SM52 double sheet detector problems

Discussion in 'Heidelberg Printing Presses' started by Edgar Gomez, Oct 26, 2017.

  1. Edgar Gomez

    Edgar Gomez New Member

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    Location:
    Ventura, CA
    We are running an SM52 with CPTRONIC-4 console. The press keeps stopping and showing double sheet with only one sheet in feeder. We tried cleaning and adjusting everything and it still does it. Has anybody seen this problem?
     
  2. CHOCK

    CHOCK Senior Member

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    Hi sir
    Hope you are well in union with his family.
    Please retest the Inductive Sensor 1B65 or 1B66 for double sheet detector.
    See if there are voltages in the terminal cables. Loose connectors, broken wires, Dirty connector with oil, etc, or corroded terminal pins.
    or desoldered wires from pins.
    2) Sometimes the belts running in the Feeder are Dirty from under pulley table in the Feeder Clean from dust of paper, and Put a Little
    Lube, use the WD-40.
    3) if everything is Right the signal goes to A/D converter in the processor Board SAK. see if the wires are broken, loose, dirty, or desolder to the board.
    Remember double sheet exist : a)FUK sensor do not detects paper b) FUK sensor detect paper

    Attached :schematic double sheet sensor
     

    Attached Files:

  3. Edgar Gomez

    Edgar Gomez New Member

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    Thank you for your help sir. We will try that and get back to you
     
  4. CHOCK

    CHOCK Senior Member

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    ok let me know
     
  5. DIMA

    DIMA New Member

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    Location:
    Ukraine
    Electromechanical double sheet detector
    Double sheet detector
    Function
    The double sheet detector refers to the following checking devices.
    Double sheet detector on the feeder.

    Double sheet detector on the pulling device
    (see chapter C, Pulling device)

    The double sheet detector on the feeder is provided with two rolls. The bottom roll (Fig. 2 /3) either runs on the sheet stream (standard setting) or is positioned slightly above the sheet surface. If a double sheet occurs, it is turned or lifted. As a result, the upper roll (Fig. 2 /1) turns, thus tripping the sensor (Fig. 2 /5).
    The feeder stops and the electronic control system reduces the press speed to 3,000 sheets/h.

    Standard setting
    Use the handle (Fig. 2 /4) to set the outer ring (Fig. 2 /3) to the grooved ball bearing (Fig. 2 /1).
    Use the control knob (Fig. 2 /6) to set the grooved ball bearing and the outer ring (Fig. 2 /1, 2 /3) to the feed table with the shingled sheets (towards minus), until the grooved ball bearing turns. The clamping piece (Fig. 2 /2) will then no longer cover the sensor (Fig. 2 /5) and a double sheet is detected.
    Turn the control knob (Fig. 2 /6) back by two to three notches (towards plus).
    Note
    The distance between two notches of the control knob (Fig. 2 /6) is 1/100 mm .
     
  6. DIMA

    DIMA New Member

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    check sheet arriving
    sheet must be aligned at the front lay at 268 ° ± 5° .
    if not correct time ,must to make ,basic adjustment of feeder to the printing unit!!!
     
  7. CHOCK

    CHOCK Senior Member

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    Dear sir:
    Fix it ?
     
  8. Johnson Tanoto

    Johnson Tanoto Member

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    Location:
    Indonesia
    Dear Dima,

    Can you tell me how to set double sheet for baumer sensor? What is the picture cause you post have no pictue. Thank you
     

  9. Johnson Tanoto

    Johnson Tanoto Member

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    Jun 2018
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    Location:
    Indonesia
    Dear Sir,

    Thank you for your help, the problem that i got how to install the double sheet sensor and how to adjust it.
     
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