Kirk Wallace wrote: I have some spindle issues to work out. > I have an SSR for each: spindle brake, forward relay, reverse relay, high > speed clutch, and low speed clutch and a stepper motor and limit switches > for the variable speed pulley mechanism. Either that or go with the VFD. > Either way presents new territory and hardware. Spindle brake, forward and reverse are already pretty well supported. See the same file I mentioned before, they are all there. The signals spindle-up and spindle-down are there, too, for spindle speed control. It shouldn't be real hard to rig a stepper motor to a cheap stepper driver and a 555 timer to produce the step pulses. The simplest logic could check the limit switches, and if not tripped, send step pulses to the driver and set the direction, too.
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