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  1. #1
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    Sep 2006
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    89

    Mori Seiki Fanuc O-T Error EX357

    Hello again.

    I have a Mori Seiki SL-25B5 that gives me an error "EX357 Turret Index Time Up" whenever I try to index the turret.

    Any ideas?

    Thanks,

    Heath

  2. #2
    Gold Member
    Join Date
    Feb 2009
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    5921
    If the turret pops out, and doesn't rotate, probably the unclamp switch. If it rotates then goes back but times out, it could be the clamp switch. You really need to check the I/O signals and see whats not right. If the machine sat for a long time, my guess is it's a clamp switch not popping out with the turret. A little WD40 works well. Those early machines do eat Bestac Boards, which is a small relay card. They are pretty cheap.

  3. #3
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    Well,
    the turret pops out. The error comes up as soon as you let go of the index button.
    The only switches I see on the turret are on the tail. One axial and several radial. They are are proximity switches.
    What are the addresses for the I/O's?

  4. #4
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    Mar 2008
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    30
    Check dgn21.2 for turret clamp fin. After turret pops out, dgn21.2 should turn to "0". If remains as "1", turret rotation is not possible. Proximity switch label as SQ14 or LS14 may be bad. Good Luck!

  5. #5
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    Quote Originally Posted by dbstream View Post
    Check dgn21.2 for turret clamp fin. After turret pops out, dgn21.2 should turn to "0". If remains as "1", turret rotation is not possible. Proximity switch label as SQ14 or LS14 may be bad. Good Luck!
    dgn21.2 does indicate that LS14 is working correctly. (changes state)

  6. #6
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    Mar 2008
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    Check dgn48.4 for turret index start output which turn on bestact relay KR15(inside electrical cabinet) & solenoid valve YV81(mounted above index oil motor). Either KR17 & YV91 or KR18 & YV90 should turn on for rotational output.

  7. #7
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    dbstream,
    On the bestact board, which ones are KR15, 17, and 18?
    I have no electrical prints.

    dgn48.4 does change.

  8. #8
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    Mar 2008
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    KR15 is sixth "led" counting from the top. See attached
    Attached Files Attached Files

  9. #9
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    89
    Quote Originally Posted by dbstream View Post
    Check dgn48.4 for turret index start output which turn on bestact relay KR15(inside electrical cabinet) & solenoid valve YV81(mounted above index oil motor). Either KR17 & YV91 or KR18 & YV90 should turn on for rotational output.
    Been a while but I am back on the Mori. 48.4 and KR15 both change state. KR17 & KR18 do not turn on at all.

    Does anyone know anything about timers in the parameter list?

  10. #10
    Gold Member
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    Feb 2009
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    5921
    You need to check the physical output of the KR15. The led on the board is just the control voltage to turn on the relay. It's the relays that fail themselves. All timer descriptions are in the back of the ladder diagram.

  11. #11
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    Sep 2006
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    Well I got it.
    The timers where set to 00000000.
    Neet, huh?

    Thanks again for the help fellas! I appreciated it.

    Heath

  12. #12
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    Join Date
    Jun 2014
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    2

    Re: Mori Seiki Fanuc O-T Error EX357

    Hello, a new member here. We just started to have a problem with one of our Mori Seiki that's been in use for over 9 years now. We did take it out of service for a short time when we got new replacement machines, but had to put it back in service when one of our Okuma machines went down. It was running fine for quite a while, but it is just now showing the message EX 0357 Turret Index Time out. The program starts ok, does the rough passes, but when it indexes the new tool for the final pass, the message appears. Our lead operator also found these alarm messages in the history:

    749 S-spindle LSI Error
    500 Overtravel +Z (2 times)
    400 Servo Alarm - X axis overload
    414 Servo Alarm - Z axis detected Error
    751 Spindle - 1 Alarm Detect (3 times)
    414 Servo Alarm - X axis detect
    750 Spindle Serial Link Error (3 times)
    501 Over Travel -X

    The serial link error may have been caused when I was checking the cables in the back. Any help would be greatly appreciated. Thank-you.

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