Danfoss VACON 20 Cold Plate Drive

Danfoss VACON 20 Cold Plate Drive Fault Codes:

Fault Code and MeaningCause and Remedy
1

Overcurrent
Cause: Frequency converter has detected too high a current (>4*In) in the motor cable:

  • sudden heavy load increase

  • short circuit in motor cables

  • unsuitable motor




Remedy:

  • Check loading.

  • Check motor size.

  • Check cables.
2

Overvoltage
Cause: The DC-link voltage has exceeded the internal safety limit:

  • deceleration time is too short

  • high overvoltage peaks in mains




Remedy:

  • Increase the deceleration time (Par.4.3 or Par.4.6).
3

Earth fault
Cause: Current measurement has detected extra leakage current at start:

  • insulation failure in cables or motor




Remedy:

  • Check motor cables and motor.
8

System fault
Cause:

  • component failure

  • faulty operation




Remedy:

  • Reset the fault and restart.

  • If the fault re-occurs, contact the distributor near to you.

  • NOTE! If fault F8 occurs, find out the subcode of the fault from the Fault History menu under Id xxx!
9

Under voltage
Cause: The DC-link voltage has gone below the internal safety limit. Most probable cause: supply voltage is too low; frequency converter internal fault; Power outages.



Remedy:

  • 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.
10

Input phase fault
Cause: Input phase is missing.



Remedy:

  • Check supply voltage, fuses and cable.
11

Output phase fault
Cause: Current measurement has detected that there is no current in one motor phase.



Remedy:

  • Check motor cable and motor.
13

Frequency converter under temperature
Cause: Heat sink temperature is under -10 °C.



Remedy:

  • Check the ambient temperature.
14

Frequency converter over temperature
Cause: Heat sink is overheated.



Remedy:

  • Check that the cooling air flow is not blocked.

  • Check the ambient temperature.

  • Clean the heatsink dust.

  • Make sure that the switching frequency is not too high in relation to ambient temperature and motor load.
15

Motor stalled
Cause: Motor stall protection has tripped.



Remedy:

  • Check that the motor is able to rotate freely.
16

Motor over temperature
Cause: Motor overheating has been detected by frequency converter motor temperature model. Motor is overloaded.



Remedy:

  • Decrease the motor load.

  • If no motor overload exists, check the temperature model parameters.
17

Motor underload
Cause: Motor underload protection has tripped.



Remedy:

  • Check motor and load, e.g. for broken belts or dry pumps.
22

EEPROM checksum fault
Cause: Parameter save fault:

  • faulty operation

  • component failure




Remedy:

  • Contact the distributor near to you.
25

Microcontroller watchdog fault
Cause:

  • faulty operation

  • component failure




Remedy:

  • Reset the fault and restart.

  • If the fault re-occurs, contact the distributor near to you.
27

Back EMF protection
Cause: Drive has detected that the magnetized motor is running in start situation.

  • A rotating PM-motor




Remedy:

  • Make sure that there is no rotating PM-motor when the start command is given.
29

Thermistor fault
Cause: The thermistor input of option board has detected increase of the motor temperature.



Remedy:

  • Check motor cooling and loading.

  • Check thermistor connection (If thermistor input of the option board is not in use it has to be short circuited).
34

Internal bus communication
Cause: Ambient interference or defective hardware.



Remedy:

  • If the fault re-occurs, contact the distributor near to you.
35

Application fault
Cause: Application is not working properly.



Remedy:

  • Contact the distributor near to you.
41

IGBT Overtemperature
Cause: Overtemperature alarm is issued when the IGBT switch temperature exceeds 110 °C.



Remedy:

  • Check loading.

  • Check motor size.

  • Make identification run.
50

Analog input select 20% – 100%
Cause: Current at the analogue input is < 4mA; Voltage at the analogue input is < 2 V.

  • control cable is broken or loose.

  • signal source has failed.




Remedy:

  • Check the current loop circuitry.
51

External fault
Cause: Digital input fault. Digital input has been programmed as external fault input and this input is active.



Remedy:

  • Remove the external device fault.
52

Door Panel fault
Cause: Control place is keypad, but door panel has been disconnected.



Remedy:

  • Check the connection between optional board and API.

  • If connection is correct, contact the nearest Vacon distributor.
53

Fieldbus fault
Cause: The data connection between the fieldbus Master and the fieldbus of the drive has broken.



Remedy:

  • Check installation.

  • If installation is correct, contact the nearest Vacon distributor.
54

Slot fault
Cause: The connection between optional board and API has been broken.



Remedy:

  • Check board and slot.

  • Contact the nearest Vacon distributor.
55

Wrong run fault (FWD/REV conflict)
Cause: Run forward and backward are high at the same time.



Remedy:

  • Check I/O control signal 1 and I/O control signal 2.
57

Identification fault
Cause: Identification run has failed.



Remedy:

  • Run command was removed before completion of identification run.

  • Motor is not connected to frequency converter.

  • There is load on motor shaft.
111

Temperature fault
Cause: Over low or over high temperature.



Remedy:

  • Check temperature signal from OPTBH board.