Line Separator; Internal Alarm Indicator In The Case Of Es <10 - Siemens OH720 Technical Manual

3.3.4 Line separator

3.3.5 Internal alarm indicator in the case of ES <10
Building Technologies
Fire Safety
All C-NET devices are equipped with a line separator.
The C-NET device is equipped with electronic switches which isolate the defective
part in case of a short-circuit on the C-NET detector line. The rest of the detector
line remains serviceable. On a loop line all C-NET devices remain fully functional
after a simple error.
The point detectors have an internal alarm indicator. The internal alarm indicator
shows the point detector's operating status:
Operating condition
Normal
Alarm
Test mode
Alarm in test mode
The flashing behavior of the point detectors in the case of ES ≥10 is described in
the 'Extended flashing behavior of alarm indicators in the case of ES ≥10 [➙ 22]'
chapter.
Information about the product version of your device can be found in the 'Product
version ES [➙ 16]' chapter.
2BStructure and function
Flashing mode of the IAI
IAI off
IAI lights up every second
IAI off
IAI lights up every second
3
18BFunction
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2015-05-04