YASKAWA SGD7S series Product Manual page 189

9.1 Alarm Displays
9.1.2 Troubleshooting Alarms
Alarm Number:
Alarm Name
A.E71:
Safety Option
Module Detec-
tion Failure
A.E72:
Feedback Option
Module Detec-
tion Failure
A.E74:
Unsupported
Safety Option
Module
A.Eb1:
Safety Function
Signal Input Tim-
ing Error
A.EC8:
Gate Drive Error 1
(An error
occurred in the
gate drive circuit.) A failure occurred in
A.EC9:
Gate Drive Error 2
(An error
occurred in the
gate drive circuit.)
9-36
Possible Cause
There is a faulty con- Check the connection
nection between the between the SERVO-
SERVOPACK and the PACK and the Safety
Safety Option Module. Option Module.
The Safety Option
Module was discon- –
nected.
A failure occurred in
the Safety Option –
Module.
A failure occurred in
–
the SERVOPACK.
There is a faulty con-
Check the connection
nection between the
between the SERVO-
SERVOPACK and the
PACK and the Feed-
Feedback Option
back Option Module.
Module.
The Feedback Option
Module was discon- –
nected.
A failure occurred in
the Feedback Option –
Module.
A failure occurred in
–
the SERVOPACK.
A failure occurred in
the Safety Option –
Module.
An unsupported Refer to the catalog of
Safety Option Module the connected Safety
was connected. Option Module.
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.
–
the SERVOPACK.
Confirmation
Correctly connect the
Safety Option Module.
Execute Fn014 (Reset
Option Module Configura-
tion Error) from the Digital
Operator or SigmaWin+
and then turn the power
supply to the SERVO-
PACK OFF and ON again.
Replace the Safety Option
Module.
Replace the SERVO-
PACK.
Correctly connect the
Feedback 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.
Connect a compatible
Safety Option Module.
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.
Continued from previous page.
Correction Reference
–
*1
–
–
–
*1
–
–
–
–
–
–
–
Continued on next page.