12.3 Warning Displays
12.3.2 Troubleshooting Warnings
12-53
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.941:
Change of Parame-
ters Requires
Restart
Parameters have
been changed
that require the
power supply to
be turned OFF
and ON again.
–
Turn the power supply to
the SERVOPACK OFF and
ON again.
–
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
SERVOPACK.
–
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 speed ripple com-
pensation). However,
changing the setting may
increase the speed ripple.
page 8-60
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 6-13
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.
–
Continued on next page.
Continued from previous page.
Warning Number:
Warning Name
Possible Cause Confirmation Correction Reference
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