Alarm List
Alarm Number (4000 to 4999)
Alarm List-897
4778 24V VOLTAGE
ERROR(SERVO I/O)
YSF21 board detected the
error of an 24V power supply
for SERVO I/O signals.
Connection failure (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
YSF22 board failure (1)Reset the alarm.
(2)If the alarm occurs again, replace the YSF22 board.
YFC22 board failure (1)Reset the alarm.
(2)If the alarm occurs again, replace the YFC22 board.
Other If the alarm occurs again, save the CMOS.BIN in maintenance mode,
and then contact your Yaskawa representative about occurrence
status (operating procedure).
4780 F-SAFE AXIS RANGE
LIMIT INTF
Sub Code: Signifies the file
number, control groupe and
axis in which the alarm
occurred.
Setting error (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.
other If the alarm occurs again, save the CMOS.BIN in maintenance mode,
and then contact your Yaskawa representative about occurrence
status (operating procedure).
4781 AXIS RANGE LIMIT
INTF
Sub Code: Signifies the file
number, control group and
axis in which the alarm
occurred.
Setting error (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.
other If the alarm occurs again, save the CMOS.BIN in maintenance mode,
and then contact your Yaskawa representative about occurrence
status (operating procedure).
4782 F-SAFE AXIS SPEED
MONITOR ERROR
Sub Code: Signifies the file
number, control group, axis
and error type in which the
alarm occurred.
Setting error (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.
Alarm
Number
Alarm Name
Sub
Code
Meaning Cause Remedy
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