Overlapping Lighting Groups - ABB i-bus KNX Product Manual

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ABB i-bus KNX
Commissioning
3.1.3

Overlapping lighting groups

There is always the possibility of integrating a lamp (DALI device) in several lighting groups. In this case,
we refer to several overlapping lighting groups.
The DLR/S does not forcibly disable this option. However, these overlapping lighting groups are not
specially supported. There are also no special parameterization options that can be used to determine how
an overlapping lighting group should behave when the lamps in a lighting group assume different states.
It is assumed that the overlapping lighting groups will report the following states/values as the status value:

Switch state: ON, if at least one lamp is switched on

Brightness value: Average brightness value
It is not recommended, especially with constant light control, to use overlapping lighting groups. The
control circuits should not mutually influence one another or be influenced by an unknown external
controller. In these cases, unsteady, incorrect or highly fluctuating constant light control can result.
Note
The telegram last entered is executed for the control of overlapping lighting groups. All DALI devices of
the lighting group concerned are controlled even when these DALI devices are also assigned to further
lighting groups.
DLR/S 8.16.1M | 2CDC 507 100 D0202 41