Danfoss VACON 20X Drive

Danfoss VACON 20X Drive Fault Codes:

Fault Code and MeaningCause and Remedy
F1

Overcurrent
Cause:

AC drive has detected too high a current (>4*IH) in the motor cable:

  • sudden heavy load increase

  • short circuit in motor cables

  • unsuitable motor




Remedy:


  • Check loading.

  • Check motor.

  • Check cables and connections.

  • Make identification run.

  • Check ramp times.
F2

Overvoltage
Cause:

The DC-link voltage has exceeded the limits defined.

  • too short a deceleration time

  • brake chopper is disabled

  • high overvoltage spikes in supply

  • Start/Stop sequence too fast




Remedy:


  • Make deceleration time longer.

  • Use brake chopper or brake resistor (available as options).

  • Activate overvoltage controller.

  • Check input voltage.
F3

Earth fault
Cause:

Current measurement has detected that the sum of motor phase current is not zero.

  • insulation failure in cables or motor




Remedy:

Check motor cables and motor.
F8 (Subcode 84)

System Fault
Cause:

MPI communication crc error



Remedy:

Reset the fault and restart. Should the fault re-occur, contact the distributor near to you.
F8 (Subcode 89)

System Fault
Cause:

HMI receives buffer overflow



Remedy:

Check PC-drive cable. Try to reduce ambient noise.
F8 (Subcode 90)

System Fault
Cause:

Modbus receives buffer overflow



Remedy:


  • Check Modbus specifications for time-out.

  • Check cable length.

  • Reduce ambient noise.

  • Check baudrate.
F8 (Subcode 93)

System Fault
Cause:

Power identification error



Remedy:

Try to reduce ambient noise. Reset the fault and restart. Should the fault re-occur, contact the distributor near to you.
F8 (Subcode 97)

System Fault
Cause:

MPI off line error



Remedy:

Reset the fault and restart. Should the fault re-occur, contact the distributor near to you.
F8 (Subcode 98)

System Fault
Cause:

MPI driver error



Remedy:

Reset the fault and restart. Should the fault re-occur, contact the distributor near to you.
F8 (Subcode 99)

System Fault
Cause:

Option board driver error



Remedy:

Check contact in option board slot. Try to reduce ambient noise; Reset the fault and restart. Should the fault re-occur, contact the distributor near to you.
F8 (Subcode 100)

System Fault
Cause:

Option board configuration error



Remedy:

Check contact in option board slot. Try to reduce ambient noise; Should the fault re-occur, contact the distributor near to you.
F8 (Subcode 101)

System Fault
Cause:

Modbus buffer overflow



Remedy:


  • Check Modbus specifications for time-out.

  • Check cable length.

  • Reduce ambient noise.

  • Check baudrate.
F8 (Subcode 104)

System Fault
Cause:

Option board channel full



Remedy:

Check contacts in option board slot. Try to reduce ambient noise. Should the fault re-occur, contact the distributor near to you.
F8 (Subcode 105)

System Fault
Cause:

Option board memory allocation fail



Remedy:

Check contacts in option board slot. Try to reduce ambient noise. Should the fault re-occur, contact the distributor near to you.
F8 (Subcode 106)

System Fault
Cause:

Option board Object queue full



Remedy:

Check contacts in option board slot. Try to reduce ambient noise. Should the fault re-occur, contact the distributor near to you.
F8 (Subcode 107)

System Fault
Cause:

Option board HMI queue full



Remedy:

Check contacts in option board slot. Try to reduce ambient noise. Should the fault re-occur, contact the distributor near to you.
F8 (Subcode 108)

System Fault
Cause:

Option board SPI queue full



Remedy:

Check contacts in option board slot. Try to reduce ambient noise. Should the fault re-occur, contact the distributor near to you.
F8 (Subcode 111)

System Fault
Cause:

Parameter copy error



Remedy:

Check if parameter set is compatible with drive. Do not remove Keypad until copy is finished.
F8 (Subcode 113)

System Fault
Cause:

Frequency detective timer overflow



Remedy:

Check keypad contacts. Try to reduce ambient noise. Should the fault re-occur, contact the distributor near to you.
F8 (Subcode 114)

System Fault
Cause:

PC control time out fault



Remedy:

Do not close VACON® Live when PC control is active. Check PC-Drive cable. Try to reduce ambient noise.
F8 (Subcode 115)

System Fault
Cause:

DeviceProperty data format



Remedy:

Reset the fault and restart. Should the fault re-occur, contact the distributor near to you.
F8 (Subcode 120)

System Fault
Cause:

Task stack overflow



Remedy:

Reset the fault and restart. Should the fault re-occur, contact the distributor near to you.
F9

Undervoltage
Cause:

DC-link voltage is under the voltage limits defined.

  • most probable cause: too low a supply voltage

  • AC drive internal fault

  • defect input fuse

  • external charge switch not closed



NOTE! This fault is activated only if the drive is in Run state.



Remedy:

In case of temporary supply voltage break reset the fault and restart the AC drive. Check the supply voltage. If it is adequate, an internal failure has occurred. Contact the distributor near to you.
F10

Input phase
Cause:

Input line phase is missing.



Remedy:

Check supply voltage, fuses and cable.
F11

Output phase
Cause:

Current measurement has detected that there is no current in one motor phase.



Remedy:

Check motor cables and motor.
F13

AC drive undertemperature
Cause:

Too low temperature measured in power unit’s heatsink or board. Heatsink temperature is under -10°C.



Remedy:

Check the ambient temperature.
F14

AC drive overtemperature
Cause:

Too high temperature measured in power unit’s heatsink or board. Heatsink temperature is over 100°C.



Remedy:


  • 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.
F15

Motor stalled
Cause:

Motor is stalled.



Remedy:

Check motor and load. Insufficient motor power, check motor stall protection parametrization.
F16

Motor overtemperature
Cause:

Motor is overloaded.



Remedy:

Decrease motor load. If no motor overload exists, check the temperature model parameters.
F17

Motor underload
Cause:

Motor is under loaded



Remedy:

Check load. Check underload protection parametrization.
F19

Power overload
Cause:

Supervision for drive power



Remedy:

Drive power is too high: decrease load.
F25

Watchdog
Cause:

Error in the microprocessor monitoring. Malfunction. Component fault.



Remedy:

Reset the fault and restart. If the fault occurs again, please contact your closest VACON® representative.
F27

Back EMF
Cause:

Protection of unit when starting with rotating motor



Remedy:

Reset the fault and restart. Should the fault re-occur, contact the distributor near to you.
F30

STO fault
Cause:

Safe torque off signal does not allow drive to be set as ready



Remedy:

Reset the fault and restart. Should the fault re-occur, contact the distributor near to you.
F35 (Subcode 0)

Application error
Cause:

Firmware Interface version between Application and Control not matching



Remedy:

Load a compatible application. Please contact your closest VACON® representative.
F35 (Subcode 1)

Application error
Cause:

Application software flash error



Remedy:

Reload Application.
F35 (Subcode 2)

Application error
Cause:

Application header error



Remedy:

Load a compatible application. Please contact your closest VACON® representative.
F41

IGBT temp
Cause:

IGBT temperature (UnitTemperature + I2T) too high



Remedy:


  • Check loading.

  • Check motor size.

  • Make identification run.
F50

4 mA fault (Analog input)
Cause:

Selected signal range: 4…20 mA (see Application Manual). Current less than 4 mA. Signal line broken/detached. The signal source is faulty.



Remedy:

Check the analog input’s current source and circuit.
F51

External fault
Cause:

Error message on digital input. The digital input was programmed as an input for external error messages. The input is active.



Remedy:

Check the programming and check the device indicated by the error message. Check the cabling for the respective device as well.
F52

Keypad Communication fault
Cause:

The connection between the control keypad and the AC drive is broken.



Remedy:

Check keypad connection and keypad cable.
F53

Fieldbus communication fault
Cause:

The data connection between the fieldbus master and fieldbus board is broken.



Remedy:

Check installation and fieldbus master.
F54

Fieldbus Interface error
Cause:

Defective option board or slot



Remedy:

Check board and slot.
F55

Wrong run command
Cause:

Wrong run alarm and stop command. Run forward and backward are activated at the same time.



Remedy:

Run forward and backward are activated at the same time
F56

Temperature
Cause:

Temperature fault. Board OPTBH is installed and measured temperature is above (or below) the limit.



Remedy:

Board OPTBH is installed and measured temperature is above (or below) the limit
F57

Identification
Cause:

Identification alarm. Motor identification has not been successfully completed.



Remedy:

Motor identification has not been successfully completed
F63

Quick Stop
Cause:

Quick Stop activated.



Remedy:

The drive has been stopped with Quick Stop digital input or Quick Stop command by fieldbus.