SM-52 Problem with main motor

Discussion in 'Heidelberg Printing Presses' started by Boobo-oobo, Sep 10, 2019.

  1. Boobo-oobo

    Boobo-oobo New Member

    Joined:
    Sep 2019
    Messages:
    2
    Location:
    Croatia
    Hello. I just found this forum today. Im from Croatia and I'm working on a SM-52-2-P.

    It has a problem with the main drive motor, it will not start. When you try to start the machine, it beeps normally, and then when it should start just the motor brake clicks and disengages but the motor will not spin.

    When it boots up it has some INIT and DIA errors, but I dont know what they mean.

    [​IMG]
    20190910_112301
    by Marko Hreščan, on Flickr

    [​IMG]
    20190910_112327
    by Marko Hreščan, on Flickr

    [​IMG]
    20190910_112337
    by Marko Hreščan, on Flickr

    [​IMG]
    20190910_112414
    by Marko Hreščan, on Flickr


    I did check the encoder, and it works fine. The BLT board had some cold solder joints on X3 connector, but that did not solve the issue. I did try to resolder the connectors on the BLT board, but with no luck.

    Does anyone know what to look for next? Or an explanation to the INIT and DIA errors and where to look for a problem?

    Thanks in advance.
     
  2. CHOCK

    CHOCK Senior Member

    Joined:
    Dec 2016
    Messages:
    1,500
    Location:
    Managua,Nicaragua
    Hi sir :
    please do this:
    MSK reports general fault signal; press stops.

    1)The main switch must be turned off and on again!

    2)Overvoltage in 250V / 540V DC intermediate circuit or voltage
    higher than 48 V DC for Brake,

    3)or Brake Faulty , test for mechanical failure or electrical problem.

    4) Mains voltage phase failure

    5)48V DC voltage outside the tolerance range, for Brake.

    Blessing
    superchock@yandex.com
    Mobile + WhatsApp: + 505 8861 1441
     
  3. Boobo-oobo

    Boobo-oobo New Member

    Joined:
    Sep 2019
    Messages:
    2
    Location:
    Croatia
    Thanks for the help. Will try to test and measure that today.

    The motor brake works OK, mechanically and electrically. When we put the hand crank, you can hear a click from the brake and the machine spins freely by hand.
     

  4. CHOCK

    CHOCK Senior Member

    Joined:
    Dec 2016
    Messages:
    1,500
    Location:
    Managua,Nicaragua
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