On 08/05/2013 03:37 PM, andy pugh wrote:
> On 5 August 2013 21:22, Gregg Eshelman <g_ala...@yahoo.com> wrote:
>
>> Now I need three servo amps suitable for those motors and a Baldor 
>> FMD0000B-00.
>
> Mesa 7i29? Or are you wed to the idea of Parallel port control?
>

In my opinion, a parallel port/software PWM signal generator is too 
slow. To get a decent frequency, one is limited to two or three bits of 
resolution, or more bits at a much lower frequency. It seems marginal 
even for a VFD speed input. Why bother with a parallel port when there 
are inexpensive FPGA generators with tons of bandwidth available?

-- 
Kirk Wallace
http://www.wallacecompany.com/machine_shop/
http://www.wallacecompany.com/E45/

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