This is a PLC Program for the Water filling and discharging process using S7-1200 PLC.
Problem Description
In many industries or plants, there are lots of manual water filling systems are used for water storage.
In the manual system, there are so many disadvantages such as Accuracy, time delay problems, loss of liquids, and Time consuming.
And due to the manual system, we have to arrange an operator for machine operation. Water wastage occurs due to manual system
Here we are discussing a semi-automatic system.
To solve this problem, we will use S7-1200 PLC for programming.
Here we use two sensors for level measurement, one is for High level and second is for low level.
We use feeding valve (MV1) for filling Cycle of the tank and discharge valve (MV2) for discharging cycle of the tank. Both will be controlled according to sensor logic.
So when the water level goes below low level then feeding valve will turned ON automatically and when water level reaches high and the it senses by high level sensor, then discharging process will be turned ON automatically.
When high level is detected then buzzer will turn ON for alarm purpose. Cycle will stop if user will press stop button from the control panel.
Digital Inputs
Digital Outputs
Note: The above PLC Logic provided for basic idea about application of PLC in Water filling and Discharging Process. The Logic is limited and not complete application.
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View Comments
when TLB2 are in normal position then filling valve is operate and continue this will happen when level is below 0.1% to HI level.