Vacon 20 CP/X, Applications Manual

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Fault tracing vacon • 84
Service support: find your nearest Vacon service center at www.vacon.com
5
120 Task stack overflow
Reset the fault and restart.
Should the fault re-occur, con-
tact the distributor near to you.
9
Undervoltage
DC-link voltage is under the volt-
age limits defined.
• most probable cause: too
low a supply voltage
• AC drive internal fault
• defect input fuse
• external charge switch not
closed
NOTE!
This fault is activated only
if the drive is in Run state.
In case of temporary supply
voltage break reset the fault and
restart the AC drive. Check the
supply voltage. If it is adequate,
an internal failure has occurred.
Contact the distributor near to
you.
11 Output phase
Current measurement has
detected that there is no current in
one motor phase.
Check motor cables and motor.
13
AC drive
undertemperature
Too low temperature measured in
power unit’s heatsink or board.
Heatsink temperature is under -
10°C.
Check the ambient tempera-
ture.
14
AC drive
overtemperature
Too high temperature measured in
power unit’s heatsink or board.
Heatsink temperature is over
100°C.
Check the correct amount and
flow of cooling air.
Check the heatsink for dust.
Check the ambient tempera-
ture.
Make sure that the switching
frequency is not too high in rela-
tion to ambient temperature
and motor load.
15 Motor stalled Motor is stalled.
Check motor and load.
Insufficient motor power, check
motor stall protection parame-
trization.
16
Motor
overtemperature
Motor is overloaded.
Decrease motor load.
If no motor overload exists,
check the temperature model
parameters.
17 Motor underload Motor is under loaded
Check load. Check underload
protection parametrization.
19 Power overload Supervision for drive power
Drive power is to high: decrease
load.
25 Watchdog
Error in the microprocessor moni-
toring
Malfunction
Component fault Reset the fault and restart.
If the fault occurs again, please
contact your closest Vacon rep-
resentative.
27 Back EMF
Protection of unit when starting
with rotating motor
Reset the fault and restart.
Should the fault re-occur, con-
tact the distributor near to you.
Fault
code
Fault name Subcode Possible cause Remedy
Table 29. Fault codes and descriptions.