Table of Contents
Advertisement
12.3 Warning Displays
12.3.2 Troubleshooting Warnings
Warning Number:
Warning Name
A.971:
Undervoltage
A.9A0:
Overtravel (Over-
travel status was
detected.)
A.9B0:
Preventative Mainte-
nance Warning
12-50
Possible Cause
Confirmation
For a 200-V SER-
VOPACK, the AC
Measure the power
power supply volt-
supply voltage.
age dropped
below 140 V.
The power supply
Measure the power
voltage dropped
supply voltage.
during operation.
A momentary
Measure the power
power interrup-
supply voltage.
tion occurred.
The SERVOPACK
–
fuse is blown out.
A failure occurred
in the SERVO-
–
PACK.
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
Set the power supply volt-
age within the specified
range.
Increase the power supply
capacity.
If you have changed the
setting of Pn509 (Momen-
tary Power Interruption Hold
Time), decrease the setting.
Replace the SERVOPACK
and connect a reactor.
The SERVOPACK may be
faulty. Replace the SERVO-
PACK.
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 6-12
page 4-18
–
–
–
Advertisement
Table of Contents
Troubleshooting
