Slave - ABB i-bus KNX Product Manual

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ABB i-bus KNX
Planning and application
4.11

Slave

If the additional function Slave is activated, the lighting group of the DLR/S adheres to the brightness
value, which is predefined by the communication object Brightness value of slave. Brightness values on
the communication object Brightness value are ignored.
Alternatively, the slave lighting group can also directly receive the Brightness value of slave in the DALI
Light Controller from another lighting group. This can be parameterized in the
Gx Slave, page 112. This internal assignment means that no KNX group assignments are required.
Furthermore, the KNX bus load is reduced through the internal communication.
A telegram with the value 0 on the communication object Function Activate Slave deactivates the Slave
function. A telegram with the value 1 reactivates the Slave function. In the non-activated state, the lighting
group again responds to the brightness values, which are sent via the communications object Brightness
value. Dimming, switch, scene or sequence telegrams are also executed.
An OFF telegram (receipt of a telegram with the value 0 on the communication object Switch, e.g. from a
presence detector) has the effect that the Slave function switches over to standby. During standby mode,
the lighting group responds to dimming, scene and sequence telegrams. Furthermore, in standby mode,
the brightness values, which the DALI Light Controller receives via the communication object Brightness
value, are executed. Brightness values that are received via the communication object Brightness value of
slave are ignored by the DALI Light Controller.
Standby mode is exited if the DALI Light Controller receives an ON telegram (receipt of a telegram with the
value 1 on the communication object Switch, e.g. by a presence detector) or a telegram with the value 1
on the communication object Function Activate Slave. The lighting group is again in slave mode and only
responds to the communication object Brightness value of slave.
The Slave function is also put into standby mode if, in the
reaction to a switch, dimming, brightness value setting telegram or scene recall is parameterized with the
option Function switches to standby. The Slave function is in standby mode. The lighting group responds
again to the communication object Brightness value of Slave if a telegram with the value 1 is received on
the communication object Switch or via the communication object Function Activate Slave.
The parameterization No reaction has the effect that no dimming, switch and brightness setting telegram
can be executed. A scene recall and storing of a scene also have no effect.
The minimum and maximum dimming values parameterized in the
also apply in the Slave function. The undershoot and overshoot of these values are set using the
parameterized minimum or maximum dimming value. If the master sends the brightness value 0, the
lighting is switched off.
190 2CDC 507 100 D0202 | DLR/S 8.16.1M
Parameter window -
Parameter window - Gx Slave, page 112, the
Parameter window Gx Group, page 67,