Page 183 - Advanced Course

KNX ADVANCED COURSE

Figure 20: Parameter of a controller module

It is then possible to check whether the curve-specific parameters of the controller (if
available) fulfil the requirements of the customer. In our example, that would be

the behaviour after bus voltage recovery; the open-loop control would be switched on
here
the minimum On time: if the external brightness should vary within the limit range so
that the control value for the dimmer can fluctuate around the switching point, then the
light remains switched on for at least 5 minutes
the hysteresis limit values shown mean in our example that the light is only switched
off at approx. 9000 lux (since there is then an underrange in the control value of 20)
and switched on again at approx. 600 lux because the control value of 30 has been
achieved again.

Home and Building Management Systems KNX Association
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