YASKAWA SGMSV - Page 314

9.1 Alarm Displays
9-15
9
Troubleshooting
A.8A3:
External Encoder
Error of Position
(Absolute)
An external absolute encoder
fault occurred.
−
The external absolute encoder may
be faulty. Refer to the encoder man-
ufacturer’s instruction manual for
corrective actions.
A.8A5:
External Encoder
Overspeed
The overspeed from the external
encoder occurred.
Check the maximum speed of the
external encoder.
Keep the external encoder below its
maximum speed.
A.8A6:
External Encoder
Overheated
The overheat from the external
encoder occurred.
− Replace the external encoder.
A.b31:
Current Detection
Error 1
The current detection circuit for
phase U is faulty.
−
Turn the power supply to the SER-
VOPACK OFF and ON again. If the
alarm still occurs, the SERVO-
PACK may be faulty. Replace the
SERVOPACK.
A.b32:
Current Detection
Error 2
The current detection circuit for
phase V is faulty.
−
Turn the power supply to the SER-
VOPACK OFF and ON again. If the
alarm still occurs, the SERVO-
PACK may be faulty. Replace the
SERVOPACK.
A.b33:
Current Detection
Error 3
The detection circuit for the cur-
rent is faulty.
−
Turn the power supply to the SER-
VOPACK OFF and ON again. If the
alarm still occurs, the SERVO-
PACK may be faulty. Replace the
SERVOPACK.
The servomotor main circuit
cable is disconnected.
Check for disconnection of the ser-
vomotor main circuit cable.
Correct the servomotor wiring.
A.b6A:
MECHATROLINK
Communications ASIC
Error 1
SERVOPACK MECHA-
TROLINK communication sec-
tion fault.
−
Turn the power supply to the SER-
VOPACK OFF and ON again. If the
alarm still occurs, the SERVO-
PACK may be faulty. Replace the
SERVOPACK.
A.b6b:
MECHATROLINK
Communications ASIC
Error 2
MECHATROLINK data recep-
tion error occurred due to noise
interference.
−
Take measures against noise. Check
the MECHATROLINK communi-
cations cable and FG wiring and
take measures such as adding ferrite
core on the MECHATROLINK
communications cable.
SERVOPACK MECHA-
TROLINK communication sec-
tion fault.
−
Turn the power supply to the SER-
VOPACK OFF and ON again. If the
alarm still occurs, the SERVO-
PACK may be faulty. Replace the
SERVOPACK.
A.bE0:
Firmware Error
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.bF0:
System Alarm 0
A SERVOPACK fault occurred. −
T
urn the power supply to the SER-
VOPACK OFF and ON again. If the
alarm sti
ll occurs, the SERVO-
PACK may be faulty. Replace the
SERVOPACK.
A.bF1:
System Alarm 1
A SERVOPACK fault occurred. −
Turn the power supply to the SER-
VOPACK OFF and ON again. If the
alarm still occurs, the SERVO-
PACK may be faulty. Replace the
SERVOPACK.
(cont’d)
Alarm Number:
Alarm Name
Cause Investigative Actions Corrective Actions