I think there are a number of things going on in this case.
I believe the 401 alarm is the servo amplifiers not being initialized. Is a specific axis or axes specified?
The fact that you lose all the paramters, suggests that either a battery is dead and you are not maintaing memory. Check to see if you are losing anything else such as the parts or cycle counter as well.
For the random cutout, what are you cutting? Are you overloading one of the axes or the spindle in the cut?
As for the mode selector feed rate thing I am not sure what you mean I am not familiar with the Miyano macines you will need to clairfy.
If you could post all the alarms it may help narrow down your search for an answer.
Also, the default for a parameter should not necessaily be all zeros.
The more I think about this and all the issues, it sounds to me as though you may have a loose contact or board in the cabinet or control. |