Vacon NX ACTIVE FRONT END II Applications Manual page 86

86 • Vacon
F22 EEPROM checksum fault
Possible cause:
1. Parameter save fault
2. Faulty operation
3. Component failure
Correcting measures:
1. Should the fault re-occur, contact your local distributor.
F24 Counter fault
Possible cause:
1. Values displayed on counters are incorrect
Correcting measures:
1. Have a critical attitude towards values shown on counters.
F25 Microprosessor watchdog fault
Possible cause:
1. Start-up of the drive has been prevented.
2. Run request is ON when a new application is loaded to the drive.
Correcting measures:
1. Reset the fault and restart.
2. Should the fault re-occur, contact your local distributor.
F26 Start-Up prevention
Possible cause:
1. Start-up of the drive has been prevented.
2. Run request is ON when a new application is loaded to drive
Correcting measures:
1. Cancel prevention of start-up if this can be done safely.
2. Remove Run Request.
F29 Thermistor fault
The thermistor input of the option board has detected too high a motor temperature.
Possible cause:
1. Motor is overheated.
2. Thermistor cable is broken.
Correcting measures:
1. Check motor cooling and load
2. Check thermistor connection(If thermistor input of the option board is not in use it has to
be short circuited).
Local contacts: http://drives.danfoss.com/danfoss-drives/local-contacts/
arfiff05 Standard AFE-II