YASKAWA SGM7D-30F Product Manual page 160

Problem Possible Cause
The Servomotor vibrated
considerably while perform-
ing the tuning-less function
with the default settings.
The machine mounting is not
secure.
Abnormal
Noise from
Servomotor
The machine mounting is not
secure.
The bearings are defective.
There is a vibration source at
the driven machine.
3.2 FT82 SERVOPACK with MECHATROLINK-II Communications References
3.2.7 Troubleshooting Based on the Operation and Conditions of the Servomotor
Confirmation
Check the waveform of
the motor speed.
Check to see if there are
any loose mounting
screws.
Check to see if there is
misalignment in the cou-
pling.
Check to see if the cou-
pling is balanced.
Check for noise and
vibration around the bear-
ings.
Check for any foreign
matter, damage, or defor-
mation in the machine's
moving parts.
Continued from previous page.
Correction Reference
Reduce the load so
that the moment of
inertia ratio or mass
ratio is within the allow-
*
able value, or increase
the load level or reduce
the rigidity level in the
tuning-less level set-
tings.
Tighten the mounting
–
screws.
Align the coupling.
–
Balance the coupling.
–
Replace the Servomo-
–
tor.
Consult with the
–
machine manufacturer.
Continued on next page.
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