floating point format. Reported
energy values in excess of 16MWh may show a small non cumulative error due to the
limitations of the number format. Internally the count is maintained with greater precision.
The reporting error is less than 1 part per million and will be automatically corrected when the
count increases.

Power Factor

The magnitude of Per Phase Power Factor is derived from the per phase active power and per
phase apparent power. The power factor value sign is set to negative for an inductive load and
positive for a capacitive load.

The magnitude of the System Power Factor is derived from the sum of the per phase active
power and per phase apparent power. The system power factor value sign is set to negative for
an inductive load and positive for a capacitive load. The load type, capacitive or inductive, is
determined from the signs of the sums of the relevant active powers and reactive powers. If
both signs are the same, then the load is inductive, if the signs are different then the load is
capacitive.

The magnitude of the phase angle is the ArcCos of the power factor. It's sign is taken as the
opposite of the var's sign.

Maximum Demand

The maximum power consumption of an installation is an important measurement as power

utilities often levy related charges. Many utilities use a thermal maximum demand indicator
(MDI) to measure this peak power consumption. An MDI averages the power consumed over a
number of minutes, such that short surges do not give an artificially high reading.

Integra uses a sliding window algorithm to simulate the characteristics of a thermal MDI
instrument, with the demand period being updated every minute.

The demand period can be reset, which allows synchronisation to other equipment. When it is
reset, the values in the Demand and Maximum Demand registers are set to zero.

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 Time Integration Periods can be set to 8, 15, 20 or 30 minutes.

Note: During the initial period when the "sliding window" does not yet contain a full set of
readings (i.e. the elapsed time since the demands were last reset or the elapsed time since
Integra was switched on is less than the selected demand period) then maximum demands may
not be true due to the absence of immediate historical data.

The Time Integration Period can be user set either from the Integra 1540 Display or by using the
communications option.

Total Harmonic Distortion (1540 only)

The calculation used for the Total Harmonic Distortion is:

THD = ((RMS of total waveform - RMS of fundamental) / RMS of total waveform) x 100

This is often referred to as THD - R

The figure is limited to the range 0 to 100% and is subject to the 'range of use' limits. The
instrument may give erratic or incorrect readings where the THD is very high and the
fundamental is essentially suppressed.

For low signal levels the noise contributions from the signal may represent a significant portion
of the "RMS of total waveform" and may thus generate unexpectedly high values of THD. To
avoid indicating large figures of THD for low signal levels the product will produce a display of 0
(zero).

Typically, display of THD will only produce the 0 (zero) value when the THD calculation has been
suppressed due to a low signal level being detected. It should also be noted that spurious
signals (for example, switching spikes) if coincident with the waveform sampling period will be
included in the "RMS of the total waveform" and will be used in the calculation of THD.

The display of THD may be seen to fluctuate under these conditions.

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 6 Serial Communications

6.1. RS485 Port – Modbus or JC N2

0240 0340 0440 0640 1000 1540 Option

INTEGRA 1000 and 1540 offer the option of an RS485 communication port for direct connection
to SCADA systems. This port can be used for either an RS485 Modbus RTU slave, or as a
Johnson Controls N2 protocol slave. Choice of reply protocol is made by the Integra on the
basis of the format of request, so that a Modbus request receives a Modbus reply, and an N2
protocol request receives an N2 protocol reply.

6.2 Modbus® Implementation

This section provides basic information for the integration of the product to a Modbus network.
If background information or more details of the Integra implementation is required please refer
to our “Guide to RS485 Communications and the Modbus Protocol”, available on our CD
catalogue or from any recognised supplier.

The Modbus‚ protocol establishes the format for the master's query by placing into it the device
address, a function code defining the requested action, any data to be sent, and an error
checking field. The slave's response message is also constructed using Modbus protocol. It
contains fields confirming the action taken, any data to be returned, and an error-checking field.
If an error occurs in receipt of the message, or if the slave is unable to perform the requested
action, the slave will construct an error message and send it as it’s response. Framing errors
receive no response from the Integra.

The electrical interface is 2-wire RS485, via 3 screw terminals. Connection should be made using
twisted pair screened cable (Typically 22 gauge Belden 8761 or equivalent). All "A" and "B"
connections are daisy chained together. The screens should also be connected to the “Gnd”
terminal. To avoid the possibility of loop currents, an Earth connection should be made at only
one point on the network.

Line topology may or may not require terminating loads depending on the type and length of
cable used. Loop (ring) topology does not require any termination load.

The impedance of the termination load should match the impedance of the cable and be at both
ends of the line. The cable should be terminated at each end with a 120 ohm (0.25 Watt min.)
resistor.

A total maximum length of 3900 feet (1200 metres) is allowed for the RS485 network. A
maximum of 32 electrical nodes can be connected, including the controller.

The address of each Integra 1000/1540 can be set to any value between 1 and 247. Broadcast
mode (address 0) is not supported.

The maximum latency time of an Integra 1000/1540 is 150ms i.e. this is the amount of time that
can pass before the first response character is output. The supervisory programme must allow
this period of time to elapse before assuming that the Integra is not going to respond.

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 The data format in RTU mode is:

Coding System: 8-bit per byte

Data Format: 4 bytes (2 registers) per parameter.
Floating point format ( to IEEE 754)
Most significant register first (Default). The default may be changed if
required - See Holding Register "Register Order" parameter.

Error Check Field: 2 byte Cyclical Redundancy Check (CRC)

Framing: 1 start bit

8 data bits, least significant bit sent first
1 bit for even/odd parity or no parity
1 stop bit if parity is used; 1 or 2 bits if no parity

Data Transmission speed is selectable between 2400, 4800, 9600 and 19200 baud.

Input Registers

Input registers are used to indicate the present values of the measured and calculated electrical
quantities.

Each parameter is held in two consecutive 16 bit registers. The following table details the 3X
register address, and the values of the address bytes within the message. A tick (÷) in the
column indicates that the parameter is valid for the particular wiring system. Any parameter
with a cross (X) will return the value Zero (0000h). Some parameters are only available on the
Integra 1540, as shown in the table below..

Each parameter is held in the 3X registers. Modbus Function Code 04 is used to access all
parameters.

e.g. to request Volts 1 Start address = 00

No of registers = 02
Volts 2 Start address = 02
No of registers = 02

Each request for data must be restricted to 40 parameters or less. Exceeding the 40 parameter
limit will cause a Modbus exception code to be returned.

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 Register Parameter Parameter Modbus Start 3Ø 3Ø 1Ø 1Ø
Number Address Hex 4 wire 3 wire 3 wire 2 wire
High Byte Low Byte
30001 1 Volts 1 (L1 – N 4W or L1 – L2 3W) 00 00 ✓ ✓ ✓ ✓
30003 2 Volts 2 (L2 – N 4W or L2 – L3 3W) 00 02 ✓ ✓ ✓ X
30005 3 Volts 3 (L3 – N 4W or L3 – L1 3W) 00 04 ✓ ✓ X X
30007 4 Current 1 00 06 ✓ ✓ ✓ ✓
30009 5 Current 2 00 08 ✓ ✓ ✓ X
30011 6 Current 3 00 0A ✓ ✓ X X
30013 7 Watts Phase 1 - Integra 1540 only 00 0C ✓ X ✓ ✓
30015 8 Watts Phase 2 - Integra 1540 only 00 0E ✓ X ✓ X
30017 9 Watts Phase 3 - Integra 1540 only 00 10 ✓ X X X
30019 10 VA Phase 1 - Integra 1540 only 00 12 ✓ X ✓ ✓
30021 11 VA Phase 2 - Integra 1540 only 00 14 ✓ X ✓ X
30023 12 VA Phase 3 - Integra 1540 only 00 16 ✓ X X X
30025 13 var Phase 1 - Integra 1540 only 00 18 ✓ X ✓ ✓
30027 14 var Phase 2 - Integra 1540 only 00 1A ✓ X ✓ X
30029 15 var Phase 3 - Integra 1540 only 00 1C ✓ X X X
30031 16 Power Factor Phase 1 - Integra 1540 only 00 1E ✓ X ✓ ✓
30033 17 Power Factor Phase 2 - Integra 1540 only 00 20 ✓ X ✓ X
30035 18 Power Factor Phase 3 - Integra 1540 only 00 22 ✓ X X X
30037 19 Phase Angle Phase 1 - Integra 1540 only 00 24 ✓ X ✓ ✓
30039 20 Phase Angle Phase 2 - Integra 1540 only 00 26 ✓ X ✓ X
30041 21 Phase Angle Phase 3 - Integra 1540 only 00 28 ✓ X X X
30043 22 Volts Ave 00 2A ✓ ✓ ✓ ✓
30047 24 Current Ave 00 2E ✓ ✓ ✓ ✓
30049 25 Current Sum - Integra 1540 only 00 30 ✓ ✓ ✓ ✓
30053 27 Watts Sum 00 34 ✓ ✓ ✓ ✓
30057 29 VA Sum 00 38 ✓ ✓ ✓ ✓
30061 31 var Sum 00 3C ✓ ✓ ✓ ✓
30063 32 Power Factor Ave 00 3E ✓ ✓ ✓ ✓
30067 34 Average Phase Angle - Integra 1540 only 00 42 ✓ ✓ ✓ ✓
30071 36 Frequency 00 46 ✓ ✓ ✓ ✓
30073 37 Wh Import 00 48 ✓ ✓ ✓ ✓
30077 39 varh Import 00 4C ✓ ✓ ✓ ✓
30085 43 W Demand Import 00 54 ✓ ✓ ✓ ✓
30087 44 W Max. Demand Import 00 56 ✓ ✓ ✓ ✓
30105 53 A Demand 00 68 ✓ ✓ ✓ ✓
30107 54 A Max. Demand 00 6A ✓ ✓ ✓ ✓
30201 101 V L1-L2 (calculated) 00 C8 ✓ X ✓ X
30203 102 V L2-L3 (calculated) 00 CA ✓ X X X
30205 103 V L3-L1 (calculated) 00 CC ✓ X X X
30207 104 Average Line to Line Volts 00 CE ✓ X ✓ X
30225 113 Neutral Current 00 E0 ✓ X ✓ ✓
30235 118 THD Volts 1 - Integra 1540 only 00 EA ✓ ✓ ✓ ✓
30237 119 THD Volts 2 - Integra 1540 only 00 EC ✓ ✓ ✓ X
30239 120 THD Volts 3 - Integra 1540 only 00 EE ✓ ✓ X X
30241 121 THD Current 1 - Integra 1540 only 00 F0 ✓ ✓ ✓ ✓
30243 122 THD Current 2 - Integra 1540 only 00 F2 ✓ ✓ ✓ X
30245 123 THD Current 3 - Integra 1540 only 00 F4 ✓ ✓ X X
30249 125 THD Voltage Mean - Integra 1540 only 00 F8 ✓ ✓ ✓ ✓
30251 126 THD Current Mean - Integra 1540 only 00 FA ✓ ✓ ✓ ✓
30255 128 Power Factor (+Ind/-Cap) 00 FE ✓ ✓ ✓ ✓

58 Integra 1540, 1000, 0640, 0440, 0340, 0240 Issue 1 04/03

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 Modbus Holding Registers and Integra set up

Holding registers are used to store and display instrument configuration settings. All holding
registers not listed in the table below should be considered as reserved for manufacturer use
and no attempt should be made to modify their values.

The demand parameters may be viewed or changed using the Modbus protocol. Each parameter
is held in the 4X registers. Modbus Function Code 03 is used to read the parameter and Function
Code 16 is used to write.

Register Parameter Parameter Modbus Start Valid range Mode

Number Address Hex
High Low
Byte Byte
40001 1 Demand Time 00 00 0 only r/w
40003 2 Demand Period 00 02 8,15,20,30 minutes. r/w
40007 4 System Voltage 00 06 1V - 400kV r/wp
40009 5 System Current 00 08 1-9999 A r/wp
40011 6 System Type 00 0A ro
40013 7 Relay Pulse Width 00 0C 3,5,10 (x20mS) r/w
40015 8 Energy Reset 00 0E 0 only wo
40023 12 Pulse Divisor 00 16 1,10,100,1000 r/w
40025 13 Password 00 18 0000-9999 r/w
40037 19 System Power 00 24 r/o
40041 21 Register Order 00 28 2141.0 only wo
40299 150 Secondary Volts 01 2A Min Vin-Max Vin r/wp
r/w = read/write r/wp = read and write with password clearance ro = read only wo = write only

Password Settings marked r/wp require the instrument password to have been entered into the
Password register before changes will be accepted. Once the instrument configuration has been
modified, the password should be written to the password register again to protect the
configuration from unauthorised or accidental change. Power cycling also restores protection.
Reading the Password register returns 1 if the instrument is unprotected and 0 if it is protected
from changes.

Demand Time is used to reset the demand period. A value of zero must be written to this
register to accomplish this. Writing any other value will cause an error to be returned. Reading
this register after instrument restart or resetting demand period gives the number of minutes of
demand data up to a maximum of the demand period setting. For example, with 15 minute
demand period, from reset the value will increment from zero every minute until it reaches 15.
It will remain at this value until a subsequent reset occurs.

Demand Period The value written must be one of the following 8,15, 20 or 30 (minutes),
otherwise an error will be returned.

System Type The System type address will display '1' for single phase 2 wire, '2' for 3 Phase 3
Wire, '3' for 3 Phase 4 Wire or 4 for single phase 3 wire.

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 Relay Pulse Width is the width of the relay pulse in multiples of 20 ms. However, only values of
3 (60 ms), 5 (100 ms) or 10 (200 ms) are supported. Writing any other value will cause an error
to be returned.

Reset Energy is used to reset the Energy readings. A value of zero must be written to this
register to accomplish this. Writing any other value will cause an error to be returned.

Pulse Rate Divisor, supports only values of 1,10,100 or 1000. Writing any other value will cause
an error to be returned.

System Power, is the maximum system power based on the values of system type, system volts
and system current.

Register Order, the instrument can receive or send floating-point numbers in normal or reversed
register order. In normal mode, the two registers that make up a floating point number are sent
most significant bytes first. In reversed register mode, the two registers that make up a floating
point number are sent least significant bytes first. To set the mode, write the value '2141.0' into
this register - the instrument will detect the order used to send this value and set that order for
all Modbus transactions involving floating point numbers.

Secondary Volts indicates the voltage on the VT secondary when the voltage on the Primary is
equal to the value of System Volts . The value of this register can be set to between the
minimum and maximum instrument input voltage.

6.3 RS485 Implementation of Johnson Controls Metasys

These notes explain Metasys and Crompton Instruments Integra 1000/1540 integration. Use
these notes with the Metasys Technical Manual, which provides information on installing and
commissioning Metasys N2 Vendor devices.

Application details

The Integra 1000/1540 is a N2 Vendor device that connects directly with the Metasys N2 Bus.
This implementation assigns 33 key electrical parameters to ADF points, each with override
capability.

Components requirements
• Integra 1000/1540 with RS485 option.
• N2 Bus cable.

Metasys release requirements

• Metasys OWS software release 7.0 or higher.
• Metasys NCM311. NCM360.

60 Integra 1540, 1000, 0640, 0440, 0340, 0240 Issue 1 04/03

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 Support for Metasys Integration

Johnson Control Systems

System House, Randalls Research Park,
Randalls Way, Leatherhead,
Surrey, KT22 7TS
England

Support for Crompton Integra operation

This is available via local sales and service centre.

Design considerations

When integrating the Crompton equipment into a Metasys Network, keep the following
considerations in mind.
• Make sure all Crompton equipment is set up, started and running properly before attempting
to integrate with the Metasys Network.
• A maximum of 32 devices can be connected to any one NCM N2 Bus.

Vendor Address 1-247 (Limited by co-resident Modbus protocol)

Port Set-up
Baud Rate 9600
Duplex Full
Word Length 8
Stop Bits 1
Parity None
Interface RS485

Integra 1540, 1000, 0640, 0440, 0340, 0240 Issue 1 04/03 61

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 METASYS N2 application

Integra 1560/1580 Point Mapping table

Address Parameter Description Units
1 Voltage 1 Volts
2 Voltage 2 Volts
3 Voltage 3 Volts
4 Current 1 Amps
5 Current 2 Amps
6 Current 3 Amps
7 Voltage average Volts
8 Current average Amps
9 Power (Watts) Sum kW
10 VA Sum kVA
11 var Sum kvar
12 Power Factor average
13 Frequency Hz
14 Active Energy (Import) kWh
15 Reactive Energy (Import) kvarh
16 Watts Demand (Import) kW
17 Maximum Watts Demand (Import) kW
18 Amps Demand Amps
19 Maximum Amps Demand Amps
20 Voltage L1-L2 (calculated) Volts
21 Voltage L2-L3 (calculated) Volts
22 Voltage L3-L1 (calculated) Volts
23 Neutral Current Amps
24 Active Energy (Import) GWh
25 Reactive Energy (Import) Gvarh

The following parameters are available only on the Integra 1540

26 THD V1 %
27 THD V2 %
28 THD V3 %
29 THD I1 %
30 THD I2 %
31 THD I3 %
32 THD Vmean %
33 THD Imean %

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 7 Maintenance

Warning

• During normal operation, voltages hazardous to life may be present at some of the terminals
of this unit. Installation and servicing should be performed only by qualified, properly trained
personnel' abiding by local regulations. Ensure all supplies are de-energised before
attempting connection or other procedures.

• It is recommended adjustments be made with the supplies de-energised, but if this is not
possible, then extreme caution should be exercised.

• Terminals should not be user accessible after installation and external installation provisions
must be sufficient to prevent hazards under fault conditions.

• This unit is not intended to function as part of a system providing the sole means of fault
protection - good engineering practice dictates that any critical function be protected by at
least two independent and diverse means.

In normal use, little maintenance is needed. As appropriate for service conditions, isolate
electrical power, inspect the unit and remove any dust or other foreign material present.
Periodically check all connections for freedom from corrosion and screw tightness, particularly if
vibration is present.

The front of the case should be wiped with a dry cloth only. Use minimal pressure, especially
over the viewing window area. If necessary wipe the rear case with a dry cloth. If a cleaning
agent is necessary, isopropyl alcohol is the only recommended agent and should be used
sparingly. Water should not be used. If the rear case exterior or terminals should accidentally be
contaminated with water, the unit must be thoroughly dried before further service. Should it be
suspected that water might have entered the unit, factory inspection and refurbishment is
recommended.

In the unlikely event of a repair being necessary, it is recommended that the unit be returned to
the factory or nearest Crompton service centre.

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 64 Integra 1540, 1000, 0640, 0440, 0340, 0240 Issue 1 04/03
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 Integra 1540, 1000, 0640, 0440, 0340, 0240 Issue 1 04/03 65
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 Notes

66 Integra 1540, 1000, 0640, 0440, 0340, 0240 Issue 1 04/03

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 The Information contained in these installation instructions is for use only by installers trained to make electrical power installations and is intended
to describe the correct method of installation for this product. However, Tyco Electronics has no control over the field conditions which influence
product installation.
It is the user's responsibility to determine the suitability of the installation method in the user's field conditions. Tyco Electronics' only obligations
are those in Tyco Electronics' standard Conditions of Sale for this product and in no case will Tyco Electronics be liable for any other incidental,
indirect or consequential damages arising from the use or misuse of the products. Crompton is a trade mark.

Tyco Electronics UK Limited

Crompton Instruments
Freebournes Road, Witham, Essex, CM8 3AH, UK
Tel: +44 1376 509 509 Fax: +44 1376 509 511 http://energy.tycoelectronics.com
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