YASKAWA SGD7S series Product Manual page 530

12.3 Warning Displays
12.3.2 Troubleshooting Warnings
Warning Number:
Warning Name
A.9A0:
Overtravel (Over-
travel status was
detected.)
A.9b0:
Preventative Mainte-
nance Warning
12-54
Possible Cause Confirmation
Overtravel was Check the status of the
detected while the overtravel signals on
servo was ON. the input signal monitor.
One of the con-
sumable parts has
–
reached the end
of its service life.
Continued from previous page.
Correction
Even if an overtravel signal
is not shown by the input
signal monitor, momentary
overtravel may have been
detected. Take the following
precautions.
• Do not specify move-
ments that would cause
overtravel from the host
controller.
• Check the wiring of the
overtravel signals.
• Implement countermea-
sures against noise.
Replace the part. Contact
your Yaskawa representa-
tive for replacement.
Reference
page 5-34
page 9-17