YASKAWA SGMSV User Manual

9.2 Warning Displays
9-27
9
Troubleshooting
A.971:
Undervoltage
• 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
or less.
Measure the power supply voltage.
Set the power supply voltage within
the specified range.
The power supply
voltage dropped
during operation.
Measure the power supply voltage. Increase the power supply capacity.
Occurrence of instan-
taneous power inter-
ruption.
Measure the power supply voltage.
When the instantaneous power cut
hold time (Pn509) is set, decrease
the setting.
The SERVOPACK
fuse is blown out.
−
Replace the SERVOPACK and con-
nect a reactor to the SERVOPACK.
A SERVOPACK fault
occurred.
−
The SERVOPACK may be faulty.
Replace the SERVOPACK.
A.9A0:
Overtravel
(Overtravel status
is detected.)
When the servomotor
power is ON, over-
travel status is
detected.
Check the input signal monitor
(Un005) to check the status of the
overtravel signals.
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.
(cont’d)
Warning Num-
ber: Warning
Name
Cause Investigative Actions Corrective Actions

YASKAWA SGMSV Specifications

General

Brand	YASKAWA
Model	SGMSV
Category	Servo Drives
Language	English