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Structure and function
Function
3
34 | 94
Building Technologies
A6V10209291_h_en_--
Fire Safety
2016-03-03
3.3.4 Line separator
All FDnet devices are equipped with a line separator.
The FDnet device is equipped with electronic switches which isolate the defective
part in case of a short-circuit on the detector line. The rest of the detector line
remains serviceable.
On a loop line, all FDnet devices remain fully functional after a single short-circuit.
3.3.5 Internal alarm indicator in the case of ES <50
Information about the product version of your device can be found in the 'Product
version ES [ 25]' chapter.
The detector has an internal alarm indicator. The internal alarm indicator shows the
detector's operating condition.
Operating condition Flashing mode of alarm indicator
Normal
Al off
Alarm
AI flashes every second
Test mode
Al off
Alarm in test mode AI flashes every second
The flashing behavior of the point detectors in the case of ES 50 is described in
the 'Extended flashing behavior of alarm indicators in the case of ES 50 [ 35]'
chapter.
3.3.6 External alarm indicator in the case of ES <50
External alarm indicators (EAI) connected to the point detector display the following
behavior:
Operating condition
Flashing mode of alarm indicator
Alarm/Active
EAI flashes every second
Alarm in test mode
EAI flashes every second
The flashing behavior of the external alarm indicators for higher product versions
is described in the 'Extended flashing behavior of alarm indicators in the case of
ES 50 [ 35]' chapter.