Fault
code
Fault
Subcode in
T.14
Possible cause How to correct the fault
43 Encoder fault 1 =
Encoder 1
channel A
is missing
Problem detected in
encoder signals.
Do a check of the encoder connec-
tions. Do a check of the encoder
board. Do a check of the encoder
frequency in the open loop.
2 =
Encoder 1
channel B
is missing
3 = Both
encoder 1
channels
are miss-
ing
4 =
Encoder
reversed
5 =
Encoder
board
missing
44 ** Device changed
(different type)
Option board or power unit
changed. New device of dif-
ferent type or different
power rating.
Reset. Set the option board param-
eters again if option board was
changed. Set converter parameters
again if power unit was changed.
45 ** Device added (dif-
ferent type)
Option board of different
type added.
Reset. Set the power unit parame-
ters again.
49 Division by zero in
application
Division by zero has occur-
red in application program.
If the fault shows again while the
AC drive is in run state, ask
instructions from the distributor
near to you. If you are an applica-
tion programmer, do a check of the
application program.
50 * Analogue input I
in
< 4mA (sel. signal
range 4 to 20 mA)
Current at the analogue
input is < 4mA. control cable
is broken or loose signal
source has failed.
Do a check of the current loop cir-
cuitry.
51 External fault Digital input fault. Remove fault situation on external
device.
52 Keypad communi-
cation fault
The connection between the
control panel (or NCDrive)
and the drive is defective.
Do a check of the control panel
connection and the control panel
cable.
53 Fieldbus fault The data connection
between the fieldbus master
and the fieldbus board is
defective.
Do a check of the installation and
fieldbus master. If the installation
is correct, ask instructions from
the distributor near to you.
FAULT TRACING VACON · 389
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9
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