Re: [CAD_CAM_EDM_DRO] AXIS CALIBERATION AND THE SAME OLD DIRTY POSITION COUNTER STUCK PROBLEM!! !

Hi Babar

You must find the ballscrew pitch by turning and measuring.

For my system I have 5 turns per inch on the screws and 500
line encoders.

So I set INPUT_SCALE to 500 line /rev x 4 x 5 rev/in =10,000.
The x4 factor is for the 4x encoder interpolation.

For you... set INPUT_SCALE to 200 x 4 x ballscrew turns/in.

I think the COUNTS_PER_REV is used only for simulation
but it won't hurt to put 800 there.

For other things refer to the .ini file on my engineering web page.

I am sorry that the position counter problem is still there. We have
tried almost everything to find the problem.

For now, if you can run reliably at 3 or 5 volt maximum output
but need more for your servo amp consider just putting
an op amp with a gain of 2 or 3.3 before it to get 10v.

Les
Leslie Watts
L M Watts Furniture
Tiger, Georgia USA
http://www.alltel.net/~leswatts/wattsfurniturewp.html
engineering page:
http://www.alltel.net/~leswatts/shop.html
Surplus cnc for sale:
http://www.alltel.net/~leswatts/forsale.html

----- Original Message -----
From: "Babar" <riet91@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>; <emc@...>
Sent: Wednesday, December 04, 2002 12:45 AM
Subject: [CAD_CAM_EDM_DRO] AXIS CALIBERATION AND THE SAME OLD DIRTY POSITION
COUNTER STUCK PROBLEM!! !