Programmable Logic Controllers and Human Machine Interface (HMI) INST 3112

Upon successful completion, the student will be able to:

Safety

• Demonstrate safe working practices in the lab.

Relays & Ladder Logic

• Explain electrical relay types including on-delay and off-delay timers with ratings for both AC & DC
• Build circuits using on-delay and off-delay timers and relays
• Troubleshoot circuits that include on-delay and off-delay timers and relays

Communication Basics

• Explain various communication network topographies, standards and protocols such as RS232, RS485, Modbus and Ethernet to communicate with PLCs and HMIs.
• Explain the Open Systems Integration (OSI) model to modern communication systems.
• Configure a typical SCADA system with I/O.
• Explain PLC system grounding requirements, independent from electrical grounding requirements.

Programming of PLCs using Boolean Instructions

• Explain the operation of small ('shoebox') PLCs with Boolean programming instructions.
• Program PLCs using Boolean instructions.
• Troubleshoot the PLC software and field circuits.

Programmable Logic Control using Ladder Logic

• Describe the architecture of a PLC such as a Modicon Quantum including various types of I/O modules.
• Program various motor control circuits using ladder logic.
• Wire a PLC to field equipment demonstrating safe wiring practices.
• Explain the difference between 2-wire and 3-wire motor control circuits.

Human Machine Interface (HMI)

• Create an application in an HMI environment.
• Create an I/O database with animation effects to interface with the PLC database.
• Program a single loop level control project complete with trending, pump, mixer, interlocks and alarms.

Effective as of Fall 2017