SORD damper motor problem

Discussion in '1-Color and 2-Color Offset Presses' started by Samaraweera, Oct 18, 2023.

  1. Samaraweera

    Samaraweera Member

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    Hello Sir,
    I have damper control motor problem with SORDZ machine. Both motors are run but can't contol the speed. So I checked spv pcb voltage s as marked. +24/ +15/-15 are ok. If you give me an any idea it is great help for me
    Thanks so much
     
  2. CHOCK

    CHOCK Senior Member

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    Hi , you must check if the regulated power supply is in tolerance 0.7% up or down, VERY IMPORTANT!!

    Otherwise, you will Not FIND the problem.

    Let me know.

     
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  3. Samaraweera

    Samaraweera Member

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  4. Samaraweera

    Samaraweera Member

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    DEAR Mr. CHOCK ,

    I'M WAITING FOR YOUR REPLY. PLS HELP ME
    THANKS
     
  5. CHOCK

    CHOCK Senior Member

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    Yes, sir,

    Voltage out of tolerance!!, replace it

    Blessings
     
  6. Samaraweera

    Samaraweera Member

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    Thanks so much Mr,CHOCK
     
  7. Samaraweera

    Samaraweera Member

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    Sir,
    I have a doubt about small step dowvn transformer witch give power to SPV card.
    Could you tell me what is the secondary voltage of the transformer
    Thanks
     
  8. CHOCK

    CHOCK Senior Member

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    If you have wiring schematic diagrams for his machine, you can see it , what is the Voltages in Secondary Main transformer.

    Let me know.

     
  9. Samaraweera

    Samaraweera Member

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    Sir, I have electrical schematics of the machine.
    But unfortunately damper motor control section is missing.
    Thanks
     
  10. CHOCK

    CHOCK Senior Member

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    But you must look x Main transformer, since this electrical device , feed all machine controls ok?

    Blessings
     
  11. Samaraweera

    Samaraweera Member

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    Sir, All other controls are ok including damper
    Roller control pneumatics. Only problem is damper motors
    Thanks
     
  12. CHOCK

    CHOCK Senior Member

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    Your question was : Could you tell me what is the secondary voltage of the transformer

    i did reply, look in the schematic wiring the Voltage VCA step down transformer ??

    Do you have the wiring schematic in PDF, and can indicate the number of schematic wiring diagram ???
     
  13. Samaraweera

    Samaraweera Member

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    Very sorry. Some part is missing in my email
    Main control transfomer voltages are perfect
    As mentioned in the strip on terminal bar.
    I mean that there's small stepdown transfomer for power up spv card.
    I think spv card input voltage is 24v
    Now it is going to 30v
    That 30v comes from abov transfomer via bridge rectifie
    Transfomer primary voltage is 220v
    Secondary is centre tapped and it gives
    12.2v- 0v 11.7v
    Please could I know those voltage values ok for the spv card
    Thanks very much
     

  14. CHOCK

    CHOCK Senior Member

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    Normally the secondary is 28Vca for to feed the circuits

    However, has been changes in the circuit of S offset
     
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