WEG MVW3000 Series, Programming Manual

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7
DIAGNOSTICS AND TROUBLESHOOTING
7 DIAGNOSTICS AND TROUBLESHOOTING
This chapter assists the user in the identification and correction of possible faults that may occur during the inverter
operation. Guidance on the necessary periodical inspections and cleaning of the inverter is also provided.
7.1 ALARMS, FAULTS AND POSSIBLE CAUSES
When faults or alarms are detected, the inverter indicates them on the HMI. Alarms and faults are displayed as
AXXX (for alarms) and FXXX (for faults), and “XXX” is the code of the alarm or fault.
Exit 13:38
A0094 LOC
0rpm
Warning
Inverter
ventilation alarm
A0094
!
Reset
Exit 13:38
F0014 LOC
0rpm
Warning
The closing of the
input CB failed
F0014
!
Reset
Figure 7.1: Example of alarm and fault codes displayed on the HMI
If a fault occurs the inverter is disabled, whereas in an alarm event it continues operating normally. In order to
restart the inverter after a fault has occurred, it must be reset. The reset can normally be performed in the following
manners:
By pressing the key
O
(Manual Reset).
Automatically through P0206 (Auto-reset).
Via digital input: DI3 (P0265 = 12) or DI4 (P0266 = 12) or DI5 (P0267 = 12) or DI6 (P0268 = 12) or DI7
(P0269 = 12) or DI8 (P0270 = 12) or DI9 (P0271 = 12) or DI10 (P0272 = 12): DI Reset.
Via networks.
The table below defines each alarm/fault code, explains how to reset the faults and shows the possible causes for
each one.
Fault/alarm Reset Possible causes
F0003
Under Voltage / Phase Loss
Power-on.
Manual (
O
/RESET key).
Auto-reset.
It resets automatically after the cause is
eliminated.
DIx.
Networks.
Inverter input voltage below 70 %.
Power supply undervoltage.
Incorrect settings of the input transformer primary
taps.
See P0673 (Undervoltage level at the inverter in-
put).
F0006
Mains Unbalance/ Phase Loss
Power-on.
Manual (
O
/RESET key).
Auto-reset.
It resets automatically after the cause is
eliminated.
DIx.
Networks.
Phase loss at the power supply.
Voltage imbalance greater than 10 % of the rated
value.
A0008
Timeout in the synchronism with
the input line during synchronous
transfer
Manual (
O
/RESET key). Synchronism function could not synchronize suc-
cessfully.
MVW3000 | 7-1