VQC 20/50 axis drive adjustment
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  1. #1
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    Default VQC 20/50 axis drive adjustment

    G'day all,
    does anyone have the procedure for adjusting the TRA31/41 drives. I have some information on the drives and what the adjustable resistors do but It doesn't tell you the sequence of adjustments. I know that the droop has to be zero and the gain 33 @1000p/m but when I set to that the table shakes so am guessing that some of the others need to be adjusted first to correct this.

    Thanks for any help

    Cheers Bob

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    set those numbers while someone is moving the table in rapid 10%

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    AAhhhh that might be why i'm having problems. I was setting the droop while stationary then setting the gain and moving the table to check. I will try that today thanks mate.

    Quote Originally Posted by wippin' boy View Post
    set those numbers while someone is moving the table in rapid 10%

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    now that you say it the droop may be while sitting still.
    been a while

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    Well I tried it while moving and it is better but the setting is not stable. It fluctuates up and down considerably so that its impossible to tell the actual setting. It must be one of the other resistors that need a touch up to stabalise the setting. Might have another play today and see what I find. Can't make it any worse lol.


    Quote Originally Posted by wippin' boy View Post
    now that you say it the droop may be while sitting still.
    been a while

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    the droop does bounce around a point or two
    if it won't hold settings the drive might be less than desirable

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    the gain is set while making a slow rapid move and is usually rock solid

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    This bounces a bit. That's why I think that something else needs adjusting in some sort of sequence but the information I have tells me not much

    Quote Originally Posted by wippin' boy View Post
    the gain is set while making a slow rapid move and is usually rock solid


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