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7.2.6
Instructions on the calibration of the internal light controller
To commission the presence detector with a constant light function you have various
parameters available in the ETS. These parameters allow numerous options for setting, in order
to adapt the working mode of the device to individual requirements and circumstances.
Therefore, the type of furniture, floor coverings or sources of interference in the room is of
significance. The value to be set in a room with dark furniture will be less than in a room with a
light-coloured floor and light-coloured furniture. Also the effect of the size of the interference,
such as heat sources or short-term changes in brightness, such as passing clouds, can be
taken into consideration.
For an optimum function of the constant light control a calibration of the sensor for the
brightness detection is required. The following needs to be observed:
The detection range of the sensor for brightness detection (see the following graphics; does
■
not apply to the Busch-Watchdog Sky KNX).
Reflection characteristics of the ground material within the detection range.
■
Fig. 20: Detection range of the sensor for brightness detection (does not apply to the Busch-Watchdog Sky KNX).
The sensor is calibrated via the respective software application. Observe the following
applicable explanations.
There are two options for adjusting the brightness via the brightness detection application (see
parameter "Correcting process fo internal brightness"):
KNX Technical Manual 2CKA001473B8667 │ 06.02.2017
2,5 m
0,8 m
Commissioning
│57
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