YASKAWA SGD7S Product Manual page 481

14.2 Alarm Displays
14.2.2 Troubleshooting Alarms
Alarm Number:
Alarm Name
A.EA0:
Initialization Error
(Communica-
tions initialization
failed between
the SERVOPACK
and the Com-
mand Option
Module.)
A.EA2:
Alarm in Current
Communications
between the
DeviceNet Mod-
ule and SERVO-
PACK 1
A.Eb1:
Safety Function
Signal Input Tim-
ing Error
A.EC8:
Gate Drive Error 1
(An error
occurred in the
gate drive circuit.)
A.EC9:
Gate Drive Error
2
(An error
occurred in the
gate drive cir-
cuit.)
A.Ed1:
Command Option
Module IF Com-
munications
Command Time-
out Error
14-40
Possible Cause
A failure occurred in
the DeviceNet Mod- –
ule.
An error occurred in
communications
between the Devi-
–
ceNet Module and
SERVOPACK during
operation.
The delay between
activation of the
/HWBB1 and Measure the time delay
/HWBB2 input sig- between the /HWBB1
nals for the HWBB and /HWBB2 signals.
was ten second or
longer.
A failure occurred in
–
the SERVOPACK.
A failure occurred in
–
the SERVOPACK.
Processing of a Servo
ON command from
the Command Option –
Module was not com-
pleted.
Processing of a Sen-
sor ON command
from the Command
–
Option Module was
not completed.
Confirmation
Replace the DeviceNet
Module.
Implement noise counter-
measures, such as
improving the frame
ground.
The output signal circuits
or devices for /HWBB1
and /HWBB2 or the SER-
VOPACK input signal cir-
cuits may be faulty.
Alternatively, the input sig-
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.
Input the Servo ON com-
mand when the motor is
stopped.
Check to confirm that the
encoder is connected
properly.
Continued from previous page.
Correction Reference
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Continued on next page.