1. Control Schemes - Agenda
Activity
Estimated Time
1. Agenda 5
2. Learning Objectives
3. Control Schemes 50
BREAK 10
4. Control Modes
5. Control Schemes for Various Processes 40
6. Summary and Wrap-Up
7. Additional Activities
8. Lab Activity
Slide 1
Instrumentation 2 – Session 6

2. Session 6 - Objectives Identify and describe types of control schemes
On/off
Lead/lag
Feedback
Feedforward
Describe a control scheme that allows the following modes
Local manual control
Remote manual control
Local automatic control
Remote automatic control
Cascading control
Match appropriate control schemes to a process
Given a process scenario, design an appropriate process control scheme
Slide 2
Instrumentation 2 – Session 6

3. Boiler System Lead-Lag Control
Slide 3
Instrumentation 2 – Session 6

4. “Free Cooling” Installation
2 75kw Chillers and 1 RH Unit.
Slide 4
Instrumentation 2 – Session 6

5. Local Controller
Slide 5
Instrumentation 2 – Session 6

6. Remote Controller
Slide 6
Instrumentation 2 – Session 6

7. Local and Remote Settings
Slide 7
Instrumentation 2 – Session 6

8. Cascading Controller
Slide 8
Instrumentation 2 – Session 6

9. Match Appropriate control schemes to a process
1. A reactor’s catalyst feed is manipulated due to a predicted load change.
A. On-Off Control
B. Feedback Control
C. Feedforward Control
D. Lead-Lag Control
Slide 9
Instrumentation 2 – Session 6

10. Match Appropriate control schemes to a process
1. A reactor’s catalyst feed is manipulated due to a predicted load change.
A. On-Off Control
B. Feedback Control
C. Feedforward Control
D. Lead-Lag Control
Slide 10
Instrumentation 2 – Session 6

11. Match Appropriate control schemes to a process
2.The liquid in this tank is emptied once it reaches a specific level.
A. On-Off Control
B. Feedback Control
C. Feedforward Control
D. Lead-Lag Control
Slide 11
Instrumentation 2 – Session 6

12. Match Appropriate control schemes to a process
2.The liquid in this tank is emptied once it reaches a specific level.
A. On-Off Control
B. Feedback Control
C. Feedforward Control
D. Lead-Lag Control
Slide 12
Instrumentation 2 – Session 6

13. Match Appropriate control schemes to a process
3. A parallel piece of equipment begins to operate due to an increase in process load.
A. On-Off Control
B. Feedback Control
C. Feedforward Control
D. Lead-Lag Control
Slide 13
Instrumentation 2 – Session 6

14. Match Appropriate control schemes to a process
3. A parallel piece of equipment begins to operate due to an increase in process load.
A. On-Off Control
B. Feedback Control
C. Feedforward Control
D. Lead-Lag Control
Slide 14
Instrumentation 2 – Session 6

15. Match Appropriate control schemes to a process
4. A tank level is manipulated because an error signal has developed.
A. On-Off Control
B. Feedback Control
C. Feedforward Control
D. Lead-Lag Control
Slide 15
Instrumentation 2 – Session 6

16. Match Appropriate control schemes to a process
4. A tank level is manipulated because an error signal has developed.
A. On-Off Control
B. Feedback Control
C. Feedforward Control
D. Lead-Lag Control
Slide 16
Instrumentation 2 – Session 6

17. Identify the Control Scheme
Feedback Control Loop
Feedforward Control Loop
Slide 17
Instrumentation 2 – Session 6

18. Identify the Control Scheme
Feedback Control Loop
Feedforward Control Loop X
Slide 18
Instrumentation 2 – Session 6

19. Identify the Control Scheme
Feedback Control Loop
Feedforward Control Loop
Slide 19
Instrumentation 2 – Session 6

20. Identify the Control Scheme
Feedback Control Loop
Feedforward Control Loop X
Slide 20
Instrumentation 2 – Session 6