Yaskawa VS mini J7 Series - Manual (Page 54)

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Fault history display method
Fault description is displayed when U09 is selected.
(Example)
!!!: Fault description (“---” is displayed if there is no fault.)
(Refer to page 103 for details.)
• Clearing fault history
Set parameter n001 to 6 to clear fault history. Set data returns to its initial value
after completion of 6 setting.
Note: Parameter initialize (n01 = 10, 11) also clears the fault history.
Setting and referring parameters
The following figure shows how to select and change parameters.