YASKAWA SGMJV User Manual page 326

Warning Num-
ber: Warning Cause
Name
• For 100 VAC
SERVOPACKs:
The AC power sup-
ply voltage is 60 V
or less.
• For 200-VAC
SERVOPACKs:
The AC power sup-
ply voltage is 140 V
or less.
• For 400-VAC
SERVOPACKs:
The AC power sup-
ply voltage is 280 V
A.971:
or less.
Undervoltage
The power supply
voltage dropped
during operation.
Occurrence of instan-
taneous power inter-
ruption.
The SERVOPACK
fuse is blown out.
A SERVOPACK fault
occurred.
A.9A0:
When the servomotor
Overtravel power is ON, over-
travel status is
(Overtravel status
detected.
is detected.)
Investigative Actions
Measure the power supply voltage.
Measure the power supply voltage.
Measure the power supply voltage.
−
−
Check the input signal monitor
(Un005) to check the status of the
overtravel signals.
9.2 Warning Displays
(cont'd)
Corrective Actions
Set the power supply voltage within
the specified range.
Increase the power supply capacity.
When the instantaneous power cut
hold time (Pn509) is set, decrease
the setting.
Replace the SERVOPACK and con-
nect a reactor to the SERVOPACK.
The SERVOPACK may be faulty.
Replace the SERVOPACK.
Refer to 9.4 Troubleshooting Mal-
function Based on Operation and
Conditions of the Servomotor. Even
if overtravel signals were not shown
by the input signal monitor (Un005),
momentary overtravel may have
been detected. Take the following
precautions.
• Do not specify movements that
would cause overtravel from the
host controller.
• Check the wiring of the overtravel
signals.
• Take countermeasures for noise.
9
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