komori S128 electrical problem

Discussion in 'Komori Printing Presses' started by brunolobo, Nov 16, 2009.

  1. brunolobo

    brunolobo New Member

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    Sep 2008
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    Location:
    north of portugal
    Hello dear collegues!
    I have a problem in my print shop that is our sprint one colour machine during the day just stops without any reason and apears sometimes in the encoder the error 08 or another times on the inverter the error c10 and we reset them until the next time it stops again. I hope that someone can help us the press in driving us crazy.Cheers thanksl
     
  2. KGM

    KGM Senior Member

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    Location:
    Ireland
    sometimes my komori stops dead and i think it is due to the oil not circulating properly. it only happens first thing in the morning on cold days running at high speed. Quite rare though.
     
  3. carolusquercus

    carolusquercus New Member

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    Location:
    Ohio
    We have that trouble often. It is NORMALLY a catwalk floor gate that has a safety that is not set just right. If we go through the press and jiggle the floor gates we can find the one that caused it and reset it by moving it to a better position and then retighten the bolts/screws. It could also be the safety switches for the ink roller guards and even the door you open to fill your spray powder. It is irritating that the monitor will not show you WHICH switch stopped the press.....but we deal with it the best we can.

    P.S. The oil low warning should have a siren on it if it is low enough to stop your press.
     
  4. KOMORI DEMONSTRATOR

    KOMORI DEMONSTRATOR KOMORI DEMONSTRATOR

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    Hi ,
    Check all nip guards tighten bolts, it could be anything from a vibration to people on running boards causing a loose nip guard to trip. Dose the Press stop dead??? Because of the way some of the nip guards work the fist click stops the press but it has to travel further to light up an error. check nip guards.
     
  5. klecman

    klecman Senior Member

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    Location:
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    Since you are getting error codes on the inverter and encoder, I would suspect a more general electrical problem with the power and control voltages to the press. Check the incoming 3 phase power with the press running at printing speed. If it is below 210, have it raised to 220 but not over 230 volts. Also check the 24 volt DC line, it should be above 22 but not over 28.
    Also check the seating of the connectors in the main control box. Try wiggling the connectors while the press is running to see if you can cause the press to stop.
    If the main motor uses brushes, check their condition. Sparking can cause errors in the electronics. Make sure the press is securely grounded.
     
  6. Loupeyeyed

    Loupeyeyed Senior Member

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    To Komori Demonstator, when you say nip guards what are you talking about? In all of my printing history, I've never heard of one and when you say running boards are you talking about chucker plates?
     
  7. KGM

    KGM Senior Member

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    Wow, nip guards is a very common description.

    It is a safety device between two cylinders at the "nip" point. trips the machine if it is moved.
     
  8. rolandman

    rolandman Senior Member

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    Seriously? youve never heard the term Nip Guard?
     
  9. RichardK

    RichardK Senior Member

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    Nip guards I'm OK with, but 'chucker' plates??

    Go on Loup, give us all a clue. :)
     
  10. klecman

    klecman Senior Member

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    "Chucker Plates" are the name for the diamond plate inspection covers between the units over the transfer cylinders. I don't know where the name came from but it may have meant "Checker Plates" originally.
     
  11. RichardK

    RichardK Senior Member

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    Mystery solved, I can sleep tonight, cheers Klec. :D
     
  12. Loupeyeyed

    Loupeyeyed Senior Member

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    I'm in the U.S.A. All I can think is different terminology. Chucker plates are the decks in between units,(according to my Komori book) Nip guards have never been mentioned but I'm thinking the guard in between the blanket and plate cylinder?
     
  13. packoprint

    packoprint Member

    Joined:
    Jan 2011
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    Location:
    india
    POD problems on my GS 26 year 2001

    hi
    iam from india and i have a Komori GS 26 press very similar to the GS 28 or the GS 228 year 2001.I have imported this press from Japan and now tried starting the press.The POD screen at the delivery fails to show any data with regards the the press all it shows is a message showing screen data not traffering... check.
    Could you please tell me what this means please do help.
    regards
     
  14. controlgraphics

    controlgraphics Senior Member

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    Location:
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    In my troubleshooting experience, I must say that if you get an error code from the encoder (most likely the press speed encoder) or sometimes from the inverter, it means that the system has detected a speed feedback error far above what is allowed and will shot the machine down. Most likely, your encoder is the culprit here, although I’m not sure what the error "8" is exactly. I would start with replacing the encoder. Would be better if you can find out what the error code is for sure.
    www.controlgraphicsusa.com
     

  15. presselectronics

    presselectronics Senior Member

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    Location:
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    Just FYI, error 8 is "sensor error". Check the basics, loose connection at varicam, damaged cable to absocoder etc. Having said all that, usually the only time the sensor (or absocoder ) fails is the bearings. Note the position of the press and pull the absocoder off and check for freedom of rotation. If it turns freely and smoothly, it is probably OK. The varicam, on the other hand, fail regularly.
     
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