Vacon nx User Manual page 115

FAULT TRACING
Fault Fault
code
8 System fault
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
18 Unbalance
24-hour support +358 (0)201 212 575 • Email: vacon@vacon.com
Possible cause
component failure
-
faulty operation
-
Note exceptional fault data record.
S1 = Reserved
S2 = Reserved
S3 = Reserved
S4 = Reserved
S5 = Reserved
S6 = Reserved
S7 = Charging switch
S8 = No power to driver card
S9 = Power unit communication (TX)
S10 = Power unit communication (Trip)
S11 = Power unit comm. (Measurement)
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
Subcode in T.14:
S1 = DC-link too low during run
S2 = No data from power unit
S3 = Undervoltage control supervision
Input line phase is missing.
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, all FR6 690V drives).
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
Correcting measures
Reset the fault and restart.
Should the fault re-occur, contact the
distributor near to you.
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.
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