Diagnosis Levels; Behavior In Degraded Mode - Siemens FDM243H Technical Manual

3 Structure and function
Function
3.3.5
3.3.6
20
Building Technologies
Fire Safety

Diagnosis levels

The manual call point monitors its operation largely autonomously.
The following diagnosis levels are derived from the different control measurements:
Normal, no fault is present
Replacement necessary
Fault present
When an error occurs which impairs the correct functionality of the device, a fault
message is reported to the control panel.

Behavior in degraded mode

Applicable for the FDnet/C-NET:
When the main processor of the fire control panel fails, the control panel is in
degraded mode operation. Depending on the control panel type, the fire control
panel can continue to perform the most important alarming and signaling functions
in degraded mode operation.
Behavior of control panels that support degraded mode operation:
Alarming is still ensured in degraded mode operation. However, in degraded mode
only collective alarming is possible. This means that in the event of an alarm, it is
possible to identify the FDnet/C-NET detector line but not the exact location of the
detector triggering the alarm.
Degraded mode operation on the FDnet/C-NET is not supported in the same way
by all control panels. The information in the 'List of compatibility' and in the
corresponding control panel documentation must be taken into account during
project planning.
A6V10374021_c_en_--
2014-07-01