Re: EMC questions

Jon , Tim and people have answered my question. Thank you.
I dont see problem with vel. or accel.
I my post was said steppers and amplifiers are switched off.
I am trying to configure my ini file, in order to know the maximun
velocity in rapids.

Tim, thank you for suggestion about TurboCNC and Yeager automation, I
hope to have more luck with them. Motors are 5v 1.4 amp half step, 6
wires half winding.

The next message, have been post in EMC group too.

Somebody Know, if input_scale parameter is limited at
a number >= 3 digits ?
OK, I am going to try explain the reason for the above question.

I am building a plasma cutter with the next dimensions:
x= 2000mm lead screw step 5mm ( 5mm per Turn )
y= 1000mm lead screw step 5mm ( 5mm per Turn )
z= 100mm lead screw step 3mm ( 3mm per Turn )

Motors are 2º per step, so in half step mode I get 360º= 1 revolution.
The input_scale for axis must be
x= 360/5mm = 72
y= 360/5mm = 72
z= 360/3mm = 120

If you tried resolutions < 100 you can jog x and y axis in clockwise,
anticlockwise dont work ever.

Z axis work fine, It has a resolution > 100.

My ini file was posted earlier, but if you have a ini file working
and change resolution < 100 you understand my problem.

Suggestion about velocity and accel. parameters have been tried
without results.
Resolution is the problem, I think.
Some help is welcome.

Thanks in advance

--- In CAD_CAM_EDM_DRO@y..., Jon Elson <elson@p...> wrote:
> ajv2803959 wrote:
>
> > MAX_VELOCITY = 66.0
> > DEFAULT_ACCELERATION = 20.0
> > MAX_ACCELERATION = 20.0
>
> Here's your problem. This acceleration is almost certainly too
high for
> a small stepper system. Try cutting it in half, or even a
quarter. Find
> the maximum speed you can move at with little acceleration. Then,
> turn up, the acceleration a little at a time until you find the
maximum
> acceleration your motors can handle. then, back off each of these
> parameters about 25%, and you should have reliable operation.
>
> > ; Axes sections --------------------------------------------------
----
> > ---------
> >
> > ; First axis
> > [AXIS_0]
> >
> > TYPE = LINEAR
> > UNITS = 1.000000
> > HOME = 0.000
> > MAX_VELOCITY = 22
>
> Note this will be 22 mm/Sec in your system, which may still be too
fast
> for your steppers and driver.
>
> Jon