UTPA STEM/CBI Courses/CAM/PLC Lab 01

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Course Title: CAM

Lecture Topic: PLC Programming # 1

Instructor: Kevin Lee

Institution: UTPA/ MANE

Backwards Design[edit | edit source]

Course Objectives

  • Primary Objectives- By the next class period students will be able to:
    • Understand ladder logic and wiring motor for CW and CCW motion.
    • Wiring a motor that opens a garage door up and down.
  • Sub Objectives- The objectives will require that students be able to:
    • Understand PLC structure
    • Understand Ladder Logic
    • Identify necessary components
    • Wiring a motor that can rotate CW and CCW.
  • Difficulties- Students may have difficulty:
    • Understanding PLC architecture
    • Writing a ladder logic
    • Wiring a motor
  • Real-World Contexts- There are many ways that students can use this material in the real-world, such as:
    • Garage door opener
    • Radar rotating control
    • Solar cell aim to the Sun.

Model of Knowledge

  • Concept Map
    • How to write a ladder logic
    • Identify flow chart
    • Identify input
    • How a motor works
    • Electric wiring
  • Content Priorities
    • Enduring Understanding
      • How to program a PLC
      • Motor control
    • Important to Do and Know
      • Become familiar programming and wiring for a motor control
    • Worth Being Familiar with
      • DC Motor
      • Basic wiring skills

Assessment of Learning

  • Formative Assessment
    • In Class (groups)
      • Completion of PLC program.
      • Test completed PLC program.
    • Homework (individual)
      • Examples of control systems use a motor direction control.
      • Write a complete program for garage door open and close system.
  • Summative Assessment
    • Demonstrate PLC program.

Legacy Cycle[edit | edit source]

OBJECTIVE

By the next class period, students will be able to:

  • Know how to program a PLC to change a DC motor rotation direction.
  • Know wiring a relay and DC motor to PLC

The objectives will require that students be able to:

  • Understand PLC structure
  • Understand Ladder Logic
  • Identify necessary components
  • Wiring a motor that can rotate CW and CCW.


THE CHALLENGE

Rotate a solar cell angle to face the sun from morning to night.

Design a system that can face radar dome to an angle at an airplane that is approaching.

GENERATE IDEAS

Combine a direction control with time.

MULTIPLE PERSPECTIVES

Study control a motor with conditional statement

RESEARCH & REVISE

  • Start ladder logic with turn on and off motor.
  • Keep add more control so you can change rotation direction.
  • Can you add automatic stop?
  • Do you need emergency stop? If so can you add it?

TEST YOUR METTLE

  • How many inputs and outputs were needed?
  • Were you able to wire relay?
  • What are the considerations for wiring?
  • How can you buy parts?
  • Google some suppliers who sell automation parts.

GO PUBLIC

  • Make multimedia presentation and post to Web.
  • Post completed program
  • Show examples of application

Pre-Lesson Quiz[edit | edit source]

  1. What is a PLC?
  2. When do use a PLC?
  3. How can you change a rotation direction of a motor?
  4. What is normally open and close in a relay?
  5. What is driving voltage in a relay?
  6. Turn on and off a light using a PLC?

Test Your Mettle Quiz[edit | edit source]

  1. Draw ladder logic to change a rotation direction of motor
  2. Explain race effect
  3. What is contact
  4. Explain NO
  5. Design an AND gate ladder logic
  6. Design a latched switch

Knowledge Check[edit | edit source]

Please answer following questions. When you are finished making your selection, click the "Submit" button.

1 What is NO means in PLC input?

Not Operational
Normally Open
No Use
Not Open

2 How many outputs do you need to turn on/off and change rotation direction?

1
2
3
4

3 What was the operating voltage of relay used?

5V
12V
110V
220V

4 How many inputs do you need to make latched on/off switch with emergency stop?

1
2
3
4