YASKAWA SGD7S-R70A Product Manual page 175

Alarm Number:
Possible Cause
Alarm Name
The delay between
activation of the
/HWBB1 and
A.Eb1:
/HWBB2 input sig-
Safety Function
nals for the HWBB
Signal Input Tim-
was ten second or
ing Error
longer.
A failure occurred in
the SERVOPACK.
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.)
A.EF9:
An alarm occurred in
the INDEXER.
INDEXER Alarm
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.)
Confirmation
The output signal circuits
or devices for /HWBB1
and /HWBB2 or the SER-
VOPACK input signal cir-
Measure the time delay cuits may be faulty.
between the /HWBB1 Alternatively, the input sig-
and /HWBB2 signals. nal cables may be discon-
nected. Check to see if
any of these items are
faulty or have been dis-
connected.
Replace the SERVO-
–
PACK.
Turn the power supply to
the SERVOPACK OFF and
ON again. If an alarm still
–
occurs, the SERVOPACK
may be faulty. Replace the
SERVOPACK.
Use the SigmaWin+ to
Use the correction for the
identify the INDEXER
INDEXER alarm.
alarm.
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.
8.1 Alarm Displays
8.1.2 Troubleshooting Alarms
Continued from previous page.
Correction Reference
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–
–
page 8-38
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–
*1
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*1
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