Hitachi seiki vm40 spindle wont go over 3000rpm

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Thread: Hitachi seiki vm40 spindle wont go over 3000rpm

  1. #1
    Member Craig1971's Avatar
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    Default Hitachi seiki vm40 spindle wont go over 3000rpm

    Hi i hope some one can help. I have a Hitachi seiki vm40 with Seikos control, it has Mitsubishi 6000rpm spindle motor and drive. It will not go above approx 2900rpm. No alarms, no load on spindle, no noises. Control working perfectly otherwise. Can some one give me some helpful advice?
    Thanks in advance,
    Craig.

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  2. #2

    Default Re: Hitachi seiki vm40 spindle wont go over 3000rpm

    Do you have a winding's selector? Sounds like you are not getting into the H windings? Also, check the drive parameters? Did this happen all of a sudden?



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    Member cncmakers001's Avatar
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    Default Re: Hitachi seiki vm40 spindle wont go over 3000rpm

    Quote Originally Posted by Craig1971 View Post
    Hi i hope some one can help. I have a Hitachi seiki vm40 with Seikos control, it has Mitsubishi 6000rpm spindle motor and drive. It will not go above approx 2900rpm. No alarms, no load on spindle, no noises. Control working perfectly otherwise. Can some one give me some helpful advice?
    Thanks in advance,
    Craig.
    If it is using frequency inverter, then you can check its setting for highest speed, is it match with 6000rpm speed?
    Or you can check the electronic gear ratio setting.

    http://cncmakers.com/cnc/controllers/CNC_Controller_System/CNC_Retrofit_Package.html


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Hitachi seiki vm40 spindle wont go over 3000rpm

Hitachi seiki vm40 spindle wont go over 3000rpm

Hitachi seiki vm40 spindle wont go over 3000rpm