Fault tracing
vacon • 149
Local contacts: http://drives.danfoss.com/danfoss-drives/local-contacts/
9
25
Microprocessor
watchdog fault
-
faulty operation
-
component failure
Subcodes:
S1 = CPU watchdog timer
S2 = ASIC reset
Reset the fault and restart.
Should the fault re-occur,
contact your distributor.
26
Startup prevented
Start-up of the drive has been prevented.
Subcodes:
S1 = Prevention of accidental start-up.
S2 = Appears if START command is ON,
when returning to READY STATE after
Safe Disable has been active.
S30 = Appears if START command is ON
after system software has been
downloaded, after application has been
downloaded or application has been
changed.
Cancel prevention of start-up
if this can be done safely.
29
Thermistor fault
The thermistor input of option board has
detected increase of the motor tempera-
ture.
Subcodes:
S1 =Thermistor input activated on
OPT-AF board
S2 = Special application
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
warning
Safe disable inputs SD1 and SD2 are acti-
vated through the option board OPT-AF.
Contact your distributor.
31
IGBT temperature
(hardware)
IGBT Inverter Bridge overtemperature
protection has detected too high a short-
term overload current.
Check loading.
Check motor size.
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
VACON
®
NXS Control Unit can not con-
trol VACON
®
NXP Power Unit and vice
versa.
Change control unit.
37
Device changed
(same type)
Option board or power unit changed.
New device of same type and rating.
Subcodes:
S1 = Control board
S2 = Control unit
S3 = Power board
S4 = Power unit
S5 = Adapter board and slot
Reset. Device is ready for
use.
Old parameter settings will
be used.
Table 60. Fault codes
Fault
code
Fault
Possible cause
Correcting measures
Содержание NX
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