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Structure and function
Function
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Building Technologies
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Fire Safety
2018-06-28
3.3.1 Line separator
All FDnet/C-NET devices are equipped with a line separator.
The FDnet/C-NET 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/C-NET devices remain fully functional after a single short-
circuit.
3.3.2 Selftest
Flame detector FDF241-9 regularly carries out a selftest. If a fault is detected, it
transmits a message to the control panel.
See also
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