Alarm List
Alarm Number (4000 to 4999)
Alarm List-891
YSF24 board failure (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.
Other If the alarm occurs again, save the CMOS.BIN in maintenance mode,
and then contact your Yaskawa representative about occurrence
status (operating procedure).
4769 M-SAF CONTACTOR
DIAG. ERROR
An error is detected by CPU1
on YSF21 board in self
diagnosis process of contactor
output signal.
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 YPUxx 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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