Trouble Shooting; No Output Voltage; Distortion Of Output Voltage - ABB UNV-F Operation Manual

Primary Switch Mode Inverter
UNV-F
Operation Manual
Page 24 (28)

10. Trouble shooting

All works has to be done by qualified personnel only.

10.1 No output voltage

DC input voltage O.K.?
mains switch (MCB) on?
green LED Operation on?
DC input voltage is connected properly?
DC input fuse (on DC busbar) O.K.?
signalling LED s Ui> or Ui< on ?
short circuit or overload on output?
output fuse O.K.?
If no error was found but the module still does not operate,
contact your sales agent or the producer service department.

10.2 Distortion of output voltage

overload on output? - check and reduce the load!
big inrush current of load?
distortions by load steps or current peaks?
adjustment of voltage value Uo not correct? adjust the
correct value
If no error was found but the module still does not operate,
contact your sales agent or the producer service department.
BHB.UNV-F.D65-1050.HB101