elsner elektronik KNX RW Series User manual

KNX RW
Rain/Wind Sensor
Technical specifications and installation instructions
EN
Elsner Elektronik GmbH Control and Automation Engineering
Herdweg 7
D – 75391 Gechingen Phone [phone] / 93 97-0 [email protected]
Germany Fax [phone] / 93 97-20 www.elsner-elektronik.de
KNX RW 24 V
KNX RW 230 V
No. 70126
No. 70127

2 Description
Rain/Wind Sensor KNX RW • Status: 19.08.2013 • Technical changes reserved. Errors reserved.
1. Description
The Rain/Wind Sensor KNX RW measures precipitation and wind speed and trans-
fers the values to the KNX system. Four switching outputs with three adjustable thresh-
old values as well as additional AND and OR logic gates are available. The sensor sys-
tem, the evaluation electronics and the electronics of the bus connection are mounted
in a compact housing.
Functions:
•Precipitation perception: The surface of the sensor is heated so that only
drops and flakes are recognised as precipitation but not fog or dew. If it stops
raining or snowing, the sensor dries quickly and the precipitation message
ends
•Wind measurement: The wind strength measurement takes place
electronically and thus noiselessly and reliably, even during hail, snow and
sub-zero temperatures. Even turbulent air and anabatic winds in the vicinity of
the weather station are recorded
•4 switching outputs, 3 with adjustable threshold values (Threshold values
can be set by parameter or via communication objects)
•8 AND and 8 OR logic gates with each 4 inputs. Every switching incident as
well as 8 logic inputs (in the form of communication objects) may be used as
inputs for the logic gates. The output of each gate may optionally be configured
as 1 bit or 2 x 8 bits
Configuration is made using the KNX software ETS. The programme file (format VD),
the data sheet and the manual can be downloaded from the Elsner Elektronik
homepage on www.elsner-elektronik.de in the “Service” menu.
1.1. Technical specifications
Housing Plastic material
Colour White/ translucent
Mounting On-wall
Protection category IP 44
Dimensions approx. 96 × 77 × 118 (W × H × D, mm)
Weight 230 V AC version: approx. 240 g,
24 V DC version: approx. 170 g
Ambient temperature Operation -30…+50°C, storage -30…+70°C
Operating voltage Available for 230 V AC or 24 V DC (20 V AC).
An appropriate power supply unit can be obtained from
Elsner Elektronik.
Cable cross-section Massive conductors of up to 1.5 mm² or conductors
with fine wires
Current 230 V AC version: max. 20 mA, 24 V DC version max.
100 mA, residual ripple 10%
Data output KNX +/- bus terminal plug

3 Installation and commissioning
Rain/Wind Sensor KNX RW • Status: 19.08.2013 • Technical changes reserved. Errors reserved.
The product conforms with the provisions of EC guidelines
• EMC Directive 2004/108/EC
• Low Voltage Directive 2006/95/EC
The following standards and/or technical specifications have been applied:
• EN 50491-5-1: 2010
• EN 50491-5-2: 2011
2. Installation and commissioning
2.1. Installation notes
Installation, testing, operational start-up and troubleshooting should
only be performed by an electrician.
DANGER!
Risk to life from live voltage (mains voltage)!
There are unprotected live components within the device.
• National legal regulations are to be followed.
• Ensure that all lines to be assembled are free of voltage and take
precautions against accidental switching on.
• Do not use the device if it is damaged.
• Take the device or system out of service and secure it against
unintentional use, if it can be assumed, that risk-free operation is no
longer guaranteed.
The device is only to be used for its intended purpose. Any improper modification or
failure to follow the operating instructions voids any and all warranty and guarantee
claims.
After unpacking the device, check it immediately for possible mechanical damage. If it
has been damaged in transport, inform the supplier immediately.
BCU type Own micro controller
PEI type 0
Group addresses max. 254
Allocations max. 255
Commmunication objects 81
Heating rain sensor approx. 1,2 W (230 V and 24 V)
Measurement range wind 0...70 m/s
Resolution (wind) <10% of the measured value
Accuracy (wind) ±25% at 0...15m/s, at an angle of attack of 45°,
pole mounting

4 Installation and commissioning
Rain/Wind Sensor KNX RW • Status: 19.08.2013 • Technical changes reserved. Errors reserved.
The device may only be used as a fixed-site installation; that means only when assem-
bled and after conclusion of all installation and operational start-up tasks and only in
the surroundings designated for it.
Elsner Elektronik is not liable for any changes in norms and standards which may occur
after publication of these operating instructions.
2.2. Location
Select an assembly location at the building where precipitation and wind may be col-
lected by the sensors unobstructedly. Do not assemble any construction components
above the sensor from where water may drop on to the rain and wind sensor after it
has stopped raining or snowing. At least 60 cm of free space must be left beneath the
device to enable correct wind measurement and prevent snowing in when there is
snow. The distance also protects the unit against damage by birds.
2.3. Mounting the sensor
2.3.1. Attaching the mount
The sensor comes with a combination wall/pole mount. The mount comes adhered by
adhesive strips to the rear side of the housing. Fasten the mount vertically onto the wall
or pole.
Fig. 1
The rain/wind sensor must be mounted on a
vertical wall (or a pole).
Wall
or
pole
min.
60 cm
Fig. 2
The rain/wind sensor must be mounted in the
horizontal transverse direction (horizontally).
Horizontal

5 Installation and commissioning
Rain/Wind Sensor KNX RW • Status: 19.08.2013 • Technical changes reserved. Errors reserved.
Fig. 3
When wall mounting: flat side on wall, crescent-
shaped collar upward.
Collar
Fig. 4
When pole mounting: curved side on pole, collar
downward.
Collar
Fig. 5
Different mounting arms are available from El-
sner Elektronik as additional, optional accesso-
ries for flexible installation of the weather station
on a wall, pole or beam.
Example of the use of a mounting arm: Due to
flexible ball joints, the sensor can be brought
into ideal position.
Fig. 6
Example use of the hinge arm mounting:
With the hinge arm mounting, the weather sta-
tion projects from beneath the roof overhang.
Sun, wind and precipitation can act upon the
sensors without hindrance.

6 Installation and commissioning
Rain/Wind Sensor KNX RW • Status: 19.08.2013 • Technical changes reserved. Errors reserved.
2.3.2. View of rear side and drill hole plan
Fig. 7
Example use of the hinge arm mounting:
Fitting to a pole with worm drive hose clips
Langloch 7,5 x 5 mm
Fig. 8 a+b
Drill hole plan
Dimensions of rear side of
housing with bracket. Sub-
ject to change for technical
enhancement.

7 Installation and commissioning
Rain/Wind Sensor KNX RW • Status: 19.08.2013 • Technical changes reserved. Errors reserved.
2.3.3. Preparing the sensor
The sensor cover snaps in on the left and right along the bottom edge (see Fig.). The
cover of the 230V model is also screwed on top. Remove the cover. Proceed carefully,
so as not to pull off the wire connecting the PCB in the bottom part with the rain sensor
in the cover (soldered cable connection in case of 230 V AC version, cable with plug in
case of 24 V DC version).
Lead the cable for the voltage supply and bus connection through the rubber seals on
the bottom of the device and connect Voltage L/N and Bus +/- to the terminals provid-
ed.
For 24V devices the connection cable must be plugged in between the cover and circuit
board.
Fig. 9
1 Screw-on cover (230V
device)
2 Cover with rain sensor
3) Cover Snaps
4 Bottom part of housing
3
4
Unsnap cover and
remove upwards
2
1
Fig. 10
Remove the cable shielding under the circuit
board and only feed the connector cables up-
wards through the openings in the circuit
board.

8 Installation and commissioning
Rain/Wind Sensor KNX RW • Status: 19.08.2013 • Technical changes reserved. Errors reserved.
2.3.4. PCB Layout
230 V AC version
Fig. 11
1) Cable connection to the rain
sensor in the housing cover
2) Opening for the cable for the
voltage supply
3) Tension clamp for voltage
supply (230 V AC), suitable for
massive conductors of up to
1.5 mm² or conductors with
fine wires
4) Slot for KNX clamp +/-
5 Opening for the bus cable
6) Programming pushbutton for
the teach-in of the device
7) Programming LED
23
4
6
7
5
1

9 Installation and commissioning
Rain/Wind Sensor KNX RW • Status: 19.08.2013 • Technical changes reserved. Errors reserved.
24 V DC version
2.3.5. Mounting the sensor
Close the housing by putting the cover back over the bottom part. The cover must snap
in on the left and right with a definite “click”.
Fig. 12
1 Slot for cable connection to
the rain sensor in the housing
cover
2 Tension clamp for voltage
supply (24 V DC/20 V AC).
Massive conductors of up to
1.5 mm² or conductors with
fine wires. Terminal configu-
ration independent from po-
larity (+/- or -/+).
3 Opening for the cable for the
voltage supply and for bus ca-
ble
4SlotforKNXclamp+/-
5 Programming pushbutton for
the teach-in of the device
6 Programming LED
231
5
6
4
Fig. 13
Make sure the cover and bottom part are
properly snapped together! This picture is
looking at the closed sensor from under-
neath.
Fastening

10 Addressing of the device at the bus
Rain/Wind Sensor KNX RW • Status: 19.08.2013 • Technical changes reserved. Errors reserved.
DANGER!
There is a risk to life from the live voltage on a 230 V device!
• The cover must be screwed on in operation.
To remove it, the sensor can be simply pulled upwards out of the mount, against the
resistance of the fastening.
2.4. Notes on mounting and commissioning
Do not open the device if water (rain) might ingress: even some drops might damage
the electronic system.
Observe the correct connections. Incorrect connections may destroy the sensor or con-
nected electronic devices.
The measured wind value and thus all other wind switching outputs may only be sup-
plied 60 seconds after the supply voltage has been connected.
After the auxiliary voltage has been applied, the device will enter an initialisation phase
lasting a few seconds. During this phase no information can be received via the bus.
3. Addressing of the device at the bus
The device is supplied with the bus address 15.15.250. You can program another ad-
dress into the ETS by overwriting the 15.15.250 address or by teaching via the pro-
gramming key on the circuit board inside the housing.
Fig. 14
With the 230V model, screw the cover on to
the underpart, to prevent unauthorised or ac-
cidental opening.
Fig. 15
Push the housing from above into the fas-
tened mount. The bumps on the mount must
snap into the rails in the housing.

11 Maintenance
Rain/Wind Sensor KNX RW • Status: 19.08.2013 • Technical changes reserved. Errors reserved.
DANGER!
Risk to life from live voltage (mains voltage)!
• With the 230V model, bus addressing via the programming key
should only be done by an accredited electrician.
• Do not touch any components on the circuit board while pressing
the key.
4. Maintenance
DANGER!
There is a risk to life from the live voltage (mains voltage)!
If you come into contact with live components in the device, (e.g. caused
also by a jet of water) there is the risk of an electric shock with
230 V devices.
Risk of injury caused by components moved automatically!
The automatic control can start system components and place people in
danger (e.g. moving windows/awnings if a rain/wind alarm has been
triggered while cleaning).
• Always isolate the device from the mains for servicing and cleaning
(e. g. switch off or remove the fuse).
The device must regularly be checked for dirt twice a year and cleaned if necessary. In
case of severe dirt, the sensor may not work properly anymore.
ATTENTION
The device can be damaged if significant volumes of water penetrate the
housing.
• Do not clean with high pressure cleaners or steam jets.