YASKAWA E-7-Series SGD7S - Page 451

12.2 Alarm Displays
12.2.2 Troubleshooting Alarms
12-28
A.b20:
Torque Refer-
ence A/D Error
(Detected when
the servo is
turned ON.)
A malfunction
occurred in the read-
ing section for the
torque reference
input.
–
Reset the alarm and
restart operation.
page 12-40
A failure occurred in
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 SERVO-
PACK.
–
A.b33:
Current Detec-
tion Error 3
A failure occurred in
the current detection
circuit.
–
Turn the power supply to
the SERVOPACK OFF and
ON again.
If an alarm still occurs, the
SERVOPACK may be
faulty.
Replace the SERVO-
PACK.
–
The Servomotor Main
Circuit Cable is dis-
connected.
Check for a disconnec-
tion in the Servomo-
tor’s Main Circuit
Cables.
Correct the Servomotor
wiring.
–
A.bF0:
System Alarm 0
A failure occurred in
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 SERVO-
PACK.
–
A.bF1:
System Alarm 1
A failure occurred in
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 SERVO-
PACK.
–
A.bF2:
System Alarm 2
A failure occurred in
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 SERVO-
PACK.
–
A.bF3:
System Alarm 3
A failure occurred in
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 SERVO-
PACK.
–
Continued from previous page.
Alarm Number:
Alarm Name
Possible Cause Confirmation Correction
Reference
for Correc-
tion