Kamstrup OMNIGRID Connect User manual

Installation guide
OMNIGRID Connect

OMNIGRID Connect
Industrivej 28, Stilling · 8660 Skanderborg · Denmark · Tel: [phone] · Fax: [phone] · [e-mail] · www.kamstrup.com
Kamstrup A/S · 5512-2065_A1_GB_BSI 2/33
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contained herein is believed to be accurate, Kamstrup assumes no responsibility for any errors and/or omissions that may appear in this document.
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Industrivej 28
Stilling
DK-8660 Skanderborg, Denmark
All Rights Reserved
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Contents
1.
Preface 5
1.1 Intended reader......................................................................................................................................5
1.2 Purpose...................................................................................................................................................5
1.3 Additional resources...............................................................................................................................6
2.
Description 7
2.1 OMNIA®, OMNIGRID and OMNIGRID Connect.......................................................................................7
3.
Variants 8
4.
Installation of module(s) in primary module area 10
4.1 Installation of OMNIGRID Connect on top of OMNICON® 2G Modem using add-on interface ............10
4.2 Installation of OMNICON® 2G Modem and OMNIGRID Connect in OMNIPOWER® meter...................11
5.
Wiring 12
5.1.1 OMNIPOWER® cable channel...................................................................................................13
5.2 Antenna ................................................................................................................................................13
6.
Digital inputs (OMNIGRID Connect built-in) 14
6.1 Digital input 1- dedicated neutral fault.................................................................................................14
6.2 Data ......................................................................................................................................................15
6.3 Digital input 2 – dedicated to surge protection/diverter signal ............................................................17
7.
Earth fault measurement (OMNIGRID Connect built-in) 18
7.1 Data ......................................................................................................................................................19
8.
Extension modules 21
8.1 RS-485 multi-drop bus ..........................................................................................................................21
8.2 Power Analyzer (PA) IME Nemo D4-Le..................................................................................................22
8.2.1 Earth fault detection for IT-net .................................................................................................22
8.3 Allen-Bradley (PLC) Micro820 ...............................................................................................................24
8.3.1 Temperature monitoring ..........................................................................................................24
8.4 Power Analyzer (PA) Circutor CVM-MINI ..............................................................................................25
8.4.1 Earth fault detection for IT-net .................................................................................................25
9.
Asset management 26
9.1 GIAI and GS1.........................................................................................................................................26
10.
Verification of installation (after deployment) 27
10.1 OMNIGRID Connect LEDs .....................................................................................................................27
10.2 PA IME / Nemo D4-Le LEDs...................................................................................................................27
10.3 PLC Micro820 LEDs ...............................................................................................................................27
10.4 PA Circutor CVM-MINI LEDs..................................................................................................................28
10.5 OMNIPOWER and OMNICON 2G Modem integration into OMNIA ......................................................28
10.6 Network Manager.................................................................................................................................29

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Appendix
A.
Appendix 30
A.1 Electrical data .......................................................................................................................................30
A.2 Mechanical data: ..................................................................................................................................30
A.3 Examples of wiring for 230V and 400V installations .............................................................................31
A.4 Connecting temperature transmitter....................................................................................................33

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1.
Preface
Warning: Risk of Electric Shock
•
This product is to be installed by qualified technician only!
•Do not expose wiring to metal edges or other sharp objects to prevent damage!
•Install in accordance with local rules and legislations.
•Kamstrup assumes no responsibility for improper installation or application.
1.1
Intended reader
Use this installation guide if you are responsible for installing or troubleshooting OMNIGRID Con-
nect. You should have a basic understanding of electrical circuitry. If you do not, obtain the proper
training before installing this product.
1.2
Purpose
This manual is a reference guide to install, wire and troubleshoot your OMNIGRID Connect and ex-
tension modules.
This manual:
•Gives an overview of needed components and their functions.
•Explains how to install and wire your OMNIGRID Connect and extension modules.
•Gives an overview of the OMNIA® system and of how OMNIGRID Connect integrates.

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1.3
Additional resources
Documentation contains additional information concerning related products.
Type
URL
Allen-Bradley Micro820 PLC
http://ab.rockwellautomation.com/Programmable-Controllers/Mi-
cro820
http://literature.rockwellautomation.com/idc/groups/litera-
tre/documents/um/2080-um005_-en-e.pdf
IME Nemo D4-Le Power Analyzer
http://www.imeitaly.com
Kamstrup OMNIPOWER
http://www.kamstrup.com
PRODUAL LUK V2
http://www.produal.com
Kamstrup OMNICON® xG Modem
(OMNICON® 2G Modem)
(Integrators Guide)
(Antenna guide)
http://www.kamstrup.com
5512-1465
5512-1533
5811-2381 (DK)

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2.
Description
2.1
OMNIA®, OMNIGRID and OMNIGRID Connect
OMNIGRID is an OMNIA® Suite product concept designed for monitoring secondary substations
and providing insight into the low-voltage grid together with analytic features. OMNIGRID is a ver-
satile and flexible product that brings both power quality, grid maintenance and the condition of
the substation into focus. The OMNIGRID Connect module is the gateway in the secondary substa-
tion to enable the OMNIGRID feature.
The OMNIGRID Connect module collects, logs and analyses data from various sources. OMNIGRID
is a modularised concept with the OMNIPOWER® CT meter and OMNIGRID Connect as the basic
blocks. Other building blocks in the solution, at substation, can be added such as power analysers
(extension module) and sensors. All blocks communicate with OMNIGRID Connect via RS-485
MODBUS.
OMNIGRID Connect is developed for integration (communication and supply) with both the OMNI-
CON® 2G Modem and in the future Kamstrup Radio Mesh Network (not yet supported).
OMNIGRID Connect supports:
•RS-485 multi-drop network for extension modules.
•Two digital voltage-free (dry) inputs.
Dedicated analogue input designed to measure earth fault currents.
•Simple HMI.
•Powerful embedded ARM application platform.
•Storage for loggers and settings.
•OMNIA® integration, through standard DLMS/COSEM protocols.
Figure 1: OMNIGRID Connect hardware platform.

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3.
Variants
OMNIGRID Connect is available in three variants:
•
Alone
(i.e. not together with OMNICON® 2G Modem or installed in OMNIPOWER® meter).
For retrofit of existing OMNIPOWER® installations with existing OMNICON® 2G Modem.
Figure 2: OMNIGRID Connect.
•
In combination with OMNICON® 2G Modem
, but not installed in OMNIPOWER® meter).
For retrofit in OMNIPOWER® meters with no P2P communication infrastructure or currently us-
ing Kamstrup RF-mesh.
Figure 3: Board stack-up for OMNIGRID Connect and OMNICON® 2G Modem.

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•
In combination with OMNICON® 2G Modem and pre-installed in OMNIPOWER® meter
from
Kamstrup production.
Figure 4: OMNIGRID Connect, OMNICON® 2G Modem installed in OMNIPOWER® meter.

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4.
Installation of module(s) in primary module area
Warning: Electrostatic Discharge (ESD)
Circuit board assemblies must always be handled at properly designated work areas.
Components used in electronic assemblies are sensitive to static electricity and can be damaged by
its discharge. Circuit board assemblies should be handled by the edges. Avoid touching circuits or
components.
Whenever handling a circuit board assembly, the technician must be properly grounded.
4.1
Installation of OMNIGRID Connect on top of OMNICON® 2G Modem using add-
on interface
OMNIGRID Connect is installed on top of OMNICON® 2G Modem using the add-on interface out-
lined below. It is not necessary to remove OMNICON® 2G Modem if already installed in
OMNIPOWER® meter (and supplied).
It is required to use external antenna for OMNICON® 2G Modem when used together with OM-
NIGRID Connect – remove PCB antenna and install proper external antenna (for example Kamstrup
item 6699448).
Figure 5: OMNICON 2G Modem add-on interface outlined.

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4.2
Installation of OMNICON® 2G Modem and OMNIGRID Connect in
OMNIPOWER® meter
Carefully insert OMNICON® 2G Modem (with OMNIGRID Connect already installed on the add-on
interface) in the primary module area of the OMNIPOWER® meter.
Note
The electrical connection is based on a 2x4 pin connector.
Do not use excessive force during installation.
Check that the snap lock is correctly applied.
Figure 6: OMNICON® 2G Modem and OMNIGRID Connect mounting in OMNIPOWER® (snap lock).

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5.
Wiring
A maximum of four wire pairs are needed to interconnect OMNIGRID Connect with sensors and
extension modules. The specific need for connections depends on use.
Figure 7: OMNICON Connect PCB and terminal block outline.
Use
0.75 mm2
or
1 mm2
(AWG 18/19 or AWG 17) unshielded cable; stranded or single core.
If needed, use a colour-coding scheme if required in relation to local legislation – cable colouring is
not defined within this document.
•RS-485 137 A/- and 138 B/+:
Twisted pair
.
•Analog input (earth fault current) +A and-A:
Twisted pair
.
•Digital intup1 +65 and-66:
Twisted or non-twisted
.
•Digital input2 +67 and -68:
Twisted or non-twisted
.
-68 is preferred to be the same colour as -66.
PCB terminals are based on Phoenix Contact type MKDS 1/ 2-3,81 (www.phoenixcontact.com).
Key parameters:
•Tightening torque between 0.22 Nm and 0.25 Nm.
•Stripping length: 5 mm.
It is recommended to reduce the lengths of cables to a minimum.
Splices in cables should be avoided whenever possible. Splices are prime areas for corrosion, loose
connections and introduction of electromagnetic noise. A single, unbroken cable from OMNIGRID
Connect to the sensor and extension modules is always the most reliable solution.
Be careful when installing low-voltage wiring in proximity to higher voltage wiring. Any wires carry-
ing an AC signal of more than 120VAC are a possible source of electromagnetic interference, and
instrument signal cables should be installed a safe distance from them. If low-voltage cable must
cross over AC power, the two should be separated by an adequate distance, and the crossing
should be made at right angles to minimize induction.
The terminal block for OMNICON® 2G Modem shown in Figure 7 shall not be used.

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5.1.1
OMNIPOWER® cable channel
If needed, it is possible to expand the lid “wire opening” using diagonal cutter as shown below.
Avoid pinching cables when remounting cover!
Figure 8: Cable openings in OMNIPOWER® lid.
5.2
Antenna
The antenna must be installed more than 0.3 m away from the OMNIPOWER® meter.
To ensure that the antenna is mounted in such a way that it optimizes the reception conditions,
the signal indicator on OMNICON® 2G Modem must be monitored. Please see documentation for
OMNICON® 2G Modem for further information.

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6.
Digital inputs (OMNIGRID Connect built-in)
The two digital inputs on OMNIGRID Connect are implemented as “dry”.
6.1
Digital input 1 - dedicated neutral fault
This input is dedicated to monitor a spark gap.
Detection of an overloaded earth connection (in IT-nets) is realized using a spark gap (aka. disneu-
ter).
The spark gap is required to implement a mechanism for activating a potential free contact (i.e.
“volt free” or "dry") that is connected to a digital input 1 on OMNIGRID Connect.
OMNIGRID Connect
Digital
Spark gap
Figure 9: Earth fault current measurement in IT net using OMNIGRID Connect.
Key parameters:
•Cable length: < 8 m
•Terminal block: +65 /-66
•Default state (no error)*: “Closed”
•Galvanic isolation: No
* The default state of the digital input 1 is “closed”, i.e. when no fault is present, the digital input is
“opened”.
Note
When OMNIGRID Connect is powered up, either “PASSIVE” or “ACTIVE” events are
logged.

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PASSIVE ACTIVE
RAISED CEASED
INIT
Closed Open
Open Closed
Open
Closed
Figure 10: State chart for OMNIGRID Connect digital input 1.
6.2
Data
Status of digital input 1 monitored. If the signal toggles (either direction), log entries are created.
Event Logger
State with time stamp
Terminal block
+65 / -66
Asynchronous Data transfered to OMNIA Suite
periodically (Conventional Data).
Figure 11: Block diagram for spark gap monitoring.
Status
Time
state
PASSIVE
Log entry ”RAISED”
due to transition.
Log entry ”PASSIVE”
due to power-up.
Spark gap triggers
and ”opens” input 1. state
RAISED
Spark gap fixed and
”closes” input 1.
Log entry ”CEASED”
due to transition.
state
CEASED
Figure 12: Examples of visualised neutral fault data.

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Status
Time
state
ACTIVE
Log entry ”ACTIVE” due to
power-up in ”open” state.
Figure 13: Examples of visualised spark gap data for faulty installation (i.e. “not connected”).
Figure 14: Example of spark gap for outdoor use (EL-tjeneste as, NPS 240S-M)

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6.3
Digital input 2 – dedicated to surge protection/diverter signal
To protect electrical components, it is recommended always to use a surge protection device
(surge suppressor or surge diverter) for installations in the low-voltage distribution net. The pur-
pose of this device is to reduce voltage spikes caused by, for example, lightning strikes.
As surge protectors wear out over time, OMNIGRID Connect can monitor the status of the lifetime
of the fuse.
Note
As of OMNIA 3.4, surge protection signal input is not supported. However, digital input 2
is reserved for this in relation to upcoming releases.
Figure 15 Example of surge protection component with signal output.

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7.
Earth fault measurement (OMNIGRID Connect built-in)
Detection of earth fault current in solidly earthed (low resistance) net types is realized using exter-
nal summation transformer. The resulting current is measured using the OMNIGRID Connect ana-
logue input terminal block.
OMNIGRID Connect
Analogue
Figure 16: Earth fault current measurement in TT net using OMNIGRID Connect.
The OMNIGRID Connect can measure up to 2 A currents using a low-level sampling rate of 1 kHz.
Measured data is filtered using block mean calculation transforming data into 1-second samples.
Note
The majority of summation transformers is magnetic saturated delivering a maximum
current well below 2A.
Key parameters:
•Designed for current in the range: 0 – 2 A
•Summation transformer type: 200/1
•Cable length: < 8 m
•Galvanic isolation: No
•Terminal block: +A /-A

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Figure 17: Example of summation transformer 200/1 for outdoor use (Scandinavian Electric).
7.1
Data
Earth fault current (incl. maximum, minimum and average) is logged periodically. Averaging is cal-
culated on 1-second samples, and periodic logging is done every 5 minutes.
Exceeded threshold (both directions) causes additional event log entry to be created. Exceeded
threshold duration can be deduced from logs.
Data for both the above logs is transferred to OMNIA® synchronously at a specific time (i.e. not as
asynchronously alarms!).
Current is measured in “mA”.
ADC
1 kHz low level ’block’ filter Periodic Logger
Average current in logger period.
Max./Min. current with time stamp
Event Logger
Threshold :: Current with time stamp
Data transfered to OMNIA Suite
periodically (Conventional Data).
1 KHz
Synchronous
Earthing
AVG
1s
Asynchronous
OMNIA Suite OnDemand Data.
Figure 18: Block diagram for earth fault measurement.

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Threshold
Current
Time
Threshold
Current
Time
Figure 19: Examples of visualised earth fault data.