Vacon NX series Applications Manual page 387

FAULT TRACING
Fault
Fault
code
18 ** Unbalance
22 EEPROM check-
sum fault
24 ** Counter fault
25 Microprocessor
watchdog fault
26 Start-up prevented
29 * Thermistor fault
30 Safe disable
31 IGBT temperature
(hardware)
32 Fan cooling
34 CAN bus commu-
nication
35 Application
24-HOUR SUPPORT +358 (0)201 212 575 · EMAIL: VACON@VACON.COM
Subcode in
Possible cause
T.14
S1 = Cur- Unbalance between power
rent unbal- modules in parallelled
ance power units.
S2 = DC
voltage
unbalance
Parameter save fault.
operation malfunction
•
defective component
•
Values displayed on coun-
ters are incorrect
operation malfunction
•
defective component
•
Start-up of the drive has
been prevented. Run
request in ON when new
application is downloaded to
the drive.
The thermistor input of
option board has detected
increase of the motor tem-
perature.
The input on OPTAF board
has opened,
IGBT Inverter Bridge over-
temperature protection has
detected too high a short
term overload current
Cooling fan of the AC drive
does not start, when ON
command is give.
Sent message not acknowl-
edged.
Problem in application soft-
ware.
VACON · 387
How to correct the fault
If the fault occurs again, ask
instructions from the distributor
near to you.
If the fault occurs again, ask
instructions from the distributor
near to you.
Reset the fault and start the drive
again. If the fault shows again, ask
instructions from the distributor
near to you.
Cancel prevention of start-up if this
can be done safely. Remove Run
request
Do a check of the motor cooling
and loading. Do a check of the ther-
mistor connection. (If thermistor
input of the option board is not in
use it has to be short circuited).
Cancel Safe Disable if this can be
done safely.
Do a check of the loading. Do a
check of the motor size. Make an
identification run.
Ask instructions from the distribu-
tor near to you.
Make sure that there is another
device on the bus with the same
configuration.
Ask instructions from the distribu-
tor near to you. If you are an appli-
cation programmer, do a check of
the application program.
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