Behaviour On Voltage Failure - ABB DG/S 1.1 Product Manual

®
ABB i-bus EIB / KNX
4.11 Behaviour on voltage
failure
© 2006 ABB STOTZ-KONTAKT GmbH
Project design and programming
Failure of the operating voltage
The failure of the operating voltage on the DALI-Gateway is indicated by the
green operating LED on the front of the device being extinguished. The
yellow DALI fault LED also remains switched off as no operating voltage is
available for triggering the LED.
The DALI-Gateway can also be programmed and parameterised without
operating voltage via the EIB / KNX connection. Communication with the
connected DALI devices is not possible. Incoming EIB telegrams are stored
intermediately in the objects and the corresponding action is implemented
after the operating voltage recovers.
The communication object "Telegr. Fault 230 VAC" can be activated in the
Status parameter window. Depending on the parameterisation, the fault in
the operating voltage is routed automatically via this object or only via a read
request.
The 230 VAC fault refers to the operating voltage of the DALI-
Gateway in general and thus also applies to a DC operating
voltage.
By means of the general communication object "Fault Acknowledgement",
the acknowledgement of the fault signals can be parameterised, i.e. both the
reset of the 230 VAC fault signal and the ballast, lamp and DALI fault signals
(DALI short circuit) of the channels are possible.
The failure of the operating voltage means that the DALI power supply in the
DALI-Gateway is no longer functioning. The communication to the
connected DALI device is interrupted. In the event of a failure in the
operating voltage in test mode, the mode is interrupted and must be
restarted after recovery of the operating voltage.
The behaviour of the DALI device cannot be parameterised directly when the
operating voltage fails. As a failure in the operating voltage however
simultaneously leads to a failure of the DALI bus voltage, the response of
the device can be set in the General parameter window via the parameter
"Reaction on DALI or EIB bus voltage failure". The following options are
available for the DALI outputs: no change, turn on value, maximum and
minimum dimming value or Off.
With the "no change" setting, it is possible that the lights will flicker briefly
when the operating voltage fails. This depends on the ballast.
Scene sequences or the dynamic operating mode are retained with their
current brightness value and are not continued after recovery of the
operating voltage. The connected DALI devices adopt the state which was
parameterised after bus voltage recovery.
The function of the burn-in time is lost on bus voltage failure and is
deactivated after voltage recovery. The previously elapsed burn-in time is
lost.
The information about the DALI device selected via the object "Select
Device" is retained.
The operating voltage failure on the DALI device means that the
lamps switch off and the ballasts no longer function. This state
is detected as a ballast fault by the gateway.
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