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84(110) CONTROL
KEYPAD
7
Fault
code
Fault
Possible cause
Correcting measures
9
Undervoltage
DC-link voltage is under the voltage limits
defined.
−
most probable cause: too low a
supply voltage
−
frequency converter internal fault
−
defect input fuse
−
external charge switch not closed
In case of temporary supply voltage
break reset the fault and restart the
frequency converter. Check the supply
voltage. If it is adequate, an internal
failure has occurred.
Contact the distributor near to you.
10
Input line
supervision
Input line phase is missing.
Subcode in
T.14
:
S1 = DC-link too low during run
S2 = No data from power unit
S3 = Undervoltage control supervision
Check supply voltage, fuses 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 and cabling.
If the these are ok, the chopper is faulty.
Contact the distributor near to you.
13
Frequency con-
verter under-
temperature
Heatsink temperature is under –10
°
C
14
Frequency con-
verter over-
temperature
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 and load.
16
Motor over-
temperature
Motor overheating has been detected by
frequency converter motor temperature
model. Motor is overloaded.
Decrease motor load.
If no motor overload exists, check the
temperature model parameters.
17
Motor
underload
Motor underload protection has tripped.
Check load.
18
Unbalance
Unbalance between power modules in
parallelled units.
Subcode in
T.14
:
S1 = Current unbalance
S2 = DC voltage unbalance
Should the fault re-occur, contact the
distributor near to you.
22
EEPROM
checksum fault
Parameter save fault
−
faulty
operation
−
component
failure
Should the fault re-occur, contact the
distributor near to you.
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.
Run request in ON when new application
is loaded to the drive
Cancel prevention of start-up if this can
be done safely.
Remove Run request
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)
30
Safe disable
The input on OPT-AF board has opened
Cancel Safe Disable if this can be done
safely.