Re: motor grounding and DB9 connector question

Trailer light connectors are available in multiple terminal
arrangements as some of them carry signals for tail lights, L & R
signal lights, electric brakes, auxillary battery charge wires
ground etc. These connectors come in a variety of shapes & sizes. the
tow vehicle end is designed to mount in a truck bumper and therefore
is a natural to mount in a panel box. It also sports a spring loaded
cap that closes when the unit is unplugged to keep out road dirt(or
machining chips). The trailer end Has great strain relief provisions.
Wires are connected into brass terminals via set screws. The best
sources for these are usually RV dealerships, pick up specialty shops
or Auto Parts stores. Seems a natural to me.
Good Luck,
Dale


-- 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