YASKAWA E-V Series User Manual page 308

Alarm:
Alarm Name
A.bF3:
A SERVOPACK fault occurred.
System Alarm 3
A.bF4:
A SERVOPACK fault occurred.
System Alarm 4
The order of phases U, V, and W
in the servomotor wiring is incor-
rect.
The setting of the motor phase
selection (Pn080.1) is incorrect.
A.C10:
Servo Overrun
Detected
An encoder fault occurred.
(Detected when the
servo is ON.)
A SERVOPACK fault occurred.
The linear scale signal is weak.
The count-up direction of the lin-
A.C20:
ear scale does not match the for-
ward direction of the motor coil
Phase Detection Error
assembly.
The hall sensor signal is affected
by noise.
The hall sensor is protruding
from the motor magnetic way.
The setting of the linear scale
A.C21:
pitch (Pn282) is incorrect.
Hall Sensor Error
The hall sensor wiring is incor-
rect.
A hall sensor fault occurred.
A.C22:
The SERVOPACK phase data
Phase Information does not match that of the linear
scale.
Disagreement
A.C50:
Parameter settings are incorrect.
Polarity Detection
Error
Cause Investigative Actions
−
−
Check the servomotor wiring.
Check the setting of Pn080.1.
−
−
Check the voltage of the linear scale
signal.
Check the setting of Pn080.1
(Motor Phase Selection).
Check the installation directions for
the linear scale and motor coil
assembly.
−
Check the hall sensor.
Check the setting of the linear scale
pitch (Pn282).
Check the hall sensor wiring.
−
−
Check the linear scale specifications
and feedback signal status.
9.1 Troubleshooting
Corrective Actions
Turn the power supply OFF and
then ON again. If the alarm still
occurs, the SERVOPACK may be
faulty. Repair or replace the SER-
VOPACK.
Turn the power supply OFF and
then ON again. If the alarm still
occurs, the SERVOPACK may be
faulty. Repair or replace the SER-
VOPACK.
Confirm that the servomotor is cor-
rectly wired.
Correct the setting of Pn080.1.
If the alarm still occurs after turning
the power OFF and then ON again,
even though the servomotor is cor-
rectly wired, the servomotor may be
faulty. Repair or replace the servo-
motor.
Turn the power supply OFF and
then ON again. If the alarm still
occurs, the SERVOPACK may be
faulty. Repair or replace the SER-
VOPACK.
Fine-adjust the installation status of
the linear scale head, or replace the
linear scale.
Change the setting of Pn080.1
(Motor Phase Selection).
Correctly reinstall the linear scale
and motor coil assembly.
Correct the FG wiring and take
measures against noise for the hall
sensor wiring.
Correctly reinstall the motor coil
assembly or motor magnetic way.
Correct the value of Pn282.
Correct the hall sensor wiring.
Replace the hall sensor.
Execute polarity detection (Fn080).
The settings of the linear scale pitch
(Pn282) and motor phase selection
(Pn080.1) may not match the actual
product requirements. Set these
parameters to the correct values.
9
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