Omron R88D-KN series User Manual page 395

Symptom
The Linear Motor or the
load generates abnormal
noise or vibration.
G5 Series AC Servo Drives With Built-in EtherCAT Communications, Linear Motor Type
Probable cause
Vibration occurs due to
improper mechanical
installation.
Vibration occurs due to low
mechanical rigidity.
Vibration occurs due to
machine resonance.
There is a problem with the
linear guides.
The gain is wrong.
The Speed Feedback Filter
Time Constant 1 (3103 hex)
is wrong.
The Force Command Filter
Time Constant 1 (3104 hex)
does not match the load.
12 Troubleshooting and Maintenance
Items to check
Check to see if the Linear
Motor's mounting screws are
loose.
Check the load for eccentricity.
Check to see if the coupling
with the load is unbalanced.
Check to see if the vibration
frequency is 100 Hz or lower.
Check to see if the resonance
frequency is high or low.
Check for noise or vibration
around the linear guides.

Check the set value of object
3103 hex. Normally set 0.
Review the set value of object
3104 hex.
Measures
Retighten the mounting screws.
Eliminate the eccentricity.
Balance the operation.
If the frequency is 100 Hz or
lower, set the correct damping
frequency for the damping filter
to eliminate the vibration.
If the resonance frequency is
high, set the adaptive filter to
eliminate the resonance.
Alternatively, measure the
resonance frequency and set
Notch Filter 1 and 2.
Check to see if the linear
guides are mounted properly,
and adjust them if necessary.
Check if manual tuning can
achieve proper adjustment.
Return the setting to the default
value of 0. Alternatively, set a
large value and operate the
motor.
Set a larger value for object
3104 hex to eliminate the
vibration.
12-25
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