YASKAWA SGD7S series Product Manual page 103

Alarm Number:
Possible Cause
Alarm Name
There is a faulty con-
nection between the
SERVOPACK and the
Feedback Option
Module.
A.E72:
The Feedback Option
Feedback Option
Module was discon-
Module Detec-
nected.
tion Failure
A failure occurred in
the Feedback Option
Module.
A failure occurred in
the SERVOPACK.
A failure occurred in
the Safety Option
A.E74:
Module.
Unsupported
Safety Option
An unsupported
Module
Safety Option Module
was connected.
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.)
4.1 SERVOPACKs with Analog Voltage/Pulse Train References
Confirmation
Check the connection
between the SERVO- Correctly connect the
PACK and the Feed- Feedback Option Module.
back Option Module.
Reset the Option Module
configuration error and
– turn the power supply to
the SERVOPACK OFF and
ON again.
Replace the Feedback
–
Option Module.
Replace the SERVO-
–
PACK.
Replace the Safety Option
–
Module.
Refer to the catalog of
Connect a compatible
the connected Safety
Safety Option Module.
Option Module.
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.
4.1.3 Troubleshooting Alarms
Continued from previous page.
Correction Reference
–
*1
–
–
–
–
–
–
–
Continued on next page.
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