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48. Ball Mill Fan Control

Introduction to Allen Bradley PLCs - RSLogix 500 • 1m 31s

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  • 49. Ball Mill Fan and Oil Pump Control

    We will look at the third specification for the program:

    "If the Mill has operated for more than 20 seconds, the fan should remain on until reset by a separate fan reset button, and the oil pump should remain on for an additional 10 seconds after the Mill is turned off."

    We will program the log...

  • 50. Ball Mill Motor Temperature Inter...

    The fourth program requirement requires if the Mill motor temperature goes above 80 degrees C, the mill should be stopped to protect the windings.

    The input from the temperature transmitter will need to be scaled to produce a value in engineering units, in this case, degrees C.

    The “SCALING” in...

  • 51. Logic for Stack Lights

    The final program requirement defines the conditions for which three stack lights should be set.

    In each case, the feed flow rate to the Ball Mill is used to determine the light status.

    The green stack light should be set if the flow rate is between 20 and 75 pounds per minute.
    The red stack ...