CE-998
PLC’s - Introduction to Programmable Logic Controllers

Computer Repair Technology

An introduction to electrical safety, basic electrical circuits and components associated with PLC’s. The understanding of Schematic and Ladder diagrams and Input/Output devices is covered. Logic systems and logic expressions are presented to gain an understanding of PLC programming basics.

D. Number of Class Periods and

... Credit Hours:

Three 50-minute-per-week classes for 15 weeks (1 hour of lecture and 2 hours of lab)

2 credit hours

Programmable Logic Controller
Second Edition / By Frank Petruzella / McGraw Hill Publications

David F. English, Jr.

1. Use the resistor color code and component recognition.
2. Be proficient at electronic soldering and terminating wire connections using solderless type connectors.
3. Use a curve tracer to check all types of diodes, bipolar transistors, and field effect transistors.
4. Demonstrate proficiency in using electronic test instrumentation dual trace scopes, frequency counters and function generators.
5. Be proficient at troubleshooting half-wave, full-wave, bridge power supplies. In addition, student will be able to troubleshoot and repair voltage doublers.
6. Prototype multistage analog and digital circuits, check these circuits for normal operation and design and construct circuit boards for these circuits.
7. Design, construct and test digital logic circuits to meet the demands of any four input logic circuits.
8. Understand basic theory and architecture of computer systems.
9. Interact with a computer system to assess its performance.
10. Disassemble and reassemble mechanical components of computer systems and adjust for proper operation.
11. Isolate system malfunction by relating program execution to specific groups of circuits.
12. Use system software to generate, operate and maintain program logos to identify failed system components.
13. Understand power systems.
14. Isolate data communications system faults to specific subsystems.

1. To listen and speak effectively
2. To write correctly and effectively
3. To apply appropriate mathematical procedures and quantitative methods.
4. To identify and logically analyze problems and issues and propose and evaluate solutions.

The student will understand how electrical safety and basic electrical circuits are used with PLC’s. The student will be able to demonstrate how schematic and ladder diagrams are used to program Logic controllers. The student will be able to write and program basic PLC functions.

Minimum of twelve lab reports due - 50 percent
Two comprehensive exams – 50 percent
Exam 1 – at end of week eight
Exam 2 – at end of week fifteen

Topics:
Weeks 1 to 3 – Basic Electrical Concepts
a. Electrical safety
b. Schematic diagrams and symbols
c. Ladder diagrams
d. Input/Output components
e. Relays
Weeks 4 to 7 – Computer Logic and Numbering Systems
a. Binary logic
b. And, or, and not functions
c. Numbering systems
d. Boolean algebra
e. Logic expressions
Weeks 8 to 15 – PLC Programming Basics
a. Memory types
b. Relay type instructions
c. Programming languages
d. Addressing and branch instructions
e. Programming applications – 3 examples

Topical Outline - Weekly Topics:
1 -- Safety, Schematics, and Symbols
2 -- Ladder Diagrams and Components
3 -- Input/Output Components, Mechanical and Sold State Relays
4 -- Binary Logic, AND, OR, and NOT function
5 -- Numbering Systems and Boolean Algebra
6 -- Logic Expressions and Ladder Diagrams
7 -- PLC Programming
8 -- Program (lesson 1) and Exam on weeks 1 to 6
9 -- Memory Concepts, PLC Operation Program (lesson 2)
10 - Relay – Type Instructions, I/O Program (lesson 3)
11 - Programming (lesson 4)
12 - Programming Instructions Program (lesson 5)
13 - Move Instructions Program (lesson 6)
14 - Troubleshooting and Maintenance Program (lesson 7)
15 - Program Applications (3 examples) and Final Exam on weeks 8 to 14