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9.2.2.2 Operation modes of the detection tree elements
'Area'
● 'Manned operation'
In 'Manned operation' operation mode, operating personnel are present and
can investigate the fire location. The detectors are set to normal sensitivity, in
accordance with the selected ↑ parameter set.
● 'Unmanned operation'
In the 'Unmanned operation' operation mode, there are no operating personnel
present to investigate the fire location. The sensitivity level of the detectors or
their parameter sets are typically increased by switching to 'Unmanned
operation' operation mode.
The settings for the 'Manned operation'/'Unmanned operation' operation modes are
defined in the chapter Alarm Verification Concept (AVC).
'Zone'
● Switched on (normal operation)
Danger levels are evaluated and 'ALARMS' produced in normal operation. The
detectors have a normal sensitivity level, in accordance with the selected
parameter set.
● Switched off
If a 'Zone' is switched off, the channels assigned to the 'Zone' are isolated. No
signals are evaluated, neither danger levels nor 'Faults'.
There are two isolation functions:
– Isolation without time limits
– Isolation with time limits
● ' --Renovation mode'
This operation mode is not assigned a function.
● 'Detector test'
In the 'Detector test' operation mode, detectors can be actuated for test
purposes. When a detector is triggered, a test activation message is generated.
↑ Alarm devices or controls are not activated.
The following devices are activated:
– Internal alarm indicators
– ↑ External alarm indicators in accordance with the configuration
– Base sounders if they are in the base of the activated detector
During testing the detectors must react quickly so that the holding times are
short. During the 'Detector test', the detectors are switched to increased
sensitivity with the 'Test' ↑ parameter set for this purpose.
After terminating the 'Detector test' operation mode, the detectors and 'Zones'
are reset to the condition they were in before the 'Detector test'.
● 'Installation test'
An 'Installation test' can be performed during normal operation. The alarm
devices and controls are activated.
In the test the detectors must react quickly so that the holding times are short.
During the 'Installation test', the detectors are switched to increased sensitivity
with the 'Test' parameter set for this purpose.
After terminating the 'Installation test' operation mode, the detectors and
'Zones' are reset to the condition they were in before the 'Installation test'
operation mode.
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