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Thread: 4-20ma signal for control valve

  1. #1
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    4-20ma signal for control valve

    I would like to incorporate a valve with a 4-20ma input positioner. Can apex be programmed to send an analog signal?

  2. #2
    Frequent Contributor zombie's Avatar
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    The apex is 0-10V, so you would need a converter. I saw several on Ebay for like 5 bucks.

    Sent from my SM-G965U using Tapatalk

  3. #3
    Regular Vistor
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    is that 4V - 20mA?

    and do you have and EB832?

  4. #4
    Master Control Freak RussM's Avatar
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    Quote Originally Posted by bzofiq View Post
    is that 4V - 20mA?
    No, it's 4mA - 20mA. 4-20mA refers to the use of a current loop for signalling. https://en.wikipedia.org/wiki/Current_loop
    I'm not a Neptune support rep. Please do not send me PMs with technical questions or requesting assistance - use the forums for Apex help. PM me ONLY if the matter is of a private or personal nature. Thanks.

  5. #5
    Regular Vistor
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    Quote Originally Posted by RussM View Post
    No, it's 4mA - 20mA. 4-20mA refers to the use of a current loop for signalling. https://en.wikipedia.org/wiki/Current_loop
    Interesting!

    Wasnt aware of this standard at all. Current based 4-20mA vs. voltage based 0-10V.

    Thanks for the educational link Russ.

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