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  1. 02-05-2020 #5
    Doddy's Avatar
    Lives in Preston, United Kingdom.
    Doddy
    Last Activity: 4 Weeks Ago Has been a member for 9-10 years. Has a total post count of 1,364. Received thanks 188 times, giving thanks to others 66 times. Referred 1 members to the community.
    I'd be looking at the RS485/ModBus controller (available for UCCNC and Mach3) - at least to see if it's viable for your VFD. It avoids some of the problems with analogue noise, linearity, etc.

    There are a few ways to use the UC300ETH for VFD speed control - the usual PWM output on the more typical BoBs, the analogue output that Jazz covered, as well as the above suggestion to disregard it altogether.
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