Make a PLC Ladder diagram for Automatic car washing process using PLC program in RSLOGIX 500 software.
The ladder logic of Automatic Car Washing Process using PLC Ladder Diagram explanation as follows :
Latching rung to operate the system through Master Start and Stop PB.
Car entry sensor triggers the memory bit which will turn on conveyor motor
ON/OFF operation of conveyor motor is happening in this rung using various conditions like Sensor input and timer done output.
When car reached stage 1 sensor conveyor motor should stop and water sprinkler should ON for 10 sec.
At the end of water sprinkler timer, Conveyor will again ON because of the parallel contact in rung 0002.
When car reached stage 2 sensor conveyor motor should stop and brusher should ON for 10 sec.
At the end of brushing process, Conveyor will again ON because of the parallel contact in rung 0002.
When car reached stage 3 sensor conveyor motor should stop and water sprinkler should ON for 10 sec.
At the end of water sprinkler timer, Conveyor will again ON because of the parallel contact in rung 0002.
When car reached stage 4 sensor conveyor motor should stop and water sprinkler should ON for 10 sec.
At the end of water sprinkler timer, Conveyor will again ON because of the parallel contact in rung 0002.
When car reached exit ,car exit sensor will trigger the car wash done indication lamp(O:0/7)
The above explained automatic car wash using PLC is for example only. It may vary from real time.
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View Comments
Hi, the author!
I have some ideas about this particular problem. I think we don't need a timer for any stage here. Each stage will be activated by a sensor while the motor driving the conveyor in a constant speed. Once the car moves pass the sensor, the stage will be deactivated right away and the next stage is on as long as its sensor detects the car.
I think it's simpler and you can see car wash tunnel system on Youtube to check the idea I proposed.
Great, thank you for spreading your knowledge.