PLC Programming Tutorials for Beginners || Ladder logic for pusher
Amorosjbk63cdsWelcome to another PLC programming tutorial video. In today's tutorial we will see how we can program a pneumatic cylinder pusher. before starting I Would like you guys to please subscribe my channel and press the bell icon to receive the notification of newly uploaded video tutorials. Let's start today's tutorial, as you can see that this setup has a Pusher operated by the pneumatic cylinder, this pusher is pushing three paint buckets towards the inspection machine conveyor. Let's see what devices and sensors we are using in this setup.
we have installed a proximity sensor to detect the paint bucket presence. this sensor is connected at I0.0 PLC input. next we have installed a reed switch on the cylinder body; this reed switch will be turned ON Once cylinder is in back or home position. this reed switch is connected at I 0.1 input of the PLC. next we have another reed switch installed on the cylinder body; this reed switch will be turned ON once cylinder is in forward position. This reed switch is connected at I 0.2 input of the PLC. next we have a pusher cylinder, which is used to create a linear motion. This cylinder will be activated by the PLC output Q 0.1 Next; we have installed a geared motor to drive the infeed conveyor. this motor will run with PLC output Q 0.0 Let's see the ladder logic now. In network 1, There is a Auto start M 10.0 bit. This bit is to start the process in Auto Mode. next we have connected, in series a bucket sensor I 0.0. this normal open contact I 0.0 will be closed once paint bucket comes in front of this sensor, and this will start a debounce contact timer, and once timer is over buckets ready to push output bit, M 10.1 will be turned ON. In network 2 we have logic to start the pusher cylinder. once auto bit, M 10.0 and buckets ready to push bit, M 10.1 is ON and Cylinder back reed switch I 0.0 is ON, this will latch ON the output Bit, Q0.1 and pusher will start to move forward. Once pusher reached forward position, it will turn ON pusher forward reed switch and its normal close contact will open and turn OFF the output, Q 0.1 and pusher will come back to home position.
Network 3 is to start, and stop the infeed conveyor, logic is simple, once auto bit is ON and pusher in the home position, this will start the infeed conveyor. and once pusher is away from home position, infeed conveyor will stop. Now let's test the ladder logic. we will slow down the animation so that, we can understand how the logic is working. as soon as, the paint bucket comes in front of the sensor I 0.0, timer starts, once timer is Over. it will turn on buckets ready to push M 10.1 bit. Now in the network 2 Normal open contact of the M10.1-bit closes. And pusher home, or back reed Switch sensor is ON, this latch ON, pusher output Q 0.1[spa use sec=0.2 pause]and pusher starts to move forward and pushes the bottles on the inspection conveyor. now, as soon as the pusher cylinder leaves, the home position, back reed switch I 0.1 turns OFF in the network 3, and it stops the infeed conveyor, Q 0.0 as the pusher cylinder reaches the forward position, forward reed switches I 0.2, turns ON and its normal close contact opens up, and it turned OFF the pusher Output Q 0.1, and pusher starts to move back. In network 3 as soon as the pusher cylinder reaches the back or home position, back reed switches I 0.1 turns ON, and starts the infeed conveyor, and again paint buckets start moving on the platform and, this cycle will continue.
Now we see the animation in the real speed. So that's the end of the today's tutorial, I hope you like it, please share, like and subscribe and stay safe. till next time take care and goodbye!
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