Inst ToolsInst ToolsInst Tools
  • Courses
  • Automation
    • PLC
    • Control System
    • Safety System
    • Communication
    • Fire & Gas System
  • Instrumentation
    • Design
    • Pressure
    • Temperature
    • Flow
    • Level
    • Vibration
    • Analyzer
    • Control Valve
    • Switch
    • Calibration
    • Erection & Commissioning
  • Interview
    • Instrumentation
    • Electrical
    • Electronics
    • Practical
  • Q&A
    • Instrumentation
    • Control System
    • Electrical
    • Electronics
    • Analog Electronics
    • Digital Electronics
    • Power Electronics
    • Microprocessor
  • Request
Search
  • Books
  • Software
  • Projects
  • Process
  • Tools
  • Basics
  • Formula
  • Power Plant
  • Root Cause Analysis
  • Electrical Basics
  • Animation
  • Standards
  • 4-20 mA Course
  • Siemens PLC Course
Reading: Motor Feedback Fail Logic in PLC
Share
Font ResizerAa
Inst ToolsInst Tools
Font ResizerAa
  • Courses
  • Design
  • PLC
  • Interview
  • Control System
Search
  • Courses
  • Automation
    • PLC
    • Control System
    • Safety System
    • Communication
    • Fire & Gas System
  • Instrumentation
    • Design
    • Pressure
    • Temperature
    • Flow
    • Level
    • Vibration
    • Analyzer
    • Control Valve
    • Switch
    • Calibration
    • Erection & Commissioning
  • Interview
    • Instrumentation
    • Electrical
    • Electronics
    • Practical
  • Q&A
    • Instrumentation
    • Control System
    • Electrical
    • Electronics
    • Analog Electronics
    • Digital Electronics
    • Power Electronics
    • Microprocessor
  • Request
Follow US
All rights reserved. Reproduction in whole or in part without written permission is prohibited.
Inst Tools > Blog > PLC Tutorials > Motor Feedback Fail Logic in PLC

Motor Feedback Fail Logic in PLC

You will learn the motor feedback fail logic in PLC which initiates an alarm signal if the motor was not started in 5 seconds.

Last updated: December 23, 2022 5:07 pm
Viral Nagda
PLC Tutorials
3 Comments
Share
3 Min Read
SHARE

You will learn the motor feedback fail logic in PLC which initiates an alarm signal if the motor was not started in 5 seconds.

Let us understand the logic written for detecting motor failure and stopping the system.

A start pushbutton is used to start the motor. A stop button is used to stop the motor. After pressing the start pushbutton, the motor will be started but due to any other reasons if the motor was not started in 5 seconds then initiate an alarm.

This logic is basically divided into four rungs.

Motor Feedback Fail Logic in PLC

Motor Feedback Fail Logic in PLC
PLC Motor Feedback

Let us understand the flow of each rung one by one:

  1. Start button and stop button are used as PLC inputs. The motor is the digital output. Start button is NO contact and stop button is NC contact. On pressing start button, the motor will start and latch in parallel with start button. This is written in first rung
  2. In the second rung, we check for motor feedback after motor turns ON. If feedback is not received after 5 seconds, then the alarm timer will turn ON.
  3. In the third rung, the alarm timer output turns on the alarm bit and latches it. As soon as this happens, the first rung is cut off due to alarm contact, and the motor turns OFF. Now, the motor will remain OFF as long as the alarm is ON.
  4. In the fourth rung, the alarm reset input is used to reset the alarm. As soon as the alarm is reset, the motor path will again become open for operation in the first rung. Then, after pressing start button, the cycle repeats.

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

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

Read Next:

  • Automation Documents
  • Delta PLC & VFD Modbus
  • Compare PLC and SCADA
  • PLC and DCS System Checks
  • DCS System Maintenance
Don't Miss Our Updates
Be the first to get exclusive content straight to your email.
We promise not to spam you. You can unsubscribe at any time.
Invalid email address
You've successfully subscribed !

Continue Reading

Timers in PLC Programming – Siemens Tia Portal Tutorials
Siemens PLC Tia Portal – OB100 Start-up Organization Block
What is Thin Client in SCADA? – Purpose, Advantages
Difference Between CompactLogix and ControlLogix
Control Two Motors in Sequence after Time Delay – Circuit, Operation
Automated Garage Gate Control – PLC Ladder Logic
Share This Article
Facebook Whatsapp Whatsapp LinkedIn Copy Link
Share
3 Comments
  • Supriadi says:
    December 25, 2022 at 8:09 pm

    how can the timer work while not getting power supply

    Reply
  • Deen says:
    December 30, 2022 at 9:26 am

    Is #Motor_Fb tag in rung 2 a PLC input?

    Reply
    • Editorial Staff says:
      December 30, 2022 at 2:52 pm

      Yes, motor running feedback from substation/mcc.

      Reply

Leave a Reply Cancel reply

Your email address will not be published. Required fields are marked *

Stay Connected

128.3kFollowersLike
69.1kFollowersFollow
210kSubscribersSubscribe
38kFollowersFollow

Categories

Explore More

PLC Analog Input Scaling
PLC Program for Daily Production Record
Things to Take Care of When Designing SCADA System
PLC Compressor Control Ladder Logic
Sink or Source? Normally Open or Normally Closed?
Single-acting Cylinder OR Logic Operation (PLC and Sensors)
#18 PLC Best Practices – Store PLC Hard Stop Events from Faults
GET Command – Siemens PLC-to-PLC Communication Project

Keep Learning

Lights with Adjustable Timers PLC Programming

Flip-Flop PLC Programming: Lights with Adjustable Timers

PLC Programming Best Practices and Tips

PLC Programming Best Practices and Tips

PLC Conveyor Forward and Reverse Logic

Advanced PLC Conveyor Control: Forward and Reverse Rotation

STAR DELTA Starter PLC Logic

STAR DELTA Programming using PLC Controller

Traffic Barrier Control

PLC Programming for Traffic Barrier Control

PLC Technique for IO Mapping

PLC Techniques for I/O Mapping

PLC Data comparison instructions

PLC Data Comparison Instructions

PLC FBD Example for Tank Liquid Heating Control by Steam Flow

PLC FBD Example for Tank Liquid Heating Control by Steam Flow

Learn More

quadruple block valve

What is Safety Instrumented Functions ?

Car Lifts

Car Lifts – Choosing the Right One for Your Mechanic Shop

Fail Safe Switch Circuit

Basics of Fail-safe Circuits

Optical Level Switch Principle

Optical Level Switch Working Principle

Induction Motor Operating Characteristics

Magnatic Level Indicators Working Animation

Magnetic Level Indicators Working Animation

Drum Level Compensation of DP Transmitter

Drum Level Compensation and Range Calculation of DP Transmitter

Industrial Automation Systems

Remote Functions in Industrial Control Systems (ICS)

Menu

  • About
  • Privacy Policy
  • Copyright

Quick Links

  • Learn PLC
  • Helping Hand
  • Part Time Job

YouTube Subscribe

Follow US
All rights reserved. Reproduction in whole or in part without written permission is prohibited.
Welcome Back!

Sign in to your account

Username or Email Address
Password

Lost your password?