YASKAWA DX200 Maintenance Manual page 1100

Alarm Name
Alarm Sub
Number
Code
4747 M-SAF OVERRUN
SIG. ERROR
4748 M-SAF ON_ENABLE
SIG. ERROR
Meaning Cause
The meaning of each sub Overrun limit switch
code is as follows: released
1:OT1
2:OT2
3:OT3
4:OT4
Connection failure
Overrun limit switch failure (1)Reset the alarm.
YSF21 board failure
YSF22 board failure
YFC22 board failure
Other
The meaning of each sub Connection failure
code is as follows:
1:ON_ENABLE1
2:ON_ENABLE2
3:ON_ENABLE3
4:ON_ENABLE4
Remedy
(1)Reset the alarm.
(2)If the alarm occurs again, overrun limit switch is released. Select
"OVERRUN&SHOCK SENSOR" under sub menu "ROBOT" to reset
the limit switch.
(1)Reset the alarm.
(2)If the alarm occurs again, please insert and conduction state of the
cable and connector of the control group to which the overrun limit
switch has tripped.
(2)If the alarm occurs again, replace the limit switch or an equivalent
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 board, which is connected to the control group on which the alarm
occurred.
(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 ON_ENABLE signal line.