Re: Parker Hannifin CD20 drives with Mach3
- View SourceLes,
thank you very much for your help. I'm heading to Radio Shack over
lunch, if they don't have it I'll get it from one of the mail-order
places. I can't wait to have this mill perform its first wiggle.
--- In firstname.lastname@example.org, Les Newell <lesnewell@h...> wrote:
> In that case you need to find some way of buffering the signals. A
> ULN2003 is easy to use. Get the data sheet from here
> <http://www.jaycar.com.au/images_uploaded/ULN2003.PDF> to see what I am
> talking about (usual warning - you may have to cut and paste the link).
- View SourceHi c:
> move. I know they are live because if I disconnect the step andIf the motors chatter when the step/dir lines are disconnected, the I
> direction wires to the controller with everything powered up, the
> motors chatter. But, Mach cannot make the motors move. The manual
> for the controllers says that they expect a "low-going transition" for
> step and direction signals. It also says that "the input should
> remain low for not less than 5us and not more than 30us" Max step
> rate is 50kHz in half-step mode which is how they are jumpered.
suspect one thing,
either they are 12 volt (or 24Volt) inputs (many parker's are). Youd need to
make a 24 volt level shifter to run them. (I dumped a few parkers years ago
due to poor performance due to this issue..)