Yaskawa A1000 Current Detection Error

Try just doing the Static tune, if you did the whole thing before. We assume the test motor you used had no mechanical load attached. That tells you it is likely something about the load that the drive does not expect, or really wrong motor parameters.

Check to make sure that you set the correct number of poles for the motor, having the right speed is not enough. Default is usually 4 poles, if you have a 6 pole or 2 pole motor connected, the drive will act funny.

In the case of a load with an odd speed-load characteristic, or setting a high speed regulator response on a load with lots of backlash or slop in the drive train, that can also create a problem.

The slip regulator may assume too low a slip for your particular motor, and expect counter-EMF before you even get the shaft to move. Recheck all motor parameters closely.

Try setting the regulator from sensorless vector to volts/Hz. That usually is a last ditch solution for a squirrelly application, and should make it work fine.