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Type: Posts; User: rotec

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  1. Replies
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    Re: Okuma LB15 Alarm A SDU 1

    Update: Im actually getting more Fanuc Alarm #2 "excessive deviation of speed" "when the motor speed is largely deviated from the commanded speed"
    I get Alarm 2 more that I get Alarm 8, which I...
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    Okuma LB15 Alarm A SDU 1

    Still playing with this LB15, Its just a hobby machine today, so I'm in no rush to spend big bucks on it. I recently got it running again after replacing a CRPII board.

    But Im still having...
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    Did you resolve the issue, what did you find?

    Did you resolve the issue, what did you find?
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    Re: Problems sending files to OSP5000 over RS-232

    Thank you, good info, I'll give it a try! Question, why would this machine have a BTR installed? I understand its been in play from day 1.
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    Re: Problems sending files to OSP5000 over RS-232

    Then I will set up my parameters and cable for the OSP 5000 and see if have any luck. Do you have any recommendation for the cable wiring config? Same as the LB15 (5000-LG) serial cable?
    Also...
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    Re: Problems sending files to OSP5000 over RS-232

    We purchased the machine 1999 from the original owner who purchased it new in 1981. I understand it was one of the first Okuma lathes commissioned in Australia and certainly the first LS30-N. I'm...
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    Re: Problems sending files to OSP5000 over RS-232

    Algirdas please take a look at my video below. Saves me typing 1000 words!
    The original DB25 is wired but it has never been used. The machine was fitted with a BTR long before we got the...
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    Re: Problems sending files to OSP5000 over RS-232

    FYI My OSP 5000 green screen lathe is year 1981
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    Re: Problems sending files to OSP5000 over RS-232

    Hmmmm well my 5000 green screen 100% does have a wired DB 25pin port on the machine (same as the LB15) and right next to the DB25 there is also a round plug and behind the round plug the BTR is wired...
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    Re: Problems sending files to OSP5000 over RS-232

    With the LB15 all fixed, my next task is to tackle the LS30N coms issue. It's an early 5000 green screen and I'm told it can't use the serial port even though it has one. This is why it has a BTR. is...
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    Re: Problems sending files to OSP5000 over RS-232

    Im digging up an old thread here I know, but Im having a similar issue with my very old green screen OSP5000. Did you resolve this if yes what did you find? Do you use a BTR?
    My machine has a...
  12. Re: 124 ALARM-A stroke end limit cancel 1 (LS30-N OSP 5000 green )

    Algirdas, did you see my update. Take a look at the last posts here, solved.
  13. Re: 124 ALARM-A stroke end limit cancel 1 (LS30-N OSP 5000 green )

    Yep! Because the last Okuma tech left the plugs on one of the boards out of place, I later learned they do this to isolate faults. He fixed that fault then but did not put the plugs back as they...
  14. Re: 124 ALARM-A stroke end limit cancel 1 (LS30-N OSP 5000 green )

    Well done!!!! May I ask how you determined or isolated that chip as being faulty? I resolved my issues too!

    I was being thrown a curve ball because the last Okuma tech during a previous...
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    Re: LB15 Coms "Time out error" resolved.

    I will add here that at one time all my Okumas used to run flat all day 7 days a week, heavy production machines, cutting mainly 4140, deep cuts pushed them hard! They inevitably would break down...
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    LB15 Coms "Time out error" resolved.

    LB-15 with OSP 5000 L-G control.

    Some time ago I started having issues with sending programs to my LB15 to this day I don't know what the cause of this was, one day it started. I could receive...
  17. Re: LB15 5000L-G SBP Monitor message on boot up see attached

    UPDATE:
    This issue was resolved by replacing a faulty circuit board, Okuma LC-30 Opus 5000 II CRP B Board 1911-164-1-1371 J52 XPS-442A

    From an LC-30 lathe but compatible with the LB15, slid it...
  18. Re: 124 ALARM-A stroke end limit cancel 1 (LS30-N OSP 5000 green )

    No! Despite the generous help here I have not yet dug too deep into the issue. The machine is still idle. The machine is currently full of sharp steel chips and frankly I haven't mustered the...
  19. Re: Understanding AC Servo, Encoder, Servo Amp / Drive

    Thanks Al, I took a look at those A-M-C drives they look like they would fit the bill!

    So just to clarify my thinking that the original Okuma BLDC servo motors with new and changed out increment...
  20. Re: Understanding AC Servo, Encoder, Servo Amp / Drive

    Off topic, do you reckon its possible for me to retro fit my old Okuma LB15 lathe using the original BLDC servos only with new incremental encoders on all the servo ends and run new / used BLDC...
  21. Re: Understanding AC Servo, Encoder, Servo Amp / Drive

    yup! I had almost the identical situation! In that I inherited an old robot arm that was originally used to load and unload parts in a cnc lathe we purchased. We never used the arm it just sat...
  22. Re: 124 ALARM-A stroke end limit cancel 1 (LS30-N OSP 5000 green )

    Ok, I'll check this circuit including the OT switches. But if what you are saying is correct then one could simulate this alarm by deliberately engaging the OT switch while the machine is in AUTO...
  23. Re: 124 ALARM-A stroke end limit cancel 1 (LS30-N OSP 5000 green )

    I had left this machine sit till now! But now I have all the service books and the wiring diagrams and I may have another try. Just for a test is there a way to identify the stroke end limit...
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    PROBLEM YASKAWA SERVO DRIVE CACR-SR20BB1BF

    I have a HeidenhainTNC 415B control with an alarm on the Z axis servo. The drive unit is shows on the LED alarm no 1.
    Can some one help with parts or Yaskawa CACR-SR20BB1BF checks. and or is it...
  25. Re: 124 ALARM-A stroke end limit cancel 1 (LS30-N OSP 5000 green )

    "chuck clamp" and "chuck unclamp" both are on

    PAUL: No this is just my camera flash making the LED look on. They are in fact not lit.
  26. Re: 124 ALARM-A stroke end limit cancel 1 (LS30-N OSP 5000 green )

    PAUL: Ok I will check the wiring and the operation of this switch. I will trace the wires fully and check the contact function! (Thanks)
  27. Re: 124 ALARM-A stroke end limit cancel 1 (LS30-N OSP 5000 green )

    If there is the tumbler to switch manual axis movement from rotation knob to arrow push buttons?
    PAUL: Is tumbler the same a switch? In manual mode the arrows and pulse wheel are both on you dont...
  28. Re: 124 ALARM-A stroke end limit cancel 1 (LS30-N OSP 5000 green )

    Hmmmm!

    PAUL: The wiring on the X servo motor we fixed years ago because the terminals on that servo motor were corroded, we chopped them out and soldered the wires together. It may have nothing...
  29. Re: 124 ALARM-A stroke end limit cancel 1 (LS30-N OSP 5000 green )

    thank you, I got it! Just some of my thoughts.

    Typically when the machine does really over travel and hits a limit switch (or is that a soft limit?) one can hold on the over travel key, then...
  30. Re: 124 ALARM-A stroke end limit cancel 1 (LS30-N OSP 5000 green )

    Algirdas, Back at the machine now!

    any of "Stroke end " indicators is on?
    PAUL: No, both these LED are OFF. When the machine starts, the hydraulics are good the, monitor comes up as normal,...
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