The parameter PPR in the Drive and the MSU have to match. The PPR is pulses per revolution. If the velocity encoder is mounted on the end of the motor shaft, 2048 is correct. If it run off of a wheel on the machine sheave you have to input the correct PPR to the drive and to the msu. If the speed boards aren't pulling in that is the problem. try adjusting the intermediate speed board, it will not pull in if it is out of tolerance, a fairly common occurrence. Tweak the pot on the board, and check motion averages for changes. Also the speed board may be bad if it won't change when you tweak it. A not UN-heard of problem.