Try these, set Min Overspeed Band to maximum. Raise KP Velocity by 10% and see if it runs longer. Check that the PPR in the Drive parameters, and PPR in the MSU are the same. Check that Brake Pick time is longer than Brake Econ time. If this is an analog drive and someone pulled the Main Line switch before shutting down the Miprom, you may have lost all the field programable parameters. Things like the floor table and motor rpm, if this happened you need to check them all.