8-19
8-3 Troubleshooting
8
Troubleshooting
Vibration is
occurring at the
same frequency
as the power
supply.
Inductive noise is
occurring.
Check whether the Servo Drive
control signal lines are too long.
Shorten the control signal
lines.
Check to see whether control signal
lines and power supply lines are
bundled together.
• Separate control signal
lines from power supply
lines.
• Use a low-impedance
power supply for control
signals.
The position is
misaligned.
(Position
misalignment
occurs without an
alarm being
output.)
There is an error in the
coupling of the mechanical
system and the Servomo-
tor.
Check whether the coupling of the
mechanical system and the Servo-
motor is misaligned.
Correct the coupling
between the mechanical
system and the Servomotor.
Noise is entering the Devia-
tion Counter Reset Input
(ECRST).
Check whether the control signal
lines and power supply lines are
bundled together.
Separate the control signal
lines from the power supply
lines or take other measures
against noise.
The gain is wrong. ---
• Perform normal mode
autotuning.
• Perform manual tuning.
The load inertia is too large.
Check the following:
• Check whether the load is too
large.
• Check whether the rotation
speed of the Servomotor is too
high.
• Adjust the gain.
• Review the load condi-
tions, and replace the
Servomotor and Servo
Drive with appropriate
models.
Symptom Probable cause Items to check Countermeasures
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