Technical / Programming Manual
FT128 Rev 2.2
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Each analogue detector in the system can be programmed (in EBLWin) to delayed fire
alarm activation, “Delayed” alarm check box in the detector properties must be ticked
. (Heat detectors should not and manual call points must not have delayed fire
alarm activation). The delay time can be set (in EBLWin, System Properties) to 0-255
seconds. In general applications, it is not recommended to use this function however if it is
necessary to be used, it has to be less than 30 seconds.
Function for an analogue smoke detector:
An alarm point has to be in "fire alarm state"
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for the duration of the delay time, in order
to activate a fire alarm in the CIE. If an alarm point restores back to "normal state" during
the delay time, the delay time will reset and starts again when the alarm point activates "fire
alarm state" again.
Programmable output can be activated using specific trigger type during the delay of
specific alarm point e.g. 3379 sounder base.
A delayed or AVF alarm is indicated in the control unit (CIE) as follows:
The buzzer sounds similar to pre-warning (0.8 / 5 sec.).
Information in the CIE LCD, e.g. for a detector:
Delayed alarm detector ZZ/AA
Function: for conventional Zone Line Inputs
The “Delayed” check box for addressable multipurpose I/O unit (3361) Zone Line Input 0
(Z) and 8 zones expansion board (4580) input is called Alarm Verification Facility “AVF”, if
required, check box must be ticked and functions will be as explained in section
14.10 below.
14.9.2 Specific time delay application
In this specific application of the “Delayed” alarm function, the alarm activation type for an
output unit (3379) must be set (in EBLWin) to “DelayedAlarmZoneAddress” (or zone). In
this case, when the alarm point activates an alarm, the output unit 3379 will sound during
the time delay period without signalling alarm to the CIE. If the alarm point still in alarm
after the time delay elapsed, the CIE will be in full alarm condition. The delay for this
application can be selected for up to 255 seconds.
The function is identical to the function of the “AAF” without the wall mounted Module
“AAM”.
Application Example:
A typical application for the delayed alarm function would be a residential accommodation
where false alarms may cause a brigade call. A sounder base 3379 mounted inside the
unit will activate upon receiving a delayed alarm from a smoke detector for the delay period
configured in the system properties (0-255 sec). If the smoke is not cleared from the smoke
detector during the time delay, the control panel will go to full alarm condition. If the smoke
clears up within the delay time, the alarm will reset, 3379 will be silenced and the system
restores to the normal condition.
Several control expressions are available to cover any possible configuration:
DelayedAlarmZoneAddress (Zone, Address), true when a specific zone / address
is in delayed alarm state.
DelayedAlarmZone (Zone), true when a specific zone or any detector in a certain
zone is in delayed alarm state.
GeneralDelayedAlarm, true when any zone or zone/address is in delayed alarm
state.
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