WEG MVW3000 Series, Programming Manual

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7
DIAGNOSTICS AND TROUBLESHOOTING
Fault/alarm Reset Possible causes
F1080
Cell U12 phase IGBT
Contact WEG Service Center. Short circuit at the inverter output.
Trigger board of the IGBTs of the cell phase arm
disconnected.
IGBTs of the cell phase arm operating out of the
saturation region.
IGBTs or trigger board of the cell phase arm de-
fective.
Fault on the desaturation signal feedback or
gate-driver supply.
F1081
Cell U12 neutral IGBT
Contact WEG Service Center. Short circuit at the inverter output.
Trigger board of the IGBTs of the cell neutral arm
disconnected.
IGBTs of the cell neutral arm operating out of the
saturation region.
IGBTs or trigger board of the cell neutral arm de-
fective.
Fault on the desaturation signal feedback or
gate-driver supply.
F1083
Cell U12 phase pulse feedback
Contact WEG Service Center. Fault on the commutation of the IGBTs of the cell
phase arm.
Measurement circuit of the confirmation signal of
the commutation of the IGBTs of the phase arm
disconnected or defective.
IGBTs or trigger board of the cell phase arm de-
fective.
F1085
Cell U12 neutral pulse feedback
Contact WEG Service Center. Fault on the confirmation of the commutation of
the IGBTs of the cell neutral arm.
Measurement circuit of the confirmation signal of
the commutation of the IGBTs of the neutral arm
disconnected or defective.
IGBTs or trigger board of the cell neutral arm de-
fective.
F1086
Cell U12 electronics power supply
Contact WEG Service Center. Voltages of the internal electronic circuits of the
cell out of the operation level.
Defect on the cell power supply.
F1091
Cell U12 modulation synchronism
Contact WEG Service Center. Fault in the synchronism between the MCC1
control board of the cell and the MVC3 main con-
trol.
F1092
Cell U12 bypass system
Contact WEG Service Center. Fault in the operation of the cell bypass system.
Bypass system is not connected or defective.
F1093
Communication with cell U12
Contact WEG Service Center. Fault on the communication between the MCC1
control board of the cell and the MVC3 main con-
trol.
Break or defect on the cell communication optic
cable.
F1095
Incompatible cell U12 firmware
Contact WEG Service Center. Firmware version of the MCC1 control board of
the cell incompatible with the MVC3 main control.
F1096
Incompatible cell U12 model
Contact WEG Service Center. Cell model incompatible or invalid with the in-
verter model.
F1097
Cell U12 insulation defective
Contact WEG Service Center. Fault in the internal insulation of the cell: Contact
between some energized point of the circuit and
the frame.
Fault on the capacitor discharge resistors of the
cell DC link.
F1098
Firmware update or PLD cell U12
Contact WEG Service Center. Fault in the update process of the processor
firmware or in the reconfiguration of the cell PLD.
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