welcome to another PLC programming tutorial
video .In todays tutorial we will see how we can program a pneumatic cylinder pusher. before starting I Would like you guys to please
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video tutorials. Lets start todays tutorial, as you can see
that this setup have a Pusher operated by the pneumatic cylinder ,this pusher is pushing
three paint buckets towards the inspection machine conveyor. Let's see what are 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 Lets 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 lets 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[sPause sec=0.2 ePause]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 switch 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 switch I 0.1 turns ON, and starts the infeed
conveyor, and again paint buckets starts 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 good bye !
