Technical / Programming Manual
FT128 Rev 2.2
109
Function:
Two or more zones in the same group have to be in "fire alarm state"
at the same
time to activate fire alarm in the control unit. When only one of the zones is in "fire alarm
state" it is indicated in the control unit (CIE) as follows:
The buzzer sounds same as pre-warning (0.8 / 5 sec.).
On the CIE LCD, the following information is shown:
Co-incidence alarm zone ZZ
Programmable outputs can be activated by trigger condition "Two Zone Dependent Fire
Alarm" but no other outputs will be activated.
A co-incidence alarm can be manually reset ("Reset" button on the front) and will be
automatically reset 5 min. after it is no longer in "fire alarm state" (i.e. below the fire alarm
level).
14.8.2 2-Address (-Unit) Dependence
Each analogue detector, addressable multipurpose I/O unit (3361) monitored Input 0 (Z)
and 8 zones expansion board (4580) input, can be programmed for 2-unit dependent fire
alarm activation. (Heat detectors should not and manual call points must not be 2-unit
dependent).
Function:
Two or more units in the same zone have to be in "fire alarm state"
130
at the same time to
activate a fire alarm in the control unit. When only one unit is in "fire alarm state" it is
indicated in the control unit (CIE) as follows:
The buzzer sounds same as pre-warning (0.8 / 5 sec.).
In the CIE LCD the following information is shown:
Co-incidence alarm detector ZZ/AA
Programmable outputs can be activated by the trigger condition "Two Address Dependent
Fire Alarm" but no other outputs will be activated.
14.8.3 Reset of 2-Zone / 2-Address Dependence (Co-Incidence Alarm)
The unit / zone having activated a Co-incidence alarm will be latched in this status for at
least 5 minutes and then automatically reset. During these 5 minutes the push button
"Reset", on the CIE front / FBP, can be used to manually reset the Co-incidence alarm.
If, during these 5 minutes, at least one more unit (in the zone) or at least one more zone
(in the group) comes into "fire alarm state", the Co-incidence alarm ends and normal fire
alarms will be activated in the CIE
14.9 Delayed Alarm
14.9.1 General time delay application
In some premises delayed fire alarm activation can be used to avoid nuisance alarms. The
delay time will be added at the end when a fire alarm normally would have been activated
in the CIE. This function is a violation to the AS7240.2 standard.
The delayed alarm function in the properties of analogue smoke detectors is called
“Delayed” while in conventional Zone Line Input properties called “AVF”. The functionality
of the delayed alarm in both types are different as explained below.
Fire alarm state is when a fire alarm normally would have been activated in the CIE
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