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Type: Posts; User: JST

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  1. Replies
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    Ok, maybe this needs a bit more clarity......... ...

    Ok, maybe this needs a bit more clarity......... 'cause I am getting a little confused.

    The 3 phase source is separate from the machine, and is shutting off when the machine stops the spindle?
    ...
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    I do not know. Check the manual, if you have...

    I do not know. Check the manual, if you have access to it. It may have a fast stop pre-set and depends on timing past the stop time to be sure it is stopped before attempting a tool change.

    With...
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    You cannot suppress the back EMF. It is a fact...

    You cannot suppress the back EMF. It is a fact of physics, energy that has to go somewhere.

    What you CAN do is:

    1) Reduce the decel rate, so that there is more time for the control power...
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    When/if the drive slows the spindle, the energy...

    When/if the drive slows the spindle, the energy has to go somewhere, and that somewhere is back in the buss, raising the voltage. It is not certain that you have that problem, but it sure looks like...
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    What is the overvoltage set to? What is your...

    What is the overvoltage set to?

    What is your line voltage during operation when it shuts down?
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