Honeywell NX series User Manual page 109

9
108(110)
Fault Fault
code
9 Undervoltage
10 Input line
supervision
11 Output phase
supervision
12 Brake chopper
supervision
13 Frequency con-
verter under-
temperature
14 Frequency con-
verter over-
temperature
15 Motor stalled
16 Motor over-
temperature
17 Motor
underload
Unbalance
18
EEPROM
22
checksum fault
24 Counter fault
25 Microprocessor
watchdog fault
26 Start-up
prevented
29 Thermistor fault
30 Safe disable
FAULT TRACING
Possible cause
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
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
Current measurement has detected that
there is no current in one motor phase.
−
no brake resistor installed
−
brake resistor is broken
−
brake chopper failure
Heatsink temperature is under –10°C
Heatsink temperature is over 90°C (or
77ºC, NX_6, FR6).
Overtemperature warning is issued when
the heatsink temperature exceeds 85°C
(72ºC).
Motor stall protection has tripped.
Motor overheating has been detected by
frequency converter motor temperature
model. Motor is overloaded.
Motor underload protection has tripped.
Unbalance between power modules in
parallelled units.
Subcode in T.14:
S1 = Current unbalance
S2 = DC voltage unbalance
Parameter save fault
−
faulty operation
−
component failure
Values displayed on counters are
incorrect
−
faulty operation
−
component failure
Start-up of the drive has been prevented.
Run request in ON when new application
is loaded to the drive
The thermistor input of option board has
detected increase of the motor
temperature
The input on OPT-AF board has opened
Correcting measures
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.
Check supply voltage, fuses and cable.
Check motor cable and motor.
Check brake resistor and cabling.
If the these are ok, the chopper is faulty.
Contact the distributor near to you.
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.
Check motor and load.
Decrease motor load.
If no motor overload exists, check the
temperature model parameters.
Check load.
Should the fault re-occur, contact the
distributor near to you.
Should the fault re-occur, contact the
distributor near to you.
Reset the fault and restart.
Should the fault re-occur, contact the
distributor near to you.
Cancel prevention of start-up if this can
be done safely.
Remove Run request
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)
Cancel Safe Disable if this can be done
safely.