Re: [CAD_CAM_EDM_DRO] Re: mounting encoder with pulley

Andy Wander wrote:

>It's not really a divider-it actually does multiply the steps it receives by
>10 (or whatever you set it to). This has the same effect as would dividing
>your encoder pulses, as far as the amount of machine movement per "received
>step", but it is different in that if it was really a divider on the
>encoder, you would need 10X the amount o actual pulses INTO the Gecko to get
>the same motion.
>
>Andy Wander
>Verrex Corporation
>
>

The idea has been discussed on the Geckodrive list. Although the effect
is the same as a step pulse multiplier as far as position goes, it isn't
the same with regard to the motor holding position. When you divide the
encoder pulse train, the uncertainty in shaft position increases, which
causes dither to be larger. Mariss basically says the motor is
"stiffer" with the input multiplier vs. a decoder divider.

- Steve