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Inst Tools > Blog > PLC Tutorials > PLC based Drink Dispenser System

PLC based Drink Dispenser System

Last updated: March 4, 2021 2:13 pm
Editorial Staff
PLC Tutorials
4 Comments
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Develop ladder logic program for PLC-based Drink Dispenser System according to the logic given below,

Contents
PLC Dispenser SystemDispenser PLC ProgramProgram Description:Rung 1:Rung 2:Rung 3:Rung 4:Rung 5:Rung 6:Rung 7:Rung 8:
  1. Press the power button to activate the power supply as shown in the figure.
  2. Put manually glass (or a cup) on conveyor to hold up drink A/B/C as shown in the below figure.
  3. Press a one-button from A/B/C whatever you choose on the available types of drinks (It is toggle type switch).
  4. Press the start button from the local panel.
  5. The glass (or a cup) moves from limit switch 2 to 4 and stops the conveyor when glass reaches the appropriate limit switch, which we select from the A/B/C toggle switch.
  6. Glass (or a cup)  fill by drink A/B/C for 15 sec.(as per glass size) and conveyor again start-up to glass not reach limit switch -5.

PLC Dispenser System

PLC based Drink Dispenser System

INPUTS:

  • I:0.0 – POWER ON PB
  • I:0.1 – POWER OFF PB
  • I:0.2 – START PB
  • I:0.3 – STOP PB
  • I:0.4 – LIMIT SWITCH, L1
  • I:0.5 – LIMIT SWITCH, L2
  • I:0.6 – LIMIT SWITCH, L3
  • I:0.7 – LIMIT SWITCH, L4
  • I: 0.8 – LIMIT SWITCH, L5
  • I:0.9 – SWITCH A
  • I:0.10 – SWITCH B
  • I:0.11 – SWITCH C

OUT PUTS:

  • 0:0.0 – POWER
  • 0:0.1 – CONVEYOR
  • 0:0.2 – SOV FOR DRINK A
  • 03- SOV FOR DRINK B
  • 0:0.4 – SOV FOR DRINK C

Dispenser PLC Program

PLC Dispenser System
Dispenser PLC program

Program Description:

Rung 1:

I: 0.0 and I: 0.1 respectively start and stop press button to control the power supply with latch output.

Rung 2:

Put the glass on L1 (I:0.4) place, which is converted from NO to NC, Press the Drink selection button from A/B/C, respectively enable I:0.9/I:0.10/I:0.11.

Press the Start PB to enable NC (I:0.2) to start the conveyor (O:0.1) until any solenoid valve (O:0.2/O:0.3/O:0.4) not energized and Stop PB(I:0.3) not enable.

After completion of the filling process, conveyor again starts until not reach up to L5 place (I:0.8).

Rung 3:

Conveyor drives the glass up to L2 place as per selected drink type from A. enable the solenoid A (O:0.2) until timer (T:1.DN) bit not enable.

Rung 4:

Fill the drink A for 15 sec (assume constant as per glass size) start the Timer enable the SOV A up to 15 sec and respective timer down bit control the SOV ON/OFF (solenoid A (O:0.2)) state.

Rung 5:

Conveyor drives the glass up to L3 place as per selected drink type from B. enable the solenoid B (O:0.3) until timer (T:2.DN) bit not enable.

Rung 6:

Fill the drink B for 15 sec (assume constant as per glass size) start the Timer enable the SOV B up to 15 sec and respective timer down bit control the SOV ON/OFF (solenoid B (O:0.3)) state.

Rung 7:

Conveyor drives the glass up to L4 place as per selected drink type from C. enable the solenoid C (O:0.4) until timer (T:3.DN) bit not enable.

Rung 8:

Fill the drink C for 15 sec (assume constant as per glass size) start the Timer enable the SOV C up to 15 sec and respective timer down bit control the SOV ON/OFF (solenoid C (O:0.4)) state.

Author: Dhaval Maradiya

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4 Comments
  • ajif says:
    October 22, 2019 at 3:13 pm

    what is the use for i:0:4 (L1)

    Reply
    • Tharun says:
      October 22, 2019 at 5:15 pm

      Limit Switch (L1) is used to detect the presense of empty glass or bottle.

      Reply
  • ajif says:
    October 23, 2019 at 3:29 pm

    what i mean, any toggle switch on (a, b, c ) conveyor will be on. then what is the use for L1 and start button ?

    Reply
  • Kapil Kumar says:
    June 21, 2020 at 12:11 pm

    Sir foundery moulding machine ka ladder logic bniya

    Reply

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