YASKAWA DX200 Maintenance Manual page 1113

Alarm Name
Alarm Sub
Number
Code
4770 M-SAF STO DIAG.
ERROR
4771 M-SAF GENERAL
OUTPUT DIAG.
ERROR
Meaning Cause
The meaning of each sub Connection failure
code is as follows:
CPU1 1:STO1
CPU1 2:STO2
CPU1 3:STO3
CPU1 4:STO4
CPU2 1:STO1
CPU2 2:STO2
CPU2 3:STO3
CPU2 4:STO4
YSF21 board failure
YSF22 board failure
EAXA21 board failure
Other
The meaning of each sub Connection failure
code is as follows:
CPU1 1:GSOUT1
CPU1 2:GSOUT2
CPU2 1:GSOUT1
CPU2 2:GSOUT2
YSF21 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.
∙
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.
∙
YFC22
∙
Cable continuity between YSF22 board and YFC22 board.
(1)Reset the alarm.
(2)If the alarm occurs again, replace the YSF21 board.