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2015-11-04
3.5.3 Diagnosis levels
The point detector monitors its operation largely autonomously. The signals of all
sensors are permanently monitored.
The following components in particular should be monitored for correct
functionality:
● Temperature sensors
● Light emitters
● Light receivers
Signal processing takes account of the monitoring results and adapts its behavior
accordingly.
The following diagnosis levels are derived from the different control measurements:
● Normal
● Observe information
● Replacement recommended
● Replacement necessary
● Fault
You will find details in the following table.
When an error occurs which impairs the correct functionality of the device, a fault
message is reported to the control panel.
To correct the cause of the fault, additional information is available in the device.
The additional information can be displayed using e.g. the detector exchanger and
tester FDUD292 or the intelligent detector tester FDUD293.
You will find more information in documents 007227 and 009718.
See 'Applicable documents [➙ 9]' chapter.
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