1. 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

2. 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

3. Programmable Logic Controllers
Slide 3
Instrumentation 2 – Session 10

4. Controller Logic
Slide 4
Instrumentation 2 – Session 10

5. Motor Control Center
Slide 5
Instrumentation 2 – Session 10

6. PLC Programming
Slide 6
Instrumentation 2 – Session 10

7. Ladder Logic Diagram
Slide 7
Instrumentation 2 – Session 10

8. 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

9. 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

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

11. 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

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

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

14. 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

15. 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

16. 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

17. 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