Re: [CAD_CAM_EDM_DRO] Gaining steps somewhere

Grounding the shield should never create any oscilation. Make sure that
the shield is soldered to the db9 connector end only. If you cannot
correct this problem, I would suggest purchasing the r516 driver from
rutex. This chip will convert a single end encoder signal into a
differential signal. The A and B signal will have a complementary A NOT
and B NOT . The signals must be 180 deg phase difference then the A and
B signal if they are to be counted. If you have noise in your setup,
these signals are the same phase. This will correct your problem.
David
Steve Haushahn wrote:

> David
> Thats probably it.. I do have an electrical noise problem that I havent corrected..This is single ended encoder .Did wire in the couple resistors per the instructions that came with my Rutex drives...But grounding the cable sheild of that encoder sends the motor into vigorous oscillations..Even separating that encoder cable from every current carrying wire in the control box hasnt solved that one..Except for gaining a few steps , this encoder , not having it's shield grounded works quite well.......No ground loops anywhere, using star ground......I wonder if these single ended US Digital encoders need the resistors?...
> Steven
>
> Gained pulses is nearly always associated with electrical noise. Are
> you using differential encoders or single ended? Have you properly
> sheilded the encoder wires. Are you running the high volt motor wires
> parallel and in close proximity to the encoder wires. Do you have the
> high volt motor wires running overtop of the servo amp?
> David
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