SEW Eurodrive MOVIFIT-FC Inverter

26 fault codes documented

01

Overcurrent in output stage

This fault indicates an overcurrent condition on the inverter output. It is typically caused by a short circuit in the connection between the inverter and the motor, or a short circuit within the motor winding itself. Excessive current flow from the inverter can lead to damage if not addressed.

04

Thermal overload of motor / Overcurrent in brake chopper

This fault can signify one of two issues: either a thermal overload of the motor due to factors like high ambient temperature, inadequate heat dissipation, or excessive mechanical load; or an overcurrent condition within the brake chopper circuitry. Both conditions indicate a risk of component damage.

06

Phase failure

A phase failure has been detected in the supply system. This fault indicates a loss of one or more phases in the input power supply, and it is detectable only when the drive is operating under load. Continued operation with a phase failure can damage the motor or inverter.

07

DC link voltage too high

The DC link voltage has exceeded its permissible limit. Potential causes include a ramp time set too short, incorrect wiring or internal resistance of the brake coil/braking resistor, thermal overload in the braking resistor, or an invalid mains voltage range. High DC link voltage poses a risk to the inverter's components.

08

Speed monitoring

Speed monitoring has been triggered, indicating that the load on the drive is too high, causing the motor speed to deviate beyond acceptable limits. This protective function prevents the motor from operating outside its designed speed range under excessive load.

09

Startup

This fault indicates incorrect startup or parameter settings, potentially configured via MOVITOOLS® MotionStudio. The unit's initial configuration is not valid, preventing proper operation.

11

Thermal overload of the output stage or internal unit error

The output stage of the unit has experienced thermal overload, or an internal error has occurred. This suggests that the operating temperature of the output stage is too high due to ambient conditions, inadequate heat dissipation, or excessive drive load, risking hardware damage.

15

24 V supply

The supply voltages 24V_C and/or 24V_P are too low, falling below the required operating threshold for the unit's electronics. This inadequate voltage supply can lead to unpredictable behavior or complete unit shutdown.

17

CPU fault

An internal CPU fault has occurred within the unit. This indicates a general internal processing error, which might be transient or indicate a more serious hardware issue.

18

CPU fault

An internal CPU fault has occurred within the unit. This indicates a general internal processing error, which might be transient or indicate a more serious hardware issue.

19

CPU fault

An internal CPU fault has occurred within the unit. This indicates a general internal processing error, which might be transient or indicate a more serious hardware issue.

20

CPU fault

An internal CPU fault has occurred within the unit. This indicates a general internal processing error, which might be transient or indicate a more serious hardware issue.

21

CPU fault

An internal CPU fault has occurred within the unit. This indicates a general internal processing error, which might be transient or indicate a more serious hardware issue.

22

CPU fault

An internal CPU fault has occurred within the unit. This indicates a general internal processing error, which might be transient or indicate a more serious hardware issue.

23

CPU fault

An internal CPU fault has occurred within the unit. This indicates a general internal processing error, which might be transient or indicate a more serious hardware issue.

24

CPU fault

An internal CPU fault has occurred within the unit. This indicates a general internal processing error, which might be transient or indicate a more serious hardware issue.

25

EEPROM fault

A fault occurred when accessing the EEPROM, indicating an issue with non-volatile memory read/write operations. This can affect unit parameters and configuration data.

26

External terminal

A low signal was detected on the external terminal that has been programmed with the "/External fault" function. This condition is specific to SBUS slave units and indicates a problem with an external monitoring circuit.

31

TF was triggered

The TF (Thermal Fault) input has been triggered. This indicates that an external thermal protection device, such as a motor thermistor, has detected an over-temperature condition and activated the fault input.

37

CPU fault

An internal CPU fault has occurred within the unit. This indicates a general internal processing error, which might be transient or indicate a more serious hardware issue.

81

Start condition/output open

This fault indicates an issue with the start condition, specifically relevant in hoist operation mode, or an open circuit in the output. It could be due to a phase failure in the motor lead preventing proper startup or operation.

82

Start condition/output open

This fault indicates an issue with an open output or the start condition. It could be due to a phase failure in the motor lead, preventing the drive from operating correctly or detecting its output.

84

Thermal overload of motor

The motor has experienced thermal overload. This can be caused by high ambient temperature, inadequate heat dissipation around the motor, or excessive mechanical load on the motor, leading to its operating temperature exceeding safe limits.

89

Thermal overload of brake coil or brake coil defective / connected incorrectly

The brake coil has experienced thermal overload, is defective, or is connected incorrectly. This can be triggered by a ramp time set too short, an issue identified during brake inspection, or an incorrect combination of the drive (brake coil) and MOVIFIT®-FC frequency inverter. It indicates a problem with the braking system's integrity or control.

90

Output stage detection

This fault indicates an incorrect assignment between the motor and the inverter, or an invalid DIP switch setting. The unit cannot properly detect or configure its output stage, preventing correct motor control.

97

Copy error

An error occurred during data transmission or copying process. This could happen during parameter transfer or other data-intensive operations, indicating corrupted or incomplete data writes.