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11-31
11-4 Troubleshooting
OMNUC G5-Series AC Servo Drives Users Manual (Built-in MECHATROLINK-II communications type)
11
Error and Maintenance
The motor is overheating. The ambient temperature is
too high.
Check the ambient
temperature around the motor
is not over 40
C.
• Lower the ambient
temperature around
the motor to 40
C or
less. (Use a fan or air
conditioner.)
• Lower the load rate.
The heat radiation condition
for the motor is
inappropriate.
• Check that the specified
radiation condition is
observed.
• Check the load ratio for the
servomotor with brake.
• Improve the radiation
condition.
• Reduce the load.
• Improve ventilation.
The motor is overloaded.
Measure the torque on the
analog monitor on the front
panel or by the CX-Drive.
• Decrease the
acceleration and
deceleration speed.
• Lower the speed and
check the load.
The motor vibrates during
rotation.
The machine position is
misaligned.
The coupling of the
servomotor axis and the
machine is abnormal.
Check that the coupling of the
servomotor and the machine
is not misaligned.
• Tighten the coupling
again.
• Replace with a coupling
which has no
looseness.
The host controller gives a
deceleration stop command.
Check the control ladder on
the host controller.
Review the control on the
host controller.
The motor does not stop
or is hard to stop even if
the operation command
(RUN) is turned OFF
while the motor is rotating.
The load inertia is too large.
• Check the load inertia.
• Check the motor rotation
speed.
• The dynamic brake
resistance is disconnected.
• Review the load inertia.
• Replace the motor and
drive with appropriate
ones.
The dynamic brake is
disabled.
Check if the dynamic brake is
not disabled or broken.
• Enable, if it is disabled.
• Replace the brake with
a new one, if it is
broken or resistor
disconnection is
detected.
Symptom
Probable cause
Items to check
Measures
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