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On the ATV312 under drC is the function tUn, you set this to ON and then the VFD will auto tune to the attached motor the first time the run button is pressed. Worked for me and saved me having to...

Even though this thread has not much to do with my setup, a 1.5hp 720 rpm 6 pole 415V original motor in a 1940 Adcock & Shipley Model 1 mill, it helped me set up my AT4, the motor drives the...