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Type: Posts; User: GuntisK

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  1. Re: Need help with error code on MC-4VA 201-X Alarm A Servo Amp 2E6 X axis

    As previously mentioned problem is with X axis servo driver. On BL-D**A board I see that red "VR" LED is lit on- from manuals it means that there is a problem with SVC-A board (top one). First check...
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    Re: Okuma mc-4va maintenance manual

    You have mentioned in one of topics that Your machine shows alarm 558- have You solved that? Because of this (I have answered on that topic) You cannot start the spindle.
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    Re: Okuma mc-4va maintenance manual

    There is no such detailed information on spindle drive troubleshooting in Okuma machine service books. You should look in spindle drive manual (Yaskawa Varispeed MT2 if I remember). Manual can be...
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    Re: Okuma mc-4va maintenance manual

    What exactly are You searching for? Almost everything needed are there. Same applies also for electrical circuit diagrams- they are available for free if You search. One thing to keep in mind is that...
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    Re: Okuma mc-4va maintenance manual

    Take a look here: https://cncmanual.com/okuma/okuma-osp-5000/
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    Re: Okuma mc-4va alarm 558 B

    This is incorrect way of repair- base transistor modules should be replaced with new (or used but working) modules. At the same time transistor drivers plus its corresponding power supply side should...
  7. Re: New user looking for advice about buying MC4VA

    As an owner of MC-4VA I can say that without 3ph power line there is no practical sense in buying such machine. Each axis servo motor is approx. 1.2kW, spindle motor power are from 3.7kW to 7.5kW...
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    Re: axis does not move, no red led

    You should give that board to electronics guy for checking. First thing I would do - checking all voltage test points on that board for voltage and ripple (for last one use oscilloscope). From my...
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    Re: axis does not move, no red led

    Underneath this board there is so called base board with transistor module, capacitors and circuit breaker. You should look there. Sometimes these circuit breakers or contactors goes bad. If this is...
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    Re: copying machine software

    There is! But You will need additional hardware- special board that connects between Your flopy drive and PC. It is called Kryoflux. By using it You can make identical copy of Your diskette and it...
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    Re: Okuma LB10 CRT Problem OSP 5020L

    Do You have a spare CRP board? I would try to change it and look for result. As previously mentioned- a photo of startup screen would be helpful.
  12. Thread: mc4va starter

    by GuntisK
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    436

    Re: mc4va starter

    For those who will take a look at that video- please forgive me, I have made a mistake there (video was taken at very late night- perfect condition to make a mistake). For tool offset, when we are at...
  13. Thread: mc4va starter

    by GuntisK
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    436

    Re: mc4va starter

    Hi!
    I uploaded video on Youtube on how I do these setups. Hope it can help You. :)
    P.S. I know for sure there could be better ways on doing this, but for me it works. :) ...
  14. Re: MC4VAE 2561 RS232C ready interrupt time out error

    Congatulations. You see- usually problem could be solved just by changing bits. Somehow forgot about asking for special signs presence at the program start and end, but they are essential.
  15. Re: MC4VAE 2561 RS232C ready interrupt time out error

    Could You please share Your machine Optional Parameter (word) and (bit) screens? It could be parameter related trouble.
    From list of errors: 2561 RS232C ready interrupt time out means the interrupt...
  16. Re: MC4VAE 2561 RS232C ready interrupt time out error

    Have You tried simply PIP ----> >R CN0: ----> press Write (or PIP ----> >R ----> press WRITE )?
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    Re: OSP file floppy 8" to PC

    A problem here is that SHUGART 901 is a single head disk drive whereas OKUMA diskettes are DS/DD (double sided, double density type). This means it is not possible to read them with this unit. In the...
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    Re: Adding an FRP board to OSP-5000

    What type (name) of 3.5'' floppy drives are installed on Your MC-4VA? My machine has this big, old 8 inch drive FDD412A.
    Here is some info on switch settings of FDC and FRP boards. Hope You'll find...
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    Re: Max File size for LB10

    I have seen a specification list papers for older LB10M- there were options for memory 30m (meters) as a standard and 160m as later update. Here is approximate translation for those memory units:...
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    Re: Max File size for LB10

    Take a look in PARAMETER page and find *NC SPEC TABLE* pages. Somewhere there in a bit list should be bits B016, B032 and similar- then take a look on data area- where is 1, that bit is active and so...
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    Re: Okuma LB15 110 Alarm A

    You should check all connections and components that are connected to those big electrolythic caps at the bottom. At top of the drive should be located IGBT transistors (it seems this drive has...
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    Re: Okuma LB15 110 Alarm A

    Ok-I have read first post- DC-link current fault. It is possible some current transformer (or Hall sensor if such is used there) is damaged (or it's circuit). Check all wires and condition of plugs.
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    Re: Okuma LB15 110 Alarm A

    These aren't IGBTs- 100L6P41 is bridge rectifier, and MSG100L41 are thyristor modules. Completely different type of semiconductor device and very specific to test (multimeter isn't a way to go here)....
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    Adding an FRP board to OSP-5000

    Hi!
    Is it possible direct replacement of FDC board (8'' floppy drive) with an FRP board (3.5'' floppy drive) on OSP-5000? Maybe some of You know what is the difference between typical PC floppy...
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    OSP5000 program select method setting

    Hi everyone!
    So, a machine here is MC-4VA, system OSP5000M-G. Trying to load a program slightly bigger in size than buffer allows, and I got on screen this message: 2530 Program buffer owerflow...
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    Re: EMCO Concep Turn 450, no connection to ACC

    Ok- we have tried to start our SIEMENS 840D from control panel with removed ACC PCI card- program start up, show an error 8257 Real time module not active or PCI card not found! (of course- because...
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    EMCO Concep Turn 450, no connection to ACC

    Hi!
    At my work we have EMCO CONCEPT TURN 450 lathe, which started having huge problems a few months ago (since that it stands in corner waiting for a miracle :D ). We can't start the control...
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    Re: OSP5000M-G tool offset setup, MC4-VA

    Hi!
    Sorry for not answering earlier- there were a lot of other things to do. After making a cable, finding appropriate DNC program, making some sort of postprocessor parody and setting correct...
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    Re: OSP5000M-G tool offset setup, MC4-VA

    Thanks! On tool offset screen Z offset numbers are indeed different values for different lenghts.
    P.S. Is there any dowloadable manual available where is complete description of tool setups...
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    Re: OSP5000M-G tool offset setup, MC4-VA

    Yes, but after calling MDI command I move to MANUAL mode, and only then I can set tools using CAL. Too bad a very few words are on tool setiing in manuals- for sure they are not written for dummies....
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