Replicapro I have the larger lathemaster mill and replaced the stock start, e-stop, and forward/reverse switches with better quality components from Grainger. You have electronic speed control so you might be stuck with the stock electronics but you can still wire in a system wide e-stop that cuts the mains among other things, that will get the spindal stopped for sure.
You should consider using a solid state relay to cut power to the spindal motor to avoid the EMI pulse which I'm told can zap your computer from several feet away. The ST relays stop on the zero volt crossover. I'm no expert mind you, this is just the advice I got from Industrial Hobbies.
Personally, I doubt you got a chip in there, I think it just blew on its own due to a defect. Either way you cannot trust this again right. What if it fails again while you happen to be changing an end mill or something and the spindal fires up at full speed. You got to either yank the plug every time you get near it or wire in a master e-stop.  |