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/A strictly 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 scene 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
page 108. This internal assignment means that no KNX group assignment is required. Furthermore, the
KNX bus load is reduced through the internal communication.
A telegram with the value 0 on the communication object Activate function slave deactivates function
Slave. A telegram with the value 1 reactivates function Slave. 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 undertaken.
An OFF telegram (receipt of a telegram with the value 0 on the communication object Switch, e.g. by a
presence detector) has the effect that the function Slave 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 for the communication object Brightness
value, are carried out. 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 Activate function slave. The lighting group is again in slave mode and only
responds to the communication object Brightness value of slave.
The function Slave is also set to standby mode if in
to a Switch, dim or brightness vale telegram or a Recall scene, the option set function in standby is set.
The function Slave is in standby mode. The lighting group starts to respond again to the communication
object brightness value of slave if a telegram with the value 1 is received by communication objects Switch
or Activate function 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 has no effect.
The parameterized minimum and maximum dimming values also apply in function Slave in the parameter
window
using the parameterized minimum or maximum brightness value. If the master sends the brightness value
0, the lighting is switched off.
186 2CDC507128D0202 | DLR/A 4.8.1.1
Parameter window Gx Group, page 63. The undershoot and overshoot of these values are set
Parameter window - Gx
Parameter window - Gx Slave, page 108, in response
Slave,