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CORK INSTITUTE OF TECHNOLOGY
INSTITIÚID TEICNEOLAÍOCHTA CHORCAÍ
Semester 1 Examinations 2011/
Module Title: Automation Systems
Module Code: MANU
School: Mechanical, Electrical & Process Engineering
Programme Title: Bachelor of Science (Honours) in Advanced Manufacturing Technology Bachelor of Science (Honours) in Process Plant Technology
Programme Code: EAMTE_8_Y EAMTN_8_Y EPPTN_8_Y
External Examiner(s): Mr Kevin McCarthy, Mr Ger Reilly Internal Examiner(s): Mr Michael Murray
Instructions: Answer Question ONE and TWO other questions.
Duration: 2 HOURS
Sitting: Autumn 2012
Requirements for this examination:
Note to Candidates: Please check the Programme Title and the Module Title to ensure that you have received the correct examination paper. If in doubt please contact an Invigilator.
Q1. (a) Draw a block diagram of an I/O bus network and describe FIVE advantages of I/O Bus networks [10 marks]
(b) Describe how distributed control is implemented in the Fieldbus network. [10 marks]
(c) Describe the factors that should be taken into account when designing a human-machine interface. [10 marks]
(d) Describe the architecture of a SCADA Interface. [10 marks]
(e) A production team has designed a system to automate an assembly operation. The associated hardware costs are as follows:
i. Pick and place robot €105,
ii. Vision system €7,
iii. Cameras €1,
iv. Associated hardware €7,
v. Fixtures €45,
It is estimated that maintenance will cost approximately €1,500 per month. Training will cost approximately €12,000.
The new system will free up FOUR employees at an average cost of €27,000 per employee.
Productivity and quality improvements should save €14,000 per year.
The team believe that the system will be used for THREE years.
Given that a payback period of 18 months or less is company policy, determine if the project should be undertaken. [10 marks]
Q4. Describe the operation of a Control system you are familiar with.
Your answer may contain, but is not limited to, information on the following topics:
- Sensors;
- Type of signals used in process measurement;
- Controller design;
- HMI design
- Actuator specification.
- Costs [25 marks]
