The Omron Q2V-A4031-AAA is an inverter with a maximum motor power of 11/15kW and output voltage of 3x400VAC, with a current of 24 to 31A. It is used to control motor speed or torque for driving electric motors, such as AC motors, and can be used for different types of industrial automation applications and processes. It features different programmable functions for motor control, including speed/torque control and acceleration/deceleration control, as well as automatic braking, which makes it ideal for use in applications with requirements for high precision and smooth operation. It also has several other features, such as speed sensors, encoder input, analog speed setpoint, and current overload protection.