11-11
11-4 Troubleshooting
OMNUC G5-SERIES AC SERVOMOTOR AND SERVO DRIVE USER'S MANUAL
11
Error and Maintenance
15
Driver overheat
Occurs during operation.
• The ambient
temperature is too
high.
• The load is too large.
• Lower the ambient
temperature.
• Increase the capacity
of the driver and motor.
• Reduce the load.
• Extend the acceleration/
deceleration times.
16
Overload
Occurs when the servo is
turned ON.
• There is an error in the
motor wiring (the wiring or
the connections are faulty).
• Wire the motor power
cable correctly.
• The electromagnetic
brake is ON.
• Turn OFF the brake.
• The Servo Drive is faulty.
• Replace the driver.
Occurs during operation.
• The effective torque
exceeds the rated torque.
• The initial torque exceeds
the maximum torque.
• Review the load conditions
and operating conditions.
• Review the motor
capacity.
• Unusual noise or
vibration is caused by
faulty gain adjustment.
• Adjust the gain
correctly.
• The Servo Drive is faulty.
• Replace the driver.
18
Regeneration overload
Occurs when the motor is
decelerating.
• Load inertia is too
large.
• Calculate the regenerative
energy and connect an
External Regeneration Resistor
with the required regeneration
absorption capacity.
• Extend the deceleration time.
• The deceleration time
is too short.
• The motor rotation
speed is too high.
• Reduce the motor
rotation speed.
• Extend the deceleration time.
• Calculate the regenerative
energy and connect an
External Regeneration
Resistor with the required
regeneration absorption
capacity.
• The operating limit of the
External Regeneration
Resistor is limited to 10% duty.
• Set Pn016 to 2.
For details, refer to
"Parameters Details".
Occurs during descent
(vertical axis).
• Gravitational torque is
too large.
• Add a counterbalance
to the machine to lower
gravitational torque.
• Reduce the descent speed.
• Calculate the regenerative
energy and connect an
External Regeneration
Resistor with the required
regeneration absorption
capacity.
• The operating limit of the
External Regeneration
Resistor is limited to 10% duty.
• Set Pn016 to 2.
For details, refer to
"Parameters Details".
Alarm
display
Error conditions
Status when error
occurs
Cause
Measures