Tecnoalarm Tecnofire TFA2-596, Installation Manual

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TFA2-596 - TFA4-1192
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8-4 - Monitored system mode
Warning: the monitored system mode may only be used if the control panel is under the direct control of authorized personnel.
It is only available if its use was enabled during setup.
The activation and deactivation of the monitored system mode requires a level 2 code. Its activation is indicated by the relevant
LED on the control panel which turns on. At the same time, the repeater panel displays the icon that indicates the monitored
system mode.
With the operation mode active, the alarms generated by the devices are reported by the control panel as prealarm.
However, if the alarm is generated by a manual call point, an alarm is reported immediately.
The monitored system mode has no effect on the operation of the technical zones.
Access period
The activation of the monitored system mode can be subjected to an access period. In this case, the operator can activate the
operating mode only during the set access period. At the end of the access period, the operating mode is automatically deactivated.
Operating logic
On generation of the prealarm, the control panel activates the alarm delay. If the prealarm is not acknowledged by the operator
within the alarm delay, the prealarm is automatically converted into an alarm. If the prealarm is acknowledged by the operator,
the validation delay activates. If a reset is performed within this delay, the prealarm state stops, whereas if no reset is performed,
the prealarm is converted into an alarm.
If the prealarm turns out to be a false alarm, the operator can perform the reset from the control panel or from any device that
manages the reset function.
If the alarm proves to be real, the staff can wait for the expiry of the validation delay or can generate the alarm either by activating
the evacuation (using a level 2 code) or via a manual call point.
Prealarm
acknowledged
?
Alarm
delay
expired
?
Validation
delay
expired
?
Reset
?
Yes
No
No
No
No
Yes
Yes
Yes
Alarm
delay
Validation
delay
Prealarm state
stops
Zone switches
to Alarm
Zone switches
to Alarm
Prealarm No alarm
No alarm
Alarm
Alarm
MONITORED SYSTEM MODE - ALARM TRIGGERING
The zone is in stand-by state
With one device
in alarm or prealarm state
the zone switches to prealarm
If the prealarm is not acknowledged after the expiry of the alarm delay,
the alarm automatically activates.
If the prealarm is acknowledged but not reset within the validation delay,
the alarm automatically activates.