Re: motor grounding and DB9 connector question

Hello,

DB9 pins are rated for 5Amps. There is a difference between the insert
(machined) and stamped versions. Check a digi-key or mouser catalog.

Hope this helps,

Ballendo

--- In CAD_CAM_EDM_DRO@y..., "resosys" <resosys@y...> wrote:
> > I believe each pin is good for 2 amps, and as a (standard 2 phase
> > bipolar) stepper needs 4 power lines, I think you might be
> restricted
> > to 4 amps (ie four paired wires, and maybe a ground).
>
> Great info, thanks. The DB9's are not going to cut it.
>
> > Someone here was using a DB25 (perhaps it was Al Schoepp)
> > and he uses four bundles of four wires, leaving 9 wires
> > for other functions (limit switches etc).
>
> Seems like a bit too much to split the wires out to that many pins.
>
> > These days I am just dispensing with the connectors, running
> > the wires into the box through a rubberized plastic weatherproof
> > cable strain-relief socket, available at any electrical dealer.
> > It comes with a selection of rubber inserts to match your wire
> > bundle diameter, and hold them snug.
>
> I'd like to have connectors at the control box so that I can move
the
> box to other machines. I will have a converted mill before year's
> end and plan to swap the control box from the router to the mill,
as
> necessary.
>
> I'm hoping someone on the list has purchased some hearty connectors
> and had good luck with them. I'm not afraid to pay a little extra
> for a great connector, I just need to find them. Any supplier
> suggestions would be greatly appreciated.
>
> Thank you for the reply. This list has been incredibly helpful.
>
> Chris