YASKAWA SGD7S Product Manual page 445

Alarm Number:
Possible Cause
Alarm Name
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.)
A timeout error
A.Ed1:
occurred for a
Command Exe-
MECHATROLINK
cution Timeout
command.
Confirmation
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.
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.
12.2 Alarm Displays
12.2.2 Troubleshooting Alarms
Continued from previous page.
Correction Reference
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Continued on next page.
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