ABB i-bus KNX Product Manual page 93


ABB i-bus KNX
Commissioning
If in the following the communication objects Switch (ON telegram) or Brightness value are mentioned, it
also applies for the communication objects Switch/status or Brightness value/status.
Brightness value after switching on
Options:
This parameter defines the brightness value for operating function Staircase lighting, which is set after the
dimming up phase and before dimming down (pre-warning phase).

100 % (255)...0 % (OFF): Brightness value used by the lighting group during the running function
Staircase lighting after dimming up as its set value.
Dimming to basis brightness
Options:
This parameter defines the brightness value that is set after the Staircase lighting time has timed out
taking the dimming down time (pre-warning phase) into consideration.

100 % (255)...0 % (OFF): Brightness value to which the lighting group is set after the dimming time.
The Basis brightness hold time as well as the Time for dimming down after light on (Warning before
light turned off) is programmable in the parameter window
Note
Typical applications for basis brightness are e.g. corridors in nursing homes. The lighting is never
completely switched off in these corridors. A basis brightness of approx. 20 % should always exist. If a
person enters the area, it should be illuminated for a certain time (staircase lighting time) with maximum
brightness (100 %).
If function staircase lighting is active (running):
Behaviour on ...
100 % (255)
99 % (252)
...
1 % (3)
0 % (OFF)
100 % (255)
99 % (252)
...
30 % (77)
...
1 % (3)
0 % (OFF)
Brightness value
Options: no reaction
set function in standby
With activated function Staircase lighting, the parameter can be used to define the reaction to a
brightness value telegram.

no reaction: A brightness value telegram is ignored.

set function in standby: A brightness telegram ends function Staircase lighting, and the DLR/A
carries out the brightness telegram via the communication object Brightness value. The
function Staircase lighting is latent and waits until a renewed activation via the communication
object function Activate staircase lighting or via an ON telegram to the communication object
Switch.
Parameter window General, page 40.
DLR/A 4.8.1.1 | 2CDC507128D0202 91