YASKAWA SGD7S-****20A Series Product Manual page 447

12.2 Alarm Displays
12.2.2 Troubleshooting Alarms
Alarm Number:
Alarm Name
A.8A5:
External Encoder
Overspeed
A.8A6:
External Encoder
Overheated
A.b33:
Current Detec-
tion Error 3
A.b6A:
MECHATROLINK
Communications
ASIC Error 1
A.b6b:
MECHATROLINK
Communications
ASIC Error 2
A.bF0:
System Alarm 0
A.bF1:
System Alarm 1
A.bF2:
System Alarm 2
A.bF3:
System Alarm 3
12-28
Possible Cause
An overspeed error Check the maximum
was detected in the speed of the external
external encoder. encoder.
An overheating error
was detected in the –
external encoder.
A failure occurred in
the current detection –
circuit.
There is a fault in the
SERVOPACK
MECHATROLINK –
communications sec-
tion.
A malfunction
occurred in the
MECHATROLINK –
communications sec-
tion due to noise.
There is a fault in the
SERVOPACK
MECHATROLINK –
communications sec-
tion.
A failure occurred in
–
the SERVOPACK.
A failure occurred in
–
the SERVOPACK.
A failure occurred in
–
the SERVOPACK.
A failure occurred in
–
the SERVOPACK.
Confirmation
Keep the external
encoder below its maxi-
mum speed.
Replace the external
encoder.
Turn the power supply to
the SERVOPACK OFF and
ON again. If an alarm still
occurs, the SERVOPACK
may be faulty. Replace the
SERVOPACK.
Turn the power supply to
the SERVOPACK OFF and
ON again. If an alarm still
occurs, the SERVOPACK
may be faulty. Replace the
SERVOPACK.
Implement the following
countermeasures against
noise.
• Check the MECHA-
TROLINK Communica-
tions Cable and FG
wiring.
• Attach a ferrite core to
the MECHATROLINK
Communications Cable.
Turn the power supply to
the SERVOPACK OFF and
ON again. If an alarm still
occurs, the SERVOPACK
may be faulty. Replace the
SERVOPACK.
Turn the power supply to
the SERVOPACK OFF and
ON again. If an alarm still
occurs, the SERVOPACK
may be faulty. Replace the
SERVOPACK.
Turn the power supply to
the SERVOPACK OFF and
ON again. If an alarm still
occurs, the SERVOPACK
may be faulty. Replace the
SERVOPACK.
Turn the power supply to
the SERVOPACK OFF and
ON again. If an alarm still
occurs, the SERVOPACK
may be faulty. Replace the
SERVOPACK.
Turn the power supply to
the SERVOPACK OFF and
ON again. If an alarm still
occurs, the SERVOPACK
may be faulty. Replace the
SERVOPACK.
Continued from previous page.
Correction Reference
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Continued on next page.