Dec 17, 2019 · VFDs are effective for budget-sensitive applications requiring only moderate positioning accuracies and resolutions. "When you need accuracy between 0.5 mm to 2 mm, in general, VFDs will work," says Dahlquist. "When you get into accuracies around 0.1 mm or 0.01 mm, that's when we'll go to a servo.".
