The most common use of 3 wire control is a startstop control. In this ladder logic example there are two inputs.
Simple Start Stop Wiring Diagram C3 Wiring Diagram
Simple start stop motor control diagram. Simple startstop ladder logic relay. A very common form of latch circuit is the simple start stop relay circuit used for motor controls whereby a pair of momentary contact pushbutton switches control the operation of an electric motor. Theres a diagram shown in the process. T w 6. This is the first of many motor control. For push button control stations 7 start stop control wiring diagrams single station with motor stopped pilot light l1 start l2 i 1 stop 2 oi 3 n wol.
This is how the ladder diagram looks for a simple startstop function. Motor control circuits are effective way to reduce cost by using smaller wire. This video guides you how the stopstart motor control circuits wiring done. Start button or plc input i00. With the motor running contacts are open. In this particular case i show a low voltage control circuit and a 3 phase higher voltage motor.
As long as you follow the ladder diagram and take it one wire at a time its simple. The function can be used to start and stop anything like a motor startstop. When you press the start button and the stop button is not pressed the 24vdc relay energizes and it pulls in the r1 contactor that feeds three phase power to the motor. Stop button or plc input i01. The start button will activate. See image below for an example of 3 wire control being used to pull in a contactor to start a 3 phase motor.
C i m nc. Pilot light l2 4 2 3 pilot light start stop bulletin 1495 normally closed auxiliary contacts are required. This video is a step by step explanation of wiring start stop basics.
Gallery of Simple Start Stop Motor Control Diagram
