Functions; Functions And Operation; Installation; Warnings For Knx/Eib Installations - Gewiss GW90800 Bedienungsanleitung

3.2 Functions

Functions and Operation:

● Brightness and position of the sun:
The current light intensity is measured by
means of a sensor. At the same time, the weather station calculates the position of the sun (azimuth and
elevation) on the basis of time and location
● Wind measurement:
The measurement of wind speed is accomplished electronically and thus noiseless and reliable even in
case of hail, snow and minus temperature.
Air swirls and up-draught in the radius of the weather station are collected, too
● Precipitation perception:
The surface of the sensor is heated so that only drops
and fl akes are recognized as precipitation but not fog or dew.
If it stops raining or snowing, the sensor dries quickly and the precipitation message ends
● Temperature measurement
● Week and calendar time switch:
The weather station receives time and date from the integrated GPS receiver.
The week time switch operates up to 4 different periods each day.
With the calendar time switch, you may determine 3 additional
periods where the time switch accomplishes up to 2 activations and deactivations each day.
The Switching outputs can be used as communication objects. The switching times are set by parameter
or via communication objects.
● Switching outputs
for all measured and calculated 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 confi gured as
1 bit or 2 x 8 bits

4 INSTALLATION

WARNING: the installation of the device must be exclusively done by qualifi ed
personnel, following the regulations in force and the guidelines for KNX/EIB
installations.

4.1 Warnings for KNX/EIB installations

1. The length of the bus line between the KNX Weather Station unit and the power supply unit must not
exceed 350 metres.
2. The length of the bus line between the KNX Weather Station unit and the most distant KNX/EIB device
must not exceed 700 metres.
3. If possible do not create ring circuits so as to prevent undesirable signals and overloads.
4. Keep a distance of at least 4 mm between the individually insulated cables of the bus line and those of
the electric line.
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