Re: [CAD_CAM_EDM_DRO] G320 compared to G340

grantfair2001 wrote:

>I have some E543 Electrocraft DC brush servomotors, used, and hope to
>use them to CNC my mini-mill. I am wondering about using Gecko drives
>and wonder what is the advantage of the PLL feature of the 340. Any
>other differences to recommend one over the other?
>
>

The only reason to use a G340 instead of a 320 is if the
encoder/drive/leadscrew
system will require more step pulses per second, at the desired maximum
speed,
than your software-generated step-pulse CNC program can produce.

In that case, using the G340 will allow you to get 2x, 5x, or 10x
greater speed,
but at a corresponding drop in resolution. The higher the encoder
resolution,
the more of a problem this becomes. On the other hand, higher encoder
resolution (without step-rate multipliers) can give smoother motion.

Jon