Alarm List
Alarm Number (4000 to 4999)
Alarm List-920
4921 M-SAF STO SELF
CHECK ERR
The meaning of each sub
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
Connection failure (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.
YSF21 board failure (1)Reset the alarm.
(2)If the alarm occurs again, replace the YSF21 board.
YSF21 board failure (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.
EAXA21 board failure (1)Reset the alarm.
(2)If the alarm occurs again, replace the EAXA21 board.
Other If the alarm occurs again, save the CMOS.BIN in maintenance mode,
and then contact your Yaskawa representative about occurrence
status (operating procedure).
4922 M-SAF GENERAL
OUT SELF CHECK
ERR
The meaning of each sub
code is as follows:
CPU1 1:GSOUT1
CPU1 2:GSOUT2
CPU2 1:GSOUT1
CPU2 2:GSOUT2
Connection failure (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.
YSF21 board failure (1)Reset the alarm.
(2)If the alarm occurs again, replace the YSF21 board.
YSF22 board failure (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.
Alarm
Number
Alarm Name
Sub
Code
Meaning Cause Remedy
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