YASKAWA SGDV-OFB03A - Errors with Pole Sensor Signals Interface

12 Error Lists
12-8
12.5 Errors with Pole Sensor Signals Interface
A.CB0:
Encoder Echo-back
Error
The linear scale wiring and contact
are incorrect.
Check the encoder wiring.
Correct the linear scale
wiring.
Noise interference occurred due to
incorrect linear scale cable specifica-
tions.
-
Use tinned annealed cop-
per twisted pair or
shielded twisted-pair
cable with a core of at
least 0.12 mm².
Noise interference occurred because
the wiring distance for the linear scale
cable is too long.
-
The wiring distance must
be 20 m max.
A.D30:
Position Data Overflow
The multi-turn position data exceeded
+/-32767.
-
Correct the setting
(-32767 to +32767)
Alarm Number: Alarm
Name (Alarm
Description)
Cause Investigative Actions Corrective Actions
Alarm Number: Alarm
Name (Alarm
Description)
Cause Investigative Actions Corrective Actions
A.840:
Encoder Data Error
An encoder fault occurred
Turn the power supply
OFF and then ON again.
If the alarm still occurs,
the servomotor may be
faulty. Replace the servo-
motor.
Malfunction of encoder because of
noise interference, etc.
-
Correct the wiring around
the encoder by separating
the encoder cable from the
servomotor main circuit
cable or by checking the
grounding and other wir-
ing.
Note: If the scale file is configured for Hall sensor connectivity, a Hall sensor must be con-
nected. Disabling Hall sensor connectivity (Pn080.0 = 1) and trying to work without the
sensor will cause error A.840.
A.C20:
Phase Detection Error
The linear scale signal is weak.
Check the voltage of the
linear scale signal.
Fine-adjust the installa-
tion status of the linear
scale head, or replace the
linear scale.
The count-up direction of the linear
scale does not match the forward
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 rein-
stall 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:
Pole Sensor Error
A pole sensor fault occurred. - Replace the pole sensor.