Question

Circle or fill in the correct response. Unless otherwise noted, all answers will be worth 6 points: 1. A mushroom head push button on an emergency stop circuit typically uses N.O / N.C contacts 2. Multiple start buttons are connected in series/parallel in a motor control circuit 3. Multiple stop buttons are connected in series/ parallel in a motor control circuit 4. If a hardwired circuit required a second load to energize a set amount of time after turning the primary load on, it would use a(n) timer. 5. If a hardwired circuit required a second load to remain energized a set amount of time after turning timer. off the primary load, it would use a(n) 6. Is it necessary to run several wires and use multiple Pushbutton contacts in a PLC controlled system? 7. What is the difference between the timer timing (TT) and Done (DN) bit. 8. Two normally-closed pushbuttons connected in series create not / nor / nand logic. 9.A single N.C. pushbutton creates on / or / not logic. 10. Two normally open push buttons create "or" logic when connected in series/parallel. 11. What is the primary safety feature of a three-wire control circuit that makes it a requirement in many installations? 12. In the space provided below, draw a three-wire control circuit with all numbering and labels. (20pts) N L1 Using the PLC address below to answer questions 13-17, identify the followine Local:1:1.Data.3 Local: 1: L Data, The individual parts are listed as: 13. Terminal number. 14. Slot position. 15. Location of address, adiacent to the controller or remote from the controller. 16. Indicates bit is an input. 17. Data bit. 18. Draw an XIO instruction. 2 19. Draw an XIC instruction. 20. Draw an output energize instruction. 21. Can a control relay be simulated in plc logic programing? 22. How many loads can be placed on the same rung of a hard wired control circuit (ladder Diagram in a 23. How are N.O. and N.C. ladder diagram? ntacts identified when using the numerical cross reference syste ahard-wired control system, how 24. If more than one load must be controlled at the same time in a they connected? (Series or Parallel) a 25. What is the manufacturer of the PLCS used in the class? 26. What is the model of the PLC used in the class? 27. List three advantages of troubleshooting a PLC control system. (write answer on back if needed) 28. What is the advantage of a ladder diagram over other types of electrical drawings? 29. What is the control voltage most commonly used in industry today? 30. What is the name of an organization that lists construction standards for electrical components? 31. What revision/firmware version is currently used for the PLCS in the course, 20 or 24? 32. What is a disadvantage of mechanical components as opposed to solid-state components?

Answer 1

Circle or fill in the correct response. Unless otherwise noted, all answers will be worth 6 points: 1. A mushroom head push button on an emergency stop circuit typically uses N.ON.C)co 2. Multiple start buttons are connected in series paralleln a motor control circuit 3. Multiple stop buttons are connected i series parallel in a motor control circuit 4. If a hardwired circuit required a second load to energize a set amount of time after turning the primary load on, it would use a(n) On-delay timer 5. If a hardwired circuit required a second load to remain energized a set amount of time after turning off the primary load, it would use a(n) Off-delay timer. 6. Is it necessary to run several wires and use multiple Pushbutton contacts in a PLC controlled system? NO 7. What is the difference between the timer timing (TT) and Done (DN) bit. 8. Two normally-closed pushbuttons connected in series create not nor) nand logic. 9.A single N.C. pushbutton creates on / or notlogic. 10. Two normally open push buttons create "or" logic when connected in series parallel. 11. What is the primary safety feature of a three-wire control circuit that makes it a requirement in many installations?

(6) It is not necessary to run several wires and use multiple pushbutton contacts in a PLC Controlled system. It is depending on the Application of use.

(7) Difference between TT bit and DN bit: wwwwwwww The TT bit for timer T4:0 (T4:0/TT) is used to turn output O: 5/1 on while timer is timing. The DN bit of timer 4:0 (T4:0/DN) is used to turn on output O: 5/2 when the timerv has completed the timing (ACC PRE) Computer Aided Manufacturing TECH 4/53350 18 has completed the timing (ACC PRE)