Expt3 Ia Lab Silo Simulation 2l5s1f

Silo simulation Objective: Control of Silo simulation Prerequisite Here it is assumed that you familiar with the Logixpro environment and you have successfully solved the exercises on the garage door opener simulation and you are familiar with the basic instructions (XIC, XIO, OTE, OTL and OTU) and addressing scheme of SLC500 PLC from Allen Bradley. Description of the simulation You can go through the video file provided by the course teacher The Silo Simulation From the Simulations Menu at the top of the screen, select the Silo Simulation

Exercise #1 -- Continuous Operation Completely design and de-bug a ladder control circuit which will automatically position and fill the boxes which are continuously sequenced along the conveyor. Ensure that the following details are also met: • The sequence can be stopped and re-started at any time using the mounted Stop and Start switches. • The RUN light will remain energized as long as the system is operating automatically. • The RUN light, Conveyor Motor and Solenoid will de-energize whenever the system is halted via the STOP switch. • The FILL light will be energized while the box is filling. • The FULL light will energize when the box is full and will remain that way until the box has moved clear of the prox-sensor. Exercise #2 -- Container Filling with Manual Restart Alter or re-write your program so that it incorporates the following changes: • Stop the conveyor when the right edge of the box is first sensed by the proxsensor. • With the box in position and the conveyor stopped, open the solenoid valve and allow the box to fill. Filling should stop when the Level sensor goes true. • The FILL light will be energized while the box is filling. • The FULL light will energize when the box is full and will remain that way until the box has moved clear of the prox-sensor. • Once the box is full, momentarily pressing the Start Switch will move the box off the conveyor and bring a new box into position. Forcing the operator to hold the Start button down until the box clears the prox-sensor is not acceptable.

At the end of the lab session your program to AUMS and delete the programs from the system. Failure to do so may lead to negative marking. Questions 1) What is difference between RSLOGIX and LOGIXPRO? 2) What is the name of the PLC used in LOGIXPRO simulator? 3) How are PLCs classified based on their I/O configuration. 4) Explain the addressing scheme of SLC 500 5) Explain the meaning of the instruction XIO 6) Explain the meaning of the instruction XIC 7) Explain the meaning of the instruction OTE, OTU and OTL 8) What is meant by PLC SCAN? 9) What is meant by input image and output image? 10) Draw the block diagram of a PLC 11) Mention the two ways of programming a PLC 12) What is the difference between a PLC and PC? 13) Can a PC be used like a PLC if so what is the configuration called? 14) What are the advantages of PLCs over relay s? 15) Why are OTU and OTL called retentive instructions? Explain with an example. 16) Explain the principle of operation of a capacitance proximity sensor 17) Write a program which will perform the common electrical function of controlling a light from two different locations. Assume that you have a toggle switch (I:1/00) and switch (I:1/01) to control Lamp (O:2/00)....