Invisible systems QC0150 User manual

Installation Manual
Mains Powered Modbus
Transmitter
QC0150
Manual Ref: QC0150
Version: JAN17 1.0

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QC0150 Mains Powered Modbus Transmitter
Installation Manual
System Concept
Version Tracking
Date
Author
Changes
v 1.0
06-01-2017
Chris Boddy
RF Transmitters connect to sensors or meters and send data to the infrastructure internet
connected Gateway on site
The Gateway stores and transfers the data to the Realtime Online cloud server over a secure
mobile cellular connection
Realtime Online provides a web based portal of visualisation dashboards, reports, graphs and
transmits out tailored automatic reports and notifications in the event of exceptions

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QC0150 Mains Powered Modbus Transmitter
Installation Manual
INDEX
Contents
1. Introduction ....................................................................................................................................4
2. Applications.....................................................................................................................................5
3. Safety ..............................................................................................................................................5
4. Requirements prior to Install..........................................................................................................7
5. Preparation .....................................................................................................................................8
6. Correct connection of the data cables into the Modbus Transmitter from the Modbus Device...9
7. Examples of Metering Equipment that is compatible with the modbus equipment. ..................10
8. Sensor Numbering ........................................................................................................................12
9. Locating Sensors ...........................................................................................................................12
7. Checking operation .......................................................................................................................14
8. Meter Validation...........................................................................................................................16
9. Appendix 1 –Part Numbers. .........................................................................................................17
Document Name
Manual Description
Version
QC0140
Unboxed Ultra RF Gateway Installation Manual
1.0
QC0141
Boxed Ultra RF Gateway Installation Manual
1.0
QC0142
3 Phase Wireless Meter Installation Manual
1.0
QC0143
21-42 Channel Sub-meter Installation Manual
1.0
QC0144
Optical Pulse Transmitter Installation Manual
1.0
QC0145a
Pulse Transmitter (Electric meter)Instalation Guide
1.0
QC0145b
Pulse Transmitter (Gas meter)Instalation Guide
1.0
QC0145c
Pulse Transmitter (Water meter)Instalation Guide
1.0
QC0146
21-42 Channel Sub Meter
1.0
QC0147
Modbus Panel Meter Installation Guide
1.0
QC0148
Pulse GRP Single/ Double Panel Meter
1.0
QC0149
Rx/Tx-ULTRA RF-Repeater Instruction Manual
1.0
QC0150
Mains Powered Modbus Transmitter
1.0
QC0151
2mtr Temperature Transmitter
1.0

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QC0150 Mains Powered Modbus Transmitter
Installation Manual
1. Introduction
Modbus connection is a high-level protocol for industrial networks developed in 1979 by
Modicon (now Schneider Automation Inc.). It defines a request/response message structure
for a client/server environment. Modbus runs over various data links i.e serial links such as
RS-232 and RS-485 including its own Modbus network.
The Modbus Transmitter has the capability to connect to several different kinds of Modbus
devices to allow data to be retrieved via a modbus connection.
Several different types of Modbus Devices are available;
Schneider PM750
Schneider PM5100
Socomec Diris A21
Socomec Diris A41
Multicube Metering Panels etc
The setup and connection of these devices to third party meters will require reference to
the relevant manufacturer’s installation documents relating to each device, as the modbus
registers can be different depending on what is required by the customer. The Modbus
Transmitter will be programmed according to its designated purpose that is confirmed
during the ordering phase.
Features
A variety of available radio frequency options
Small footprint
Automatic data collection and transmission
Wireless, range of up to 15km line of sight
Technical information
Operating frequency 868MHz (Other frequencies available 915 MHz)
Operating range up to 15km
Suitable to monitor allocated meters to which it is programmed
Storage Conditions: 0 °C to +50 °C
Relative Humidity: 25% to 95%
Operating Temperature: 0 °C to 40 °C
Mains powered
Measurement type in line with output it is monitoring.
Measurement Accuracy in line with equipment it is connected to.

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2. Applications
On installations where exsisting meters have a unused Modbus Connection.
Energy Monitoring
Bill validation
Sub-metering
Where there is a available Modbus Connection at the chosen metering point and quantity and type
of meter is confirmed, the Modbus Transmitter is capable of transmitting the chosen Registars from
the meter into the Gateway reciever for remote monitoring.
Examples (*where meter is capable)
Kwh Import
Kwh Export*
Line Voltage*
Phase Voltage*
Amps Per Phase*
Other registars may be available when the meter type is confirmed as the Modbus Transmitter can
be programmed at the factory to accomodate many different senarios but is limited to what the
chosen meter can deliver.
3. Safety
This manual gives details of safe installation of Modbus Transmitter. Safety may be
impaired if the instructions are not followed or the system is used in a manner not specified
by the manufacturer. Labels give details of equipment ratings for safe operation. Take time
to examine all labels before commencing installation. Safety symbols on the meter have
specific meanings.
Caution Risk of Danger
Refer to Instructions
Danger
Risk of Electric Shock
Safety may be impaired if the instructions are not followed or the meter is used in a manner
not specified by the manufacturer.
The Device contains no user serviceable parts. Field wiring and commissioning should only
be carried out by qualified personnel, in compliance with applicable national regulations.
E.g. National Electrical Code (NEC) for US; Canadian Electrical Code for Canada
For further Information contact the manufacturer:
Address: Invisible Systems, 9 Beetham Road, Milnthorpe, Cumbria, LA7 7QL
Web: www.invisible-systems,com

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QC0150 Mains Powered Modbus Transmitter
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Voltage Circuits Safety
The Modbus Transmitter requires a Mains supply rated at 240v and comes complete with
13amp plug as standard. An adequate protection device must be available within the
attached circuit to provide a safe means of disconnection.
Caution
“Care should be taken when mounting and drilling holes in the
designated cabinet as the cables present on the inside of the
enclosure will need to be avoided”
“When connecting to this type of meter the correct safety protocols for site
would need to be followed when working on electrical equipment and reference
to the particular meter manual will be required , it is recomended to contact a
qualified electrician for this work”
Maintenance
The equipment should be maintained in good working order. Damaged equipment must be
returned to the manufacturer (or his authorised agent) for repair. The meter may be
cleaned by wiping lightly with a soft cloth. No solvents or cleaning agents should be used.
All inputs and supplies must be isolated before cleaning any part of the equipment.

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4. Requirements prior to Install.
Information Needed from allocated metering positions.
Meter Type/Model
Quantity
Circuit Names
Modbus Address
Registar Reads Required
Confirmation of compatable Baud Rate Settings
Confirmation of compatable Parity Settings
The below table will need to be filled in prior to receiveing the Modbus Transmitter as it will be
programmed to your specific requirements. This can be emailed to you by Invisible Systems Ltd prior
to equipment being sent. Ref QC0151.
It is Advised that the maximum number of registar addresses on one Modbus Transmitter be 30.
This Info will be used to set up your Realtime Online Portal by Invisible Systems Prior to installation.

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5. Preparation
Ensure the area you are going to be working in is clean and tidy. This
includes any tools or equipment you have are stored neatly away so as to
ensure there is no trip hazard.
Find a suitable location for mounting the Modbus Transmitter. Clear of
obstacles, on a flat dry surface not in close proximity to water. Also
ensure there are no buried cables or pipe work close to a power outlet.
Note
It is advised that if where possible the Modbus Transmitter is fitted to a
5amp switched fused spur to ensure inadvertant disconnection from
supply. Refer to qualified electrician should this be needed.
Example below shows a Modbus Transmitter fitted to associated meters with a reciever in
situe also

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6. Correct connection of the data cables into the Modbus Transmitter
from the Modbus Device.
The data connection is made by three wires from the allocated Modbus Meters into the
Modbus Transmitter, the connection of these cables is important as they are polarity
sensitive and will not work if connected incorrectly. There is a label located on the side of
the Modbus Transmitter showing correct orientation of the cables for connection.
“ Under no circumstances should the cover be removed while the Transmitter is plugged
in the available mains supply”
“Under no circumstances should the Transmitter be mounted on any form of asbestos
boards- Check asbestos register prior to any work commencing”
Example-Modbus Connections
As shown each meter is show as a slave, it is advisable that the last meter in the modbus
loop be checked to see if there is a 120 ohm Termination Resistor present. This is more
important where the modbus chain is approaching 100mtrs as the resistor helps “clean”the
signal being sent by the meters to the Modbus Transmitter.
The installation of the data cable between the Modbus Transmitter and the Modbus Device
must be fitted in such a way that sufficient mechanical protection is provided as per IEE
Wiring Regulations 17th Edition
Modbus
Transmitter

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QC0150 Mains Powered Modbus Transmitter
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RS485 Connections
The connection from the Modbus Transmitter (RS485) shall only be connected to low
voltage (SELV) circuits. The maximum operating voltage for an RS485 network is 12Vdc.
Cables with a minimum of 1 twisted pair + 1 single core with an overall shield should be
used. A twisted pair should be used for network lines A(+) and B(‐) and a single core or
second twisted pair for 0V. Many specialist cables are available for RS485 but shielded CAT
5e cable (4 twisted pairs) may also be used.
Cables running within the electrical enclosure may come close to high voltages and
therefore must be insulated to the following minimum specification:
RS485 Cables: UL 1015, 105 DegC , 600Vac. 30‐14 AWG.
7. Examples of Metering Equipment that is compatible with the
modbus equipment.
Several different types of Modbus Devices are available;
Schneider PM750
The Sequence below shows how to record/change the values in the meter.

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Example of Registers required to be recorded to allow correct operation; if other registers
are required further info can be found in the manufactures manual
Socomec Diris A10
Diris A21/A40 Connections
The Table below shows the values that need to be advised in the meter..
EM21 Meter
Mtr Type
Input
Registar
Unit
PM750
4000
Total KWH High word
kWh
Mtr Type
Input
Registar
Unit
Diris A10
50780
Total KWH High word
kWh
Diris A20
857
Total KWH High word
kWh
Diris A41
50781
Total KWH High word
kWh

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8. Sensor Numbering
Example
Each sensor is supplied with a unique serial number marked on the side together with a barcode
which is used to identify the sensor on the Realtime-Online dashboard.
It is vital that these numbers are accurately recorded as otherwise it will be impossible to identify
the sensor in ISL Setup or the server dashboard for the specific site.
Note that a sensor number cannot appear twice on the same site, but can appear on more than one
site dashboard.
9. Locating Sensors
Realtime-Online™ Sensors use radio frequency communication to a local gateway. The distance
between sensors and the gateway can also be very long (up to 15Km line of sight). However,
environmental factors such as walls and furniture can reduce this distance considerably so optimal
placement of sensors is important.
Note that this document does not specifically cover the installation of Gateways which are covered
in a separate document, (see index) but the following general guidance is given.
When placing sensors, avoid the following:
a. Placing the transmitter in metal enclosures such as a distribution boards.
b. The transmitters are splashproof and are suitable for installation in outdoor areas, but are
not 100% waterproof. Do not install them in positions where they are liable to be
submerged.
c. Do not install the transmitters close to other RF sources such as alarm systems, door
openers or other radio systems. Although the amount of RF energy transmitted by the
sensors is very small indeed, there is a possibility that they could interfere with other
electrical devices, so they must not be installed close to other devices which could be
affected e.g. medical devices or wireless alarm systems.

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When siting the gateway, try to ensure that the location is approximately equidistant in radio signal
terms from all the sensors.
Typically, sensors can be expected to pass through 4 –5 normal internal walls without difficulty.
The following illustration shows how sensors which are hidden behind large metal objects like tanks
or steel walls may have difficulty in transmitting to the gateway.
Notes
Care must be taken when installing this sensor as live electrical circuits are usually within
the vicinity. Seek to guidance of a qualified electrician if you are unsure.
Possible
repeater
location

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7. Checking operation
Following installation of the Pulse transmitter, it is suggested that the operation is checked to
ensure the transmitter is being received by the Gateway.
Open Ultra RF Gateway Setup –This should be located on the desktop of your laptop.
On first use, if requested, select the USB lead being used and highlight for use.
Screen information being displayed.
The Screen will show the transmitters it can see in range of the receiver, these can be sorted by
sensor type or ID as per preference.
Name lead
connection and
select it in drop
down list

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Each Transmitter will show the following
1. Sensor ID
2. Transmitter Type
3. Battery Voltage
4. Values being received
5. Signal Strength and frequency
It is important to check all of this information to confirm that each sensor is being seen by the
gateway and at regular intervals in relation to (5). Blue colour dots show direct messages being
received and Orange colour dots show messages received via repeaters.
Correct setup and operation of Realtime-online, will require all the Sensor ID’s and Transmitter types
in conjunction with the Gateway ID.
The RSSI is shown in dBm with a bar chart showing signal strength. This is an important parameter.
The table below shows dBm ranges in relation to Signal strength.
The range shown above reads -100dBm this is shown in the table as a Marginal signal therefore will
need improving either by reviewing the transmitter location, moving the Gateway closer or adding a
signal repeater in between transmitter and receiver.
Value
RSSI
dBm
Signal
Strength
Value
RSSI
dBm
Signal
Strength
2
-109
Marginal
17
-79
Good
3
-107
Marginal
18
-77
Good
4
-105
Marginal
19
-75
Good
5
-103
Marginal
20
-73
Excellent
6
-101
Marginal
21
-71
Excellent
7
-99
Marginal
22
-69
Excellent
8
-97
Marginal
23
-67
Excellent
9
-95
Marginal
24
-65
Excellent
10
-93
OK
25
-63
Excellent
11
-91
OK
26
-61
Excellent
12
-89
OK
27
-59
Excellent
13
-87
OK
28
-57
Excellent
14
-85
OK
29
-55
Excellent
15
-83
Good
30
-53
Excellent
16
-81
Good
Further technical reference and product info can be obtained from associated data sheets

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8. Meter Validation
To confirm this meter readings will need to be taken at different intervals and entered into the
meter validation page on Realtime-Online(tm).
Check meter validation(Reports>Meter Validation) then pick sensor ID that is fitted
Enter the reading obtained with date and time > Submit
This will need to be done twice as a minimum to allow the Realtime-online™ software to check the
readings. (the longer the time between reading the better the result). An initial check whilst on site
can be done with a few hours between readings however for full and accurate calibration, ideally 7
days between readings is desirable (48 hours minimum).
Click the two readings entered on the left of the screen and then Compare Readings the system will
then work out and validate the readings being taken are correct.
If the suggested pulse ratio is significatly diferent to the current Pulse Ratio the amend the Pulse
Factor in Sensor setup to help aid in the calibration of the equipment.
The more readings taken over time help prove correct operation.

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QC0150 Mains Powered Modbus Transmitter
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9. Appendix 1 –Part Numbers.
Part Number
Item
Description
3999-913-2188
Ultra RF-Modbus
Modbus Transmitter 2m PVC Mains
Powered
3999-901-1212
Ultra RF Repeater
RF Signal Repeater Mains Powered