Vacon NX ACTIVE FRONT END II Applications Manual page 85

Arfiff05 Standard AFE-II
F9 Undervoltage fault
DC-link voltage is below the fault voltage limit of the drive.
S1 = DC-link too low during run
S2 = No data from power unit
S3 = Undervoltage control supervision
Possible cause
1. Too low a supply voltage
2. Frequency converter internal fault
3. One of the input fuses is broken.
4. External charge switch has not been closed.
Correcting measures
1. In case of temporary supply voltage break, reset the fault and restart the frequency
converter.
2. Check supply voltage.
3. Check function of DC charge.
4. Contact your local distributor.
F10 Line Synchronization Fault
S1 = Phase supervision diode supply
S2 = Phase supervision active front end
Possible cause:
1. Input line phase is missing.
Correcting measures
1. Check supply voltage, fuses and cable.
F11 Line phase supervision
Current measurement has detected that there is no current in one phase or one phase current
is considerably different from other phases.
Correcting measures
1. Check cables
F13 Drive under temperature fault
Possible cause:
1. Heatsink temperature is under 10C
F14 Drive over temperature fault
Possible cause:
1.
limit. Overtemperature warning is issued before actual trip limit is reached.
Correcting measures
1. Check correct amount and flow of cooling air.
2. Check the heatsink for dust.
3. Check ambient temperature.
4. Make sure that switching frequency is not too high in relation to ambient temperature and
motor load.
Local contacts: http://drives.danfoss.com/danfoss-drives/local-contacts/
vacon • 85