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Fault tracing
Fault
Fault name Subcode
code
System Fault
8
Undervoltage
9
Input phase
10
Output phase
11
AC drive
13
undertemperature
AC drive
14
overtemperature
Motor stalled
15
Motor
16
overtemperature
17
Motor underload
Power overload
19
Watchdog
25
27
Back EMF
Service support: find your nearest Vacon service center at www.vacon.com
Possible cause
120
Task stack overflow
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.
Input line phase is missing.
Current measurement has
detected that there is no current in
one motor phase.
Too low temperature measured in
power unit's heatsink or board.
Heatsink temperature is under -
10°C.
Too high temperature measured in
power unit's heatsink or board.
Heatsink temperature is over
100°C.
Motor is stalled.
Motor is overloaded.
Motor is under loaded
Supervision for drive power
Error in the microprocessor moni-
toring
Malfunction
Component fault
Protection of unit when starting
with rotating motor
Table 27. Fault codes and descriptions.
vacon • 80
Remedy
Reset the fault and restart.
Should the fault re-occur, con-
tact the distributor near to you.
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.
Check supply voltage, fuses and
cable.
Check motor cables and motor.
Check the ambient tempera-
ture.
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.
Check motor and load.
Insufficient motor power, check
motor stall protection parame-
trization.
Decrease motor load.
If no motor overload exists,
check the temperature model
parameters.
Check load. Check underload
protection parametrization.
Drive power is to high: decrease
load.
Reset the fault and restart.
If the fault occurs again, please
contact your closest Vacon rep-
resentative.
Reset the fault and restart.
Should the fault re-occur, con-
tact the distributor near to you.
4
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