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Inst Tools > Blog > PLC Tutorials > Surface Grinding Process using PLC Program

Surface Grinding Process using PLC Program

Last updated: March 4, 2021 3:48 pm
Editorial Staff
PLC Tutorials
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Implement PLC ladder logic for automatic surface grinding process. Grinding process is an example PLC Program using RSLOGIX 500 software.

Contents
PLC based Grinding ProcessStep Conditions:List of Inputs and OutputsPLC ProgramLogic Description

PLC based Grinding Process

Surface Grinding Process using PLC Program

Step Conditions:

  1. Start PB is to start the process.
  2. At initial, Job in sensor should be in ON condition and job out sensor should be in OFF condition.
  3. When job in sensor detects object for surface grinding should turn on conveyor motor to move the object.
  4. When rough sensor detects object, conveyor motor should turn OFF and Rough grinding motor should turn ON for 20s. After the process, Conveyor motor should turn ON automatically.
  5. When fine sensor detects object, conveyor motor should turn OFF and Fine grinding motor should turn ON for 20s. After the process, Conveyor motor should turn ON automatically till job out sensor turn ON.
  6. Packing sensor should turn ON, when job out sensor ON.

List of Inputs and Outputs

PLC based grinding system inputs and outputs

PLC Program

PLC Grinding Logic
PLC based automatic grinding system

Logic Description

RUNG000

Latching rung to operate the system through Master Start and Stop PB.

RUNG001

To save the status of Job in sensor and Job Out sensor, Memory coil is used.

RUNG 0002

Conveyor Motor turned ON when All the sensors are in Home condition.

Rung 0003

Jump Instruction is used to skip the rough grinding  process in any case.

Rung 0004 and RUNG 0005

When Rough sensor detects object, Conveyor motor should turn OFF and  Rough grinding motor will turn ON for 20 sec. After 20 sec, Conveyor motor should turn on automatically.

Rung 0006

Jump Instruction is used to skip the Fine grinding  process in any case.

Rung 0007 and RUNG 0008

When Fine sensor detects object, Conveyor motor should turn OFF and  Fine grinding motor will turn ON for 20 sec. After 20 sec, Conveyor motor should turn on automatically

Program runs continuously until STOP PB is pressed.

Note: In this program, JUMP function is used to skip the rough grinding process and fine grinding process because some objects need only rough or fine grinding or in some maintenance case jump function is used to skip the process.

Conclusion:

The above explained Surface grinding process is for example only.

Author : Hema Sundaresan

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1 Comment
  • Meghavath Jama says:
    March 12, 2023 at 1:49 pm

    Setpoints & Alarms in Control Systems

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