Diagnosis Levels - Siemens FDL241-9 Technical Manual

Structure and function
3
Function
3.3.5
Information displayed on the
detector exchanger and tester
'no deviation'
'maybe excha.'
1
'In 1 problem 3'
1
'In 1 trouble 1'
1
'In 1 trouble 2'
1
26
Building Technologies
Fire Safety

Diagnosis levels

For the most part, the linear smoke detector monitors its functionality
autonomously.
The following diagnosis levels are derived from the different control measurements:
Normal

Observe information

Fault

For details, see table below.
When a fatal error (one which impairs the detector's function) occurs, a fault
message is signaled. To correct the cause of the fault, additional information is
available in the detector. This can be displayed by the detector exchanger and
tester FDUD292 or the intelligent detector tester FDUD293, for example.
Meaning
Normal, no fault is present
The detector is fully functional
Observe information
Compensation value is too high or too low
Detector is fully functional, reflection or dirt
cannot however be compensated for
Observe information
Repeated ray interruption
Fault
Detection is no longer ensured
Signal interruption: Signal <10 % of the
compensation value
Fault
Detection is no longer ensured
Distance interruption: distance measuring
less than 40 % of the detection distance
during initialization
Measures
None
In the case of dirt, clean the detector

and reflector and re-initialize them
In the case of reflection, remove or

cover reflecting objects
Prevent interruption or position detector in
another place
Remove obstacle

Clean the detector and reflector and re-

initialize them
Remove obstacle
007016_i_en_--
2012-09-07