Programmable Logic Control - Agenda Activity Estimated Time 1. Agenda 5 2. Learning Objectives 3. Test Review 10 4. Logic in PLCs 40 BREAK 5. Historical Background 6. Reading Ladder Diagrams 30 7. Review Activity 20 8. Summary and Wrap-Up 9. Additional Activities 50 10. Lab Activity Slide 1 Instrumentation 2 – Session 10

Session 10 - Objectives Define terms associated with Programmable Logic Control (PLC): ladder logic diagram Explain the purpose of PLCs: automatic transfer switches sequential control on/off ESD systems integral to DCS system Explain how “ladder logic” applies to programmable logic control. Slide 2 Instrumentation 2 – Session 10

Programmable Logic Controllers Slide 3 Instrumentation 2 – Session 10

Controller Logic Slide 4 Instrumentation 2 – Session 10

Motor Control Center Slide 5 Instrumentation 2 – Session 10

PLC Programming Slide 6 Instrumentation 2 – Session 10

Ladder Logic Diagram Slide 7 Instrumentation 2 – Session 10

True - False True False PLC logic refers to computer instructions that produce on/off commands based on true/false assessments. Slide 8 Instrumentation 2 – Session 10

True - False True False PLC logic refers to computer instructions that produce on/off commands based on true/false assessments. Slide 9 Instrumentation 2 – Session 10

Match From the List production emergency shut-down ratio control hazardous material control PLC’s are principally involved in monitoring: Slide 10 Instrumentation 2 – Session 10

Match From the List production emergency shut-down ratio control hazardous material control PLC’s are principally involved in monitoring: Slide 11 Instrumentation 2 – Session 10

True - False True False One disadvantage of the transition to PLCs is that system documentation became more difficult. Slide 12 Instrumentation 2 – Session 10

True - False True False One disadvantage of the transition to PLCs is that system documentation became more difficult. Slide 13 Instrumentation 2 – Session 10

Match From the List instrumentation technicians mainframe computers distributed control systems motor control centers PLCs now handle functions formerly performed by: Slide 14 Instrumentation 2 – Session 10

Match From the List instrumentation technicians mainframe computers distributed control systems motor control centers PLCs now handle functions formerly performed by: Slide 15 Instrumentation 2 – Session 10

Match From the List in the closed position in their normal position in the open position without gates Ladder logic diagrams generally show contacts and relays: Slide 16 Instrumentation 2 – Session 10

Match From the List in the closed position in their normal position in the open position without gates Ladder logic diagrams generally show contacts and relays: Slide 17 Instrumentation 2 – Session 10