Re: [CAD_CAM_EDM_DRO] driving large DC motor questions

Does you Ikegai have a Tool turret? If so what are you using to index it? I
have an acquaintance that also has that lathe with the Fanuc 5T controls
that he wants me to update to something pc based.
Dan

----- Original Message -----
From: "vinnygenovese" <superman@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Sunday, February 27, 2005 10:15 AM
Subject: [CAD_CAM_EDM_DRO] driving large DC motor questions


>
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> I have just finished converting the X and Z Axis motors on my 1979
> Ikegai FX-25N turning center. I was startled by how much simpler the
> modern RUTEX 90H driver cards are compaired to the original Fanuc 5T
> electronics. My application requires me to be operating at the drop of
> a hat , and what I like about the rutex / PC system I have built is
> that for a few hundred dollars more I can have a backup 90H card ready
> to swap out in seconds.
>
>
>
> I also purchased a Rutex R991H (0-10 V output) to drive the Spindle
> motor. the R90H drive cards do not seem to have enough output to drive
> such a large motor. I also want to have 'electronic gearing'
> capability.
>
> Using the R991H requires me to leave the old Fanuc Vari-speed servo
> drive in place , and that is something I would rather not do, As I want
> all the components in the machine to be easily replacable.
>
>
> my questions are
>
> (1) is there a inexensive (0-10 Volt input ) , 15/20 HP dc drive that
> I could use to 'upgrade' the 25 year old Fanuc 5T vari-speed drive.
>
> (2) If I hook up a 90H card to the spindle motor will the card blow ?
> is there a way to gang together several RUTEX 90H cards to drive a
> larger motor ? or is there a simple amplifier for the 90H DC output ?
>
> (3) also what is the used vari-speed drive worth ? would it pay to
> sell the drive and perhaps the dc motor and buy a VFD/AC motor combo.
> (I only have about $1000 left now that the wife does not know about)
>
> Thank you anyone who responds.
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