Soft ON/OFF function

The soft-functions permit a group or a single device to be switched on or off at reduced speed if a switching command is received via the communication objects "Switching - Setting" or "Central function... - Switching". If the soft ON function is activated, a dimming procedure is executed until the switch-on brightness when switching on. This also occurs if the group or single device is already switched on to a brightness value lower than the switch-on brightness. Likewise, with the soft OFF function, a dimming process is executed to 0% brightness when receiving an OFF telegram.

The dimming speeds can be configured separately in the ETS for the soft ON and soft OFF function. Just as with relative or absolute dimming, the dimming step time is specified. The soft ON or soft OFF functions are not cannot be retriggered by the receipt of further switching telegrams while maintaining the switching status.

Dimming behaviour of the soft ON/OFF functions as an example with minimum brightness > 0%

To use the soft functions, the parameter "Switch-on/switch-off behaviour" must be activated on the parameter page "DALI system... -> Configuration groups -> [x] Group name -> Enabled functions" or "DALI system... -> Configuration single devices -> [x] Device name -> Enabled functions". The soft functions can then be configured separately for each group and single device on the parameter page "DALI system... -> Configuration groups -> [x] Group name -> Switch-on/switch-off behaviour" or "DALI system... -> Configuration single devices -> [x] Device name -> Switch-on/switch-off behaviour".

The dimming process for a soft ON function starts at the minimum brightness configured in the ETS. If a group or single device is switched off and then switched on, the operating devices jumping to the configured minimum brightness and start with the soft ON dimming process to the switch-on brightness.

The soft functions also have effects on the switching edges of the staircase function.

A group or individual disabled via the KNX can also flash depending on the ETS configuration for the disabling function. Dimming is not executed with the soft functions during ON and OFF flashing.

Activating and setting the soft ON function

In the ETS, the soft ON function can be activated separately for each group and single device on the parameter page "DALI system... -> Configuration groups -> [x] Group name -> Switch-on/switch-off behaviour" or "DALI system... -> Configuration single devices -> [x] Device name -> Switch-on/switch-off behaviour".

  1. Activate the "Soft ON function" parameter.
  • The soft ON function has been activated. The parameter for the dimming step time of the soft ON function becomes visible.
  1. Configure the parameter "Time between two dimming increments " to the necessary dimming increment time.

Activating and setting the soft OFF function

In the ETS, the soft OFF function can be activated separately for each group and single device on the parameter page "DALI system... -> Configuration groups -> [x] Group name -> Switch-on/switch-off behaviour" or "DALI system... -> Configuration single devices -> [x] Device name -> Switch-on/switch-off behaviour".

  1. Activate the "Soft OFF function" parameter.
  • The soft OFF function has been activated. The parameter for the dimming step time of the soft OFF function becomes visible.
  1. Configure the parameter "Time between two dimming increments " to the necessary dimming increment time.