Home » Motor Trip Logic using PLC Programming
PLC Tutorials Question For You

Motor Trip Logic using PLC Programming

Programmable Logic Controller (PLC) Questions and Answers

This PLC is being used to start and stop an electric motor, and also to shut it down automatically if any of three “shutdown” conditions occur:

  • Excessive vibration
  • Overcurrent (overload heater contact)
  • High winding temperature

Motor Trip Logic using PLC Programming

Motor Trip Logic using PLC Programming

The status of each shutdown contact is as follows:

  • Vibration contact: closed when okay, opens when vibration becomes excessive
  • Overload contact: closed when okay, opens when overloaded
  • Temperature contact: open when okay, closes when hot

Draw a PLC ladder-logic program to start and stop this motor.

Be sure to make the program latching so that the operator does not have to hold the Start button to keep the motor running.

Answer :

PLC Motor Interlocks

Share Your Answer / Comments

Credits : by Tony R. Kuphaldt – under CC BY 1.0

For More PLC Questions : CLICK HERE

Related Articles

Programmable Logic Controller (PLC) Questions and Answers – 12

S Bharadwaj Reddy

PLC Controls Conveyors ON and OFF Sequence

S Bharadwaj Reddy

What is Ladder Diagram Programming ?

S Bharadwaj Reddy

Practical Process Control System Questions & Answers – 7

S Bharadwaj Reddy

PLC Data Comparison Instructions

S Bharadwaj Reddy

4-20mA Loop Power Supply Questions and Answers

S Bharadwaj Reddy

2 comments

amani April 17, 2018 at 2:34 pm

fantastic title
thanks

Reply
Anthony September 9, 2019 at 3:43 pm

This is indeed a powerful source of information. I am truly humbled.

Thank you

Maphalla MA

Reply

Leave a Comment

This website uses cookies to improve your experience. We'll assume you're ok with this, but you can opt-out if you wish. Accept Read More

Motor Trip Logic using PLC Programming

WordPress Image Lightbox

Send this to a friend