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  1. #1
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    Join Date
    Apr 2006
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    5

    Question Hitachi Seiki crazy Z axis!

    Hello people,

    I have this old Hitachi Seiki Model 4NE-600 that has a alarm 420 (Z servo) 00015 n0015. When I try to reset the alarm the servo starts running for a second and the alarms come up again. I think I may have to set some parameter on the Z drive to correct the limit on that axis. Actually I have that alarm too. Z drive over limit.

    How can I resolve this problem guys?

    Regards,

    H.Zayas

  2. #2
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    Join Date
    Apr 2006
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    5
    OK, I finally got to write the parameters, what parameter should be entered as default????

  3. #3
    are your sure you need to be playing with the parameters , has someone done something to change them,
    sounds to me like you may be packed up with chips around your limit switches or they're sticking

  4. #4
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    Apr 2006
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    5

    Arrow Reply

    Well, the limit switches are working fine. After an incident we had with the machine, the Z motor was replaced and the Z axis controller board too. After the fix (replacements), the only thing that the machine does is showing this alarm. As I said before, when I reset the alarm, the Z motors starts traveling very fast for one second and then the alarm shows up again. I remember that I had a similar problem with a milling machine before and it was fixed setting the limit parameters.

    PS: Actually the parameter is 1347 on the line 083. What # is supposed to be in this line?

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