Re: Running a BOSS on single phase

I have a BOSS 6 which I have been running on the factory control
until my retrofit is complete. I get about 100-120 IPM rapids which
don't appear to loose any steps. However, the control sometimes
crashes for no reason. Sometime when the control crashes, the stepper
waveform goes to hell and the motors will just make a grinding noise.
Even when all is working, the program memory is so small, you have to
break most programs apart to run them.

~petev

--- In CAD_CAM_EDM_DRO@yahoogroups.com, Les Newell <lesnewell@c...>
wrote:

> I was getting 60IPM from mine but I was always plagued with

occasional

> lost steps, even if I reduced the speed and acceleration. In the

end I

> came to the conclusion the lost steps problem was more a Mach2

issue

> than the motors/drives. Because there is so much inertia, the pulse
> train needs to be extremely smooth. Mach2's pulse train can be a

little

> rough at times.
>
> Once I bit the bullet and changed to servos all my problems went

away

> and I now get up to 200IPM if I want it. Normally I have it

throttled

> back to around 100IPM.
>
> To be honest 60IPM is easily fast enough unless you are doing a lot

of

> production work where every second counts.
>
> Les
>
>
> Polaraligned wrote:
>
> >It is really tempting to keep and use the steppers that are

already

> >set up. I just can't get a straight up answer from the archives
> >as to how well it may perform. A bunch of people were only able
> >to get 60 or maybe 80 ipm rapids before reliability went down the
> >toilet. I wonder how well a modern NEMA 42 stepper would work
> >in comparison to the original 25+ year old steppers. The

technology

> >put into them must have changed sifnificantly since then. If I buy
> >stepper drivers
> >to use with the factory motors, then I am comitted to steppers.
> >What does a modern NEMA 42 go for these days? and are they better
> >than the original ones? These are questions I need to figure out
> >before comitting to steppers.
> >
> > Maybe servos are the safest bet. Many frown on them because they
> >think they cost more, but there are servos available on e-bay that

are

> >pretty inexpensive ($250 or less per axis with encoders)
> >
> >
> >Scott
> >
> >
> >
> >
> >
> >
> >
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