Page 1 of 3 ESET 225 Assignment 1 Winter 2015

Energy Systems Engineering ESET 225 PLC/Pneumatic Interfacing

Assignment 1 - Silo Simulation Programming Overview Create a PLC program to allow a variety of operator interactions. Due Date Submit your finished a ssignment on E-centennial Assignment 1 drop box, no later than 09:30 pm on February 28, 2015. No assignments accepted after due date. Engineering Technology reception will not accept students

assignments.

Task Create LogixPro file so that the proces will operate as described in the operational requirements detailed on the next page.

Submission Requirements: Create a ladder diagram to meet the operational requirements of this program. Each rung must have comments to explain what it does in the program. (It is possible that many progra ms may have similar or identical program rungs, but there is no way that descriptive comments would be the same for any two people.) Students must use LogixPro simulation software and submit .rsl file in the Assignment 1 drop box on E-centennial before the due date and time. Submitted file other than LogixPro simulation will not be marked. Be sure your name is included in the comments on the first rung of the program. File Naming Convention All files submitted must be named with your first name and last initial, followed by assignment number. For example: Canzo1.rsl If you do not follow this convention, your submission may be deleted. Evaluation: Your presentation will be marked on:

Successful compliance with operation requirements. (60%) Clear and complete comments. (40%)

Energy System Engineering

Page 2 of 3 ESET 225 Assignment 1 Winter 2015

Operational Requirements: Press the START button to start the conveyor motor. With the selector switch in position C [Bypass]:

Boxes will continue through to end of conveyor without stopping.

When the selector is not in position C: Stop the conveyor when the right edge of the box is first sensed by the proximity sensor [I: 1/03]. 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.

Then, if selector is in position B [Manual]: Once the box is full, momentarily pressing START will move t he box off the conveyor and bring a new box into position. Forcing the operator to hold t he Start button down until the box clears the proximity sensor is not acceptable.

Else, when selector is in position A [Automatic]: Conveyor will automatically start, moving full box off the conveyor and bringing a new box into position.

Ensure that the following details are also met:

a) The sequence can be stopped and re-started at any time using the panel mounted ST OP [Normally clos ed] and START buttons.

b) The RUN light will remain energized as long as the system is operating.

c) The RUN light, Conveyor Motor and Solenoid will de-energize whenever the system is halted via the STOP switch.

d) The FILL light will be on while the box is filling. e) The FULL light will energize when the box is full and will

remain that way until the box has moved clear of the proximity sensor.

Energy System Engineering

Page 3 of 3 ESET 225 Assignment 1 Winter 2015

Input / Output Table

START I:1/00 Normally Open pushbutton STOP I:1/01 Normally Closed pushbutton Proximity Sensor I:1/03 Normally Open Level Sensor I:1/04 Normally Open Selector A I:1/05 \ Three position selector switch, Selector B I:1/06 | only one of these three inputs Selector C I:1/07 / can be on at a time. Motor O:2/00 Operates conveyor Solenoid O:2/01 Spring return RUN light O:2/02 FILL light O:2/03 FULL light O:2/04

Energy System Engineering