• The second stage is a fine-adjustment of the rotor time constant and magnetizing current, to ensure that the rotor time constant and magnetizing current are set to correct values for running at contract speed. The second stage requires the installer to command high speed, multi-floor runs under control of the motion subsystem. It is important that the elevator reach contract speed during these runs, and that the car be empty. To ensure consistent and accurate measurements, all runs must be between the same two landings, e.g., from bottom to top, or from floor 2 to 8, etc.