elsner elektronik KNX LW sl User manual

Technical specifications and installation instructions
Item number 70164
EN
Elsner Elektronik GmbH Control and Automation Engineering
Sohlengrund 16
D - 75395 Ostelsheim Phone [phone] / 30 945-0 [email protected]
Germany Fax [phone] www.elsner-elektronik.de
KNX LW sl
Brightness and Wind Sensor

2 Description
Brightness and Wind Sensor KNX LW sl • Status: 05.11.2014 • Errors excepted. Subject to technical changes.
1. Description
The Brightness and Wind Sensor KNX LW sl for the KNX building bus system
measures brightness and wind speed.
All values can be used for the control of limit dependent switching outputs. States can
be linked via AND logic gates and OR logic gates. Multi-function modules change input
data as required by means of calculations, querying a condition, or converting the data
point type.
The compact housing of the KNX LW sl accommodates the sensors, evaluation cir-
cuits and bus-coupling electronics.
Functions:
•Brightness: The current light intensity is measured by a sensor
•Wind measurement: The wind strength is measured electronically and thus
noiselessly and reliably, even during hail, snow and sub-zero temperatures.
Even turbulent air and rising winds in the vicinity of the device are recorded
•Switching outputs for all measured and computed values. Threshold values
can be adjusted per parameter or via communication objects
•8 AND and 8 OR logic gates, each with 4 inputs. All switching events as well
as 16 logic inputs (in the form of communications objects) can be used as
inputs for the logic gates. The output of each gate can be configured optionally
as 1-bit or 2 x 8-bit
•8 multi-function modules (computers) for changing the input data by
calculations, by querying a condition or by converting the data point type
Die Konfiguration erfolgt mit der KNX-Software ETS. Produktdatei, Datenblatt und
Handbuch stehen auf der Homepage von Elsner Elektronik unter
www.elsner-elektronik.de im Menübereich „Service“ zum Download bereit.
1.0.1. Deliverables
• Sensor unit
• Stainless steel installation band for pole installation
• 4×50 mm stainless steel roundhead screws and 6×30 mm dowels for wall
mounting. Use fixing materials that are suitable for the base!
• Size 6 Torx bit
1.1. Technical specification
Housing Plastic
Colour White / Translucent
Assembly Surface mount
Protection category IP 44
Dimensions approx. 62 × 71 × 145 (W × H × D, mm)
Weight approx. 85 g
Ambient temperature Operation -30…+50°C, storage -30…+70°C

3 Installation and start-up
Brightness and Wind Sensor KNX LW sl • Status: 05.11.2014 • Errors excepted. Subject to technical changes.
The product is compliant with the provisions of EC guidelines:
• EMC Directive 2004/108/EC
The following standards and/or technical specifications were applied:
• EN 50491-5-1: 2010
• EN 50491-5-2: 2011
• EN 60730-1: 2011
2. Installation and start-up
2.1. Installation notes
Installation, testing, operational start-up and troubleshooting should
only be performed by an electrician.
Auxiliary supply 12…40 V DC, 12…28 V AC.
An appropriate power supply unit can be purchased
from Elsner Elektronik.
Auxiliary current at 12V DC: max. 185 mA
at 24V DC: max. 90 mA
at 24V AC: max. 82 mA
Bus current max. 10 mA
Data output KNX +/-
BCU type Integrated microcontroller
PEI type 0
Group addresses max. 2000
Assignments max. 2000
Communication objects 303
Wind sensor:
Measurement range 0 m/s … 35 m/s
Resolution 0.1 m/s
Accuracy ±15% of the measurement value when incoming flow
is 45°…315°
(Frontal incoming flow corresponds to 180°)
Brightness sensor:
Measurement range 0 lux … 150,000 lux
Resolution 1 lux at 0…255 lux
4 lux at 256…2,645 lux
163 lux at 2,646…128,256 lux
762 lux at 128,257…150,000 lux
Accuracy ±15% of the measurement value at 35 lux … 150,000
lux

4 Installation and start-up
Brightness and Wind Sensor KNX LW sl • Status: 05.11.2014 • Errors excepted. Subject to technical changes.
CAUTION!
Live voltage!
There are unprotected live components inside 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.
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. Installation location
Select an installation position on the building where the sensors can measure wind
and sunshine without hindrance. The weather station should not be shaded by struc-
tures or, for example, trees.
At least 60 cm of clearance must be left around the device. This facilitates correct wind
speed measurement without eddies. At the same time, this prevents spray (raindrops
hitting the device) or snow (snow penetration) from impairing the measurement. This
also prevents birds from biting it.
Please ensure that the extended awning does not cast shade on the unit, and that it is
protected from the wind.
Fig. 1
There must be at least 60 cm clearance to oth-
er elements (structures, construction parts,
etc.) below, to the sides and in front of the de-
vice.
60 cm

5 Installation and start-up
Brightness and Wind Sensor KNX LW sl • Status: 05.11.2014 • Errors excepted. Subject to technical changes.
Fig. 2
The device must be attached to a vertical wall
(or a pole).
wall
or
pole
90°
Fig. 3
The device must be mounted in the horizontal
(transverse) direction.
Horizontal
Fig. 4
The device must be aligned in the direction of
the façade which is to be shaded.