Re: acceleration profille (gained steps?)

> --- In CAD_CAM_EDM_DRO@y..., "Dan Mauch" <dmauch@s...> wrote:
> > You have the max steps per seconds is way too high. Start at 1500
> not
> > 15000 then adjust upward till it starts losing steps then back

> about
> > 10%. Also your acceleration is way too high. Start at 1000 sps.
> Also the
> > start velocity is high start at 500 and increase.
> > Dan

--- In CAD_CAM_EDM_DRO@y..., "keongsan" <keongsan@y...> wrote:
> Thanks. You are always dependable. Reset the parameters to
>
> max sps: 1500sps ( ~9ipm)
> start v: 500
> acceler: 1000spss

> Running the engraving program with xy feedrate 5ipm, everything OK.
> However, when I tried to run the same program with xy feedrate at
9ipm
> the result was distorted. looks like at a "small part" of the
> begginning of the program, x was "amplified" like when the intended
> result was a V, it has ended up with a fat \/ extended in the x
> direction - the opposite of lost steps (is there such a fault a
> gained steps?

Read lots of subsequent comments on acceleration profile but not a
squeak on "gained steps". Is it impossible? That in some part of a
gcode program that an axis may move MORE than commanded. Is there any
circumstances that such a thing may happen?

keongsan