SEW 8215863.10

Common Fault Codes

F01

Overcurrent fault: The output current has exceeded the permissible peak current limit, indicating a possible short circuit, motor winding fault, or excessive load.
Check motor wiring for short circuits or ground faults. Verify motor parameters are correctly programmed. Inspect the motor windings with an insulation resistance tester. Reduce acceleration ramps if load inertia is high.

F02

Overvoltage fault on the DC link: The DC bus voltage has exceeded the maximum permissible level, typically caused by regenerative energy during deceleration that cannot be dissipated.
Check the braking resistor connection and resistance value. Extend deceleration ramps to reduce regenerative energy. Verify supply voltage is within specification. Inspect the brake chopper module for faults.

F03

Undervoltage fault on the DC link: The DC bus voltage has dropped below the minimum threshold, indicating a supply voltage interruption or supply module fault.
Check the incoming supply voltage at the supply module. Inspect fuses and contactors in the supply circuit. Verify that the supply module is functioning correctly and that the DC bus connections are secure.

F05

Motor overtemperature: The motor thermal model or PTC/KTY sensor has detected that the motor temperature has exceeded the permissible limit.
Allow the motor to cool before restarting. Check motor ventilation and ambient temperature. Verify that the thermal sensor wiring is intact. Reduce duty cycle or select a motor with higher thermal rating if overheating recurs.

F07

Encoder or feedback system fault: A signal error has been detected on the encoder or resolver interface, which may indicate wiring faults, connector issues, or a defective feedback device.
Inspect encoder cable shielding and connector integrity. Verify encoder supply voltage. Check for electromagnetic interference sources near the feedback cable. Replace the encoder or resolver if signal quality cannot be restored.

F10

Communication timeout fault: The fieldbus communication between the MOVIAXIS module and the master controller has been interrupted or has exceeded the watchdog timeout period.
Check fieldbus cable connections and termination resistors. Verify master controller is transmitting cyclic data within the configured watchdog time. Review network topology for cable faults or excessive bus load.

F15

Power section overtemperature: The heatsink or power module temperature has exceeded the permissible limit, typically due to insufficient cooling, blocked airflow, or excessive ambient temperature.
Check that cooling fans are operational and airflow is not obstructed. Verify ambient temperature is within specification. Reduce output current or duty cycle. Clean heatsink fins if contaminated.

F20

Safe Torque Off (STO) activation: The STO safety input has been triggered, disabling the drive output. This may be an intentional safety function activation or an unintended wiring fault.
Verify that the STO input signal is correctly applied and that the safety circuit is in the expected state. Check STO wiring for open circuits or incorrect voltage levels. Reset the fault after confirming safe conditions are met.