100 • vacon fault tracing
Tel: +358-201-2121 • Fax: +358-201-212 205
9
11 Output phase
supervision
Current measurement has detected
that there is no current in one motor
phase.
Check motor cable and motor.
12 Brake chopper
supervision
no brake resistor installed
brake resistor is broken
brake chopper failure
Check brake resistor.
If the resistor is ok, the chopper is
faulty. Contact the nearest Vacon
distributor.
Please visit:
http://www.vacon.com/wwcontacts.html
13 Inverter
undertemperature
Heatsink temperature is under –10°C
14 Inverter
overtemperature
Heatsink temperature is over 90°C or
77ºC (NX_6, FR6).
Overtemperature warning is issued
when the heatsink temperature exceeds
85°C (72ºC).
Check the correct amount and flow of
cooling air.
Check the heatsink for dust.
Check the ambient temperature.
Make sure that the switching frequency
is not too high in relation to ambient
temperature and motor load.
15 Motor stalled Motor stall protection has tripped. Check motor.
16 Motor over-
temperature
Motor overheating has been detected by
inverter motor temperature model.
Motor is overloaded.
Decrease the motor load.
If no motor overload exists, check the
temperature model parameters.
17 Motor underload Motor underload protection has tripped.
22 EEPROM
checksum fault
Parameter save fault
faulty operation
component failure
24 Counter fault Values displayed on counters are
incorrect
25 Microprocessor
watchdog fault
faulty operation
component failure
Reset the fault and restart.
Should the fault re-occur, contact the
distributor near to you.
Please visit:
http://www.vacon.com/wwcontacts.html
26 Start-up
prevented
Start-up of the drive has been
prevented.
Cancel prevention of start-up.
29 Thermistor fault The thermistor input of option board
has detected increase of the motor
temperature
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)
31 IGBT temperature
(hardware)
IGBT Inverter Bridge overtemperature
protection has detected too high a short
term overload current
Check loading.
Check motor size.
32 Fan cooling Cooling fan of the inverter does not
start, when ON command is given
Contact the nearest Vacon distributor.
Please visit:
http://www.vacon.com/wwcontacts.html
34 CAN bus
communication
Sent message not acknowledged. Ensure that there is another device on
the bus with the same configuration.
36 Control unit NXS Control Unit can not control NXP
Power Unit and vice versa
Change control unit
37 Device changed
(same type)
Option board or control unit changed.
Same type of board or same power
rating of drive.
Reset
Note: No fault time data record!
38 Device added
(same type)
Option board or drive added.
Drive of same power rating or same
type of board added.
Reset
Note: No fault time data record!
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