YASKAWA E-7S SERVOPACK SGD7S Product Manual page 552

Alarm Number:
Possible Cause
Alarm Name
A.EC8:
Gate Drive Error 1
(An error
occurred in the
gate drive circuit.) A failure occurred in
the SERVOPACK.
A.EC9:
Gate Drive Error 2
(An error
occurred in the
gate drive circuit.)
Processing of the
servo ON command
from the command
A.Ed1:
option module is not
Command Option
completed.
Module IF Com-
Processing of the
mand Timeout
sensor ON command
Error
from the command
option module is not
completed.
The three-phase
power supply wiring is
not correct.
The three-phase
power supply is
A.F10:
unbalanced.
Power Supply
Line Open Phase
A single-phase power
(The voltage was
supply was input with-
low for more than
out specifying a sin-
one second for
gle-phase AC power
phase R, S, or T
supply input (Pn00B =
when the main
n.1).
power supply
was ON.)
A failure occurred in
the SERVOPACK.
A.F50:
A failure occurred in
Servomotor Main
the SERVOPACK.
Circuit Cable Dis-
connection
(The Servomotor
did not operate or
power was not
The wiring is not cor-
supplied to the
rect or there is a faulty
Servomotor even
contact in the motor
though the /S-ON
wiring.
signal was input
when the Servo-
motor was ready
to receive it.)
Confirmation
–
Turn the power supply to
the SERVOPACK OFF and
ON again. If an alarm still
occurs, the SERVOPACK
may be faulty. Replace the
SERVOPACK.
–
Input a servo ON com-
– mand when the motor is
stopped.
Check that the encoder is
–
connected properly.
Check the power sup- Make sure that the power
ply wiring. supply is correctly wired.
Measure the voltage for
each phase of the Balance the power sup-
three-phase power sup- ply by changing phases.
ply.
Check the power sup-
Match the parameter set-
ply and the parameter
ting to the power supply.
setting.
Turn the power supply to
the SERVOPACK OFF and
ON again. If an alarm still
–
occurs, the SERVOPACK
may be faulty. Replace the
SERVOPACK.
The SERVOPACK may be
– faulty. Replace the SER-
VOPACK.
Make sure that the Servo-
Check the wiring.
motor is correctly wired.
15.2 Alarm Displays
15.2.2 Troubleshooting Alarms
Continued from previous page.
Correction Reference
–
–
–
–
page 4-12
–
page 4-12
–
–
page 4-26
Continued on next page.
15
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