电机正反转控制电路工作原理及流程

Start: Press the start button SB1, the coil of KM1 is energized, and the coil of KM4 is also energized at the same time. At this time, the motor rotates forward. After a delay of 3 seconds, the coil of KM1 is de-energized, and the coil of KM2 is energized. At this time, the motor rotates in reverse. Press the start button SB2, the coil of KM2 is energized, and the coil of KM4 is also energized at the same time. At this time, the motor rotates in reverse. After a delay of 4 seconds, the coil of KM2 is de-energized, and the coil of KM1 is energized. At this time, the motor rotates forward. Press the stop button SB3 to stop the motor.