SM74-4 L

Discussion in 'Heidelberg Printing Presses' started by Indry1978, Apr 15, 2019.

  1. Indry1978

    Indry1978 Member

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    Hi expert
    I have problem with our SM 74-4 L it's can't run, inching and crawling speed is okay. But if we start run before reach 2600 SPH it's suddenly stop. I try clean the belt I thought it's slip. But after we do it still the problem occurs.
     
  2. turbotom1052

    turbotom1052 Senior Member

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    is this press a perfector?
     
  3. Indry1978

    Indry1978 Member

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    No, it's straight
     
  4. junker1984

    junker1984 Senior Member

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    It comes to a hard stop? What about error codes?
     
  5. Indry1978

    Indry1978 Member

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    MOT 7F7F dyn test
     
  6. junker1984

    junker1984 Senior Member

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    "induced motor voltage stays below the setpoint values ". May I suggest you check your incoming voltage, and the outputs of your secondary transformer?
     
  7. Indry1978

    Indry1978 Member

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    Okay then I ask our electrician to check it...thanks for the suggestion
     
  8. Mathew

    Mathew Senior Member

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    Hi,
    Check the belt, it may slip over the pulley because of oil and dirt. Clean belt and pulley with washup solution and apply anti-set off powder on belt. It absorbs oil and drop off from the belt when get dry.

    Good luck,
     

  9. Indry1978

    Indry1978 Member

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    Location:
    indonesia
    Hi guys ...thanks for the advice....and sorry about late reply.
    The problem already solve. I replace the motor brake encoder, and the machine starts run....
    So if there's you guys find same problem with me you can check it first...
     

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