YASKAWA DX200 Maintenance Manual page 1112

Alarm Name
Alarm Sub
Number
Code
4769 M-SAF CONTACTOR
DIAG. ERROR
Meaning Cause
YSF24 board failure
Other
An error is detected by CPU1 Connection failure
on YSF21 board in self
diagnosis process of contactor
output signal.
YSF21 board failure
YSF22 board failure
YPU unit failure
Other
Remedy
(1)Reset the alarm.
(2)If the alarm occurs again, replace the YSF24 board.
In a system where a plurality of YSF24 boards are connected, replace
the board on which the alarm occurred.
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-CN217
∙
YPU-CN607
∙
Cable continuity between YSF22 board and YPU unit.
(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 YPU unit.
In a system where a plurality of YPUxx units are connected, replace
the unit, which is connected to the unit on which the alarm occurred.
If the alarm occurs again, save the CMOS.BIN in maintenance mode,
and then contact your Yaskawa representative about occurrence
status (operating procedure).