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Analog signal conversion?

Discussion in 'Electrical Engineering' started by BIGEYE, Mar 5, 2004.

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  1. BIGEYE

    BIGEYE Guest

    I have an inverter that outputs a 0 to 20 mA signal in proportion to the
    speed.
    I need a 4 to 20 mA signal. Can the 0/20 be converted somehow?
    TIA
     
  2. SQLit

    SQLit Guest


    Why? The scale will be a bit off but they are anyway. 0=4 and 20=20. I would
    hook it up the way it is and just remember that the low end is off by a %.

    Unless you run the motor at low speeds it wont make any difference. No
    sense making it harder than it needs to be,,, at least that is my opinion.
     
  3. BIGEYE

    BIGEYE Guest

    The signal O/P needs to be accurate as it is used as a motor speed reference
    in a process control loop.
     
  4. sQuick

    sQuick Guest

    How would just the low end be out ??????
    would effect the whole scale, basic maths.

    sQuick..
     
  5. daestrom

    daestrom Guest

    Well, all except the full speed, 20mA point. Basic, basic maths ;-)

    daestrom
     
  6. rjb

    rjb Guest

    There are lots of manufacturers that sell devices to convert anything to
    anything.

    Try Weidmuller, Phoenix......
     
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