YASKAWA Sigma-V Series User Manual page 372

10 Troubleshooting
10.1.2 Troubleshooting of Alarms
Alarm Number:
Alarm Name
(Alarm Description)
A.8A5:
External Encoder
Overspeed
A.8A6:
External Encoder
Overheated
A.b10:
Speed Reference A/D
Error
(Detected when the
servo is ON.)
A.b11:
Speed Reference A/D
Data Error
A.b20:
Reference Torque In-
put Read
Error
(Detected when the
servo is ON.)
A.b31:
Current Detection
Error 1
A.b32:
Current Detection
Error 2
A.b33:
Current Detection
Error 3
A.bF0:
System Alarm 0
A.bF1:
System Alarm 1
A.bF2:
System Alarm 2
:
A.bF3
System Alarm 3
10-16
Cause
The overspeed from the external
encoder occurred.
The overheat from the external
encoder occurred.
A malfunction occurred in the
speed reference input section.
A fault occurred in the SERVO-
PACK.
A malfunction occurred in the
speed reference input section.
A fault occurred in the SERVO-
PACK.
A malfunction occurred in the
reading section of the torque ref-
erence input.
A fault occurred in the SERVO-
PACK.
The current detection circuit for
phase U is faulty.
The current detection circuit for
phase V is faulty.
The detection circuit for the cur-
rent is faulty.
The servomotor main circuit
cable is disconnected.
A fault occurred in the SERVO-
PACK.
A fault occurred in the SERVO-
PACK.
A fault occurred in the SERVO-
PACK.
A fault occurred in the SERVO-
PACK.
Investigative Actions
Check the maximum speed of the
external encoder.
−
−
−
−
−
−
−
−
−
−
Check for disconnection of the ser-
vomotor main circuit cable.
−
−
−
−
(cont'd)
Corrective Actions
Keep the external encoder below its
maximum speed.
Replace the external encoder.
Clear and reset the alarm and restart
the operation.
Turn the power supply OFF and
then ON again. If the alarm still
occurs, the SERVOPACK may be
faulty. Replace the SERVOPACK.
Clear and reset the alarm and restart
the operation.
Turn the power supply OFF and
then ON again. If the alarm still
occurs, the SERVOPACK may be
faulty. Replace the SERVOPACK.
Clear and reset the alarm and restart
the operation.
Turn the power supply OFF and
then ON again. If the alarm still
occurs, the SERVOPACK may be
faulty. Replace the SERVOPACK.
Turn the power supply OFF and
then ON again. If the alarm still
occurs, the SERVOPACK may be
faulty. Replace the SERVOPACK.
Turn the power supply OFF and
then ON again. If the alarm still
occurs, the SERVOPACK may be
faulty. Replace the SERVOPACK.
Turn the power supply OFF and
then ON again. If the alarm still
occurs, the SERVOPACK may be
faulty. Replace the SERVOPACK.
Correct the servomotor wiring.
Turn the power supply OFF and
then ON again. If the alarm still
occurs, the SERVOPACK may be
faulty. Replace the SERVOPACK.
Turn the power supply OFF and
then ON again. If the alarm still
occurs, the SERVOPACK may be
faulty. Replace the SERVOPACK.
Turn the power supply OFF and
then ON again. If the alarm still
occurs, the SERVOPACK may be
faulty. Replace the SERVOPACK.
Turn the power supply OFF and
then ON again. If the alarm still
occurs, the SERVOPACK may be
faulty. Replace the SERVOPACK.