ABB i-bus KNX Product Manual page 40

®
ABB i-bus KNX
© 2008 ABB STOTZ-KONTAKT GmbH
Commissioning
Value object "Switch" on bus voltage recovery
Options: restore status before failure
write with 0
write with 1
With this parameter the load output can be set to a defined state at
bus voltage recovery.
•
restore status before failure: The brightness level before failure of
the bus voltage is restored.
If already controlled before bus voltage failure, it is also the case after
bus voltage recovery.
•
write with 0: The object is written with a 0 at bus voltage recovery.
The contact position is redefined and set in dependence on the set
device parameterisation.
•
write with 1: The object is written with a 1 at bus voltage recovery.
The contact position is redefined and set in dependence on the set
device parameterisation.
Example
If for example, the staircase lighting function is activated, the staircase
lighting can be triggered by a 1 switch command after bus voltage recovery.
If constant lighting control has been parameterised before bus voltage
failure it will be reactivated. The output is switched off by writing the value 0
to the object Switch. The lighting control switches to standby mode.
When writing the switch object with the value 1, control is implemented with
the set brightness value
Note
If in a parameter window the slave mode after bus voltage recovery is
parameterised as active, and the behaviour of the slave operation at switch
on is simultaneously deactivated (also parameter window X: Slave) and
if the output generates an ON command after bus voltage recovery with
the parameters described here, the slave mode is immediately deactivated.
i.e. the parameter described here Value object "Switch" on bus voltage
recovery has a higher priority than the parameter in the parameter window
X: Slave, "Slave mode after supply voltage recovery".
38