
Maintenance and Inspection
Symptom
Cause
Conditions
Remedy
Abnormal noise .
Mechanical mounting incorrect
Check whether Servo-
motor mounting
screws are loose.
Tighten the mounting screws.
Check whether cou-
piing is misaligned.
Align the coupling,
Check whether the
coupling is unbal-
anced.
Balance the coupling.
Bearing defective
Check noise and vibra-
tion near the bearing.
Contact your Yaskawa representative.
Equipment causing vibrations
Check the movable
parts for foreign mat-
ter, damage or de-
formation.
Consult with the equipment manufac-
turer.
12.2.2 SERVOPACKS
12
12 -12