Appendix B: Delayed Alarm Reset (DAR)
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A6V10421795_en--_k
r
Self-reset button installed and
connected to the input or I/O
module
●
[Y]: The button is pressed
before Ta expires.
●
[N]: The button is not pressed
before Ta expires.
p
Panel state
●
[Y]: Confirmation time Tb expires and additional
alarm event is sensed. If another alarm verification
attempt proceeds during 'Manned operation'
operation mode, local alarming is activated again.
If all attempts (max. three alarm verification
attempts) have proceeded, AVC procedure is
involved. See
Appendix A: Alarm Verification
●
[N]: Confirmation time Tb expires and no more
alarm event is sensed. The panel enters the
normal operation mode.
Ta Time for alarm delay (max. 180
seconds)
Tb Time for alarm delay confirmation
(max. 180 seconds)
Note:
The graphic above also works in the period of T2 if operating personnel
acknowledges alarm event on the panel. If T1 or sum of T1 and T2 is shorter than
Ta, Ta shall be shortened. Otherwise, AVC enables the global alarm state.
In order for the DAR function to take effect in case of false alarms or minor
incidents, the following preconditions must be fulfilled:
● 'Manned' operation mode is active (the 'Manned/Unmanned' LED before
is ON on the panel).
● At least an input or input/output module (any connectable input module but
FDCI723), a detector and an alarming device are connected to a
line in the occupied space and configured in 'FC360 Panel Configurator' as
follows:
– 'Element Type' of the input channel of the module is set to 'Auto alarm
Dev.'.
– 'Usage' of the input channel of the module is set to 'Trigger isolate'.
– The AVC function is set to ON for the detector, and T1 is greater than Ta.
– 'Device Nr.' is the same for the input channel and the detector. Normally
'Device Nr.' is unique for each device, but it has to be the same for different
devices in order for the DAR function to take effect. See
document
for more information about device numbers.
– Control logics are configured between causes (input channels, detectors
and so on) and control outputs.
● An additional self-reset button is installed and connected to the input or
input/output module so that occupants can push the button to isolate devices
and deactivate local alarming in the occupied space in case of false alarms or
minor incidents.
Alarm verification proceeds as follows if the DAR function takes effect:
● An alarm event activates local alarming and starts the time 'Time for delay
alarm (Second)' for alarm cause check.
● Occupants identify it's a false alarm or minor incident on site and then push the
self-reset button before the time 'Time for delay alarm (Second)' expires.
– Devices in the occupied space are isolated.
– Local alarming is deactivated.
– The buzzer on the panel is silenced.
– 'Time for delay alarm (Second)' stops counting down.
– The time to confirm the alarm delay (Confirm for delay alarm (Second))
begins to count down.
Note:
Pushing the self-reset button after the expiry of 'Time for delay alarm
(Second)' doesn't isolate devices or silence local alarming.
● After the confirmation time expires, the detection device resumes working. If it
senses no alarm event, the panel returns to normal state. Otherwise, another
attempt of alarm verification proceeds. At most three attempts are allowed. You
can configure the attempt number ('Additional delay alarm') together with 'Time
for delay alarm (Second)' and 'Confirm for delay alarm (Second)' in task card
'Other settings' in 'FC360 Panel Configurator'.
Summary of Contents for FC361 Series
Page 6: ......
