On Sun, 10 Apr 2016, Ormund Williams wrote: > Date: Sun, 10 Apr 2016 10:30:15 -0400 > From: Ormund Williams <[email protected]> > Reply-To: "Enhanced Machine Controller (EMC)" > <[email protected]> > To: "Enhanced Machine Controller (EMC)" <[email protected]> > Subject: Re: [Emc-users] Replacing Fanuc controller on Johnford VMC-500 mill > > On Sat, 2016-04-09 at 00:56 +0100, Andy Pugh wrote: > First question: is it possible to connect LinuxCNC to these servo > > amplifiers? > Yes. Now that's encouraging.
> But, be prepared for a Project. This will involve you learning a lot > about your machine and a lot about machine control fundamentals. > Just take this as fair warning. There are folk in (for example) the > Mach3 forums who will insist that you will be making parts inside a > week. They are hopelessly optimistic and I have watched novice > retrofitters lose heart because of that. Reckon on 1 month to get > the machine moving and another month to get it dialed in enough to > make money. Less if you are a Linux geek with a Control Systems PhD. > More if you have never used Linux before. > I am a Linux geek, motor controls is what I do and this will be my third LinuxCNC project, so not a novice. > You will need help, accept that. Just ask. That's why I'm here. Now any hardware recommendations? I like the Masa cards, I was thinking a 4i65/8/9, a 7i33 and two 7i37TAs or instead of the 4i65 a 7i80. There are still some mysteries to solve; what's the exact pin-out of the servo amps? and how is the spindle controller connected? In digging through the wiring I notice it dosn't match the documentation I have. -- Ormund Heres what I know The pinouts are available in Fanuc manuals, The older drives use Honda connectors, the newer use .050 pitch high density connectors but have similar interfaces until they get to FSSB interfaced drives The older drives are analog +-10V velocity mode (up to xxxx-6057 I beleive ) Your (xxxx-6058) drive is digital (three phase PWM in and 2 channels of +- ~5V analog motor current sense for 2 phases out) PWM frequency is low as the output devices are bipolar transistors (Either 4 or 8 KHz) I had considered making a specific daughtercard with the correct connectors and local velocity feedback but never really had the time. I can dig up the pinout if you wish Peter Wallace Mesa Electronics ------------------------------------------------------------------------------ Find and fix application performance issues faster with Applications Manager Applications Manager provides deep performance insights into multiple tiers of your business applications. It resolves application problems quickly and reduces your MTTR. Get your free trial! http://pubads.g.doubleclick.net/ gampad/clk?id=1444514301&iu=/ca-pub-7940484522588532 _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
