Relay RelAir ICS User manual

Wireless M-Bus and OMS
Indoor Climate Sensor
RelAir ICS
Temperature and relative humidity
User Manual

User Manual RelAir ICS ·03/2019 · VERSION 1.0
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Table of Content
1 Functional description...............................................................................................................3
2 Scope of delivery ......................................................................................................................3
2 Mounting...................................................................................................................................3
2.1 Where to install................................................................................................................3
2.3 Open housing..................................................................................................................3
2.4 Mounting plate.................................................................................................................4
2.5 Circuit board ....................................................................................................................5
2.5.1 Remove the Circuit board.......................................................................................5
2.5.2 Configuration..........................................................................................................5
2.5.3 Insert batteries........................................................................................................6
2.5.4 PCB mounting........................................................................................................6
2.5.5 Front Cover ............................................................................................................6
3 Telegram description.................................................................................................................7
4 Label.........................................................................................................................................8
5 Technical Data..........................................................................................................................9
5.1 General............................................................................................................................9
5.2 Wireless M-Bus Interface.................................................................................................9
5.3 Power Supply ..................................................................................................................9
5.4 Sensors ...........................................................................................................................9
5.5 Ordering Information........................................................................................................9
6 CE Declaration........................................................................................................................10
© Relay GmbH 2019
www.relay.de

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1 Functional description
The Relay radio humidity and temperature sensor RelAir ICS can be integrated into an
existing wireless M-Bus OMS network and provides reliable temperature measurement data.
The room temperature and humidity can be monitored wirelessly at any time. A further
advantage of the room climate sensor is its easy assembly. The configuration can be done
local via dip switches. The battery life is up to 10 years for this device depending on the
transmit interval. The two AA batteries are easily replaceable and have a reverse polarity
protection. The following graphic shows an application of the sensor:
2 Scope of delivery
Equipment supplied:
•OMS radio humidity and temperature sensor with casing and mounting plate
•2 AA-size alkaline batteries
•Mounting set consisting of 2 dowels (5mm) and 2 screws (3 x 30mm)
•Mounting instruction
2 Mounting
2.1 Where to install
The OMS radio humidity and temperature sensor should not be exposed to direct sunlight. In
addition, the sensor should not be mounted on an outside wall, near to an outer door or at a
distance of less than 1m to a heater. The distance from the floor should be at least 1,5m. This
device is designed for wall mounting or mounting on an in-wall box (60 mm).
2.3 Open housing
Before the case is ready for mounting it has to be opened. The locks at the bottom of the casing
must be released one after another. For that a slotted screwdriver is put into the upper part of
the opening.

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Repeat this process at the second lock. After that the front cover can be lifted from the mounting
plate.
2.4 Mounting plate
The mounting plate is marked with UP and DOWN for the correct orientation. It can now be
mounted on the wall with the help of the supplied dowels and screws.
The screw head may not extend beyond the edge of the
mounting plate, otherwise the electronics can be damaged
when closing the housing!
The long holes arranged in a circle at a distance of 60mm can
be used for easy mounting on a flush-mounting or wall mount
box.

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2.5 Circuit board
2.5.1 Remove the Circuit board
Now the printed circuit board is tilted out of the front cover by pulling at the edge of the
semicircular cavity.
2.5.2 Configuration
The configuration of the OMS in house /humidity and temperature sensors can be done via DIP
switch. The functions of the DIP switch are shown in a table below the battery at the PCB
(between the battery holders). Before changing a configuration, the batteries should be
removed. Then the configuration can be customized via the DIP switches. After that the
batteries can be inserted again. The changes are applied with transmission of the next telegram
or with the restart of the sensor.
Encryption
1
Enable
ON
Disable
OFF
wM-Bus
Mode
2
S-Mode
ON
T-Mode
OFF
TX
Interval
3
4
1 min
ON
ON
5 min
OFF
ON
10 min
ON
OFF
15 min
OFF
OFF
Between taking out the batteries and re-insert should be at least 30 seconds to secure
that the device has done a reboot safely. Please contact us by email to inf[email protected]
to ask for the key if you want to use the encryption..

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2.5.3 Insert batteries
Now the batteries will be inserted. Therefor it is important to secure the correct polarity. Here
standard AA cells with a voltage of 1.5 V are used.
2.5.4 PCB mounting
Thereafter the circuit board with the batteries ahead is placed back into the front cover.
Attention on the orientation! On the circuit board and on the
label of the Front cover it is marked with arrows up.
2.5.5 Front Cover
As a last step, the front cover together with the electronics is clipped on the mounting plate.
For that the front Cover is hinged to the upper edge of the mounting plate and then pressed
firmly.

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3 Telegram description
The telegram has a specific basic structure (without checksum):
Field
Description
Value
L-Field
Length of telegram 46 Byte
2Eh
C-Field
Type of telegram: SND_NR
44h
M-Field
Manufacturer-ID:
REL = Relay GmbH
„REL“ is identical with the part „Manufacturer ID“ of
the serial number at the equipment indicator.
ACh
M-Field
48h
A-Field
Serial number:
ID = e.g. 08154711
Identical with the part „Fabrication Number“ of the
serial number at the equipment indicator.
11h
A-Field
47h
A-Field
15h
A-Field
08h
A-Field
Version: 2; Identical with the part „Fabrication Block“
of the serial number at the equipment indicator.
02h
A-Field
Type of device: Room sensor
1Bh
Ci-Field
Control field: „Response from Device”
7Ah
AccNo
Access number: e.g. 65. Is increased by 1 at each
transmission with updated data.
41h
Status
Status field: Normally 0. In case of „battery empty“
the „LowPower“ and the „Permanent error“ bit are
set.
00h
Config.Word
Configuration field: NNNNCCHHb If encryption is
deactivated then 00h, otherwise the number of
encrypted blocks (e.g. 1 block = 10h).
00h
Config.Word
Configuration field: BAS0MMMMb If encryption is
deactivated then 00h, otherwise encryption mode 5
(05h). If potential for synchronous release the S bit is
set additionally.
00h
AES Ver.
AES verification
2Fh
AES Ver.
AES verification
2Fh
DR1
DIF: 0Ah = 4 Digit BCD coded
0Ah
DR1
VIF: 66h = temperature * 10^(-1) °C
66h
DR1
Value: e.g. 23,7°C
37h
DR1
02h
DR2
DIF: 0Ah = 4 Digit BCD coded
0Ah
DR2
VIF: FBh = First extension table
FBh
DR2
VIFE: 1Ah = relative humidity * 10-1 %
1Ah
DR2
Value: e.g. 37,8%
78h
DR2
03h

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DR3
DIF: 02h = 16Bit Integer / Binary
02h
DR3
VIF: FDh = Second extension table
FDh
DR3
VIFE0: 97h = Error Flags
97h
DR3
VIFE1: 1Dh = Standard Conform
1Dh
DR3
Normally 0000h. In case „battery empty“ the „Battery
low“ bit is set.
00h
DR3
00h
Fill
Fill byte
2Fh
Fill
Fill byte
2Fh
Fill
Fill byte
2Fh
Fill
Fill byte
2Fh
Fill
Fill byte
2Fh
Fill
Fill byte
2Fh
Fill
Fill byte
2Fh
Fill
Fill byte
2Fh
Fill
Fill byte
2Fh
Fill
Fill byte
2Fh
Fill
Fill byte
2Fh
Fill
Fill byte
2Fh
Fill
Fill byte
2Fh
Fill
Fill byte
2Fh
Fill
Fill byte
2Fh
4 Label
A Label is applied on the packaging and on the casing of the device. This contains the following
information:
Logo of Relay company
Description of device
Name of device
Order number
Serial number according to
DIN 43863-5, also as data
matrix code
CE conformity
Orientation arrows
WEEE conformity

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5 Technical Data
5.1 General
Mounting
Wall mounting or mounting on an in-wall box (60 mm)
Material
ABS, white
W x L x H
(80 x 80 x 25) mm
Protective class
IP40
Operating temperature
-10°C to +55°C
Storage temperature
-20 to +70°C
Humidity
10% to 80% (not condensing)
5.2 Wireless M-Bus Interface
Standard
EN13757-4 and EN13757-3, compatible to OMS
Transmit mode
S1 or T1 (unidirectional) / Frame Format A
Encryption
Mode 0 (not encrypted) or Mode 5
Transmit interval
Configurable by DIP switches: 1 min, 5 min, 10 min, 15 min
5.3 Power Supply
Battery
2 replaceable AA alkaline cells (industrial grade) in scope of supply
Batterie lifetime
Transmit interval 15 min. / up to 10 years
5.4 Sensors
Temperature range
-10°C to +55°C
Temperature accuracy
± 0.3 °C
Temperature resolution
0.1 °C
Humidity range
20% RH to 80% RH
Humidity accuracy
± 2% RH
Humidity resolution
0.1% RH
5.5 Ordering Information
RelAir ICS
Wireless M-Bus Indoor Climate Sensor (Temperature + Humidity)

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6 CE Declaration

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Notes: