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Inst Tools > Blog > PLC Tutorials > Automatic Box Filling System using PLC Programming

Automatic Box Filling System using PLC Programming

Last updated: March 4, 2021 1:27 pm
Editorial Staff
PLC Tutorials
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Write the PLC programming for a continues box filling operation that requires boxes moving on a conveyor to be automatically positioned and filled.

Contents
Automatic Box Filling SystemBox Filling using PLC LogicLogic Description:

Automatic Box Filling System

Automatic Box Filling System using PLC Programming

Develop ladder logic program according to the logic given below,

  1. Energize the RUN status light when the process is operating.
  2. Energize the STANDBY status light when the process is stopped.
  3. Stop the conveyor and energize the standby light when the right edge of the box is first sensed by the photo sensor.
  4. With the box in position and the conveyor stopped, after 3 seconds open the solenoid valve and allow the box to fill.
  5. The filling should stop when the level sensor goes true.
  6. Energize the FULL light when the box is full. The FULL light should remain energized until the box is moved clear of the photo sensor.

Box Filling using PLC Logic

Box Filling using PLC

Logic Description:

Rung 0000:

Start/Stop PB latched with memory B3:0/0.

Rung 0001:

B3:0/0 enabled to turn on Run status light (O:0/0) and Conveyer motor (O:0/1).

The Photosensor is connected in normally closed contact to turn off the outputs when the box reaching photo sensor.

Rung 0002:

Standby status light (O:0/1) should turn ON when the Process is in stop condition.

So Start latch and run status light output are connected in normally closed contact.

Rung 0003:

When the box reaching the photo sensor, the conveyer gets stopped and after 3 seconds interval solenoid valve (O:0/3) is turning ON until level sensor (I:0/3) ON which is connected in normally closed condition.

Rung 0004:

When the Level sensor (I: 0/3) is in ON condition, Full status light output (O:0/4) will ON until the photo sensor goes off (until the box is moved clear off).

Author: Hema Sundaresan

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2 Comments
  • Kapil Kumar says:
    July 2, 2020 at 8:44 pm

    Desa sand moulding machine ka program baniya

    Reply
  • Marilyn Urrea says:
    August 19, 2023 at 1:42 pm

    Are this being true for the Automatic Box Filling System using PLC Programming:
    Number of PLC Inputs Required
    C1 – RUN
    C2 – STANDBY
    C3 – STOP
    C4 – Level Sensor
    Number of PLC Outputs Required
    Y001 – Status Light
    Y002 – Conveyor
    Y003 – Solenoid Valve
    Y004 – Level Sensor
    Number of PLC Timer Required
    T0 – 60 second Timer, 100 ms Time Base. (See K60 Preset Value for Timer)

    Reply

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