Frequently asked questions
How to change the channel mode Leading/Trailing on the C-Bus Digital dimmer 5508D1D/5504D2D using the override button?
FAQ000263859
04 December 2025
Dimming Mode (TE/LE) Selection
By default, all dimmer channels are set to Trailing Edge mode by default. The dimmer enables selecting the dimming mode per channel, Trailing edge (TE), or Leading edge (LE) compatible with the load changed via the front panel
Note:
- The dimmer channels do not automatically change mode when the connected load type is incompatible. If the selected mode is incompatible with the attached load, the channel may shut down and the indicator will slowly flash red, indicating a mode error.
- Before operating the load, ensure its compatibility with the dimming mode and check the correctness of its wiring.
To change the channel mode, press and hold the channel button for >10s. The channel will turn off briefly and turn on again in the opposite mode.
The button indicator will change color. I.e Green for Leading and Yellow for Trialing
