PLC Conveyor Motor Ladder Logic

PLC Programming Tutorials for PLC Conveyor Motor Ladder Logic or Conveyor Belt Control using programmable logic controller (PLC).

PLC Conveyor Motor Ladder Logic

PLC Program for Conveyor Motor

Objective :  The sequential tasks as follows

  1. When START button pressed
  2. Motor will be started
  3. RUN (Green Lamp) indication lamp will be activated
  4. Motor Running, so Box will start Move
  5. Proximity Sensor will detect when the box arrives at other end
  6. Motor will be stopped
  7. RUN (Green Lamp) indication lamp will be de-activated
  8. STOP (Red Lamp) indication lamp will be activated
  9. An Emergency Stop push button will be used to stop the motor at any time.

Relay Schematic :

Conveyor Relay Logic
  • R : STOP Indication lamp,
  • G : RUN Indication lamp,
  • M : Motor,
  • OL : Overload Relay (Motor Protection Relay),
  • LS1 : Proximity Switch,
  • PB1 : Start push button,
  • PB2 : Emergency Stop Pushbutton,
  • CR : Contractor Relay

Operational Sequence :

  • Start button is actuated.
  • CR1-1 closes to seal in CR1 or to latch the start command
  • CR1-2 opens, switching the red stop pilot light off
  • CR1-3 closes, switching the green run pilot light on
  • CR1-4 closes to energize the motor starter and motor
  • The box/package moves, and proximity switch (LS1) detects the box when it reached and de-energize coil CR1
  • CR1-1 opens to open the seal-in contact ( unlatched start command)
  • CR1-2 closes, switching the red pilot light on
  • CR1-3 opens, switching the green pilot light off
  • CR1-4 opens to de-energize the starter coil, stop the motor, and end the sequence

PLC Ladder Logic

Conveyor Belt Control using PLC

If you liked this article, then please subscribe to our YouTube Channel for PLC and SCADA video tutorials.

You can also follow us on Facebook and Twitter to receive daily updates.

Read Next:

PLC Analog I/O and Network I/O

What is Ladder Diagram Programming ?

Example of PLC Counters Program

PLC Energize or De-energize the Outputs

Two Way Switch Logic using PLC

1 thought on “PLC Conveyor Motor Ladder Logic”

Leave a Comment