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Auto star delta and forward reverse control circuit for motor

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Layout diagram

Wiring Diagram

  • Contactor Switch-04
  • Push Button (NC, NO) -03
  • Overload -01
  • Timer-01

Procedure: First, draw the control circuit. Then draw the power circuit accordingly. Then set all the items on the power circuit. Check the circuit with a multi-meter and give a power supply of 230V. Then, set the motor to the third power circuit and set all its items. Then connect it to the main power supply. 

Activity: When S1 activates, K4 and K1 contactors and the timer start and switch on the motor in the star mode. When S2 activates, the motor goes reverse in the star mode. When the timer goes off, K4 contactor stops and the motor activates in the delta mode. 

Conclusion: Circuit activated correctly 

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