There are 2 3-phase star connected asynchronous motors in one machine. When the "Start" button is pressed, the first engine will start immediately, and the second engine will start 30 seconds after the first engine starts. After the two engines run together for 20 seconds, the first engine will stop and the second engine will continue to run until you press the "Stop" button. When any of the two motors' overcurrent relay trips, both motors will stop. Connections must be made so that the direction of rotation of the motors is in the opposite direction. Draw the necessary power and control circuits. Draw the required power and control diagrams.