Re: [CAD_CAM_EDM_DRO] Hybrid Connectors Was Re: availability of composite multiconductor cable?

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