YASKAWA UAK series User Manual page 294

11 Inspection, Maintenance, and Troubleshooting
11.3.2 Troubleshooting of Warnings
Warning
Number:
Warning Name
(Warning
Description)
A.980:
Motor
Overheated
A.9A0:
Overtravel
(Overtravel status
is detected.)
11-40
Cause
The ambient tempera-
Check the ambient temperature
ture around the motor is
around the motor.
high.
Acceleration and decel-
−
eration were repeated
frequently.
When the servomotor
Check the status of the overtravel sig-
power is ON, over-
nals using the host controller.
travel status is detected.
Investigative Actions
(cont'd)
Corrective Actions
Make sure the ambient temperature
around the motor does not increase.
Make the acceleration/deceleration of
the motor smoother, or change the
operation pattern.
Refer to 11.5 Troubleshooting Mal-
function Based on Operation and
Conditions of the Motor. Even if over-
travel signals were not shown,
momentary overtravel may have been
detected. Do the following.
• Do not specify movements that
would cause overtravel from the
host controller.
• Check the wiring of the overtravel
signals.
• Take countermeasures for noise.