Dimming Led Lamps - Theben DU 1 Manual

8.4 Dimming LED lamps

8.4.1 General
The dimmer may only operate LED lamps for 230V mains operation (so-called retrofit lamps),
which are exclusively identified as dimmable.
In dimming response, there are also manufacturer- and type-related differences. For that
reason we recommend only operating lights of the same type in parallel on one channel.
The maximum output in trailing edge operation (RC mode) is
200 W.
In leading edge operation (L mode) it is 24 W.
The minimum output per channel is 2 W
It may be necessary to adjust the minimum dimming value for each parameter.
8.4.2 Selection of RC or L response:
Apart from the recommendations of the LED manufacturer for the respective lamp type, the
following applies:
LEDs are typically operated in RC mode in order to reduce the inrush currents of the lamps,
which can lead to disruptions in the power network.
RC mode is therefore recommended, especially at high outputs.
Another advantage: Less heat is generated in the dimmer.
L mode:
Only use with LED if a disruptive flickering is noted when dimming up or down.
Note:
Some types of lamps can cause an overload in L mode, which automatically leads to dimming
down the load.
In this case, automatic load detection must be selected (i.e. RC mode).
Flush-mounted dimming actuator DU 1