Check / correct parameter setting.
Acceleration, current settings and
U/f settings, switching frequency etc.
F31 IGBT Temperature hardware
Did F31
appear
again?
NO
YES
Measured
current =
monitored
current
YES
NO
Measure output
current in all phases
and compare to
monitoring page.
NOTE!
F31 occurs only from FR9 and bigger frame
sizes/ CH61 and bigger chassis.
NOTE!
If F31 and F41 occurs at the same time.
Use F41 troubleshooting.
F31 displayed.
Check logged
data in
fault history.
Internal fault: Check
temperature measurement
circuit or drive is too small.
Parameter setting
generated this fault.
External reason generated
this fault. Problem with
motor or output filters
needed.
Correct
parameters again.
Change several
times if needed.
Did F31
appear
again?
NO
YES
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