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Type: Posts; User: GuntisK

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  1. It was the sensor (it became "sticky", most of...

    It was the sensor (it became "sticky", most of the time it would show closed contacts, sometimes return to normal state). Ok- now machine allows to press Machining button. However right after that on...
  2. Thanks Jay, I will recheck both switch and...

    Thanks Jay, I will recheck both switch and wiring. However Im for 99% sure these should be ok. This kind of CNC and machinery is new for me, so there can be somewhat stupid newbie questions from me....
  3. Mitsubishi DWC-110H "110 WIRE BREAKAGE" alarm

    Hello!
    Trying to do some very first cuts with this old machine (year 1988.), unfortunately there occurs this "110 WIRE BREAKAGE" alarm almost right after I push START button. Wire is still intact-...
  4. Funny how it happens, but today I answered on my...

    Funny how it happens, but today I answered on my own question. :D Connection points are from the bottom side of hydraulic block. Didn't thaught about looking there. I'm ashamed of how simple it was....
  5. OKUMA MC-4VA hydraulic connection points (P and T lines)

    Hello everyone! Hope You are going well! :)
    Recently I got some spare time to return to my abandoned projects- this time OKUMA repair. I'm going almost crazy over one particular problem- I can't...
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    Hello Lenebm! Parameters of my machine is in...

    Hello Lenebm!
    Parameters of my machine is in attachements (see pictures). Hope something from that can be useful for You.
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    I can take a photo of my machine parameters (I...

    I can take a photo of my machine parameters (I have QT-15SP with subspindle, but most parameters should be similar for QT-15U) if there is still a need for those.
  8. MAZAK QUICK SLANT 30 parameters, manuals & related questions

    Hello everyone! :)
    There is a chance of getting two repairable MAZAK Quick Slant 30 4-axis lathes. But before making any moves towards them I want to find some more information.:scratchchin: Maybe...
  9. Thread: QT 18 no start

    by GuntisK
    Replies
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    877

    Replace capacitors, the same goes for burned...

    Replace capacitors, the same goes for burned components (I see a diode and two small SMT capacitors near electrolytic caps- change these too, as electrolyte leakage do a damage both to components and...
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    Mitsubishi DWC-110H floppy disc copying

    Hi!
    So a question here- have someone managed to make a copies of program floppies that goes with these machines? I already know that common PC floppy drive can't read these in usual way. Would love...
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    Hello everyone here! :) Previous week bring to...

    Hello everyone here! :)
    Previous week bring to my shop DWC-110H, built 1989, system W7C. Could someone share system reloading procedure? There are three 3.5 floppies with machine. Maybe some of You...
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    No doubt it can be fun part with all that. :D...

    No doubt it can be fun part with all that. :D Fact that there are connectors is good. I have experience with industrial electronic,both repair and retrofitting so there should be no problems.
    SLA...
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    Thanks SteveEx30! ;) One question more- how...

    Thanks SteveEx30! ;)
    One question more- how complicate and time consuming is disconnection of EDM machine from control unit? Are there connectors or everything is hard-wired?
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    Mitsubishi DWC-110H parts weight

    Hello everyone here!
    Recently Im looking on Mitsubishi DWC-110H wire edm (year 1989). Its in working state, comes with all manuals and data carriers (as seller said). I would really like to know...
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    OKUMA BDU-30A manual?

    Hi to everyone!
    Recently I bought an OKUMA MC-4VA machining center, looks a very promising machine. :)Unfortunately servo drives drop an error, first insight in these shows some output transistors...
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    There is a full circuit for DK434 in FR-SE...

    There is a full circuit for DK434 in FR-SE manual. ;)More interesting would be DK456 or BKO-C1877 inner circuit.
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    There is one very simple way to check IGBT...

    There is one very simple way to check IGBT transistors. For that You need to have power supply with output voltage between 12 to 15V. Next thing to have is crocodile wires and light bulb from the car...
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    Check power stage of VFD. Take a look on diode...

    Check power stage of VFD. Take a look on diode rectifier, check those large electrolytic capacitors (they can be in short circuit state. It tends to happen when they became old.). And yes- IGBTs and...
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    Exactly my case. Check LED lights on servo pack...

    Exactly my case. Check LED lights on servo pack and external controller- if they are dim then there is a problems with power. Measure voltage on contactor (phase to phase)- it is very possible some...
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    I have QT15 with sub chuck option. What exactly...

    I have QT15 with sub chuck option. What exactly is the error? I had a bad contactor problem and dead optocoupler in servo driver. After replacing everything works.
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    Thats nice to hear. :)

    Thats nice to hear. :)
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    Statistics on SF-CA card problems

    Hello to everyone here!
    This time something like a little poll. As we all know number one problem in Mazak electronics is VFD. Im interested about SF-CA board that lives in Mitsubishi FR-SF- do You...
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    I have a suspicion it is. If only there would be...

    I have a suspicion it is. If only there would be at least some example available... :scratchchin:
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    The same here- got a QT15 with subspindle that I...

    The same here- got a QT15 with subspindle that I have used only as tailstock. Have a large amount of manuals with machine but nowhere is an instruction on using subspindle. Only difference here is...
  25. Actually there is connection between both power...

    Actually there is connection between both power supply and aging IGBT, but even that's not all (these two are typical problems). IGBT is just like tyres for Your car- it has some resource, different...
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