
Fault
code
Fault ID
Fault name
Possible cause
How to correct the fault
41
400
IGBT temperature
The calculated IGBT tem-
perature is too high.
•
the motor load is too
high
•
the ambient tempera-
ture is too high
•
hardware malfunction
Do a check of the parameter set-
tings.
Examine the actual quantity and
flow of cooling air.
Do a check of the ambient temper-
ature.
Examine the heatsink for dust.
Make sure that the switching fre-
quency is not too high in relation to
the ambient temperature and the
motor load.
Do a check of the cooling fan.
Make an identification run.
44
431
Device changed (dif-
ferent type)
There is a new power unit of
a different type. Parameters
are not available in the set-
tings.
Reset the fault.
The drive reboots after you reset
the fault.
Set the power unit parameters
again.
433
Device changed (dif-
ferent type)
The option board in slot C
was replaced by a new one
that you have not used
before in the same slot. No
parameter settings are
saved.
Reset the fault. Set the option
board parameters again.
434
Device changed (dif-
ferent type)
The same cause as in ID433,
but refers to Slot D.
435
Device changed (dif-
ferent type)
The same cause as in ID433,
but refers to Slot D.
45
441
Device added (differ-
ent type)
There is a new power unit of
a different type. Parameters
are not available in the set-
tings.
Reset the fault.
The drive reboots after you reset
the fault.
Set the power unit parameters
again.
443
Device added (differ-
ent type)
A new option board, that you
have not used before in the
same slot, was put in slot C.
No parameter settings are
saved.
Set the option board parameters
again.
444
Device added (differ-
ent type)
The same cause as in ID443,
but refers to Slot D.
445
Device added (differ-
ent type)
The same cause as in ID443,
but refers to Slot E.
46
662
Real Time Clock
The voltage of the RTC bat-
tery is low.
Replace the battery.
VACON · 374
FAULT TRACING
11
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