PLC Programming With Ladder Logic > Case Studies

Water Tank Filling Control Logic

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Benefits of using a PLC program for water tank filling control:

  • It is easy to read, understand, and interpret.
  • The program automatically switches to the next task when it is completed.
  • It can be used to fill a tank in multiple locations.

Drawbacks of using a PLC program for water tank filling control:

  • It is expensive because it requires sensors that scan the level in the well and transmit data back to the computer. - The data must be downloaded by hand every time it is received.

This is an example of an Air Water Tank, which can be used for simple tasks such as watering lawns. The tanks are designed to be used in the air and only need a small amount of water to get started.

  • A tank sensor: This is used to measure the level of water in the tank.
  • Valve controller: This component activates/deactivates a valve based on input from the tank sensor.
  • DC power supply: This component provides power for all electronics involved in the control logic.

A water tank filling control logic is a circuit that monitors the water level in a tank and controls the valve connected to the pipe supplying water into that tank.
When it's time to add water to the reservoir, a signal is sent down the wire and turns on a switch or relay. This will then close off all of the valves until it’s time to release them.
The signal can come from an external sensor, such as temperature or pressure, or it can be controlled by a user input device like a keypad or remote control.

The process is faster and requires less manpower:

  • The process is safer as there is no risk of human error in calculation or filling.
  • It saves time and money as it takes less time to fill up a tank than it takes to monitor a human employee performing the task manually.

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Course Content

  1. Introduction to PLC Programming
    3m 49s

  1. How to do PLC Programming using Ladder Logic
    15m 14s
  2. Installation of RSLogix Micro Starter Lite
    12m
  3. Elements of RSLogix Micro Starter Lite
    15m 32s

  1. How to Programme and Run the Logic
    19m 14s
  2. PLC Programming of OR Logic Gate
    8m 24s
  3. PLC Programming of AND and NOT Logic Gate
    12m 48s
  4. PLC Programming of NAND,NOR and XOR Logic Gate
    16m 28s

  1. Ladder Logic of Push Button Latching
    14m 16s
  2. Ladder Logic of Interlock Circuit
    21m 25s
  3. Trick to Optimize Use of I-O in Ladder Logic
    5m 33s
  4. Ladder Programming of Motor Operation
    13m 58s
  5. Ladder Logic of Motor Forward Reverse Interlock Protection
    20m 35s

  1. How to Use Timer in Ladder Logic
    17m 39s
  2. On Delay Timer in Ladder Diagram
    8m 39s
  3. Off Delay Timer in Ladder Diagram
    11m 15s
  4. Retentive Timer in Ladder Diagram
    12m 11s
  5. Star to Delta Motor Starter in Ladder Logic
    28m 2s
  6. Counter-up with On Delay Timer Logic
    9m 2s
  7. Countdown with Reset Function in Ladder Logic
    12m 31s
  8. Up-Down Counter Logic with Application in Ladder Logic
    9m

  1. Comparator LIM Block in Ladder Logic
    7m 35s
  2. Comparator EQU,LES,LEQ,NEQ,GRT and GEQ Block in Ladder Logic
    19m 34s
  3. Math Operations in Logic
    30m 16s
  4. Move Blocks in Ladder Logic
    10m 3s
  5. Logical Gate Blocks in Ladder Logic
    22m 5s

  1. Decimal - BCD Conversions in Ladder Logic
    15m 41s
  2. Bit Shift Left and Right in Ladder Logic
    14m 1s
  3. Scale Parameters
    20m 41s
  4. Hacks for Ladder Logic
    10m 11s

  1. Water Tank Filling Control Logic
    27m 57s
  2. Chemical Mixing Process Logic
    33m 11s
  3. Traffic Light Signal Control Logic Part - 1
    23m 41s
  4. Traffic Light Signal Control Logic Part - 2
    36m 46s
  5. Elevator Control Logic
    01h 9m 40s

  1. Assignment of PLC Programming With Ladder Logic
    3m 16s

  1. Interview Questions
    7m 9s

  1. Career Guideline
    2m 42s
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