PLC Projects ELEX 4430

PROGRAMMABLE LOGIC CONTROLLER ARCHITECTURE

• Describe the architecture and scan sequence of typical industrial PLCs.
• Produce a block diagram of a typical PLC.
• Describe the function of each of the components of a typical PLC.
• Describe the steps in the scan sequence of a PLC.
• Discuss the significance of the scan sequence with respect to instruction placement and I/O latency.
• Describe the types of memory used and the organization of program memory and data tables.
• Describe the data references and data types used in PLC programming.

LADDER DIAGRAM AND BOOLEAN NOTATION

• Design and document sequential and interlock functions using ladder logic diagrams and commercial PLC programming software.
• Develop relay ladder diagram for a logic system using JEDEC symbology.
• Develop a PLC ladder diagram for a logic system.
• Translate ladder diagrams to Boolean statements and vice versa.
• Use commercial software to document a logic system and download to PLC.

BINARY LOGIC SYSTEMS

• Design and document interlock and sequence control systems using ISA. S5.1 binary logic symbols.
• Document combinational logic networks using ISA S5.1 symbology.
• Develop memory elements (latches) and document them using S5.1 symbology.
• Develop complex timing and counting functions and document them using S5.1 symbology.
• Translate binary logic diagrams to PLC ladder networks and/or Boolean language statements.

PROGRAMMABLE LOGIC CONTROLLER FUNCTIONS

• Implement sequence, interlock, and data manipulation functions on a Programmable Logic Controller.
• Implement combinational logic functions on an industrial PLC.
• Implement one-shots, initialization pulses, etc, on an industrial PLC.
• Implement timer and counter functions on an industrial PLC.
• Implement special functions (register manipulation, data conversion, math, etc) on a PLC.

LOGIC SYSTEM DESIGN

• Design interlock and sequence control systems to meet operating specifications for implementation on PlCs.
• Analyze requirements for alarms and interlocks on processes.
• Determine process conditions for fail safe operation.
• Select appropriate sensor, contact, and final element configurations for fail safe operation of trip ad permissive systems.
• Determine the need for bypass circuits for start-up conditions.
• Verify that the operation of an interlock control system meets its specifications.

PROJECT

• Project No. 1 Motor Control
• Create the binary logic diagram to ISA standards and complete I/O (input-output) diagram to industry norms. Design, debug and test a PLC control program for a typical motor start/stop system complete with over temperature and over current interlocks
• Project No. 2 Bottling Line
• Create the binary logic diagram to ISA standards and complete I/O (input-output) diagram to industry norms. Design, debug and test a PLC control program for a simulated bottling line.
• Final Project Dual Pump Water Booster Station
• Create the binary logic diagram to ISA standards and complete I/O (input-output) diagram to industry norms. Design, debug and test a PLC control program for a dual variable speed pump water booster station. The project is a very close simulation of an actual water pumping station complete with alarms, "Hand-Off-Auto" stations, a level transducer (simulated) and float switches (simulated).

Effective as of Fall 2013