On Mon, 30 Jan 2012 11:22:36 -0600
Jon Elson <[email protected]> wrote:
> Viesturs Lācis wrote:
> >
> > I would like to ask, if anyone could provide some recommendations
> > for US Digital encoders - I chose them, because they seem to be
> > next in the line in terms of affordability.
> >
> US Digital may not be the greatest. At least, at one time, you had to
> add capacitors
> to the encoder to make it work with longer signal cables. Avago and
> Renco make
> some nice, affordable encoders. I get the Avago units from Avnet, not
> sure about Renco distributors in EU, but they are now owned by
> Heidenhain.
Viesturs,
I've had good luck with Koyo encoders from Automation Direct. I
use the TRD-2500-VD. differential, 2500 lpr, light duty ...
dust sealed and have had no trouble with them. They are more
expensive than the USD but still, I think, available at a good
price.
I also assume you use a star grounding system for your encoder
and signal cables. On my Mazak all the cables have a section of
bare shielding braid that is clamped to a grounding bar. I've
monitored an encoder line for 24 hours and not had a single
hit. :-)
Dave
>
> Jon
>
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