Order No. 2104 ..
Figure 12: Pressure increase depending on the height of location
Behaviour in case of sensor faults
The device monitors the integrated, digital, combination sensors cyclically. If communication is
permanently impaired (e.g. due to a sensor or device fault), the corresponding alarm object
"sensor fault" is written with the value "ON" for the error message and a telegram is transmitted
to the bus.
In the case of a fault, the CO
2
sensor is deactivated permanently by the device for safety
reasons. In case of an impaired and deactivated sensor, the value "0" is output as measured
value.
i
After a device reset (ETS programming operation or bus voltage return), the CO
2
sensor is
restarted again. If there is no fault anymore, the device resumes measuring the CO
2
concentration of the room air and updates the object "Sensor fault" with "OFF". Should the
sensor still be impaired after a reset, the device deactivates the sensor and transmits the
value "ON" to the bus via the alarm object "Sensor fault".
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Software "KNX CO2 sensor"
Functional description
