Velux KLA S105 Manual page 8

The wind and rain sensor consists of a rain sensor surface and a wind
wheel. It is used for automatic control of comfort ventilation. The sensor
is equipped with a potential-free change-over contact with a contact
rating of 20 V / 1.8 A. In the event of rain and/or wind, the change-over
contact switches (from N/O contact to N/C contact) and the modular
skylight closes.
Wind trigger threshold, actuation delay, drop out delay and actuation in
the event of power failure are set on a 6 pole DIP switch in the sensor.
Function
Wind triggered actuation
The potential-free contact switches when the wind sensor is actuated.
The red light-emitting diode in the sensor is lit. The wind speed at which
the wind sensor is actuated is settable.
Note: Depending on your settings, the wind sensor will be reset 10 or
20 minutes after the last sensor actuation.
Rain triggered actuation
The potential-free contact switches when the rain sensor is actuated.
The red light-emitting diode in the sensor is lit.
Note: Depending on your settings, the rain sensor will be reset 10 or
20 minutes after the last sensor actuation.
Technical data
Voltage from power supply unit KUX 110: 20 V d.c.
Circuit output: 1 potential-free change-over contact
Contact rating: 20 V / 1.8 A
Dimensions: 80 x 160 x 55 mm (WxHxD, without wind wheel)
Weight: Approx 0.7 kg
Protection degree: IP65
Setting of wind trigger threshold: Approx 3 to 14 m/s (±20%)
Setting of wind or rain drop out delay: 10 min/20 min
Setting of wind actuation delay: 2 sec/5 sec
Setting of monitoring: OFF/ON
8 VELUX
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