i am converting an older Anilam Eagle cnc km-750..
during the course i have gotten most everything working once again with a new drive package..
i am using LeadShine M860 stepper driver in 1600 microstepping mode and Leadshine 4.5 NM NEMA34 motors ( 1/2" shafts) in parallel coil configuration and a cnc4pc c-10 breakout board ( one more on order for i/o) the axis tests are perfect ( almost better than original.. .0002 resolution) .. someone had the brains to have a ball screw cover..
the problem..
the spindle once had a vfd and had an air controlled variable spindle speed setup...
i am converting the air system with a stepper .. and the vfd is toast.. i have spent so much money in fancy controls and doo dads.. i am holding off on a replacement vfd for a few months.
i am replacing it with a set of 3phase contactors.. one for cw the other for ccw and one for e-stop that kills power to the whole motor circuit. ( for redundant protection)
the problem i am wondering is when i issue a m3 or m4 command is there an xor designed into the software to prevent the simultaneous output on both the pins assigned to m3 and m4?
or should i design a safety circuit that xor's the output and ands them back into the relays controlling the 3phase contactors?
another question is the output of the signal of the m3/4 is it a pulse or is it a sustained signal high or low until i issue a m0 or e-stop.
way too many questions .. but i have not seen the topics asked or answered yet..
Guest
Show Posts