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Thread: Can I programm this task? Level and salinity

  1. #1
    Join Date
    01.07.2010
    Posts
    29

    Default Can I programm this task? Level and salinity

    Can I programm this task?
    Socket 1: freshwater pump
    Socket 2: seltwater pump

    Level sensor turn on both Socket (1 and 2)

    If sensor salinity (conductiv) >45 then Socket 2 (seltwater) turn off

    BR
    Andrey

  2. #2
    Join Date
    07.06.2009
    Posts
    738

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    logic 2 => level 1 AND decrease salinity attach logic2 to socket 2
    logic 1 => level 1 AND increase salinity attach logic 1 to socket 1

  3. #3
    Join Date
    01.07.2010
    Posts
    29

    Default

    tks a lot

  4. #4
    Join Date
    20.02.2009
    Location
    Copenhagen - Denmark
    Posts
    9

    Default

    Quote Originally Posted by Blahenazo View Post
    logic 2 => level 1 AND decrease salinity attach logic2 to socket 2
    logic 1 => level 1 AND increase salinity attach logic 1 to socket 1
    Hi Andrey and blahenazo

    This will not work correct. Because there is a minimum Hysteresis around, in Andrey's case 45, where the controller will not trigger conductivity increase or decrease, even if the level sensor is asking for water (hysteresis can not be set to zero on the ProfiLux).

    Another way to do it:

    logic 1 = "level 1" AND "Conductivity Decrease" > attach logic 1 to socket 1

    logic 2 = "level 1" AND "Conductivity Decrease [inverted]" > attach logic 2 to socket 2

    In logic 2 click the "invert" box under the "Conductivity Decrease" field.


    Then you eliminate the hysteresis, because logic 2 will function as "Conductivity Increase" as soon as "Conductivity Decrease" are not true.
    Last edited by tekfreak; 15.10.2010 at 01:44.

  5. #5
    Join Date
    01.07.2010
    Posts
    29

    Default

    tks a lot

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