Possible solutions and notes

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

If these measures do not help, the error is usually due to a faulty encoder or worn-out ball bearings.

Further error messages can be found in the alarm list available for download at the end of the form.

Possible solutions and notes

• Remove the motor from the shaft or belt and test at different speeds.
• Disconnect the motor connection cable and completely free the motor from loads. Then turn it by hand.
  If the motor is still stiff or makes unusual noises, the ball bearings may be defective.
• Check the motor for insulation and windings for short circuits.
• Check the encoder.

Further error messages can be found in the alarm list available for download at the end of the form.

Possible solutions and notes

• Visually inspect the encoder area for dirt, have it cleaned by a specialized company if necessary.
• Check encoder signals: For older motors with analog encoders, read the sine diagrams with an oscilloscope.
  For serial encoders, also check the operating voltages.
• Have the encoder replaced

Further error messages can be found in the alarm list available for download at the end of the form.