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the control circuit of the common electric motor(3)

2016-09-01 23:38  
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the control circuit of the common electric motor(3)
Now we will introduce the control circuit of electric motor which can both jog control and long-term operation.S1 is the start button.52 is the stop button.53 is jog control button.When it gets start, the knife switches get through.When 51 is pressed,KM is pulled in.The normally open contacts KM1 and KM2 are connected.The electric motor M starts to work.When 51 is disconnected,KM stays pull in as the contactor of KM2 is connected already.When you want to stop it,you can press 52.KM is released.The normally open contact is disconnected.M stops working.When you want to jog control it,you can press 53.KM is conducted to pull in.M starts to work.When 53 is disconnected.KM is released.M stops working.