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Functionality
Press and hold the yellow button to initiate an external alarm call.
Once activated the yellow LED will turn on.
Once the external call has been placed an additional local intercom
connection will be enabled to allow for communication with all
connected audio modules and the external receiver. The local intercom
connection will automatically be disabled when the external call is
hung up.
Once external communication is established the green LED will light up.
Press the blue button to enable or disable a local intercom to the machine room
connection only. During this call the green LED will flash slowly and once the
communication is established it will stay solid for the duration of the call.
Press and hold both the yellow and blue button at the same time to enable the End
of Alarm signal and the device will revert to standby mode. Note this does not end the
call, it will only end the alarm function.
Notes:
End of Alarm (EOA): This indicates that the emergency elevator trapping rescue is
complete, and the alarm can be turned off or reset. The alarm siren may be switched
off by an engineer by pressing both buttons simultaneously, as described below.
Alarm Filter: The cabin alarm button will not activate unless the elevator is in a fault
condition or the doors are closed, this filter is mostly used to prevent nuisance calls.
Intercom alarm: This allows 2-way voice communication between the top of car and
the machine room handset connected to the DCP.
Cabin alarm button: this is the main alarm button in the car operating panel which
needs a voltage free contact from the alarm push to trigger an emergency alarm call.
LED Indicators / Pictograms
The following table describes the operation of the two LEDs (green and yellow) on the
DAU:
Yellow LED
Flashing
*If the last alarm call has not been completed or the Digital Communication Platform is not
available for voice call, the two indicators light up alternately until the problem is fixed and the
device conducts a proper test call.
Green LED
Off
Off
On
Off
Off
On
Flashing
Function
End of alarm or Device on standby
Alarm started, communication is
established OR End of Alarm
Audio module communication
established
Error in last test *
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