YASKAWA SGDV-OCA05A

14.3 Warning Displays
14.3.2 Troubleshooting Warnings
14-54
A.93B:
Overheat Warning
The surrounding
temperature is too
high.
Check the surrounding
temperature using a
thermostat.
Lower the surrounding tem-
perature by improving the
installation conditions of the
Linear Servomotor or the
machine.
–
Operation was
performed under
an excessive load.
Use the accumulated
load ratio to check the
load during operation.
Reconsider the load and
operating conditions.
–
A failure occurred
in the SERVO-
PACK.
–
The SERVOPACK may be
faulty. Replace the SERVO-
PACK.
–
The temperature
detection circuit in
the Linear Servo-
motor is faulty or
the sensor
attached to the
machine is faulty.
–
The temperature detection
circuit in the Linear Servo-
motor may be faulty or the
sensor attached to the
machine may be faulty.
Replace the Linear Servo-
motor or repair the sensor
attached to the machine.
–
A.942:
Speed Ripple Com-
pensation Informa-
tion Disagreement
The speed ripple
compensation
information stored
in the encoder
does not agree
with the speed
ripple compensa-
tion information
stored in the SER-
VOPACK.
−
Reset the speed ripple
compensation value on the
SigmaWin+.
page 8-60
−
Set Pn423 to n.1 (Do
not detect A.942 alarms).
However, changing the set-
ting may increase the speed
ripple.
page 8-60
−
Set Pn423 to n.0
(Disable torque ripple com-
pensation). However,
changing the setting may
increase the speed ripple.
page 8-60
A.971:
Undervoltage
For a 200-V SER-
VOPACK, the AC
power supply volt-
age dropped
below 140 V.
Measure the power
supply voltage.
Set the power supply volt-
age within the specified
range.
−
For a 100-V SER-
VOPACK, the AC
power supply volt-
age dropped
below 60 V.
Measure the power
supply voltage.
Set the power supply volt-
age within the specified
range.
−
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 6-5
The SERVOPACK
fuse is blown out.
−
Replace the SERVOPACK
and connect a reactor.
page 4-24
A failure occurred
in the SERVO-
PACK.
−
The SERVOPACK may be
faulty. Replace the SERVO-
PACK.
−
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 on next page.
Continued from previous page.
Warning Number:
Warning Name
Possible Cause Confirmation Correction Reference