9 Troubleshooting
9-22
Servomotor Overheated Ambient temperature is too
high.
Measure servomotor ambient
temperature.
Reduce ambient temperature to
40°C max.
Servomotor surface is 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 Mechanical mounting is
incorrect.
Check servomotor mounting
screws.
Tighten mounting screws.
Check couplings not centered. Center coupling.
Check coupling balance. Balance coupling.
Bearing is defective. Check noise and vibration near
bearing.
Consult your Yaskawa repre-
sentative if defective.
Machine causing vibrations.
Check foreign object intru-
sion, damage or deformation of
movable parts of machine.
Consult with machine manu-
facturer.
Table 9.1 Troubleshooting Table with No Alarm Display (cont’d)
Symptom Cause Inspection Remedy
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