ABB i-bus KNX Product Manual page 151


ABB i-bus KNX
Commissioning
No.
33
This communication object is enabled if in
parameterized such that further dimming actuators can be controlled.
Via this communication object, the current brightness value of the light controller is sent on the KNX so that further devices
(slaves) can be set to the same value.
Telegram value:
As an option, the brightness value can also be internally sent in the DLR/A directly to the slave. This reduces the KNX bus
load. This property is set in the slave in
Using the function master/slave, additional luminaires such as DALI luminaires can be integrated into the lighting control with
the DLR/A using a normal ABB i-bus
Actuators SD/S. In this way, highly flexible and energy efficient KNX lighting systems can be integrated into the intelligent
installation systems.
With deactivated light control (telegram with the value 0 to the communication object Activate function controller) the
brightness value is forwarded from the master via communication object Master: brightness value. In this way, the lighting
combination (master/slave) is always controlled as a unit even with deactivated light control.
The master/slave unit is separated, for example, by deactivation of the slave (telegram with the value 0 to communication
object Activate function slave). If the slave mode is deactivated, the brightness values received from the slave via the
communication object Master/Slave brightness value is not switched to its output.
39
This communication object is enabled if in
is parameterized as a master and an offset is enabled.
Using this communication object, the current brightness value of the control with the parameterized offset is sent on the bus,
so that further devices (slaves) can be set to the same value. Alternatively, this value can also be transferred internally in the
DLR/A to other lighting groups (slave).
Telegram value:
If smaller or larger brightness values result through the offset, the maximum or minimum control limits are set.
The offset can be switched on (activated, value 1) or switched off (deactivated, value 0) via the next communication object
Master: Offset activate. This is particularly useful if no natural light shines through the window and differing brightness from
two lighting strips is inexpedient to light up the room uniformly.
With deactivated light control (telegram with the value 0 to the communication object Activate function controller) the
brightness value is forwarded from the master via communication object Master: brightness value. In this way, the lighting
combination (master/slave) is always controlled as a unit even with deactivated light control.
The master/slave unit is separated, for example, by deactivation of the slave mode (telegram with the value 0 to the
communication object Activate slave mode). If the slave mode is deactivated, the brightness values received from the slave
via the communication object Master/Slave brightness value is not switched to the DALI output.
Function
Master: Brightness value
Parameter window - Gx Light
0 = OFF, lighting group is switched off, function Slave remains active
...
255 = 100 %
Parameter window - Gx
®
DALI Gateway or other 1-10 V luminaires via the ABB i-bus
Master: Brightness offset
Parameter window - Gx Light
0 = OFF, lighting group is switched off, Slave mode
...
255 = 100 %
Object name
Group 1
controller, page 95, the lighting group is
Slave, page 108, using the parameter Slave is controlled via.
Group x
controller, page 95, the lighting group of the DLR/A
remains active
DLR/A 4.8.1.1 | 2CDC507128D0202 149
Data type Flags
1 bit C, R, T
DPT 5.001
®
KNX Switch/Dim
1 byte C, R, T
DPT 5.001