Yaskawa Sigma II Indexer - Manual (Page 174)

Sigma II Indexer User’s Manual Troubleshooting Problems with No Alarm Display
9-3
Servomotor over-
heated
Ambient temperature too high
Measure servomotor ambient
temperature. Reduce ambient temperature to
40ºC maximum.
Servomotor surface dirty Visual check
Clean dust and oil from motor
surface.
Overloaded Run under no load.
Reduce load or replace with
larger capacity servomotor.
Abnormal noise
Incorrect mechanical mount-
ing
Servomotor mounting screws
loose?
Tighten mounting screws.
Coupling not centered? Center coupling.
Coupling unbalanced? Balance coupling.
Bearing defective
Check noise and vibration near
bearing. Consult your Yaskawa represen-
tative if defective.
Machine causing vibrations
Foreign object intrusion, dam-
age, or deformation of sliding
parts of machine.
Consult with machine manufac-
turer.
Symptom Cause Comment Solution