YASKAWA SGD7S series Product Manual page 190

Alarm Number:
Possible Cause
Alarm Name
A timeout error
A.Ed1:
occurred for a
Command Exe-
MECHATROLINK
cution Timeout
command.
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
supplied to the
The wiring is not cor-
Servomotor even
rect or there is a faulty
though the
contact in the motor
SV_ON (Servo
wiring.
ON) command
was input when
the Servomotor
was ready to
receive it.)
Confirmation
Execute the SV_ON or
Check the motor status
SENS_ON command only
when the command is
when the motor is not
executed.
operating.
• For fully-closed loop
control, check the
status of the external
encoder when the
Execute the SENS_ON
command is exe-
command only when an
cuted.
external encoder (e.g., a
• For other types of
linear encoder) is con-
control, check the
nected.
status of the linear
encoder when the
command is exe-
cuted.
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.
9.1 Alarm Displays
9.1.2 Troubleshooting Alarms
Continued from previous page.
Correction Reference
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–
*1
–
*1
–
–
*1
Continued on next page.
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