Vacon NXI, User Manual

Page: 101 / 105

fault tracing vacon • 101
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9
Fault
code
Fault Possible cause Correcting measures
10 Input line
supervision Input line phase is missing. Check supply voltage and cable.
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.
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 Microprocesso
r 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.