Vacon NXI - Page 73

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7
Fault
code
Fault
Possible cause
Correcting measures
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 distributor near
to you.
13
Inverter
undertemperat
ure
Heatsink temperature is under –10°C
14
Inverter
overtemperatu
re
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.
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.
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