Alarm List
Alarm Number (4000 to 4999)
Alarm List-877
Connection failure (1)Reset the alarm.
(2)If the alarm occurs again, check the connection and inserting state
of the following cables and connectors.
∙ Replace the cable of the programming pendant.
∙ YSF22-CN218
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 YSF22 board which is connected to the first 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).
4745 M-SAF EX ENABLE
SW SIG. ERROR
External Enable signal was
unmatched for a certain time.
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
∙ YSF22-YFC22 cable
∙ Check connectors of the connected outside devices of EXTERNAL
ENABLE SWITCH signal line.
Hardware failure (1)Reset the alarm.
(2)If the alarm occurs again, replace the external enable switch.
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 YSF22 board which is connected to the first EAXA21 board.
Alarm
Number
Alarm Name
Sub
Code
Meaning Cause Remedy
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