Alarm List
Alarm Number (4000 to 4999)
Alarm List-509
4168 CIRCUIT TRIPPED
(OPTION:2)
Sub Code: Signifies the YFL
unit number in which the
alarm occurred.
Incorrect setting Check if the circuit protector is turned on.
Parts failure Check the status of circuit protector.
Connection failure (1)Reset the alarm.
(2)If the alarm occurs again, check the connection and inserting state
of the following cables and connectors.
∙ No.15,16 of CN806 in the YFL unit.
Unit failure (YFL) (1)Turn the power OFF then back ON.
(2)If the alarm occurs again, replace the YFL unit.
other If the alarm occurs again, save the CMOS.BIN in maintenance mode,
and then contact your Yaskawa representative about occurrence
status (operating procedure).
4169 I/O-EXPANSION
BOARD ERROR:1
Sub Code: Signifies the YFL
unit number in which the
alarm occurred.
Short circuit or ground
fault
(1)Reset the alarm.
(2)Check the following settings.
∙ DC24V output from I/O expansion board is correct.
∙ FU1 or FU2 fuse in I/O expansion board is not blown.
∙ A short circuit or ground fault has not occurred in IN/OUT line of I/O
expansion board.
Fuse blown (XOI) (1)Reset the alarm.
(2)Check DC24V output from I/O expansion board is correct.
(3)Replace the fuse(FU1,FU2) in I./O expansion board.
Unit failure (XOI) Check the I/O expansion board.
Connection failure (1)Turn the power OFF then back ON.
(2)If the alarm occurs again, check the connection and inserting state
of the following cables and connectors.
∙ No.2,3 of CN809 in the YFL unit.
other If the alarm occurs again, save the CMOS.BIN in maintenance mode,
and then contact your Yaskawa representative about occurrence
status (operating procedure).
Alarm
Number
Alarm Name
Sub
Code
Meaning Cause Remedy
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