We talked about that earlierThree-phase asynchronous motorThe point-motion control principle, then how does its continuous control work? The industrial motor used more in daily life is the induction motor, which is about one in the world50%Electricity consumption is caused by induction motors. So todayMori machineXiaobian will take you to understand it!

       Compared with the point control, the continuous control circuit increases three links, let's take a look at it according to the following figure:

       As can be seen from the graph (SB2) is the start button with which the contactor (KM) auxiliary normally open contact (KMIt works when we press the button (SB2) when the contactor (KMThere will be electricity at this timeThree-phase asynchronous motor(MTo carry out operational work at the same time as (SB2parallelKMThe auxiliary normally open contact will close if we release (SB2When the button is activated, (KMStill causes the contactor (KMThe coil continues to be charged, and the motor (M) will continue to operate,This action is called "self-locking", (KMAlso known as "self-locking" contacts;

       For easy controlThree-phase asynchronous motorTo stop, a stop button is added (SB1), press this button, it will cut off the control circuit, then the contactor (KMThe main contact will be disconnected, and the motor will stop running; In the figure (FRIt is to protect the motor overload heating, we call it the thermal relay, when the motor overload heating, after a period of time, the normally closed contact will be disconnected, cut off the control circuit, then the contactor (KMThe main contact will also be disconnected, at which time the motor stops working.

       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.