Options
vacon • 85
Local contacts: http://drives.danfoss.com/danfoss-drives/local-contacts/
8
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.
10
Input phase
Input line phase is missing.
Check supply voltage, fuses and
cable.
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 temperature.
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 temperature.
Make sure that the switching fre-
quency is not too high in relation to
ambient temperature and motor
load.
15
Motor stalled
Motor is stalled.
Check motor and load.
Insufficient motor power, check
motor stall protection parametriza-
tion.
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 protec-
tion 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 con-
tact your closest VACON
®
represen-
tative.
27
Back EMF
Protection of unit when starting
with rotating motor
Reset the fault and restart.
Should the fault re-occur, contact the
distributor near to you.
30
STO fault
Safe torque off signal does not
allow drive to be set as ready
Reset the fault and restart.
Should the fault re-occur, contact the
distributor near to you.
Table 36. Fault codes and descriptions.
Fault
code
Fault name Subcode
Possible cause
Remedy