Dimming actuator
Check manufacturer's instructions.
Exchange lamps for another type.
Cause 2: Dimming principle and lamps do not optimally match.
For HV-LED: Check operation in another dimming principle, reduce connected load as
well if necessary.
For LV-LED: Check the lamp operating device and replace as necessary.
With the "Universal" setting: Define the dimming principle manually.
Connected HV-LED lamps or compact fluorescent lamps in the lowest dimming position are too
bright; dimming range is too small
Cause 1: The set minimum brightness is too high.
Reduce minimum brightness.
Cause 2: HV-LED trailing edge phase control dimming principle does not optimally match the
connected lamps.
Check operation in the "HV-LED leading edge phase control" setting, reduce connected
load as well if necessary.
Exchange lamps for another type.
Output has switched off.
Cause 1: overheating protection has tripped.
Disconnect mains supply and all outputs from the mains, switch-off corresponding circuit
breakers.
HV-LED trailing edge phase control: Reduce the connected load. Exchange lamps for an-
other type.
HV-LED leading edge phase control: Reduce the connected load. Check the operation in
the "HV-LED trailing edge phase control" setting. Exchange lamps for another type.
Let device cool down for at least 15 minutes. Check installation situation, ensure cooling,
e.g. provide distance from surrounding devices.
Cause 2: Surge protection has triggered.
HV-LED trailing edge phase control: Check the operation in the "HV-LED leading edge
phase control" setting, reduce the connected load as well if necessary.
Exchange lamps for another type.
The response of the surge protection can be signalled by sending a short-circuit telegram
or can be determined by polling the "short-circuit" communication object.
Cause 3: short-circuit in output circuit
Disconnect mains voltage and affected output from the mains supply.
Eliminate short-circuit.
First switch on the output voltage again and then the mains supply. Switch the affected
output off and on again.
When a short-circuit occurs the affected output switches off. Automatic restart when short-
circuit is eliminated within 100 ms (inductive load) or 7 seconds (capacitive or ohmic
load). After that lasting switch-off.
When a short-circuit occurs during the calibration process, the load calibrates itself again
after the short-circuit is eliminated.
Cause 4: load failure.
Check load, replace light bulb. For inductive transformers, check primary fuse and replace
if necessary.
Manual control with button field not possible
Cause 1: Manual control has not been programmed.
Program manual control.
Cause 2: Manual control via bus disabled.
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