CHAPTER 7 MAINTENANCE AND INSPECTION

The servo motor has operated

briefly and stopped.

Check if an alarm is raised or not.

No alarm is raised.

Check if the brake is released.

The brake is released.

There is a mechanical abnormality.

Not abnormal

Contact us.

An alarm is raised.

Check the cause by referring to section 7.3.

The brake is not released.

(1) Check the brake power.

(2) Check the brake ON/OFF sequence.

Abnormal

(1) Check the machine for the stroke end or

mechanical slip, etc.

The motor issues unpleasant

noise.

Check if the motor is oscillating or not.

Not oscillating

Check if the brake is released.

The brake is released.

Check the wiring of power to the servomotor.

Not abnormal

Check the wiring of the encoder cables.

Not abnormal

There is a mechanical abnormality.

Not abnormal

Contact us.

Oscillating

Reduce the PA1_15 (auto tuning gain 1)

value.

The brake is not released.

(1) Check the brake power.

(2) Check the brake ON/OFF sequence.

Abnormal

Abnormal

Abnormal

(1) Check the wiring of U/V/W.

(2) Check if the wiring is connected to a

wrong motor or not.

(1) Check the encoder cables.

(2) Check if the wiring is connected to a

wrong motor or not.

(1) Check the machine for the stroke end or

mechanical slip, etc.

7

Troubleshooting 7-21