Breathtaking Forward And Reverse Motor Control
You can reverse the direction for dc motor in two ways.
Forward and reverse motor control. Forward reverse motor control using two magnetic contractors. Normally in forward direction the dc supply will be given such as f1 positive and f2 negative to change the direction the polarity should be f1 negative and f2 positive. The motor operates in the forward and reverse direction by making the coil in the relay energize and de energize.
The forward reverse motor control is used in a system where forward and backward or upward and downward movement in the operation are needed. By changing the supply polarity in field winding or filed supply. The forward and reverse pushbuttons provides a means of starting the motor in either forward or reverse so that the limit switches can take over automatic control.
And connect to both magnetic contactors a1 a1 terminals. From the 2nd thermal overload relay normal close contacts the supply goes to both contactors coil contacts terminals. The relay used in this is a dual channel relay.
Field terminal consist of f1 and f2. In the above 3 phase motor forward reverse wiring diagram. Dc motor forward reverse control working principle.
Two micro switches are used in which the motor is set to move in the forward direction if one switch is pressed and in the reverse direction when the other button is pressed. Forward and reverse operation of motor can be obtained by interchanging any two of its three terminals. The neutral wire first goes to the thermal overload relay nc contacts and to the light indicator.