This is a PLC Program for Forward and Reverse control for 3 Phase Asynchronous Motor.
Problem Description
There are lots of motors and conveyors used in industries for different purposes.
In some cases, motors or conveyors need forward and reverse operation for some control purpose.
For example overhead crane, in crane every time operators moves it forward and reverse for material handling.
So we can use PLC systems for programming the motor for forward/reverse operation.
In this case, we need to operate motor in both direction, that can be possible only by forward/Reverse Control Relay Circuit or through Logic.
Here we solve this problem by using simple Forward/Reverse Control Logic in the PLC.
So here we will consider one 3 phase motor for Forward and Reverse Operation.
And we will take two contactors or relays for motor control because we need two different directions here i.e. Forward/Reverse. First contactor for Forward Direction control and Second contactor for Reverse Direction control of Motor.
Also we should consider three push buttons i.e. for forward, reverse and stop functions of motor.
So here operator will use FWD PB for forward operation, REV PB for reverse operation and STOP PB for stop function.
Note: The above PLC Logic provided for basic idea about application of PLC Logic for 3 Phase Asynchronous Motor Control. The Logic is limited and not complete application.
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