... speed sensor mode. V/F and SVC can be selected.2.Optimized space voltage vector PWM modulation technique, over modulation, ... 5HZ/150% torque output under no-speed sensor mode.4.LED display and removable keypad . display frequency , current ,parameters ... control mode is very flexible.6.Abundant functions: automatic voltage regulation control, automatic slip Compensation, restart when power off ect. Can ...