Parker EME Setting up Compax3192-120114 N5 C3I22T11 June 2008 1734.3.3.2 ConfigurationIn this chapter you can read about:Control path ..................................................................................................................... 173Motor parameters relevant for the control........................................................................ 174Mass inertia ..................................................................................................................... 174Nominal point data........................................................................................................... 174Saturation values ............................................................................................................. 176Quality of different feedback systems.............................................................................. 176Typical problems of a non optimized control ................................................................... 177Feedback error compensation ......................................................................................... 178Commutation settings ...................................................................................................... 180I²t - monitoring of the motor ............................................................................................. 180Relevant appication parameters ...................................................................................... 183Asynchronous motors ...................................................................................................... 187Control pathFor the motors, the knowledge of the mathematical model is a prerequisite.Mathematically idealized model of the control path:R/1 TKTKπ2π21U: Cotrol voltageUEMC : electromagnetically generated voltage in the motorT: electric time constant of the motor windingL: Winding InductanceR: Winding ResistanceMA: Drive torque of the motorML: Load torqueMB: Acceleration torqueI: Actual current r.m.s. (torque-producing)KT : Torque constantJmot: Motor mass moment of inertiaJ ext: External mass moment of inertiaJ total: Total mass moment of inertiaa: Accelerationn: Velocity
