Alarm Signalling - Gira 5142 00 Product Documentation

4.2.4.1.16 Alarm signalling

Alarm signal display
The push button sensor permits signalling of a alarm which might be, for instance, a burglar or a
fire alarm from a KNX/EIB central alarm unit. An alarm is signalled by all status LEDs, the
labelling field illumination and the LCD backlighting of the push button sensor flashing
synchronously. This alarm indication can be separately enabled with the parameter "Alarm
message indication" on parameter page "Alarm messages" so that it can be used.
When alarm signalling is enabled, the ETS displays the communication object "Alarm signalling"
and further alarm function parameters.
The alarm signalling object is used as an input for activating or deactivating alarm signal
displaying. The polarity of the object can be selected. When the object value corresponds to the
"Alarm" condition, all status LEDs, the labelling field illumination and the LCD backlighting are
always flashing with a frequency of approx. 2 Hz. If there is an alarm, the behaviour of the
labelling field illumination as configured in the ETS, the status LED and the LCD backlighting for
normal operation have no significance. The LEDs adopt their originally configured behaviour
only after the alarm signalling function has been deactivated. Changes of the state of the LEDs
during an alarm - if they are controlled by separate LED objects or if they signal push button
functions - are internally stored and recovered at the end of the alarm.
i Regardless of the colour configuration of the status LED in normal operation and with a
superposed function, the LEDs always flash red when a display alarm message is active.
i When a display alarm message is active the status LEDs, the labelling field illumination and
the LCD backlighting of the push button sensor always flash with the regular brightness.
The push button sensor automatically deactivates the night reduction for the duration of the
display alarm message, and tracks it again, when the alarm message is switched off and
the object for the night reduction is still "1"-active.
Apart from the possibility of deactivating an alarm signal via the alarm object, it can also be
deactivated locally by a button-press on the push button sensor itself. The "Reset alarm
signalling by a button-press?" parameter defines the button response during an alarm...
- If this parameter is set to "Yes", active alarm signal displaying can be deactivated by a
button-press on the push button sensor. This button-press does not cause the configured
function of the pressed button to be executed. Only after then next button-press will the
configuration of the button be evaluated and a telegram be transmitted to the bus, if
applicable.
- If "No" has been selected, alarm signalling can only be deactivated via the alarm signalling
object. A button-press will always directly execute the configured button function.
If alarm signalling can be deactivated by a button-press, the parameter "Acknowledge alarm
signalling by" defines whether an additional alarm acknowledge telegram is to be transmitted to
the bus via the separate object "Alarm signalling acknowledge" after triggering by this button-
press.
Such an acknowledge telegram can, for instance, be sent via a 'listening' group address to the
"Alarm signalling" objects of other push button sensors in order to reset the alarm status there
as well. Attention must be paid during resetting of an alarm to the selectable polarity of the
acknowledge object.
i Notes on the polarity of the alarm object: If the setting is "Alarm when OFF and alarm reset
when ON", the alarm object must be actively written by the bus with "0" to activate the
alarm after a reset or after programming with the ETS.
Order No. 5142 00
Order No. 5145 00
Software "Push button sensor 3 plus"
Functional description
Page 109 of 281