Omron OMNUC G5 User Manual page 506

11-4 Troubleshooting
Symptom
The motor is
producing unusual
noises or the
machine is
vibrating.
(Continued from
previous page)
Vibration is
occurring at the
same frequency as
the power supply.
The position is
misaligned.
(Position
misalignment
occurs without an
alarm being
output.)
11
11-19
Probable cause
The machine and the motor
are resonating.
Inductive noise is occurring. Check whether the driver control
There is an error in the
coupling of the mechanical
system and the Servomotor.
Noise is entering the error
counter reset (ECRST).
The gain is wrong.
The load inertia is large.
OMNUC G5-SERIES AC SERVOMOTOR AND SERVO DRIVE USER'S MANUAL
Items to check
Check whether the machine is
resonating.
signal lines are too long.
Check whether the control signal
lines and power supply lines are not
bound together.
Check whether the coupling of the
mechanical system and the
Servomotor is misaligned.
Check whether the control signal
lines and power supply lines are not
bound together.
−
Inspect the following.
• Is the load too large?
• Is the motor rotation speed too
high?
Measures
• Readjust the torque
command filter time
constant.
• If there is resonance, set
the Notch Filter 1
Frequency (Pn201), Notch
Filter 1 Width (Pn202), and
Notch Filter 1 Depth
(Pn203).
Shorten the control signal
lines.
• Separate control signal
lines from power supply
lines.
• Use a low-impedance
power supply for control
signals.
Correct the coupling between
the mechanical system and
the Servomotor.
Separate the control signal
lines from the power lines or
take other measures against
noise.
Perform manual tuning.
• Adjust the gain.
• Review the load
conditions, and replace the
Servomotor and Servo
Drive with appropriate
models.