Vacon NX Series Applications Manual page 376

VACON · 376
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
< 4mA (sel. signal
range 4 to 20 mA)
51 External fault
52 Keypad communi-
cation fault
10
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 different type
or different power rating.
Option board of different
type added.
Division by zero has occur-
red in application program.
Current at the analogue
in
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.
LOCAL CONTACTS: HTTP://DRIVES.DANFOSS.COM/DANFOSS-DRIVES/LOCAL-CONTACTS/
FAULT TRACING
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 fre-
quency in the open loop.
Reset.
Set the option board parameters
again if option board was changed.
Set AC drive parameters again if
power unit was changed.
Reset.
Set the power unit parameters
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.