112 • vacon
FAULT TRACING
9
Fault
code
Fault
Possible cause
Correcting measures
24
Counter fault
Values displayed on counters are
incorrect
25
Microprocessor
watchdog fault
faulty operation
component failure
Reset the fault and restart.
Should the fault re-occur, contact the
distributor near to you.
26
Start-up
prevented
Start-up of the drive has been prevented.
Run request in ON when new application
is loaded to the drive
Cancel prevention of start-up if this can
be done safely.
Remove Run request
29
Thermistor
fault
The thermistor input of option board has
detected increase of the motor
temperature
Check motor cooling and loading
Check thermistor connection
(If thermistor input of the option board is
not in use it has to be short circuited)
30
Safe disable
The input on OPT-AF board has opened
Cancel Safe Disable if this can be done
safely.
31
IGBT temperature
(hardware)
IGBT Inverter Bridge overtemperature
protection has detected too high a short
term overload current
Check loading.
Check motor size.
Make identification run.
32
Fan cooling
Cooling fan of the AC drive does not start,
when ON command is given
Contact the distributor near to you.
34
CAN bus
communication
Sent message not acknowledged.
Ensure that there is another device on
the bus with the same configuration.
35
Application
Problem in application software
Contact your distributor. If you are
application programmer check the
application program.
36
Control unit
NXS Control Unit can not control NXP
Power Unit and vice versa
Change control unit
37
Device changed
(same type)
Option board or control unit changed.
Same type of board or same power rating
of drive.
Reset. Device is ready for use.
Old parameter settings will be used.
38
Device added
(same type)
Option board or drive added.
Reset. Device is ready for use.
Old board settings will be used.
39
Device removed Option board removed.
Reset. Device no longer available.
40
Device
unknown
Unknown option board or drive.
Subcode in T.14:
S1 = Unknown device
S2 = Power1not same type as Power2
Contact the distributor near to you.
41
IGBT temperature IGBT Inverter Bridge overtemperature
protection has detected too high a short
term overload current
Check loading.
Check motor size.
Make identification run.
42
Brake resistor
overtemperature
Brake resistor overtemperature
protection has detected too heavy braking
Set the deceleration time longer.
Use external brake resistor.
43
Encoder fault
Problem detected in encoder signals.
Subcode in T.14:
1 = Encoder 1 channel A is missing
2 = Encoder 1 channel B is missing
3 = Both encoder 1 channels are missing
4 = Encoder reversed
5 = Encoder board missing
Check encoder channel connections.
Check the encoder board.
Check encoder frequency in open loop.
44
Device changed
(different type)
Option board or power unit changed.
New device of different type or different
power rating.
Reset
Set the option board parameters again if
option board was changed.
Set converter parameters again if power
unit was changed.
45
Device added
(different type)
Option board of different type added.
Reset
Set the option board parameters again.
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