YASKAWA DX200 Maintenance Manual page 1118

Alarm Name
Alarm Sub
Number
Code
4778 24V VOLTAGE
ERROR(SERVO I/O)
4780 F-SAFE AXIS RANGE
LIMIT INTF
4781 AXIS RANGE LIMIT
INTF
4782 F-SAFE AXIS SPEED
MONITOR ERROR
Meaning Cause
YSF21 board detected the Connection failure
error of an 24V power supply
for SERVO I/O signals.
YSF22 board failure
YFC22 board failure
Other
Sub Code: Signifies the file Setting error
number, control groupe and
axis in which the alarm
occurred.
other
Sub Code: Signifies the file Setting error
number, control group and
axis in which the alarm
occurred.
other
Sub Code: Signifies the file Setting error
number, control group, axis
and error type in which the
alarm occurred.
Remedy
(1) Reset the alarm.
(2) If the alarm occurs again, check the connection and inserting state
of the following cables and connectors. Check the insertion,
connection, Short circuit , ground or 24V power line (DIRECTIN
singnals) fault of the followings.
・ YFC22-81,82,92,93 : +24V2U3
・ YSF22-CN219
・ Cable between YSF22 board and the YFC22 board
(1)Reset the alarm.
(2)If the alarm occurs again, replace the YSF22 board.
(1)Reset the alarm.
(2)If the alarm occurs again, replace the YFC22 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)Check the following settings.
∙
Check the axis range limit condition file that is indicated in the sub
code is set correctly.
∙
Modify the teaching so as not to interfere limit range setting.
If the alarm occurs again, save the CMOS.BIN in maintenance mode,
and then contact your Yaskawa representative about occurrence
status (operating procedure).
(1)Check the following settings.
∙
Check the axis range limit condition file that is indicated in the sub
code is set correctly.
∙
Modify the teaching so as not to interfere limit range setting.
If the alarm occurs again, save the CMOS.BIN in maintenance mode,
and then contact your Yaskawa representative about occurrence
status (operating procedure).
(1)Check the following settings.
∙
Check the axis speed monitor condition file that is indicated in the sub
code is set correctly.
∙
Modify the teaching so as not to over with limit speed setting.