New items for final exam

Pre-presentation Self Assessment Activity An indication of your current comfort level to the final exam is your responses to the following 8 practice question set. If there are questions in the set that generate some discomfort, you should return to the White Board Roadmap option on this site and run the partially animated presentation on that topic.

Questions to promote an efficient pre-final exam review of topic to be assessed on the final exam.

1. Wire a N.O. active low TSH and a N.C. active low PSH to an input module of a PLC. Wire an active high motor starter circuit to the output module of the same PLC and then, using ladder (logic) language, program the PLC so that the motor will run only when both limit sensors are in alarm. Include the program, the wiring diagram, and the I/O map as documentation.

2.

Wire a N.O. active TSH and a N.C. active high PSH to an input module of a PLC. Wire an active high motor starter circuit to the output module of the same PLC and then, using ladder (logic) language, program the PLC so that the motor will run when both limit sensors are in alarm. Include the program, the wiring diagram, and the I/O map as documentation.

3. Design an instrument system that includes a programmable controller that will include a normally closed Start Push Button and a normally open temperature high limit sensor.

Review questions for exam topics 4. Redesign your system in question 3 so that the button is wired the opposite way it was in question 1 and the senor has the opposite activity. 5. Write a ladder program for each of your designs in questions 3 and 4. 6. Write a ladder (logic) program rung that will properly execute the following instrument system function diagram. I-6,5 I-6,6 M-03 M-21 I-01 O-3,2 I-0,2 O-3,2 7.

Write a timer ladder (logic) program rung that will make program address, M-01, passive when a programmed override time has been met. 8.

Write a Counter ladder (logic) program rung that will make program address, M-21, active when a FQI has responded a programmed number of pulses.

End of Presentation