ABB Busch 6590U-127-500 Manual Del Usuario página 41

Fault Elimination
Diagnosis
ELA system hums:
Incandescent lamps
flicker:
UP sensors
do not react:
NOTE
Applies only for the "soft OFF" function (FM sensors)
Switch on to full
brightness is not
possible:
Cause/Remedy
- Amplifier input Interference
suppression defective.
Check amplifier
- Check types of loads
(e.g. mixed loads)
- Increase minimum load
- Ripple-control signal
- Supply voltage fluctuations
- place adjustment knob in
position 1 (see page 31)
- exchange the FM sensor
for a FM sensor with
version ...-104(M)
GB
41