ABB i-bus KNX Product Manual page 227

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ABB i-bus KNX
Planning and application
Reaction to Switch telegram when staircase lighting is running
If the dimming time is yet to start and the gateway receives an OFF telegram for the group, dimming down
starts immediately. If the group is currently dimming down, dimming down continues if an OFF telegram is
received. An OFF telegram during basic brightness either switches off the lighting or sets it to the turn off
brightness. If the time period for the basic brightness is indefinite, the staircase lighting remains switched
on at that brightness.
As long as the Staircase lighting function is active, an ON telegram initiates a restart of the staircase
lighting. If the staircase lighting is already at the switch-on value, the switch-on phase is restarted
(retriggered). During dimming down or on reaching basic brightness, the staircase lighting is retriggered
(restarted from the beginning). However, the dimming-up phase does not rerun. There is a parametrizable
pumping up feature – see Group x/Staircase lighting parameter window. Pumping up extends the staircase
lighting time by switching it ON several times. Pumping up can be set for up to 5 x the staircase lighting
time.
Reaction to Dim, Brightness value and Scene telegram when staircase lighting is running
Reaction to incoming Dim, Brightness value and Scene telegrams can be parametrized in the Group
x/Staircase lighting parameter window. The options are to ignore the telegram or to put the staircase
lighting in standby and execute the command. If the staircase lighting is in standby it can be retriggered at
any time.
Reaction on block and forced operation
If during the staircase lighting sequence the group is blocked by the Block group object or forcibly operated
via the Forced operation group object, the current brightness value is frozen or the forced brightness is set
and the group is blocked. When the block or forced operation ends, the Staircase lighting function switches
to standby mode and can be retriggered. If the function was inactive, it stays inactive.
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