Vacon NX User Manual page 141

FAULT TRACING
Fault
Fault
code
8 System fault
9 Undervoltage
10 Input line
supervision
12 Brake chopper
supervision
13 Frequency
converter
undertemperature
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Table 55. Fault codes
Possible cause
- component failure
- faulty operation
Note exceptional fault data record.
Subcode in T.14:
S1 = Feedback of motor voltage
S2 = Reserved
S3 = Reserved
S4 = ASIC trip
S5 = Disturbance in VaconBus
S6 = Feedback of charging switch
S7 = Charging switch
S8 = No power to driver card
S9 = Power unit communication (TX)
S10 = Power unit communication (Trip)
S11 = Power unit comm. (Measurement)
S12 = Expander board (slot D or E)
S30-S48 = OPT-AF board (slot B)
DC-link voltage is under the voltage
limits defined in Table 9.
- most probable cause: too low a
supply voltage
- frequency converter internal fault
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.
Subcode in T.14:
S1 = Phase supervision diode supply
S2 = Phase supervision active front end
- no brake resistor installed
- brake resistor is broken
- brake chopper failure
Heatsink temperature is under –10 °C.
vacon • 139
Correcting measures
Reset the fault and restart.
Should the fault re-occur,
contact your local distributor.
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 your local distributor.
Check supply voltage, fuses
and cable.
Check brake resistor and
cabling.
If ok, the chopper is faulty.
Contact your local distributor.
9