Degraded Mode In Fdnet - Siemens FDCW221 Technical Manual

Function
5.3

Degraded mode in FDnet

18
Building Technologies
Fire Safety & Security Systems
When the main processor of the fire control panel fails, the control panel is in
degraded mode. Depending on the control panel type, the fire control panel can
continue to perform the most important alarming and signalling functions in
degraded mode.
Behaviour in degraded mode on control panels supporting degraded operation
Alarming is still ensured in degraded mode. However, in degraded mode only
collective alarming is possible. This means that in case of alarm, it is possible to
identify the detector line in account but not the exact location of the detector
triggering alarm.
The degraded operation on the FDnet is not equally supported by all control
panels. During project planning, the information in the document 'List of
compatibility' (doc. no. 008331) and the control panel documentation in account is
mandatory.
009865_b_en_--.doc
11.2007