Help with selecting hardware for CNC retrofit

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17 Sep 2021 22:58 #220959 by PCW

Yes, no voltage difference over "-" and "gnd" when I run the motor.
I will check the motorspeed tomorrow when it runs on max (3V) and see if it comes up to 2000rpm/min as the motordata says.
 

That's typical because the drive input is differential (for noise immunity) 
but the analog out from the controller is single ended.

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18 Sep 2021 21:40 #221039 by Norrby
It wasn't so easy to see the amount of rpm's but I did some more testing and managed to start a program with a lot higher speed than I was able to do in manual mode, so the driver card is -10V/10V.
Ok good, I think I'll go for the mesa 7i92M and 7i77.
Thanks for the great support!

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