Possible Solutions and Notes

• Replace the motor for testing purposes.
• Check cable connections.
• Detach the motor from the shaft or belt and test at different speeds.
• Check or replace the drive.
• Perform insulation testing on the motor.
• Visually inspect the motor.
• Visually inspect the encoder area for dirt, optionally have it cleaned by a specialized facility.
• Check encoder signals: For older motors with analog encoders, read sinusoidal diagrams with an oscilloscope.
  For serial encoders, also check operating voltages.

If these measures do not help, the problem is usually due to a faulty encoder or worn bearings.

For additional error messages, refer to the alarm list available for download at the end of the form.

Possible Solutions and Notes

• Detach the motor from the shaft or belt and test at different speeds.
• Disconnect motor connection cables and completely relieve the motor of loads. Then rotate it by hand.
  If the motor is still stiff or making unusual noises, the bearings may be defective.
• Check motor for insulation and windings for breakdown.
• Check encoder.

For additional error messages, refer to the alarm list available for download at the end of the form.

Possible Solutions and Notes

• Visually inspect the encoder area for dirt, possibly have it cleaned by a specialized facility.
• Check encoder signals: For older motors with analog encoders, read sinusoidal diagrams with an oscilloscope.
  For serial encoders, also check operating voltages.
• Replace encoder.

For additional error messages, refer to the alarm list available for download at the end of the form.