Art. No. DS 4092 TS
4.2.4.2.2 Rotary knob function Dimming
When using the rotary knob function "Dimming", it is possible to dim or optionally switch lighting
systems by activating dimmer actuators. Likewise, KNX speed controllers can be addressed
whereby motors can be switched on and off and the speed changed. The direction of the rotary
knob movement (clockwise or anticlockwise) specifies the switching and dimming command
(lighter ON / darker OFF).
Figure 15: Example of rotary knob function "Dimming"
(here: dimming in the brightness range)
The rotary knob function "Dimming" differentiates between four different operation concepts...
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Dimming without OFF telegram
This operation concept only outputs relative dimming commands with a step width of 100%
during a rotary knob movement. Stop telegrams stop a dimming process at the end of the
operation. It is thus possible to set any brightness values of a lighting system, for example.
Switching telegrams are not transmitted by the rotary knob to the actuator in this
configuration. For this reason, it is possible to combine the rotary knob operation concept
"Dimming without OFF telegram" with the push-button function "Switching", whereby a
dimmer actuator can be dimmed (rotary knob movement) as well as switched (push-button
operation).
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Dimming with OFF telegram
This operation concept functions in the dimming process just like the concept "Dimming
without OFF telegram", the only difference being that the device can also switch off the
activated actuator by means of a rotary knob operation. Since this operation concept
performs switching and dimming, it can be used autonomously without any additional
operating elements. Hence, the push-button in this case, can be configured for another
control function.
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Dimming Comfort without OFF telegram
This operation concept supports the operation of the rotary knob for dimming dependent on
speed and rotation angle. Here, depending on the speed of rotation, relative dimming is
possible by small and large step widths, thereby allowing the brightness of a lighting
system to be set finely and gradually.
Switching telegrams are not transmitted by the rotary knob to the actuator in this concept.
For this reason, it is possible to combine the rotary knob operation concept "Dimming
Comfort without OFF telegram" with the push-button function "Switching", whereby a
dimmer actuator can be dimmed (rotary knob movement) as well as switched (push-button
operation).
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Software "Rotary sensor with extensions 10FE1x"
Functional description