AC Inverter with High Torque Output is offered with RS422/RS485 serial communication port and Modbus message format. The AC Inverter is provided with 16 multi-speed settings, up or down selection and jog command. The AC Inverter is provided with the facilities of PID control, energy savings control, speed search and auto restarting. AC Inverter with High Torque Output is equipped with automatic torque boost, slip compensation, stall prevention, over/under torque detection and DC injection braking.