FR-V520-xx-NA

V500 Series VARIABLE FREQUENCY DRIVES 1 – 400 HP www.DataSheet4U.com The Reliable “V” Combining High Performance with Ease-of-Use! Loaded with New Technology! Adaptive Flux Observer Motor flux is continuously updated using the motor current and the inverter output voltage. The motor flux is calculated at high precision, improving torque accuracy. Torque fluctuation caused by changes in the motor temperature is reduced by using online tuning with the adaptive flux observer, high torque accuracy is realized regardless of changes in the motor temperature (Vector control with encoder). www.DataSheet4U.com Improved torque accuracy makes this product suitable for torque controlled applications such as winding machines, printing machines (tension control) and steel lines (helper control using speed-torque). Motor Temperature – Torque Characteristics 120 110 Without online tuning Torque (%) 100 90 80 70 With online tuning Motor 30 HP 60 30 50 70 90 110 Motor Temperature (°C) Simple Gain Tuning The motor’s load inertia is estimated online, and the speed control gain and position loop gain are adjusted automatically. Rotation Speed (r/min) Speed control gain and position loop gain adjustments are no longer necessary! The motor’s load inertia, estimated automatically online from the output torque during acceleration / deceleration, provides the optimum speed control gain and position loop gain. The software can set the optimum response automatically with the 15-step responsi...