Start Stop Motor Control Ladder Diagram. Motor control can be done with a plc program. This pattern is an extension to the sealed in coil pattern and is similar to the state coil however where the state coil is trigger dominant i e.
A very useful ladder logic programming pattern is the start stop circuit. Motor control can be done with a plc program. See image below for an example of 3 wire control being used to pull in a contactor to start a 3 phase motor.
Above figure does not show limit switch because it depends on external interlock like say level switch flow switch pressure switch etc depending on application.
Above figure does not show limit switch because it depends on external interlock like say level switch flow switch pressure switch etc depending on application. A very useful ladder logic programming pattern is the start stop circuit. Ladder diagram for motor control. The above figure shows the physical layout of motor starter however this would be designed through ladder logic in this plc tutorial.
