Siemens FC7xx Operation Manual page 135

9.2.2.3 Functions of the detection tree elements
Building Technologies
Fire Safety
'Channel'
● Switched on (normal operation)
In the normal operation, the danger levels of the detector as well as any 'Faults'
are transmitted to the 'Zone' for evaluation.
● Switched off
If a 'Channel' is switched off, no signals are forwarded to the 'Zone', neither
danger levels nor 'Faults'.
'Area': Switching the operating mode
● The 'Unmanned operation' operation mode is manually switched to 'Manned
operation'. Switching is not possible when 'ALARMS' have occurred and need
to be dealt with.
● The 'Manned operation' operation mode is automatically or manually
(configurable) switched to 'Unmanned operation'. Four time settings can be
configured for this, regardless of the day of the week:
– The first time setting is for automatic changeover.
– The second, third and fourth time setting is for safety reasons, in case
somebody switches to 'Manned operation' after the expiry of the first,
second or third automatic changeover.
● Blocking switchover
– If an 'Area' has occurred in the 'ALARM' and is waiting for treatment, the
switchover function from 'Manned operation' to 'Unmanned operation' is
blocked.
– It is still possible to switch from 'Unmanned operation' to 'Manned
operation'.
● Switching functions on and ↑ off
– All functions available for the 'Zones' are also available as collective
functions at area level.
Examples:
– Switching all automatic 'Zones' on and off.
– Switching all manual 'Zones' on and off.
● 'Poll alarm counter'
– The alarm counter counts the number of alarm states of the 'Area'.
– The alarm state is the state from the first 'ALARM' to the successful reset.
↑ 'Section': Switching the 'Zones' on and ↑ off
● All 'Zones' of the same kind (automatic/manual) can be switched off and on
within the section. 'Zones' with automatic fire detectors and 'Zones' with manual
call points are treated differently.
System description
9
Topology
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2015-12-15