Want to makeThree-phase asynchronous motorThe primary condition of rotation is to have a rotating magnetic field, and the stator winding is used to generate a rotating magnetic field. We can change the steering according to its operating principle, just switch any two of the three power lines of the motor and change the three-phase current phase sequence into the motor, which is followed belowMori machineLet's take a look.

       The following figure shows two start buttons, which are used to control two contactors to change the phase sequence of the three-phase current passing through the motor; Wherein, the contactor (KM1Be used forThree-phase asynchronous motorForward control; contactorKM2Used for motor reversal control.

       We can see from the main circuit that if two contactors (KM1), (KM2Due to operation error and work at the same time, the six main contacts are closed at the same time, which will cause a short circuit of the three-phase power supply, which is not allowed. Therefore, a reverse contactor is inserted into the forward control circuit (KM2) auxiliary normally closed contact (KM2), a forward contactor is inserted into the reverse control circuit (KM1) auxiliary normally closed contact (KM1). In this way, the forward contactor (KM1When working, its normally closed contact (KM1Disconnect, the reverse control circuit is cut off; Conversely, in the reverse contactor (KM2When working, its normally closed contact (KM2Disconnect, turn the forward control circuit off. This ensures that two contactors (KM1) and (KM2Does not work at the same time, this mutually restrictive control is called interlock control, auxiliary contacts (KM1) and (KM2It is called interlocking contact.

       The above content is composed ofThree-phase asynchronous motor manufacturersMori machineProvided, interested in this or want to know about our products can consult online message or call directly0575-8378-1127.