YASKAWA SGM7D-30F Product Manual page 244

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 sig-
one second for
nal-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.)
3.4 Command Option Attachable-type FT82 SERVOPACKs with INDEXER Modules
Confirmation
–
–
–
Check the power sup-
ply wiring.
Measure the voltage for
each phase of the
three-phase power sup-
ply.
Check the power sup-
ply and the parameter
setting.
–
–
Check the wiring.
3.4.3 Troubleshooting Alarms
Continued from previous page.
Correction
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.
Make sure that the power
supply is correctly wired.
Balance the power sup-
ply by changing phases.
Match the parameter set-
ting to the power supply.
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-
motor is correctly wired.
Continued on next page.
Reference
–
–
–
*1
–
*1
–
–
*1
3
3-175