YASKAWA DX200 Maintenance Manual page 1109

Alarm Name
Alarm Sub
Number
Code
4764 M-SAF STO FB DIAG.
ERROR
4765 M-SAF BRAKE FB
DIAG. ERROR
Meaning Cause
The meaning of each sub Connection failure
code is as follows:
CPU1 1:EDM1
CPU1 2:EDM2
CPU1 3:EDM3
CPU1 4:EDM4
CPU2 1:EDM1
CPU2 2:EDM2
CPU2 3:EDM3
CPU2 4:EDM4
YSF21 board failure
YSF22 board failure
EAXA21 board failure
Other
Connection failure
YSF21 board failure
YSF22 board failure
Remedy
(1)Reset the alarm.
(2)If the alarm occurs again, check the connection and inserting state
of the following cables and connectors.
∙
EAXA21-CN8/CN/CN10/CN11
∙
YSF22-CN217
∙
Cable continuity between YSF22 board and EAXA21 board.
(1)Reset the alarm.
(2)If the alarm occurs again, replace the YSF21 board.
(1)Reset the alarm.
(2)If the alarm occurs again, replace the YSF22 board.
In a system where a plurality of YSF22 boards are connected, replace
the board on which the alarm occurred.
(1)Reset the alarm.
(2)If the alarm occurs again, replace the EAXA21 board.
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, check the connection and inserting state
of the following cables and connectors.
∙
YSF22-CN214
∙
Cable continuity between YSF22 board and YBK21 board.
(1)Reset the alarm.
(2)If the alarm occurs again, replace the YSF21 board.
(1)Reset the alarm.
(2)If the alarm occurs again, replace the YSF22 board.
In a system where a plurality of YSF22 boards are connected, replace
the board on which the alarm occurred.