Intro to Digital Control Test # 2 - Agenda Activity Estimated Time 1. Agenda 5 2. Test 50 BREAK 10 3. Learning Objectives 4. Introduction: A Brief History 30 5. Analog vs. Digital 20 6. Conversion 40 7. Summary and Wrap-Up 8. Additional Activities 9. Lab Activity Slide 1 Instrumentation 2 – Session 9

Session 9 - Objectives Explain the purpose of digital control In general terms, describe the difference between analog and digital controllers Define the following terms associated with process control schemes: analog D to A discreet controllers A to D DCS converter PLC multiplexer input demultiplexer output In general terms, describe how a digital controller transmits an output signal to an analog final control element. In general terms, describe how an analog controller transmits to a digital controller   Slide 2 Instrumentation 2 – Session 9

Early Automation Slide 3 Instrumentation 2 – Session 9

Analog Electronic Instrumentation Slide 4 Instrumentation 2 – Session 9

Early Computer Control Slide 5 Instrumentation 2 – Session 9

Distributed Control Systems Slide 6 Instrumentation 2 – Session 9

Programmable Logic Controllers Slide 7 Instrumentation 2 – Session 9

Exhibit 1: Schematic view of MUX/ DEMUX To Field Devices Controller MUX Field Inputs Slide 8 Instrumentation 2 – Session 9

Analog and Digital Instruments Slide 9 Instrumentation 2 – Session 9

Analog and Digital Signals Slide 10 Instrumentation 2 – Session 9

Analog and Digital Instruments Slide 11 Instrumentation 2 – Session 9

Analog and Digital Signals Slide 12 Instrumentation 2 – Session 9

Digital Controller/Control Valve Connection Set Point Actual Process Value D/A Control Valve I/P Slide 13 Instrumentation 2 – Session 9

Signal Transmission from a transmitter to a Digital Controller Electrical Transmitter A/D Digital Controller/Control Valve Connection A/D Digital Controller P/I Converter Pneumatic Transmitter Slide 14 Instrumentation 2 – Session 9