Danger Levels - Siemens FDOOT221 Technical Manual
Automatic fire detectors
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- Technical manual (130 pages) ,
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- Manualline (24 pages)
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3.5.2 Danger levels
Building Technologies
Fire Safety
The detector's signal processing efficiently distinguishes between fire events and
deceptive phenomena. The basis for reaching a danger level is not only given by
measured values exceeding a "response threshold"; moreover, the smoke density
progression is observed over a longer period of time and assessed by the
algorithms.
Fire detectors can transmit the following danger levels* to the control panel:
Danger level
Meaning
0
No danger
1
Check the situation
2
Warning
3
Alarm
* On a SIGMALOOP detector line, it is the sensor values, not the danger levels,
that are transmitted to the control panel.
●
The evaluation of the danger level and the decisions to be taken (e.g. activation
of remote transmission) are configured in the control panel.
●
On a collective detector line, only danger levels 0 and 3 can be transmitted to
the control panel.
2BStructure and function
20BFunction
Comment
Normal condition
A different parameter set should
potentially be selected (inappropriate
application)
Possible danger
Fire
3
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2015-11-04
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