Alarm List
Alarm Number (1000 to 1999)
Alarm List-401
2 Functional safety received an
offline command.
Connection failure (1)Turn the power OFF then back ON.
(2)If the alarm occurs again, check the connection and insertion of the
following cables and connectors.
∙ CN203 cable of YSF21board.
∙ CN250/251 cable of YSF25 board.
∙ Terminator is inserted in the CN250 of YSF25 board (last station).
YSF21 board failure (1)Turn the power OFF then back ON.
(2)If the alarm occurs again, replace the YSF21 board. Save the
CMOS.BIN before replace the board to be safe.
YSF25 board failure (1)Turn the power OFF then back ON.
(2)If the alarm occurs again, replace the YSF25 board. Save the
CMOS.BIN before replace the board to be safe.
other If the alarm occurs again, save the CMOS.BIN in maintenance mode,
and then contact your Yaskawa representative about occurrence
status (operating procedure).
3 There was no response from
machine safety board with in
the time limit.
Connection failure (1)Turn the power OFF then back ON.
(2)If the alarm occurs again, check the connection and insertion of the
following cables and connectors.
∙ CN203 cable of YSF21board.
∙ CN250/251 cable of YSF25 board.
∙ Terminator is inserted in the CN250 of YSF25 board (last station).
YSF21 board failure (1)Turn the power OFF then back ON.
(2)If the alarm occurs again, replace the YSF21 board. Save the
CMOS.BIN before replace the board to be safe.
YSF25 board failure (1)Turn the power OFF then back ON.
(2)If the alarm occurs again, replace the YSF25 board. Save the
CMOS.BIN before replace the board to be safe.
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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