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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