SM 52

    • Hi look :
    the sensor ”Storage drum” 2...nB38,
    the sensor ”Reversing drum” 2...nB64,
     
    The print pressure motor is located in the operator side guard - took a pic to show you where it is. It's LM3 - part No. is L2.105.1311. This actually moves the blanket cylinder for different thickness stock the impression cylinder doesn't move. If you are to replace the motor there is a procedure to it otherwise the motor won't match the pressure on the press.
     

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    old school 52 said:
    back cylinder being the impression cylinder
    Click to expand...

    I think you actually mean the blanket cylinder. The blanket cylinder moves via a servo motor not a sensor. Are you having printing pressure issues? If so let me know, i can walk you through the proper setting of this motor once you get a new one.
     
    exheidmech said:
    I think you actually mean the blanket cylinder. The blanket cylinder moves via a servo motor not a sensor. Are you having printing pressure issues? If so let me know, i can walk you through the proper setting of this motor once you get a new one.
    Click to expand...
    Didn't know that. But yes, the motor will initialize but afterword it will not move when prompted. I have to turn it by hand with an allen wrench. This motor is less than a year old.
    Thank You
     
    It’s not normal for a servo to pass the initialization test and then not work afterward. Typically the motor will no longer work if it fails the init test. You can confirm if it passed the test by checking the printing unit screen and see if the selected impression pressure is blinking (CPTronic) or if the selected pressure is still white (CP2000). If it’s still blinking or still white is has failed the test. If it’s not blinking or turned black it has passed. If it has passed and still not working you can try swapping SSK boards and see if this moves your problem to another unit. What is the age and configuration of your machine?
     
    exheidmech said:
    It’s not normal for a servo to pass the initialization test and then not work afterward. Typically the motor will no longer work if it fails the init test. You can confirm if it passed the test by checking the printing unit screen and see if the selected impression pressure is blinking (CPTronic) or if the selected pressure is still white (CP2000). If it’s still blinking or still white is has failed the test. If it’s not blinking or turned black it has passed. If it has passed and still not working you can try swapping SSK boards and see if this moves your problem to another unit. What is the age and configuration of your machine?
    Click to expand...
    I'll have to check Monday. Thanks for the info, I appreciate your help.
     
    This press is a SM 52, 1997 , with CP Tronic.
    When the press is turned on the servo moves about 1/4 turn in each direction, Not as far as the other unit moves. After that it will not move and the cylinder setting number continues to flash. I looked in both control boxes and under the computer screen for SSK boards but I cannot find them. I'm guessing this servo is not getting a complete signal to initialize.
     
    Im guessing that you have a SM52-2 with CP Tronic Compact. Since its a compact machine it does not use SSK boards. Most likely your issue is the motor. Easiest way to confirm that is to remove the motor for the the shaft its attached to. The motor is attached to a bracket, this bracket is held in place by 2 M6 screws. Remove these screws. There is also a set screw that will require a 3mm allen to loosen. You may have to manually turn the motor into a more favorable position to loosen this screw. Once these bolts are out and the set screw loosened the motor and bracket will slide out. Now reboot the press. If still you have a flashing number after the motor initializes you will need to replace the motor.
     
    exheidmech said:
    Im guessing that you have a SM52-2 with CP Tronic Compact. Since its a compact machine it does not use SSK boards. Most likely your issue is the motor. Easiest way to confirm that is to remove the motor for the the shaft its attached to. The motor is attached to a bracket, this bracket is held in place by 2 M6 screws. Remove these screws. There is also a set screw that will require a 3mm allen to loosen. You may have to manually turn the motor into a more favorable position to loosen this screw. Once these bolts are out and the set screw loosened the motor and bracket will slide out. Now reboot the press. If still you have a flashing number after the motor initializes you will need to replace the motor.
    Click to expand...
    Thanks for the info, this motor was replaced a year ago is it unusual for this to fail so soon?
     
    Hi sir
    Best way is
    A)remove the motor, and put in another section
    where the others motors are Function o.k.

    This troubleshooting easy will indicate if the Motor is Good or Faulty !
     
    • Hey old school, never discount the possibility. It's unlikely that a new motor will only last a year, given it was properly installed and there was no inherent issue within, upon receiving it, but hey, you ever buy a kitchen appliances, or yard machine, or toy for your kid, or.....(fill in the blank) failed to work as advertised? Follow the guidance suggested by others.
     
    Its not at all uncommon for these motors to fail in less than a year. As was already mentioned by junker, there are a few variables that the life of such motors are dependent on the biggest of which is correct installation. SM52 is a 100% grease lubricated machine, is any of this grease somehow getting into the motor? Even if all of these variables are perfect, still it is an electrical component that does have a typical failure rate. Usually this is much longer than one year. There is a reason why Heidelberg only puts a one year warranty on electrical parts. You could try to call Heidelberg and if you have the original invoice proving that this was purchased a year ago, possibly they will warranty it. Honestly odds are not in your favor if you installed the part yourself. If you had Heidelberg install the part, i bet they will warranty it for you.
     
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