New Machine Build- Which drives?

[RP Designs]

Ok, so with AjaxCNC not really earning any sort of trust, I am now in the position of building my own control. I would like to upgrade the circa 1986 drives in my dead Fanuc 10MA control while retaining the servos and encoders. I have looked into the Gecko's, Rutex, and Granite drives and haven't really decided which is going to be the best route.

For my X and Y axis, I have Fanuc 5m servos with 2000 PPR encoders. These motors are rated at 151 volts, 9 amps and 2000RPM (continuous at stall). The Z axis has a Fanuc 0M motor rated at 96 volts, 7.2 amps and 2000 rpm (also continuous at stall). What drives would be suitable for these motors? I am not sure I can wait the 2-3 months for the new 160V granite drives.

[samco]

I think you options are few if you want step/dir. What are you wanting to use for control software? (mach, emc2...?)

sam

[RP Designs]

I am not sure which one I want to go with yet. I am leaning towards emc, but may go down the mach path.

[samco]

If you are using emc2 - you could use industry standard drives that take pwm/dir, +/-10v... Like AMC or such. You would need i/o boards that would output that. They start at about $90 for the mesa 48 i/o board.

Look here http://wiki.linuxcnc.org/cgi-bin/emc...orted_Hardware

Pico systems sells amps also that are rated to 150v 20a.
http://jelinux.pico-systems.com/pwmservo.html

take a look at mesa also.
http://mesanet.com/

All of these setups allow closed loop back to emc2.
Research research research

sam

[osdhillon]

Hi guys,

I have centroid 2KW and 3KW AC servo motors. Which Servo drive can I use to run it? Can any body help.
Thanks

[MattTheNoob]

I'm in the middle of a '80's retrofit myself, with similar sized axis motors, and my initial tests with gecko 320's was very positive. Ok, you will limit your top speed with the 80v maximum, but it'll probably still be faster than the original machine. My bosto was originally 100imp max, presumably because of the processing speed of the '80's controls, but the gecko 320's at 72v + mach 3 easily exceeds that. I don't recall the exact speed I got during the test, but you can calc it with your motor rpm/v, and ball screw pitch.

[Matt Adams]

Originally Posted by osdhillon Hi guys, I have centroid 2KW and 3KW AC servo motors. Which Servo drive can I use to run it? Can any body help. Thanks

I've visited the folks up at Centroid. I believe that they use brushless AC motors with incremental quadrature feedback. I know that most of their drives operated best with 240 VAC.

Kollmorgen drives can operate those motors (which i believe are actually manufactured in England)

Let me know if you want more information.

Matt

[osdhillon]

matt

thanks for the info. Where can I get more info regarding these drives. What kind of signal does these drives accept.
Thanks

[Matt Adams]

Kollmorgen S300 drives.

They accept quadrature input, analog +/- 10 VDC, step and direction. Also can operate over SERCOS, Profibus, CANOpen, Ethercat field bus protocols.

3,6, 10 Amps continuous @ 240 VAC 3 Phase.

http://www.danahermotion.com/website...00_Catalog.pdf

If you're interested, I can provide you pricing and help you set them up.

Matt

[osdhillon]

Thanks
I am very interested. Can you please send me e-mail @ osdhillon@gmail.com with pricing and a number I can reach you.
Onkar

[Larken]

Check out the mill retrofits that use Viper 200 drives. They match your Fanuc motors well.

http://www.viperservo.com/V200.htm
http://www.viperservo.com/V200apps/V200_apps.htm