key signature meaning problem in heindelberg sm72

Discussion in 'Heidelberg Printing Presses' started by JosepWibi, Jul 20, 2023.

  1. JosepWibi

    JosepWibi Member

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    hello everyone, can someone please explain what the markings on the sm 74 engine pictures mean
    what is the inverter main motor headle sm 74 there is a sign of the key what causes it. is the motor broken or the inverter
    Thank you.
     

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  2. Beguin

    Beguin Senior Member

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    hello what is the problem with your machine?
     
  3. JosepWibi

    JosepWibi Member

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    hello, thank you for the response,
    When tried to run heindelberg SM 74 engine only runs one round and then stops.and an error sign appears picture below.why?
    what's the problem with the motor or the inverter?
    when I checked the motor it looked okay
    but the KVT on the screen shows the key sign, as drawn.
    Thank you
     

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    Last edited: Jul 22, 2023
  4. Beguin

    Beguin Senior Member

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    hi do you hear the engine brake release.
     
  5. JosepWibi

    JosepWibi Member

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    Yeap
    The engine break/brake is released, the engine rotates only one round. if it is run again, just let go of the brakes. The machine doesn't want to run.
     

  6. JosepWibi

    JosepWibi Member

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    without a engine break, it is executed once a round immediately stops itself. there is a key sign.
     
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