YASKAWA E-S Series - Page 238

10.1 Alarm and Warning Displays
10.1.3 Troubleshooting Alarms
10-12
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 SER-
VOPACK.
−
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 SER-
VOPACK.
−
A.BF4:
System Alarm 4
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 SER-
VOPACK.
−
A.C10:
Servomotor Out
of Control
(Detected in the
SERVO ON
state.)
The order of phases U,
V, and W in the motor
wiring is not correct.
Check the Servomotor
wiring.
Make sure that the Ser-
vomotor is correctly
wired.
−
A failure occurred in
the encoder.
−
If the motor wiring is
correct and an alarm
still occurs after turning
the power supply OFF
and ON again, the Ser-
vomotor may be faulty.
Replace the Servomo-
tor.
−
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 SER-
VOPACK.
−
Continued on next page.
Continued from previous page.
Alarm Number:
Alarm Name
Possible Cause Confirmation Correction
Reference
for
Correction