YASKAWA DX100 Maintenance Manual page 566

Alarm Alarm Name Sub
Number Code
2
3
4
5
Meaning Cause
CPU2 detected an inconsistency Connection failure
of emergency stop signal in robot
controller.
Hardware failure
CPU2 detected an inconsistency Connection failure
of external emergency stop signal.
CPU2 detected an inconsistency Connection failure
of external enable switch signal.
CPU2 detected an inconsistency Connection failure
of safeguarding signal.
Remedy
(1)Reset the alarm.
(2)If the alarm occurs again, check the followings.
·Confirmation of wiring for pin numbers A1, A2, B1, and B2 of YSU unit
(CN208 connector) and emergency stop SW of robot controller
(1)Reset the alarm.
(2)If the alarm occurs again after confirming the connection, execute the
following contents. Save the CMOS.BIN before replacing the YSU unit to be
safe.
·Replacement of the emergency stop button on the robot controller
·Replacement of YSU unit
·Replacement of the emergency stop button on the robot controller and the
cable that connects to the YSU unit
(1)Reset the alarm.
(2)If the alarm occurs again, check the followings.
·Wiring confirmation of YSU unit (CN216 connector) and pin numbers 19, 20,
21, and 22 of MXT terminal block
(1)Reset the alarm.
(2)If the alarm occurs again, check the followings.
·Wiring confirmation of YSU unit (CN216 connector) and pin numbers 33, 34,
35, and 36 of MXT terminal block
(1)Reset the alarm.
(2)If the alarm occurs again, check the followings.
·Wiring confirmation of YSU unit (CN216 connector) and pin numbers 9, 10,
11, and 12 of MXT terminal block