Re: [CAD_CAM_EDM_DRO] need to upgrade control

terrygh1 wrote:

> Tom thanks for your reply, I have checked out all the sites
>you posted over the last 6 months along with others.
> www.glentek.com, www.ajaxcnc.com, www.turnertec.com
>www.copleycontrols.com, http://www.geocities.com/machinemate/,
>http://www.logosolinc.com/, plus a lot more.
> The driver boards and the regulator board are connected to
>the bandit control by a 16 pin ribbon cable, so separating them from
>the old control is not a problem.
> What I really need is some sort of self contained motion
>control that will output a +/- 10vdc to the drivers, accept either
>encoder or resolver feedback and interface with a notebook running
>software that I can program in Gcode. I use a windows based program
>called Shadcom to upload and download programs to the Bandit control
>now, this is done thru my notebook's serial port.
>
>

My PPMC board set does this. The DAC board outputs 4 axes of +/- 10 V
signals for the positioning axes and the spindle speed. The encoder board
can be set up for 4 axes of either single-ended or differential encoders.
Depending on the specific resolvers, it may be possible to get resolver
to quadrature converter boards for about the same cost as replacing the
resolvers with encoders. The digital I/O board connects to the limit
and home switches, servo and spindle enable solid state relays, and the
estop circuits. The CNC control program is EMC, which is about the
ONLY open-source CNC control program out there that does real
servos. Note that when you hit e-stop with this system, it turns into
a DRO, and you can move the machine manually, if it has that capability,
without losing your coordinate references.

See http://jelinux.pico-systems.com/PPMC.html for more info on this
product.

Jon