Ideal Forward Reverse Starter Control Circuit
The figure given below shows the control and power diagram of forward and reverse starter diagram.
Forward reverse starter control circuit. They are connected so that under normal conditions one coil will connect l1 with t1 l2 with t2 and l3 with t3. In the below controlling diagram i shown the complete controlling wiring of forward reverse 3 phase motor starter. These type of starters are used in various applications e g mixing of materials dying machines etc.
The reverse contactor coil gets supply through phase r off push button f2 reverse contactor coil r on push button phase y. Press on push button r on. Otherwise the plc program will never recognize the overload signal because the starter will be turned off in the circuit during the same scan.
Forward green switch is use for to run motor forward and reverse switch is used for run motor on reverse mode. The red push button is for switch off the motor. When the alternate coil is energized lines 1 and 3 are interchanged with terminals 1 and 3 allowing for a phase shift in the 3 phase circuit driving the motor and causing it to rotate in the opposite direction.
These two normally open push. The reverse contactor coil energized and three phase induction motor runs in the reverse direction. In the above reverse forward motor control circuit diagram.
Reversal of three phase motor rotation. In this post you will complete learning about the forward reverse three phase motor controlling starter diagram. The ladder circuit that latches the overload condition forward or reverse must be programmed before the circuits that drive the forward and reverse starters as we will explain shortly.
In the below i shown the one normally close push button switch nc and two normally open push button switches no. As the name defines forward reverse starter is used to run the motor in both sides forward and reverse. These forward and reverse starters are dol type and not used above the 05 hp motors.