Yaskawa Sigma-5 User Manual: Design and Maintenance - Linear Motors - Manual (Page 266)

8.1 Troubleshooting
8-15
8
T
roubleshooting
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.
A.C22:
Phase Information
Disagreement
The SERVOPACK phase data
does not match that of the linear
scale.
− Execute polarity detection (Fn080).
Alarm:
Alarm Name
Cause Investigative Actions Corrective Actions