![]() In this case, the phase sequence of the motor is 元, L2, and L1, that is, the reverse operation. When the motor rotates in reverse, the KM2 is energized and the KM2 main contact is closed and the phase sequence of the three-phase power of the motor is switched. When the motor rotates forward, the KM1 is energized and the phase sequence of the motor at this time is L1, L2, and 元, ie forward operation.Ĭontactor interlocking reversing control circuit ![]() If they are pulled at the same time, they will cause a short circuit in the power supply, as shown in the following figure. However, the two contactors cannot be sucked at the same time. Reverse Pushbutton (PB) is also connected in parallel to manually operate Reverse motor. When the workpiece is near Limit switch2, It will enable reverse motor, for latching reverse Motor is connected in parallel with limit switch 2. In the positive and negative control circuit of the three-phase cage asynchronous motor, two contactors KM1 and KM2 can be used to change the phase sequence of the three-phase power supply of the motor to change the rotation direction of the motor. Forward Pushbutton (PB) is also connected in parallel to manually operate forward motor.
0 Comments
Leave a Reply. |