YASKAWA SGD7S-R70A20A023F40B, Product Manual

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5.1 FT40 Specification
5.1.3 Troubleshooting Alarms
5-37
5
Maintenance
A.Ed1:
Command Exe-
cution Timeout
A timeout error
occurred for a
MECHATROLINK
command.
Check the motor status
when the command is
executed.
Execute the SV_ON or
SENS_ON command only
when the motor is not
operating.
–
•
For fully-closed loop
control, check the
status of the external
encoder when the
command is exe-
cuted.
•
For other types of
control, check the
status of the linear
encoder when the
command is exe-
cuted.
Execute the SENS_ON
command only when an
external rotary encoder or
linear encoder is con-
nected.
–
A.F10:
Power Supply
Line Open Phase
(The voltage was
low for more than
one second for
phase R, S, or T
when the main
power supply
was ON.)
The three-phase
power supply wiring is
not correct.
Check the power sup-
ply wiring. Make sure that the power
supply is correctly wired.
*1
The three-phase
power supply is
unbalanced.
Measure the voltage for
each phase of the
three-phase power sup-
ply.
Balance the power sup-
ply by changing phases.
–
A single-phase power
supply was input with-
out specifying a sig-
nal-phase AC power
supply input (Pn00B =
n.

1

).
Check the power sup-
ply and the parameter
setting.
Match the parameter set-
ting to the power supply.
*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
SERVOPACK.
–
A.F50:
Servomotor Main
Circuit Cable Dis-
connection
(The Servomotor
did not operate or
power was not
supplied to the
Servomotor even
though the
SV_ON (Servo
ON) command
was input when
the Servomotor
was ready to
receive it.)
A failure occurred in
the SERVOPACK.
–
The SERVOPACK may be
faulty. Replace the SER-
VOPACK.
–
The wiring is not cor-
rect or there is a faulty
contact in the motor
wiring.
Check the wiring.
Make sure that the Servo-
motor is correctly wired.
*1
Continued on next page.
Continued from previous page.
Alarm Number:
Alarm Name
Possible Cause Confirmation Correction Reference