Hybrid Connectors Was Re: availability of composite multiconductor cable?

This is a servo system. I will have 1000uF caps on the motor power
inputs on the gecko 320's. What is meant by commodity motor drive?

Do Gecko 320's output PWM?

--- In CAD_CAM_EDM_DRO@yahoogroups.com, Jon Elson <elson@p...> wrote:
>
>
> mrgamber wrote:
>
> >I'm looking at some hybrid d-shell connectors that have 2 power
pins
> >and 5 signal pins.
> >
> >If I use 2 seperate cables for power and signal, but they enter
the
> >backshell at 90 deg to each other, wire to their respective pins
and
> >then seperate again inside the box, will this still be a problem?
> >
> >As I understand it, running the wire for a distance in parallel is
> >the problem and not the being close in a few places.
> >
> >
> >
> The real problem is unfiltered PWM outputs on commodity motor
drives.
> I have had no problem with noise on the encoder or tach signals on
my
> servo system. But, I put a very effective output filter to remove
the
> high energy pulses on the PWM output to the motor. (I used shielded
> cable for the tach and encoder, anyway.) but, I run all the cables
parallel
> without any problem. Probably you can't do that with Gecko or Rutex
> drives.
>
> I used round circular plastic connectors from AMP. They have a
large
> choice of these in the Digi-Key catalog. I used some 27 pin
connectors
> with all the same size pins, rated at 5 Amps/pin. But, they do
have some
> with wide blade-like contacts in some positions, so you can have big
> ones for the motor and smaller for encoder, limit switches, etc.
>
> Jon