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SETUP & PROGRAMMING
DEPENDENCY MODES (FALSE ALARM MANAGEMENT)
Dependency modes are features described in EN54-2 for the processing of confirmation alarms. It is a
requirement by some monitoring stations and local fire authoities in order to reduce the possibility of false
alarms.
The panel has 3 dependency mode options, A, B & C. Only one type can be applied to the panel but any
or all zones can be independently set for dependency mode.
Dependency mode, if assigned to a zone, is set to type A by default.
Dependency 'A' will apply the following sequence:
1.
The first detector alarm is inhibited.
2.
The panel resets and re-checks the inhibited zone within 15-30 seconds.
3.
If an alarm is detected then the panel activates a full fire condition.
4.
If no alarm is detected, the panel stays in an alert condition for 30 minutes. Any new alarm from
the same zone within this time activates a full fire condition.
5.
After 30 minutes or if RESET, the panel reverts to step 1.
Note: 220Ω 'Evacuate' call points should be used on such zones to provide an instant un-delayed alarm.
A 470Ω call point will be included in the dependency delay sequence.
Dependency 'B' will apply the following sequence:
1.
The first detector alarm will indicate at the control panel but not activate the sounders.
2.
The panel resets and re-checks the inhibited zone within 1 - 4 minutes (programmable, see code
2-1-3-4)
.
1
3.
If an alarm is detected then the panel activates a full fire condition.
4.
If no alarm is detected, the panel stays in an alert condition for 5 - 30 minutes (programmable,
see code 2-1-3-4)
full fire condition.
5.
After the time set above or if RESET, the panel reverts to step 1.
Note: 220Ω 'Evacuate' call points should be used on such zones to provide an instant un-delayed alarm.
A 470Ω call point will be included in the dependency delay sequence.
Dependency 'C' will apply the following sequence:
1.
The first detector or 470Ω call point alarm will indicate at the control panel but not activate the
sounders.
2.
The panel will not activate a full fire condition unless a second detector or 470Ω call point is
activated in the same or any other zone.
Note: A 220Ω 'Evacuate' call point can be used on such zones to provide an instant un-delayed alarm.
Esento Marine 8-12 Installation, Commissioning & Operating Manual
. Any new alarm from the same or a different zone within this time activates a
2
Approved Document Ref: UI-ESEN12MAR-01 Issue 8.0
32
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