YASKAWA DX200 Maintenance Manual page 1099

Alarm Name
Alarm Sub
Number
Code
4746 M-SAF SAFETY
FENCE SIG. ERROR
Meaning Cause
YFC22 board failure
Other
Safety fence signal is Connection failure
unmatched for a certain time.
YSF21 board failure
YSF22 board failure
YFC22 board failure
Other
Remedy
(1)Reset the alarm.
(2)If the alarm occurs again, replace the YFC22 board.
In a system where a plurality of YFC22 boards are connected, replace
the board, which is connected to the XIN signal on which the alarm
occurred.
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
∙
YSF22-YFC22 cable
∙
Check connectors of the connected outside devices of SAFETY
FENCE signal line.
(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 YSF22 board which is connected to the first EAXA21 board.
(1)Reset the alarm.
(2)If the alarm occurs again, replace the YFC22 board.
In a system where a plurality of YFC22 boards are connected, replace
the board, which is connected to the XIN signal on which the alarm
occurred.
If the alarm occurs again, save the CMOS.BIN in maintenance mode,
and then contact your Yaskawa representative about occurrence
status (operating procedure).