Slave With Offset Function - ABB i-bus KNX Product Manual

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ABB i-bus KNX
Planning and application
4.11.1

Slave with offset function

The DALI Light Controller features, in addition to the additional Slave function, an offset with which the
slave can be used to control a lower or higher level of brightness than the brightness level of the master.
In the following section, both these functions are described in more detail using a room with two lamp
strips as an example.
Using the additional Slave function, a second lamp strip (slave) can be controlled in the room. Up to now,
both lamp strips were normally controlled with the same brightness value.
With the DALI Light Controller, the transfer of the master/slave brightness value can be via a
communication object (Brightness value of slave of group X) or directly internally in the DALI Light
Controller. The bus load is minimized by internal communication. This parameterization is performed in the
Parameter window - Gx
The daylight provides more light to the area near the window than the area at the rear of the room. In order
to sufficiently light up the rear of the room, strip 1 must provide brightness value x. Using the daylight, lamp
strip 2 can be controlled with a lower brightness value (x - x %), without the room being too dark.
In the DALI Light Controller, an offset is available for this reaction for every light controller lighting group.
This parameterization is performed in the
for the offset is visible if the parameter Light controller controls other dimmer actuators as "master" is set to
Yes. A percentage value x can be parameterized as an offset. The slave is controlled with a brightness
value X % brighter or darker than the master.
Slave, page 112.
Parameter window - Gx Light controller, page 99. The parameter
DLR/S 8.16.1M | 2CDC 507 100 D0202 193