Danfoss VACON NXP Air Cooled Drive Fault Codes:
| Fault Code and Meaning | Cause and Remedy |
|---|---|
| Fault 1, Subcode S1 Overcurrent – Hardware trip | Cause: There is too high a current in the motor cable. Its cause can be 1 of the following:
Remedy:
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| Fault 1, Subcode S2 Overcurrent – Current cutter supervision (VACON® NXS) | Cause: There is too high a current in the motor cable. Its cause can be 1 of the following:
Remedy:
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| Fault 1, Subcode S3 Overcurrent – Current limit controller supervision | Cause: There is too high a current in the motor cable. Its cause can be 1 of the following:
Remedy:
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| Fault 1, Subcode S4 Overcurrent – Software-based overcurrent fault | Cause: There is too high a current in the motor cable. Its cause can be 1 of the following:
Remedy:
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| Fault 2, Subcode S1 Overvoltage – Hardware trip | Cause: The DC-link voltage is higher than the limits.
Remedy:
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| Fault 2, Subcode S2 Overvoltage – Overvoltage control supervision | Cause: The DC-link voltage is higher than the limits.
Remedy:
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| Fault 2, Subcode S3 Overvoltage – LCL capacitor overvoltage ripple | Cause: AFE LCL filter capacitor ripple voltage is too high. Remedy:
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| Fault 3 Earth fault | Cause: The measurement of current tells that the sum of the motor phase current is not zero.
Remedy:
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| Fault 5 Charging switch | Cause: The charging switch is open, when the START command is given.
Remedy:
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| Fault 6 Emergency stop | Cause: Stop signal has been given from the option board. Remedy:
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| Fault 7 Saturation trip | Cause:
Remedy: This fault cannot be reset from the control panel.
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| Fault 8, Subcode S1 System fault – ASIC phase feedback | Cause:
Remedy:
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| Fault 8, Subcode S4 System fault – ASIC trip | Cause:
Remedy:
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| Fault 8, Subcode S5 System fault – Disturbance in VaconBus | Cause:
Remedy:
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| Fault 8, Subcode S6 System fault – Feedback of charging switch | Cause:
Remedy:
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| Fault 8, Subcode S7 System fault – Charging switch | Cause:
Remedy:
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| Fault 8, Subcode S8 System fault – No power to driver card | Cause:
Remedy:
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| Fault 8, Subcode S9 System fault – Power unit communication (TX) | Cause:
Remedy:
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| Fault 8, Subcode S10 System fault – Power unit communication (Trip) | Cause:
Remedy:
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| Fault 8, Subcode S11 System fault – Power unit comm. (Measurement) | Cause:
Remedy:
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| Fault 8, Subcode S12 System fault – System bus fault (slot D or E) | Cause: Error in system bus option board (OPTD1 or OPTD2) in slot D or E.
Remedy:
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| Fault 8, Subcode S30 System fault – OPTAF: STO channels are different from each other | Cause: The Safe Disable inputs are in different states. It is not allowed according to EN954-1, category 3. This fault occurs when the Safe Disable inputs are in different states for more than 5 s. Remedy:
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| Fault 8, Subcode S31 System fault – OPTAF: Thermistor short circuit detected | Cause: Thermistor short circuit detected. Remedy:
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| Fault 8, Subcode S32 System fault – OPTAF board has been removed | Cause: OPTAF board has been removed. It is not allowed to remove the OPTAF board once the software has recognized it. Remedy:
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| Fault 8, Subcode S33 System fault – OPTAF: EEPROM error | Cause: OPTAF board EEPROM error (checksum, not answering and so on). Remedy:
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| Fault 8, Subcode S34 System fault – OPTAF: Voltage problem | Cause: OPTAF supply voltage hardware problem detected. Remedy:
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| Fault 8, Subcode S35 System fault – OPTAF: Overvoltage | Cause: OPTAF supply voltage hardware problem detected. Remedy:
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| Fault 8, Subcode S36 OPTAF: Undervoltage | Cause: OPTAF supply voltage hardware problem detected. Remedy:
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| Fault 8, Subcode S37 OPTAF: Test pulse is not detected in both STO channels | Cause: Single hardware problem detected in Safe Disable inputs. Remedy:
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| Fault 8, Subcode S38 OPTAF: Test pulse is not detected in STO channel 1 | Cause: Single hardware problem detected in Safe Disable inputs. Remedy:
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| Fault 8, Subcode S39 OPTAF: Test pulse is not detected in STO channel 2 | Cause: Single hardware problem detected in Safe Disable inputs. Remedy:
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| Fault 8, Subcode S40 OPTAF: ASIC trip ETR is not set, even if STO channel 1 is active | Cause: Single hardware problem detected in Safe Disable inputs. Remedy:
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| Fault 8, Subcode S41 OPTAF: STO channels are not active when the thermistor trip is active | Cause: Single hardware problem detected in the thermistor input. Remedy:
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| Fault 8, Subcode S42 OPTAF: Test pulse low is not detected on thermistor | Cause: Single hardware problem detected in the thermistor input. Remedy:
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| Fault 8, Subcode S43 OPTAF: Test pulse high is not detected on thermistor | Cause: Single hardware problem detected in the thermistor input. Remedy:
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| Fault 8, Subcode S44 OPTAF: STO channel 1 is not active, even if the analog input supervision indicates | Cause: Single hardware problem detected in Safe Disable inputs or in the thermistor input. Remedy:
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| Fault 8, Subcode S45 OPTAF: STO channel 2 is not active, even if the analog input supervision indicates | Cause: Single hardware problem detected in Safe Disable inputs or in the thermistor input. Remedy:
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| Fault 8, Subcode S46 OPTAF: Thermistor or analog input is not set, even if STO is active | Cause: Single hardware problem detected in Safe Disable inputs or in the thermistor input. Remedy:
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| Fault 8, Subcode S47 OPTAF: Board mounted in old NXP control board with no safety hardware | Cause: OPTAF board mounted in old VACON® NXP control board, which is not equipped with the Safe Disable function. Remedy:
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| Fault 8, Subcode S48 OPTAF: Mismatch between Therm Trip (HW) parameter and jumper setting | Cause: The parameter Expander boards/ SlotB/ Therm Trip(HW) is set to OFF even though the jumper X12 is not cut. Remedy:
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| Fault 8, Subcode S49 OPTAF: Board mounted in VACON NXS control board | Cause: OPTAF is only compatible with VACON® NXP. Remedy:
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| Fault 8, Subcode S50 OPTAF: Filter discharge resistor fault | Cause: Problem with the control board. Remedy:
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| Fault 8, Subcode S70 False fault activated | Cause: Fault in application. Remedy:
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| Fault 9, Subcode S1 Undervoltage: DC-link too low during run | Cause: The DC-link voltage is lower than the limits. Possible reasons:
Remedy:
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| Fault 9, Subcode S2 Undervoltage: No data from power unit | Cause: The DC-link voltage is lower than the limits. Possible reasons:
Remedy:
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| Fault 9, Subcode S3 Undervoltage: Undervoltage control supervision | Cause: The DC-link voltage is lower than the limits. Possible reasons:
Remedy:
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| Fault 10, Subcode S1 Input line supervision: Phase supervision diode supply | Cause: The input line phase is missing. Remedy:
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| Fault 10, Subcode S2 Input line supervision: Phase supervision active front-end | Cause: Line sync fault. AFE is not able to synchronize to line after five trials. Remedy:
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| Fault 10, Subcode S3 Input line supervision: Phase supervision active front end, Microgrid | Cause: Frequency exceeds the line frequency min/max limits. Underfrequency appears if: DC-link voltage is too low or not enough power in grid. Overfrequency appears if: Overvoltage control activates or too much power generation. Remedy:
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| Fault 11, Subcode S1 Output phase supervision: Common output phase supervision | Cause: The measurement of current tells that there is no current in 1 motor phase. Remedy:
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| Fault 11, Subcode S2 Output phase supervision: Additional closed loop control output phase fault | Cause: The measurement of current tells that there is no current in 1 motor phase. Remedy:
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| Fault 11, Subcode S3 Output phase supervision: Additional open loop control output phase fault during start DC brake | Cause: The measurement of current tells that there is no current in 1 motor phase. Remedy:
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| Fault 11, Subcode S4 Output phase supervision: Additional closed loop output phase fault during PM StartAngleID run | Cause: The measurement of current tells that there is no current in 1 motor phase. Remedy:
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| Fault 12 Brake chopper supervision | Cause:
Remedy:
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| Fault 13 AC drive undertemperature | Cause: Too low a temperature in the heat sink of the power unit or in the power board. The heat sink temperature is below -10 °C (14 °F). Remedy:
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| Fault 14, Subcode S1 AC drive overtemperature: Overtemperature warning in unit, board, or phases | Cause: Overheating detected in AC drive. Heat sink temperature is over 90 °C (194 °F). Alarm issued over 85 °C (185 °F). (Different limits apply for 525–690 V, FR6). Remedy:
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| Fault 14, Subcode S2 AC drive overtemperature: Overtemperature in power board | Cause: Overheating detected in AC drive. Heat sink temperature is over 90 °C (194 °F). Remedy:
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| Fault 14, Subcode S3 AC drive overtemperature – Liquid flow | Cause: Appears when the liquid flow supervision is activated, and problems in cooling liquid flow are detected. Remedy:
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| Fault 14, Subcode S4 AC drive overtemperature on ASIC board or driver boards | Cause: Overheating detected in AC drive. Heat sink temperature is over 90 °C (194 °F). Overtemperature alarm is issued when the heat sink temperature goes over 85 °C (185 °F). In 525–690 V, FR6: Heat sink temperature is over 77 ºC (170.6 °F). Alarm issued over 72 ºC (161.6 °F). Remedy:
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| Fault 15 Motor stalled | Cause: The motor stalled. It is possible to set different responses in the application for this fault. See parameter group Protections. Remedy:
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| Fault 16 Motor overtemperature | Cause: There is too heavy a load on the motor. It is possible to set different responses in the application for this fault. See parameter group Protections. Remedy:
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| Fault 17 Motor underload | Cause: Motor underload protection has tripped. It is possible to set different responses in the application for this fault. See parameter group Protections. Remedy:
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| Fault 18, Subcode S1 Unbalance – Current unbalance | Cause: Unbalance between power modules in paralleled power units. This fault is type A fault (Alarm). Remedy:
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| Fault 18, Subcode S2 Unbalance – DC voltage unbalance | Cause: Unbalance between power modules in paralleled power units. This fault is type A fault (Alarm). Remedy:
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| Fault 19 Current overload | Cause: Motor current overload warning. Remedy:
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| Fault 22, Subcode S1 Parameter fault – Firmware interface power down variable checksum error | Cause:
Remedy:
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| Fault 22, Subcode S2 Parameter fault – Firmware interface variable check sum error | Cause:
Remedy:
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| Fault 22, Subcode S3 Parameter fault – System power down variable check sum error | Cause:
Remedy:
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| Fault 22, Subcode S4 Parameter fault – System parameter checksum error | Cause:
Remedy:
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| Fault 22, Subcode S5 Parameter fault – Application-defined power-down, variable checksum error | Cause: Parameter save fault. Remedy:
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| Fault 22, Subcode S6 Parameter fault – Application-defined power-down, variable check sum | Cause:
Remedy:
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| Fault 22, Subcode S10 Parameter fault – System parameter checksum error | Cause:
Remedy:
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| Fault 22, Subcode S13 Parameter fault – Checksum error in application-specific parameter set | Cause: Parameter save fault. Remedy:
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| Fault 24 Counter fault | Cause: Values that showed on the counters are incorrect. Remedy:
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| Fault 25, Subcode S1 Microprocessor watchdog fault – CPU watchdog timer | Cause:
Remedy:
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| Fault 25, Subcode S2 Microprocessor watchdog fault – ASIC reset | Cause:
Remedy:
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| Fault 26, Subcode S1 Start-up prevented – Prevention of accidental start-up | Cause: Start-up of the drive has been prevented. Run request is ON when new application is downloaded to the drive. Remedy:
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| Fault 26, Subcode S2 Start-up prevented – RUN request is kept active after drive returns to READY | Cause: Start-up of the drive has been prevented. START command is ON when returning to READY state after Safe Disable has been active. Remedy:
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| Fault 26, Subcode S30 Start-up prevented – RUN request given too quickly | Cause: Start-up of the drive has been prevented. START command is ON after system software or application was downloaded, or after application was changed. Remedy:
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| Fault 29, Subcode S1 Thermistor fault – Thermistor input activated on OPTAF board | Cause: The thermistor input of option board has detected increase of the motor temperature. It is possible to set different responses in the application for this fault. Remedy:
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| Fault 29, Subcode S2 Thermistor fault – Special application | Cause: The thermistor input of option board has detected increase of the motor temperature. It is possible to set different responses in the application for this fault. Remedy:
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| Fault 30 Safe disable | Cause: The input on OPTAF board has opened. STO inputs SD1 and SD2 are activated through the OPTAF option board. Remedy:
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| Fault 31 IGBT temperature (hardware) | Cause: IGBT Inverter Bridge overtemperature protection has detected too high a short-term overload current. Remedy:
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| Fault 32 Fan cooling | Cause: Cooling fan of the AC drive does not start, when ON command is given. Remedy:
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| Fault 34 CAN bus communication | Cause: Sent message not acknowledged. Remedy:
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| Fault 35 Application | Cause: Problem in application software. Remedy:
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| Fault 36 Control unit | Cause: The software needs newer version of the control unit. Remedy:
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| Fault 37, Subcode S1 Device changed (same type) – Control board | Cause: A new option board has replaced the old one in the same slot. The parameters are available in the drive. Remedy:
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| Fault 38, Subcode S1 Device added (same type) – Control board | Cause: The option board was added. The same option board has been used in the same slot before. The parameters are available in the drive. Remedy:
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| Fault 39 Device removed | Cause: An option board was removed from the slot. Remedy:
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| Fault 40, Subcode S1 Device unknown | Cause: An unknown or mismatching device was connected (the power unit or option board). Remedy:
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| Fault 40, Subcode S2 Device unknown – StarCoupler: power sub units are not identical | Cause: An unknown or mismatching device was connected (the power unit or option board). Remedy:
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| Fault 40, Subcode S3 Device unknown – StarCoupler is not compatible with the control board | Cause: An unknown or mismatching device was connected (the power unit or option board). Remedy:
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| Fault 40, Subcode S4 Device unknown – Wrong PropertiesType in control board EEPROM | Cause: An unknown or mismatching device was connected (the power unit or option board). Remedy:
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| Fault 40, Subcode S5 Device unknown – Wrong VACON NXP control board EEPROM size detected | Cause: An unknown or mismatching device was connected (the power unit or option board). Remedy:
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| Fault 40, Subcode S6 Device unknown – Old power unit (Asic) and new software mismatch | Cause: An unknown or mismatching device was connected (the power unit or option board). Remedy:
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| Fault 40, Subcode S7 Device unknown – Old ASIC detected | Cause: An unknown or mismatching device was connected (the power unit or option board). Remedy:
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| Fault 41, Subcode S1 IGBT temperature – Calculated IGBT temperature too high | Cause: IGBT Inverter Bridge overtemperature protection has detected too high a short-term overload current. Remedy:
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| Fault 41, Subcode S2 IGBT temperature – AFE current is higher than defined EON current limit during the grid fault | Cause: AFE EON-function current limiter (cutter) has been active longer than 50 ms during the grid fault. Remedy:
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| Fault 41, Subcode S3 IGBT temperature – Calculated IGBT temperature too high (long-term protection) | Cause: IGBT Inverter Bridge overtemperature protection has detected too high a short-term overload current. Remedy:
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| Fault 41, Subcode S4 IGBT temperature – Peak current too high | Cause: IGBT Inverter Bridge overtemperature protection has detected too high a short-term overload current. Remedy:
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| Fault 41, Subcode S5 IGBT temperature – BCU: Filtered current too high for some time | Cause: IGBT Inverter Bridge overtemperature protection has detected too high a short-term overload current. Remedy:
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| Fault 41, Subcode S6 IGBT temperature – BCU: Current momentarily too high | Cause: IGBT Inverter Bridge overtemperature protection has detected too high a short-term overload current. Remedy:
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| Fault 42, Subcode S1 Brake resistor overtemperature – Internal brake chopper overtemperature | Cause: Brake resistor overtemperature protection has detected too heavy braking. Remedy:
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| Fault 42, Subcode S2 Brake resistor overtemperature – Brake resistance too high (BCU) | Cause: Brake resistor overtemperature protection has detected too heavy braking. Remedy:
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| Fault 42, Subcode S3 Brake resistor overtemperature – Brake resistance too low (BCU) | Cause: Brake resistor overtemperature protection has detected too heavy braking. Remedy:
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| Fault 42, Subcode S4 Brake resistor overtemperature – Brake resistance not detected (BCU) | Cause: Brake resistor overtemperature protection has detected too heavy braking. Remedy:
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| Fault 42, Subcode S5 Brake resistor overtemperature – Brake resistance leakage (earth fault) (BCU) | Cause: Brake resistor overtemperature protection has detected too heavy braking. Remedy:
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| Fault 43, Subcode S1 Encoder fault – Encoder 1 channel A is missing | Cause: Problem detected in encoder signals. Encoder channel A is missing. Remedy:
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| Fault 43, Subcode S2 Encoder fault – Encoder 1 channel B is missing | Cause: Problem detected in encoder signals. Encoder channel B is missing. Remedy:
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| Fault 43, Subcode S3 Encoder fault – Both encoder 1 channels are missing | Cause: Problem detected in encoder signals. Encoder channels A and B are missing. Remedy:
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| Fault 43, Subcode S4 Encoder fault – Encoder reversed | Cause: Problem detected in encoder signals. The encoder is reversed. The output frequency has been set to the positive value, but the encoder signal is negative. Remedy:
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| Fault 43, Subcode S5 Encoder fault – Encoder board missing | Cause: The encoder board is missing. Remedy:
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| Fault 43, Subcode S6 Encoder fault – Serial communication fault | Cause: Problem detected in encoder signals. Serial communication fault. The encoder cable is not connected or there are interferences in the cable. Remedy:
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| Fault 43, Subcode S7 Encoder fault – Ch A / Ch B Mismatch | Cause: Problem detected in encoder signals. Encoder channels A and B are mismatched. Remedy:
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| Fault 43, Subcode S8 Encoder fault – Resolver/Motor pole pair mismatch | Cause: Problem detected in parameterization of option board. There is a mismatch of the resolver/motor pole pair number. Remedy:
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| Fault 43, Subcode S9 Encoder fault – Missed Start Angle | Cause: Encoder zero positioning identification run has not been made. The encoder start angle is missing. Remedy:
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| Fault 43, Subcode S10 Encoder fault – Sin/Cos encoder feedback is missing | Cause: Problem detected in encoder signals. For the closed loop control, encoder modes “EnDat only” or “SSI only” (absolute channel only) are not allowed. Remedy:
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| Fault 43, Subcode S11 Encoder fault – Encoder angle is drifting | Cause: Error angle between the angle read from the absolute channel and the angle calculated from the incremental channels. Remedy:
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| Fault 43, Subcode S12 Encoder fault – Dual speed supervision fault | Cause: Encoder speed supervision. The difference between the encoder speed and estimated speed is too large. Remedy:
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| Fault 43, Subcode S13 Encoder fault – Encoder angle supervision fault | Cause: The estimated shaft position error (estimated angle – encoder angle) is more than 90° electrical. Remedy:
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| Fault 43, Subcode S14 Encoder fault – Encoder estimated missing pulse fault, switch from the CL ctrl to the OL sensorl | Cause: Problem detected in encoder signals. Software has detected too many missing pulses in the encoder. Remedy:
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| Fault 44, Subcode S1 Device changed (different type) – Control board | Cause: Option board or power unit changed. New device of different type or different power rating. Remedy:
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| Fault 45, Subcode S1 Device added (different type) – Control board | Cause: Option board of different type added. Remedy:
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| Fault 49 Division by zero in application | Cause: Division by zero has occurred in application program. Remedy:
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| Fault 50 Analogue input Iin < 4 mA (sel. signal range 4 to 20 mA) | Cause: Current at the analog input is < 4 mA. Control cable is broken or loose, or signal source has failed. Remedy:
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| Fault 51 External fault | Cause: Digital input fault. Digital input has been programmed as external fault input and this input is active. Remedy:
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| Fault 52 Keypad communication fault | Cause: The connection between the control panel (or VACON NCDrive) and the drive is defective. Remedy:
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| Fault 53 Fieldbus fault | Cause: The data connection between the fieldbus master and the fieldbus board is defective. Remedy:
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| Fault 54 Slot fault | Cause: Defective option board or slot. Remedy:
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| Fault 56 Measured Temperature | Cause: Shows temperature measurement fault for option board OPTBH or OPTB8. Temperature exceeded set limit, Sensor disconnected, or Short circuit. Remedy:
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| Fault 57 Identification | Cause: Identification run has failed. This fault is type A fault (Alarm). Remedy:
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| Fault 58 Brake | Cause: Actual status of the brake is different from the control signal. It is possible to set different responses in the application for this fault. Remedy:
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| Fault 59 Follower communication | Cause: SystemBus or CAN communication is broken between Master and Follower. Remedy:
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| Fault 60 Cooling | Cause: External cooling has failed. Normally this fault comes from the heat exchanger unit. Remedy:
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| Fault 61 Speed error | Cause: Motor speed is unequal to reference. Remedy:
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| Fault 62 Run disable | Cause: Run enable signal is low. Remedy:
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| Fault 63 Quick stop | Cause: Command for quick stop received from digital input or fieldbus. Remedy:
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| Fault 64 Input switch open | Cause: Drive input switch is open. Remedy:
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| Fault 65 Measured Temperature | Cause: Shows temperature measurement fault for option board OPTBH or OPTB8. Temperature exceeded set limit, Sensor disconnected, or Short circuit. Remedy:
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| Fault 70 Active filter fault | Cause: Fault triggered by digital input. Remedy:
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| Fault 74 Follower fault | Cause: When using normal Master Follower function this fault code is given if one or more follower drives trips to fault. Remedy:
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| Fault 85 Baseline Run | Cause: There was a failure during the baseline run. Remedy:
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| Fault 86, Subcode A1 Condition-based Monitoring – Motor Stator Winding Current Fault | Cause: Current unbalance has exceeded the detection high limit. Remedy:
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| Fault 86, Subcode A2 Condition-based Monitoring – Motor Stator Winding Voltage Fault | Cause: Voltage unbalance has exceeded the detection high limit. Remedy:
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| Fault 86, Subcode A3 Condition-based Monitoring – Motor Stator Winding Current Warning S2 | Cause: Current unbalance has exceeded the detection high limit. Remedy:
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| Fault 86, Subcode A4 Condition-based Monitoring – Motor Stator Winding Voltage Warning S2 | Cause: Voltage unbalance has exceeded the detection high limit. Remedy:
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| Fault 86, Subcode A5 Condition-based Monitoring – Motor Stator Winding Current Warning S1 | Cause: Current unbalance has exceeded the detection high limit. Remedy:
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| Fault 86, Subcode A6 Condition-based Monitoring – Motor Stator Winding Voltage Warning S1 | Cause: Voltage unbalance has exceeded the detection high limit. Remedy:
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| Fault 86, Subcode A7 Condition-based Monitoring – Vibration Fault | Cause: Vibration has exceeded the detection high limit. Remedy:
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| Fault 86, Subcode A8 Condition-based Monitoring – Vibration Warning S2 | Cause: Vibration has exceeded the detection high limit. Remedy:
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| Fault 86, Subcode A9 Condition-based Monitoring – Vibration Warning S1 | Cause: Vibration has exceeded the detection high limit. Remedy:
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| Fault 86, Subcode A10 Condition-based Monitoring – Load Fault | Cause: Load outside of the window limits. Remedy:
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| Fault 86, Subcode A11 Condition-based Monitoring – Load Warning S2 | Cause: Load outside of the window limits. Remedy:
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| Fault 86, Subcode A12 Condition-based Monitoring – Load Warning S1 | Cause: Load outside of the window limits. Remedy:
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