41
ABB i-bus
®
EIB / KNX
Planning and application
4.2
Planning example:
“Humidity sensor”
The air conditioning and heating in a laboratory is to be controlled in
relation to the relative humidity. If the value falls below 20%, the air
conditioning should be switched off and the heating should be switched on.
If the value rises above 75%, the air conditioning should be switched on and
the heating should be switched off. The minimum duration of the underflow
or overrange is a maximum of 30 seconds.
The relative humidity should not be evaluated below 10% and over 90%.
Humidity sensor:
Signal output:
0 – 1000 ohm
Measuring range:
0...100%
Measurement curve:
Linear
Threshold 1:
Air conditioning
Threshold 2:
Heating
Connection to channel A.