Alarm List
Alarm Number (4000 to 4999)
Alarm List-919
other If the alarm occurs again, save the CMOS.BIN in maintenance mode,
and then contact your Yaskawa representative about occurrence
status (operating procedure).
4920 M-SAF CONTACTOR
SELF CHECK ERR
The meaning of each sub
code is as follows:
CPU1 1:SFRON1
CPU1 2:SFRON2
CPU1 3:SFRON3
CPU1 4:SFRON4
CPU2 1:SFRON1
CPU2 2:SFRON2
CPU2 3:SFRON3
CPU2 4:SFRON4
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
∙ YPU-CN607
∙ Cable continuity between YSF22 board and YPU unit.
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.
YPU unit failure (1)Reset the alarm.
(2)If the alarm occurs again, replace the YPU unit.
In a system where a plurality of YPU units are connected, replace the
unit, which is connected to the unit on which the alarm occurred.
Other If the alarm occurs again, save the CMOS.BIN in maintenance mode,
and then contact your Yaskawa representative about occurrence
status (operating procedure).
Alarm
Number
Alarm Name
Sub
Code
Meaning Cause Remedy
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