ABB i-bus KNX Product Manual page 73


ABB i-bus KNX
Commissioning
Note
The maximum and minimum dimming values selected for the lighting group are also valid with a central
telegram via the communication objects of output A.
Example: Lighting group 1 is parameterized with a minimum dimming value of 20 %; lighting group 2 is
parameterized with 10 %. If, in this constellation, the DLR/S receives a central telegram to set the
brightness value to 5, lighting group 1 is set to 20 %, and lighting group 2 is set to 10 %.
Note
The set minimum brightness value for the lighting group has nothing to do with the absolute minimum
brightness value (basic brightness) which the ballast lamp combination can assume. This device-
specific value is programmed in the device by the manufacturer during the manufacturing process.
Typically the values are between 1 and 5 %.
It is important to note that the % specification does not correlate with the KNX values but relates to the
luminous flux.
For further information see:
Maximum dimming value
Options:
This parameter defines the maximum dimming value which the lamps of the lighting group can assume.
This value is stored in the DALI devices and thus applies for all functions. If a maximum dimming value is
set which is below the minimum dimming value, the maximum dimming value is set equal to the minimum
dimming value.
If the Burn-in lamp function is activated, the lighting group will be operated only with 0 % (OFF) or 100 %
brightness, regardless of this setting.
If a brightness value is received via the communication objects Brightness value, Brightness value/Status
or Brightness value of Slave, which is above the defined maximum dimming value, the maximum dimming
value is set.
The maximum dimming value also applies in the Staircase lighting and Scenes functions.
Note
The maximum and minimum dimming values selected for the lighting group are also valid with a central
telegram via the communication objects of output A.
Example: Lighting group 1 is parameterized with a maximum dimming value of 80 %; lighting group 2 is
parameterized with 90 %. If, in this constellation, the DLR/S receives a central telegram to set the
brightness value to 5% on the communication object Brightness value or Brightness value/status, the
lighting group is set to 5 %.
DALI dimming curve, page 195
100 % (255)
99 % (252)
...
1 % (3)
DLR/S 8.16.1M | 2CDC 507 100 D0202 71