PLC Sequential problem - container example

PLC Sequential problem - container example - EE369...

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EE369 – Industrial Automation PLC Sequential Practice Problem (Container example) A container is loaded with 50 items at a loading dock. The loading chute only opens if the container is at the loading dock. Once full, the container is moved forward by a conveyor to the unloading dock where it waits for 1 minute. Once empty, the container is moved back by the conveyor in reverse to the loading dock and the process can repeat. Pressing a N.O. ‘Start’ pushbutton begins the sequence. Once 1000 items have been unloaded, the process comes to a stop. - A sensor detects items filling the container - A N.O. limit switch ‘LS1’ detects if the container is at the loading dock - A N.O. limit switch ‘LS2’ detects if the container is at the unloading dock - The conveyor is controlled by two motor starters, ‘Forward’ and ‘Reverse’ 1. Write a PLC program to control the operation of this sequential process. 2.
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This note was uploaded on 03/21/2012 for the course EE 369 taught by Professor Khan during the Fall '10 term at Mohawk College.

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PLC Sequential problem - container example - EE369...

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