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Thread: ATO/NSW Refill Programming

  1. #1
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    ATO/NSW Refill Programming

    I posted this before but thought I would post again for someone to advise if this can be programmed, and if so, how.

    My ATO and NSW (New Salt Water) are filled from the same RODI unit. My ATO operates through a solenoid controlled by an outlet on an EB8. My NSW container refills from the RODI unit through another solenoid controlled by another outlet on an EB8. Following a water change, the ATO will open but the sump won't fill because the solenoid is open to fill the NSW container. My programming for each outlet is as follows.

    ATO

    Fallback OFF
    Set OFF
    If SmpFil CLOSED Then ON
    If SmpHI OPEN Then OFF
    When On > 008:00 Then OFF
    If T_Salt < 33.0 Then OFF

    NSW

    Fallback OFF
    If NSW_Lo CLOSED Then ON
    If NSW_HI OPEN Then OFF

    Is there a way to allow the ATO to interrupt the NSW refill then have the NSW resume refilling the container without have the refill system shut down? Can this be accomplished with VO's and if so how? Thanks for the help.

  2. #2
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    I think this will do the trick. Make sure to test it in case i screwed up. I am assuming your outlet names are ATO and NSW. You need two virtual outlets. This will pause the NSW for 8 minutes then restart it only when both would have otherwise ran simultaneously (they still will, but only for 1 or 2 seconds).

    NSWstop
    Set OFF
    If Output ATO = ON Then ON
    If Output NSW = OFF Then OFF
    Defer 008:00 Then OFF

    NSWrestart
    Set OFF
    If Output NSWstop = ON Then ON
    Defer 000:10 Then OFF

    ATO
    Fallback OFF
    Set OFF
    If SmpFil CLOSED Then ON
    If SmpHI OPEN Then OFF
    When On > 008:00 Then OFF
    Min Time 060:00 Then ON
    If T_Salt < 33.0 Then OFF

    NSW
    Fallback OFF
    If NSW_Lo CLOSED Then ON
    If Output NSWrestart = ON Then ON
    If Output NSWstop = ON Then OFF
    If NSW_HI OPEN Then OFF




    You might be an engineer if...You have no life and can prove it mathematically.

  3. #3
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    Thanks for the code. I’ll give a shot and see if it works.


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  4. #4
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    Just use the following in the NSW code. I have this same scenario going where I have 5 system that top off and one common NSW barrel. The NSW solenoid just needs turned off if the ATO is on

    if outlet ATO = on then off

  5. #5
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    Quote Originally Posted by Frogfish View Post
    Just use the following in the NSW code. I have this same scenario going where I have 5 system that top off and one common NSW barrel. The NSW solenoid just needs turned off if the ATO is on

    if outlet ATO = on then off
    It's not that simple for his scenario because the NSW barrel does not have a set statement (and shouldn't).

    You might be an engineer if...You have no life and can prove it mathematically.

  6. #6
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    I tried that line but the NSW wouldn’t resume when the ATO was off.


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  7. #7
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    Quote Originally Posted by crs751 View Post
    I tried that line but the NSW wouldn’t resume when the ATO was off.


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    Did you wait 8 minutes?

    You might be an engineer if...You have no life and can prove it mathematically.

  8. #8
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    Your right, I have a VO that I forgot about

    VO_Fill (turns on if water storage bin is low and off when its high)
    Fallback OFF
    If Low CLOSED Then ON
    If High OPEN Then OFF

    Water fill valve
    Fallback OFF
    Set OFF
    If Output VO_FW_fill = ON Then ON
    If Output ATO_T_BS = ON Then OFF
    If Output ATO_T_Nemo = ON Then OFF
    If Output ATO_T_125 = ON Then OFF
    If Output ATO_T_110 = ON Then OFF

    all the ATO outputs are my various ATO valves

    my ATOs are set up with floats but only fill once a day as a safety backup. 4 of my systems are 100+ gallons. One is 30 and I do fill it twice a day.

    This is one of my ATOs

    Fallback OFF
    Set OFF
    If Time 16:00 to 16:29 Then ON
    If Swx12_2 CLOSED Then OFF
    If Swx12_1 OPEN Then OFF
    Min Time 001:00 Then ON
    Min Time 001:00 Then OFF

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