Universal dimmer actuators GDA2K-400 KNX / GDA4K-400 KNX
Updated: Mai-17 (Subject to changes) Page 5 of 63
1.1 Operation
Every dimmer actuator has a manual button.
When manual mode is activated the dimmer can only be operated with the buttons.
Bus telegrams will not be executed.
4 buttons and 4 LEDs are available for each channel.
The LEDs shown the current state as a bar display:
LED 1
LED 2
LED 3
LED 4
> 0%
> 25%
> 50%
> 75%
The device dims down to 0% in the event of excess temperature or a short circuit in the load.
The buttons call up the following dimming values:
Table 1:
Button 1 Button 2 Button 3 Button 4
25%
or OFF
50%
75%
100%
In standard operation:
Pressing a button establishes the desired dimming value.
A status established via the channel button can be overwritten via the bus at any time.
In manual operation with the manual button or Manual object:
If the "manual" function is selected, the associated LED lights up.
Any time-based functions that are running (e.g. soft switching) will be terminated.
The dimming status will be frozen and can only be changed via the channel buttons.
Bus telegrams will not be executed anymore.
The "Manual" state will be reset in the event of a mains failure.
After manual operation has been cancelled, already received bus events will not be executed again.
