YASKAWA SGD7S-****20A Series - Page 476

12.3 Warning Displays
12.3.2 Troubleshooting Warnings
12
Maintenance
12-57
A.971:
Undervoltage
For a 200-V
SERVOPACK, the
AC power supply
voltage dropped
below 140 V.
Measure the power
supply voltage.
Set the power supply volt-
age within the specified
range.
–
For a 100-V
SERVOPACK, the
AC power supply
voltage dropped
below 60 V.
Measure the power
supply voltage.
Set the power supply volt-
age within the specified
range.
–
The power supply
voltage dropped
during operation.
Measure the power
supply voltage.
Increase the power supply
capacity.
–
A momentary
power interrup-
tion occurred.
Measure the power
supply voltage.
If you have changed the
setting of Pn509 (Momen-
tary Power Interruption Hold
Time), decrease the setting.
page 6-16
The SERVOPACK
fuse is blown out.
–
Replace the SERVOPACK
and connect a reactor.
page 4-25
A failure occurred
in the SERVO-
PACK.
–
The SERVOPACK may be
faulty. Replace the SERVO-
PACK.
–
A.97A:
Command Warning
7 (Phase Error)
A command that
cannot be exe-
cuted in the cur-
rent phase was
sent.
–
Send the command after
the command conditions
are satisfied.
–
A.97b:
Data Clamp Out of
Range
The set com-
mand data was
clamped to the
minimum or maxi-
mum value of the
setting range.
–
Set the command data
within the setting ranges.
–
A.9A0:
Overtravel (Over-
travel status was
detected.)
Overtravel was
detected while the
servo was ON.
Check the status of the
overtravel signals on
the input signal monitor.
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.
page 5-31
A.9b0:
Preventative Mainte-
nance Warning
One of the con-
sumable parts has
reached the end
of its service life.
–
Replace the part. Contact
your Yaskawa representa-
tive for replacement.
page 9-15
Continued from previous page.
Warning Number:
Warning Name
Possible Cause Confirmation Correction Reference