Master Control - Berker

Subsequent alarm
If an additional detector of an armed security area triggers after a prior alarm, then a subsequent
alarm is activated. In so doing, the internal configured siren is again triggered and, if
necessary, switched on again. A detector which previously triggered an alarm cannot trigger a
second subsequent alarm.
A subsequent alarm is always activated without delay, even with a planned alarm delay.
An subsequent alarm and the detector causing it are logged in the event memory of the panel
(see chapter 4.2.4.12.6. Event memory). In addition, the signalling system uses the
14 byte object "Alarm detector text" to display the detector text configured in the ETS plug-in of
the detector which triggered the alarm.
Alarm acknowledgement / "Unarmed after alarm"
Each alarm must be acknowledged directly on the panel. Without alarm acknowledgement, it is
not possible to switch to "Unarmed" status and thus additional arming. The system operator can
acknowledge an alarm in the status "Unarmed after alarm".
Primarily, there are two methods of acknowledging an alarm...
- Separate unarming + acknowledgement:
An active alarm (internal siren + "Alarm" object switched on) can - as described above - be
deactivated by unarming. The system switches the internal siren off if it has not already
been switched off automatically, transmits a "0" telegram to the bus via the "Alarm" object
and an unarmed acknowledgement to the bus and switches to the status "Unarmed after
alarm". The visual alarm (for external alarming) remains switched on.
In the "Unarmed after alarm" status, the operator can the inspect the event memory directly
on the panel to see which detector triggered the alarm at which time. Usually, the alarm
can then be confirmed by pressing the "Acknowledge" button on the panel and then reset
completely. The system then switches the visual signal off (for external alarms) and then
switches to the "Unarmed" status. In this case, there is no additional unarming acknowledgement.
The panel transmits the text "No alarm" to the bus via the 14 byte object "Alarm
detector text".
In the "Unarmed after alarm" status, the piezo buzzer of the panel is controlled in order to
alert the user to go to the panel and acknowledge the alarm.
- Unarming by acknowledgement:
An alarm can also be acknowledged directly without separate unarming and thus reset. For
example, such behaviour is wise when the internal siren set for a specific time after an
alarm has already turned quiet, i.e. need not be turned offer, or the system is operated directly
on the panel. For this, the "Acknowledge" button can be pressed on the signalling side
of the panel in the "Alarm" status.
With such operation, the signalling system completely deactivates the alarm and acknowledges
it at the same time. Deactivating the alarm switches off the visual alarm (for external
alarms) and the internal siren, if this has not already been switched off automatically. In addition,
the system transmits a "0" telegram via the "Alarm" object and the text "No alarm" to
the bus via the 14 byte object "Alarm detector text". The system then immediately switches
to the status "Unarmed" without any separate unarming acknowledgement. This type of operation
does not set the status "Unarmed after alarm".
Before or after the "Acknowledge" button is pressed, the system operator can the inspect
the event memory directly on the panel to see which detector triggered the alarm at which
time.
i After an alarm has been acknowledged, the system automatically switches to the "Fault"
status, if, for example, the sabotage input was the detector triggering the alarm. This subsequent
fault must then be acknowledged separately on the panel. The cause of the fault
must have been eliminated for a fault message to be acknowledged (see chapter
4.2.4.12.5. Fault).
Order-No. 7574 00 1X
Software "...590101"
Functional description
Page 123 of 222