Fault
code
Fault ID Fault name Possible cause How to correct the fault
47 663 Software updated The software of the drive
was updated, the full soft-
ware package or an applica-
tion.
No steps are necessary.
50 1050 AI low fault 1 or more of the available
analogue input signals is
below 50% of the minimum
signal range.
A control cable is defective
or loose.
A malfunction in a signal
source.
Replace the defective parts.
Do a check of the analogue input
circuit.
Make sure that parameter AI1 Sig-
nal Range is set correctly.
51 1051 Device external fault The digital input signal that
is set with parameter
P3.5.1.11 or P3.5.1.12 was
activated.
This is a user-specified fault.
Do a check of the digital inputs and
schematics.
52 1052 Keypad communica-
tion fault
The connection between the
control panel and the drive
is defective.
Do a check of the control panel
connection and the control panel
cable if you have it.1352
53 1053 Fieldbus communica-
tion fault
The data connection
between the fieldbus master
and the fieldbus board is
defective.
Do a check of the installation and
fieldbus master.
54 1354 Slot A fault A defective option board or
slot
Do a check of the board and the
slot.
Ask instructions from your nearest
distributor.
1454 Slot B fault
1554 Slot C fault
1654 Slot D fault
1754 Slot E fault
FAULT TRACING VACON · 375
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