Bridgeport Interact z axis motor Voltage?
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  1. #1
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    Default Bridgeport Interact z axis motor Voltage?

    I have just the base of an Interact. Can a D.C. voltage source be used to drive it? If so what Voltage and Current?

    Y not z axis...
    Russ
    Last edited by rwhb12; 08-24-2019 at 12:40 AM. Reason: Axis mixed up

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    If it's an SEM servo, it should run off of 90 volts, will need need to have the correct pin numbers, probably take a fairly hefty current to run under load. Should be able to find the tech info/manual on the particular servo motor searching around the net.

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    Many thanks is SEM the manufacturer?

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    Welcome, SEM was the servo manufacturer used on at least some of them, if not most (I have an Interact (Bridgeport's name for the Heidenhain-control equipped mills, there were lots of different controls they hung on the hardware over the years) circa 1995, with TNC 2500 controller); Bosch made the driver-boards. I have some manuals for the SEM MT/MTS series motors/encoders, and the Bosch boards. I'm not much of an expert on them, and haven't had to delve into it.
    If you'd like them, sent a PM with your email (they're PDF format). Cheers.

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    Many thanks. I am thinking of playing with a simple DC variable speed drive, so thanks for the info.

    Russ

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    Not to be rude, but why?

    Actual motor control stuff is pretty cheap.

    DC brush servo stuff is simple as hell.

    DC variable voltage output, 100 volts or so, big unregulated supply simple to make. Control is a +-10v tach[in the SEM motor], control puts out a +- 10v signal to the servo amp, they are wired back to back so the servo amp always tries to make zero volts.

    Plugging DC into the SEM motor will make it run, sure, till you hit the stop and destroy the ball screw


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