I have wired the E-Stop to the enable line on the stepper drivers.
If the spindle stops dead due to tripping over-current, it needs to issue and instant e-stop so that the feed stops when the cutter is not moving.
This requires a low-speed comparator from the hall sensors on the spindle motor.
Using software to control this safety issue is NOT AN OPTION that should be considered.
The best thing is a safety relay that drops out. That's how the big end of town do it, and then some still do not sense spindle stall.
A cutter not turning, with feed will shatter, and the fragments can become unguided missiles. You won't see it coming!
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Super X3. 3600rpm. Three ways to fix things: The right way, the other way, and maybe your way, which is possibly a faster wrong way. |