Vacon NX series Applications Manual page 389

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