Analog and Microprocessor-Based Controllers INST 3117

Upon successful completion, the student will be able to:

Safety

• Demonstrate safe working practices in the lab.

Signal Conditioning and Scaling

• Explain the application of high and low select relays, limit relays or function blocks.
• Explain the application of signal reversing relays, amplifying and/or reducing relays, signal summing relays or function blocks.
• Calculate totals using the scaling of signals so that they can be meaningfully computed.

Control Modes

• Explain On/Off control action, single speed floating control (integral) and differential gap control applied to industrial processes.

Controller Modes

• Explain the operation of proportional, integral, derivative (PID) control actions applied to industrial processes.
• Calculate the proportional response based on various deviations, actions and various proportional bands or gain settings.
• Calculate the P+I response given various deviations, actions; PBs and reset settings.
• Explain derivative action including both rate applied to PV and rate applied to error responses to process variations.
• Explain interacting and non-interacting PID algorithms.
• Determine the correct controller actions and the appropriate modes of control for various process installations.

Controller Alignment and Maintenance

• Explain the automatic and manual controller operation including bumpless, balanceless automatic/manual transfer for pneumatic, microprocessor stand-alone controllers and various DCS/PLC systems.
• Explain the operation of remote and local set point and the application of set point tracking and output tracking.
• Perform and test controller alignment on pneumatic field and panel mounted controllers.

Electronic Analog & Microprocessor Based Controllers

• Explain the principles of microprocessor-based controllers using function block programming and/or configuration menus.
• Configure microprocessor-based controllers for typical process applications such as single loop control, cascade control and feedforward control.
• Create a P and ID drawing of a given process application.
• From a P and ID drawing, build a complete control loop to include sensing element, transmitter, controller, recorder, transducer and final control element.

Effective as of Fall 2017