YASKAWA DX200 Maintenance Manual page 1098

Alarm Name
Alarm Sub
Number
Code
4745 M-SAF EX ENABLE
SW SIG. ERROR
Meaning Cause
Connection failure
YSF21 board failure
YSF22 board failure
Other
External Enable signal was Connection failure
unmatched for a certain time.
Hardware failure
YSF21 board failure
YSF22 board failure
Remedy
(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
(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.
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 EXTERNAL
ENABLE SWITCH signal line.
(1)Reset the alarm.
(2)If the alarm occurs again, replace the external enable switch.
(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.