Re: http://rutex.com/home/servo.htm

["Darrell" <dgehlsen-at-earthlink.net>]

Dang!!! You got me excited when you said they had 200volt drives. Then I went to
the site and they said 200V and 24Amp I thought I had found gold. The problem is
that you can get 200 volt OR 24 Amp. The 200 volt model will only do 6 Amp and
the 24 Amp model will only take 50 volts. I need 200 volt 24 Amp drives for a
machine that I have.
Darrell

http://www.machinemaster.com


----- Original Message -----
From: "Lamar Davidge" <lamar.davidge-at-airmail.net>
To: "Multiple recipients of list" <emc-at-nist.gov>
Sent: Tuesday, February 26, 2002 1:06 AM
Subject: Re: intro and a few questions


Dennis,


    Well Iv'e been really happy with these dirves http://rutex
com/home/servo.htm, but they are located in Australia so it takes about a
week for them to get to you. (Rutex also makes a lot of products relating to
cutting torch control, like a torch height controll, I think they would sell
you a complete electronics package, but I don't know cutting torches arent
my thing). It is a stepper driven servo drive, just like the geck 340
http://www.geckodrive.com/products/g340/, only it is more adjustable, and it
runs at up to 200v, while the gecko max volts is 80. I chose motors from
this company http://www.SEM.co.uk/ cause they have very good DC brush motors
that can handle 140v MT30e4-52 it is available with an encoder attached for
a very reasonable price. The power supply i use is a bridge rectifier
http://www.allelectronics.com/cgi-bin/category
cgi?category=search&item=FWB-352&type=store , power supplies dont get much
cheaper than that! The servo drives require a seperate 24v power supply I
got mine off Ebay real cheap 24$. If you need ballscrews try MSC I have been
pleased with their service, and their price on the 5/8 line of screws is
very reasonable  http://www.mscdirect.com/IWCatSectionView
process?IWAction=Load&Merchant_Id=1&Section_Id=2002093&pcount=15&pbegin=0&Res
artFlow=t as for linear rails Techno Isel makes some good stuff (Techno also
has ballscrews), and very inexpensive for what you get http://www
techno-isel.com/default.htm .  Here is a motor control tutorial from
Motorola, I think it is one of the broken links you were referring to
http://e-www.motorola.com/collateral/MOTORPRINTUT.html .



-btw- there is about 3 years worth of research in these links so consider
yourself about that much ahead of the curve now. If you want all my links
relating to cnc control let me know and I'll email them to you

Lamar Davidge

-------Original Message-------

From: emc-at-nist.gov
Date: Monday, February 25, 2002 09:16:25 PM
To: Multiple recipients of list
Subject: intro and a few questions

greetings all:

i have recently joined this list and have been scanning the archives to
glean info. i am planning my jump into cnc with a bdi. i am an
semi-experienced linux user and have had the fortune to use high end
machines (puma lathe, hurco mill, ...) i have the basic gcode knowledge. as
far as linux goes, i am able to patch, compile and install source packages.
i do ok at basic scripting. surprisingly, my concerns are not about getting
the emc/linux combination to work, its the other stuff.

i have been scouring the archives of the yahoo cad/cam/dro list as well, but
so far i have not had any luck figuring out the last bits. if anyone can
help me get over this last hurdle, i would appreciate the guidance.

my first project is to build a gantry type table to use with either a
cutting torch or a plasma cutter. i have most of the mechanical tidbits
figured out, and i am hoping for an overall size of about 4'x4'. 2d for
sure, maybe 3d to adjust torch height, and i am thinking that i want a
coolant off/on type function to control cutting function on/off. its not
unlike the cnc router type affairs that i have seen, only for metal.

1. is the torch on-off really another axis? can anyone suggest an means of
control. it would be a simple off/on solenoid type control.

2. the only other thing at this point that is holding me back is the motors.
stepper or servo or chopper type. i tried a couple of the links to the
stepper motor tutorials, but they seem to be dead.
can someone point me to a resource or faq for them?

3. lastly, the whole notion of torque ratings of the motors. again, pointers
would be great. i don't think i need gorilla torque or speed.. i am looking
for 10-80 inches per minute travel. i have been scouring the scrapyard for
motors, and surprisingly enough, i see A LOT of them, but havn't been able
to identify my needs.

again, i know this is mostly a dedicated emc list, but i am hoping someone
can point me in the right direction to get over these last remaining hurdles
to get going.

thanks in advance

dennis




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