Forward And Reverse Starter Control Circuit. Repeated reversals of the direction of motor rotation are not recommended. If the reverse button is pressed while the motor is run ning in the forward direction the forward control circuit is de energized and the reverse contactor is energized and held closed.
From the forward push button switch the touch current supply goes to 2nd contactor nc auxiliary contacts and from the auxiliary contacts the wire goes to the first magnetic contactor no auxiliary contacts terminal and coil a2 terminal as shown in the above forward reverse motor control diagram. Repeated reversals of the direction of motor rotation are not recommended. Forward and reverse motor starter wiring diagram.
As soon as forward contactor energized its auxiliary contact f1 becomes normally closed nc from no whereas f2 becomes normally open no from nc.
Forward reverse control circuit when designing the control schematic for forward reverse circuits we start with the standard three wire circuit add a second normally open pushbutton and add a holding contact branch for the second coil. As soon as forward contactor energized its auxiliary contact f1 becomes normally closed nc from no whereas f2 becomes normally open no from nc. Now the forward contactor gets supply through phase r off push button r2 forward contactor coil f1 phase y. Forward and reverse motor starter wiring diagram.
