YASKAWA FS100 Maintenance Manual page 315

Alarm Alarm Name Sub
Number Code
4836 OVERRUN SIGNAL
ERROR (OT1)
4837 OVERRUN SIGNEAL
ERROR (OT2)
4838 OVERRUN DETECT
Meaning Cause
Hardware failure
Machine safety board failure
Sub Code: Control group Enable signal unmatched
error
Connection failure
Hardware failure
Machine safety board failure
Sub Code: Control group Enable signal unmatched
error
Connection failure
Hardware failure
Machine safety board failure
Sub Code: Control group Overrun limit switch released
Remedy
(1)Reset the alarm.
(2)If the alarm occurs again, execute the following operation.
·Replacement of the switch used for protection stop signal or the corresponding
parts.
(1)Reset the alarm.
(2)If the alarm occurs again, save the CMOS.BIN in maintenance mode, and
then contact your YASKAWA representative about occurrence status (operating
procedure).
(1)Reset the alarm.
(2)If the alarm occurs again, confirm the followings.
·Select "OVERRUN & S-SENSOR"from "ROBOT" menu to display OVERRUN
& S-SENSOR window. The alarm can be released on this window.
(1)Reset the alarm.
(2)If the alarm occurs again, execute the following operation.
·Replacement of the connection cable
(1)Reset the alarm.
(2)If the alarm occurs after the replacement of the machine safety module,
execute the following operation.
·Replacement of the limit switch or corresponding parts.
(1)Reset the alarm.
(2)If the alarm occurs again, save the CMOS.BIN in maintenance mode, and
then contact your YASKAWA representative about occurrence status (operating
procedure).
(1)Reset the alarm.
(2)If the alarm occurs again, confirm the followings.
·Select "OVERRUN & S-SENSOR"from "ROBOT" menu to display OVERRUN
& S-SENSOR window. The alarm can be released on this window.
(1)Reset the alarm.
(2)If the alarm occurs again, confirm the following.
·Replacement of the connection cable
(1)Reset the alarm.
(2)If the alarm occurs after the replacement of the machine safety module,
execute the following operation.
·Replacement of the limit switch or corresponding parts.
(1)Reset the alarm.
(2)If the alarm occurs again, save the CMOS.BIN in maintenance mode, and
then contact your YASKAWA representative about occurrence status (operating
procedure).
(1)Reset the alarm.
(2)If the alarm occurs again, confirm the followings.
·Select "OVERRUN & S-SENSOR"from "ROBOT" menu to display OVERRUN
& S-SENSOR window. The alarm can be released on this window.
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