8-14
8-3 Troubleshooting
8
Troubleshooting
The Servomotor
is overheating.
The ambient temperature
is too high.
Check that the ambient tempera-
ture around the Servomotor is be-
low 40°C.
Lower the ambient tempera-
ture to 40°C or less. (Use a
cooler or fan.)
Ventilation is obstructed. Check to see whether anything is
blocking ventilation.
Improve ventilation.
The Servomotor is
overloaded.
Try rotating the Servomotor without
a load. (Disconnect it from the me-
chanical system.)
• Reduce the load.
• Replace the Servomotor
and Servo Drive with a Ser-
vomotor and Servo Drive
with higher capacities.
The Servomotor is rotating
with vibration.
The holding
brake is ineffec-
tive.
Power is supplied to the
holding brake.
Check whether power is supplied to
the holding brake.
Configure a circuit that cuts
power to the holding brake
when the motor stops and
the load is held by the hold-
ing brake.
The Servomotor
doesn’t stop or is
hard to stop even
if the RUN
Command Input
(RUN) is turned
OFF while the
Servomotor is ro-
tating.
The load inertia is too
large.
Check the following:
• Is the load too large?
• Is the Servomotor speed too
high?
Re-evaluate the load condi-
tions and replace the Servo-
motor/Servo Drive with an
appropriate model if neces-
sary.
The stop circuit failed. --- Replace the Servo Drive.
Symptom Probable cause Items to check Countermeasures