8 Troubleshooting
8.1.2 Troubleshooting of Alarms
8-14
A.b33:
Current Detection
Error 3
(Current detector)
The detection circuit for the cur-
rent is faulty.
−
Turn the power supply OFF and
then ON again. If the alarm still
occurs, the SERVOPACK may be
faulty. Replace the SERVOPACK.
The linear servomotor main cir-
cuit cable is disconnected.
Check for disconnection of the lin-
ear servomotor main circuit cable.
Correct the linear servomotor wir-
ing.
A.bF0:
System Alarm 0
A SERVOPACK fault occurred.
−
Turn the power supply OFF and
then ON again. If the alarm still
occurs, the SERVOPACK may be
faulty. Replace the SERVOPACK.
A.bF1:
System Alarm 1
A SERVOPACK fault occurred.
−
Turn the power supply OFF and
then ON again. If the alarm still
occurs, the SERVOPACK may be
faulty. Replace the SERVOPACK.
A.bF2:
System Alarm 2
A SERVOPACK fault occurred.
−
Turn the power supply OFF and
then ON again. If the alarm still
occurs, the SERVOPACK may be
faulty. Replace the SERVOPACK.
A.bF3
:
System Alarm 3
A SERVOPACK fault occurred.
−
Turn the power supply OFF and
then ON again. If the alarm still
occurs, the SERVOPACK may be
faulty. Replace the SERVOPACK.
A.bF4:
System Alarm 4
A SERVOPACK fault occurred.
−
Turn the power supply OFF and
then ON again. If the alarm still
occurs, the SERVOPACK may be
faulty. Replace the SERVOPACK.
A.C10:
Servo Overrun
Detected
(Detected when the ser-
vomotor power is ON.)
The order of phases U, V, and W
in the linear servomotor wiring is
incorrect.
Check the linear servomotor wiring. Confirm that the linear servomotor
is correctly wired.
The setting of the motor phase
selection (Pn080.1) is incorrect.
Check the setting of Pn080.1.
Correct the setting of Pn080.1.
A linear scale fault occurred.
−
If the alarm still occurs after turning
the power OFF and then ON again,
even though the linear servomotor
is correctly wired, the linear servo-
motor may be faulty. Replace the
linear servomotor.
A SERVOPACK fault occurred.
−
Turn the power supply OFF and
then ON again. If the alarm still
occurs, the SERVOPACK may be
faulty. Replace the SERVOPACK.
A.C20:
Phase Detection Error
The linear scale signal is weak.
Check the voltage of the linear scale
signal.
Fine-adjust the installation status of
the linear scale head, or replace the
linear scale.
The count-up direction of the lin-
ear scale does not match the for-
ward direction of the motor
moving coil.
Check the setting of Pn080.1
(Motor Phase Selection).
Check the installation directions for
the linear scale and motor moving
coil.
Change the setting of Pn080.1
(Motor Phase Selection).
Correctly reinstall the linear scale
and motor moving coil.
The hall sensor signal is affected
by noise.
−
Correct the FG wiring and take
measures against noise for the hall
sensor wiring.
A.C21:
Hall Sensor Error
The hall sensor is protruding
from the motor magnetic way.
Check the hall sensor.
Correctly reinstall the motor mov-
ing coil or motor magnetic way.
The setting of the linear scale
pitch (Pn282) is incorrect.
Check the setting of the linear scale
pitch (Pn282).
Correct the value of Pn282.
The hall sensor wiring is incor-
rect.
Check the hall sensor wiring.
Correct the hall sensor wiring.
A hall sensor fault occurred.
−
Replace the hall sensor.
Alarm:
Alarm Name
Cause
Investigative Actions
Corrective Actions