6/12/2023 0 Comments Plc ladder logic world2, the operator still has to keep pressing the button as long as he wants the motor to keep running. Maybe that helps us to control the way to energize the relay coil and use its contacts to start and stop the motor, Figure 2 shows how we can employ a relay to connect the motor to the power source. Let’s try to connect the motor through a relay as it is typically in the industry. 1: Connecting motor to power by push button directly So would please think with to figure out what is the solution for that?įig. Otherwise, the motor will stop once he releases the push button. In this circuit, the operator needs to keep pressing the push button as long as he needs the motor to keep working. To clear the problem that we are going to solve, and for which we need to use the latching technique to connect a load, Figure 1 has been created for you to show the situation to make a direct connection to a motor by using a simple push-button. The problem here is that, once the operator releases his hand away from the push button, the motor automatically stopped and that is not like what the operator wants to do with the motor. And then it keeps running until the operator wants to stop it. Imagine my friends, operator wants to start a motor by hitting a start push button and want the motor to keep running and leave and go for doing another task or job. We mean by Latching to keep the output running starting from the instance of giving a kick-off command until we hit a command to stop running of the motor. Hi friends! I hope you are doing well! Today we are going to learn and practice a new topic which is a very crucial technique in plc programming.
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