Programmable Logic Controllers

This module provides a general overview of PLCs and their application in wind turbines. An introduction to ladder logic is presented and the most common types of PLC signals are covered with an emphasis on practical application. This module also covers math functions, PID control and PLC communications, as well as maintenance and troubleshooting of PLCs. Laboratory projects are completed using PLCLogix 500 simulation software.  This PLC software features a 3D wind turbine simulator that enables you to run, test, and debug ladder logic programs and simulate the operation of a PLC-controlled wind turbine.

Learning Outcomes

Upon completion of this module you will be able to:

  • Define a programmable logic controller (PLC)
  • Explain the purpose of a PLC in a wind turbine
  • Describe the basic function of the I/O system
  • Differentiate between discrete, data and analog I/O
  • Define ladder logic
  • Name the two basic types of PLC counters
  • Explain how data transfer is accomplished using a PLC
  • Name four PLC math functions
  • Describe the purpose of PLC analog control in wind turbines
  • List six safety considerations for PLC systems
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