YASKAWA DX200 Maintenance Manual page 1097

Alarm Name
Alarm Sub
Number
Code
4743 M-SAF EXESP SIG.
ERROR
4744 M-SAF PP ENABLE
SW SIG. ERROR
Meaning Cause
External emergency stop Connection failure
signal was unmatched for a
certain time.
Hardware failure
YSF21 board failure
YSF22 board failure
YFC22 board failure
Other
The enable switch signal of Programing pendant
PP was unmatched for a illegal operation
certain time.
Programming pendant
failure
Remedy
(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
EMERGENCY STOP signal line.
(1)Reset the alarm.
(2)If the alarm occurs again, replace the external emergency stop
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.
(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).
There are two contact points for an enable switch, and only one point
may be turned on by how to squeeze it or when putting it on the place
where it is not a plane such as on the knee etc.
Check how to squeeze or put the programming pendant on flat.
(1)Reset the alarm.
(2)If the alarm occurs again, replace the programming pendant.