Re: [CAD_CAM_EDM_DRO] Question on hobby retrofit of TNC150 control

Dan Mauch wrote:

>
> I have some west amp 6533 servo amps that I just removed from my $750 Tree
> Mill. What you have sounds similar to my old installation. Indeed the
> servo motors should have two heavy gage two wires for the motor power. The
> X axis motor power leads were connected to TBS 1 black and TBS-2 red. The
> tachometer attached on the end of the servo motor connected to TBX pin 4
> black and pin 3 red . The command signals from the computer were term 2 red
> and 3 blk. The shield for these connected to term 9.
> While the information I have is incomplete it does indicate that the encoder
> were connected to the cpu. the +/- 15 was send from the cpu to terminal 2
> and the ground for the above went to term 4.
> If this seems similar to your let me know. I can scan that page and email it
> to you.
> Last there is the possibly that one of the westamp repair facilities may
> have the connection diagrams. Do a google search on westamp servo amp
> repair. Or try calling Fryer Machine Systems . 1-845-878-2500 I found some
> stickers on my old servo amps that had their phone number as the repair
> facility. I bet they would fax you a connection sketch.
> Dan
>
> ----- Original Message -----
> From: "Jon Anderson" <janders@...>
> To: <CAD_CAM_EDM_DRO@yahoogroups.com>
> Sent: Saturday, October 09, 2004 12:28 PM
> Subject: [CAD_CAM_EDM_DRO] Question on hobby retrofit of TNC150 control
>
> >
> > A friend of mine bought a Heidendhein TNC 150 controlled Wells Index
> > mill. He would like to convert this to PC based control, and asked me to
> > help.
> >
> > The servo motors have what I assume is tachometers, there are only two
> > wires for the motor and two wires from the device at the end of the
> > motor shaft. There are linear scales on all three axis.
> > Tracing back the encoder and tach wires, both end up at the servo drive
> > cards as I expected. We are hoping to use the Rutex step/dir to analog
> > converters, and retain the servo amps/motors.
> >
> > Amps are Westamp model A6514-10KS. What I take to be the inputs to the
> > cards are two connectors with two wires of each of the following colors
> > crimped to the same connectors:
> > red, gray, blue, purple and the other connector has yellow, black,
> > green. To clarify, there are two red wires to the same pin, two gray
> > wires to the same pin, etc.
> >
> > Is anyone familiar with this model Westamp amplifier and possibly able
> > to help walk me through interfacing the Rutex converters?
> >
> > We are trying to keep costs down, and reusing the amps/motors seems for
> > sure the cheapest route. The alternative is to ebay motors/amps/control
> > and go with steppers. But we would both like to try to keep the servos
> > if we can.
> >
> > Any help appreciated.
> >
> > Jon
> >
> >
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> http://groups.yahoo.com/group/jobshophomeshop I consider this to be a sister site to the CCED group, as many of the same members are there, for OT subjects, that are not allowed on the CCED list.
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> NOTICE: ALL POSTINGS TO THIS GROUP BECOME PUBLIC DOMAIN BY POSTING THEM. DON'T POST IF YOU CAN NOT ACCEPT THIS.....NO EXCEPTIONS........
> bill
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Dan,

I'll have to take a closer look to see exactly what the connections are.
The wires I mention looked to me like they came from the control. There
are two sets of three wires that come from the encoders and tachs. Not
sure exactly how that's wired...
Wires come from tachs/encoders to a small board where the signals appear
to be split and go to both the amps and the CPU.

I'll go back Monday and take a pic and post a link to it, a picture
being worth a lot more than my guesswork descriptions. If it looks like
your setup, a scan would be much appreciated!

He had the full manuals when he bought the machine. Took them with him
on vacation last year. In a light rain, they hit a slick spot and went
over a cliff. Their truck was stopped by the only tree for hundreds of
yards but the trailer, with manuals, went all the way and nothing was
recovered. Bummer to lose the manuals, but it could have been worse!

Thanks,

Jon