Internal Alarm Indicator - Siemens FDOOT221 Technical Manual

3.5.6 Internal alarm indicator

Building Technologies
Fire Safety
The point detectors have an internal alarm indicator. The internal alarm indicator
shows the operating condition of the point detector in FDnet according to the table
below:
Operating condition
Normal
Test mode
Alarm
Fault
The extended flashing behavior of the point detectors FDOOT241-A and
FDOOT241-Ax when ES ≥50 is described in the 'Extended flashing behavior of
the alarm indicators [➙ 40]' chapter.
The following displays are possible when operating the FDOOT241-A9 point
detector in collective mode:
Operating condition
Normal
Test mode
Alarm
Fault
Only during the first three minutes of operation after the detector line being started up or reset.
1
The following displays are possible when operating the FDOOT241-A3 point
detector in AnalogPLUS mode and the FDOOT241-A4 in SIGMALOOP mode:
Operating condition
Normal
Alarm
The following display is possible when operating the FDOOT241-A5 point detector
in interactive mode:
Operating condition
Normal
Test mode
Alarm
Fault
Flashing mode of the IAI
IAI flashes weakly every 4 seconds
IAI flashes weakly every 0.5 seconds
IAI lights up every second
IAI off
Flashing mode of alarm indicator
IAI off
IAI flashes weakly every 0.5 seconds
IAI flashes every second
IAI flashes twice every 4 seconds
Flashing mode of alarm indicator
IAI flashes weakly approx. every 4 seconds
IAI lights up approx. every second
Flashing mode of alarm indicator
IAI flashes weakly approx. every 4 seconds
IAI flashes weakly approx. every 1.5 seconds
IAI lights up approx. every 2 seconds
IAI off
2BStructure and function
20BFunction
1
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2015-11-04
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