> > Those are really expensive. I'm now sold on Bergerda drives from China. > I deal directly with the factory and not some middle man salesman on Ebay. > My 1.8kW drive I'm retrofitting to my Spindle was half that price. FedEx > shipping was the painful part. They won't ship surface unless the order is > large enough. > http://en.bergerda.com/ >
Hello John, Are you talking about the drive only? Because this listing I posted includes both motor and drive and also the cables. They are not the cheapest brand from China but I'm more than confident with them. This seller that has several accounts sells also some Xifeng drives with generic servo motors. They are almost half the price the Delta ones, but I wasn't confident enough to purchase and install them on the lathe. Mostly because of the poor documentation I found from them. Anyway, 350 USD for a 1.8 KW AC servo drive sounds more than good to me. Did you try these Bergeda drives already? Because I'm more than open to consider cheaper options for my next retrofit if they are reliable. El lun., 6 abr. 2020 a las 13:36, John Dammeyer (<jo...@autoartisans.com>) escribió: > Those are really expensive. I'm now sold on Bergerda drives from China. > I deal directly with the factory and not some middle man salesman on Ebay. > My 1.8kW drive I'm retrofitting to my Spindle was half that price. FedEx > shipping was the painful part. They won't ship surface unless the order is > large enough. > http://en.bergerda.com/ > > John > > > > -----Original Message----- > > From: Leonardo Marsaglia [mailto:ldmarsag...@gmail.com] > > Sent: April-06-20 2:55 AM > > To: Enhanced Machine Controller (EMC) > > Subject: Re: [Emc-users] closing the loop in linuxcnc with a 7i76 mesa > card and step direction control > > > > > > > > I also have a slant bed cnc lathe here that I am going to retrofit > next. I > > > will need at least 2 axis of stepgens and a 0-10 volt spindle output. > I > > > will want to bring the encoders back to the control on this also so > need at > > > least 2 encoder counters plus spindle encoder. The reason I go for the > > > step-dir servos is that it costs a extra 80usd per axis to get the > analog > > > control option from the servo supplier and that adds up when you start > > > getting lots of servos. also step and dir is really easy to get > started > > > with open loop. > > > > > > > Andrew, > > > > What brand of servos and drives are you using? > > > > Because I'm about to install the new control on a slant bed Mazak and I'm > > using these servos: > > > > > https://www.ebay.com/itm/Delta-1KW-3-18Nm-AC-Servo-Motor-Drive-Kit-ASD-B2-1021-B-ECMA-C21010RS-Shaft- > > > 22mm/162717987619?epid=7007485014&_trkparms=ispr%3D1&hash=item25e2bf7323:g:BdgAAOSwSpxZ6Bw1&enc=AQAEAAACY > > > BPxNw%2BVj6nta7CKEs3N0qUmWz426WDr%2B5Bq8tSbuMRoBFn3PL9wnIFWXvJSK8BW3IiUvFesCjNT6kqPq8OBSNR2Vu5HvqRS38 > > > 9wbKy%2BPWlnfFko23%2BzttmtaYgoO%2BvZklheCAvifK%2Bn51CWAKOpJ4pTXSyjT831NM3H83g5PEMTYIQqR5vTK4OlN1F0a%2F > > > OcAimLjhFIZzwBpBVHzw00NbEdt%2BfAIofkYP3RyzMLC%2F9QNTAyH%2FDoxCgwILfdcFU9hM6W%2FkZ5YpcNUkZAhkkNnnafWfg > > > 7Czb05zvFepSBaucBdQrrZKouEnGZ0VGhb8RS0HBTGeChkcQxr1hxkTp1lWcXf9iifZpUb04r2Y%2Br54lUssdq4Jyiy3rPT87hrMx0LXACRc > > > 4%2F99pBvdWrMZXPOF7AveWFlJ9CjxhVQBfxDNUiH4sHlErU%2FTtsDsqW5uR9G3i2TG1D76wO9eWPMxCP%2BcqTsdealSXIxvzyLJ1 > > > Lss42x46L%2FJTiM7VmHfuzcUS2XOdgHu2nm2yZ4ZcHLdidkQdsW85pyhdjb88lX2YWHBWPxzVoklCcCPV4KiiNK1vuzSYEzeziKVB%2Bf > > > mO2k8jfQa%2BXRieL9eot0Afxk5chrPC0ldmY9Gf2d8VdRBpTuM%2B23F7KjRco4w3GKP1G1v0JY0%2BoLkkCVb0sTYfT4uexz%2BK96 > > > XT7QB4jtxuXbCCij4XviykKJOXnb%2FhygEvCf3%2FQnhD%2BBn%2FRyxj%2BWY7f8MCApazEgxWygL6CIoB08skRjujvScF2ovh0RDLfH > > > Bc5cB7NY1QcDRfRSrqSBag07wUuqCQh&checksum=16271798761957f6ee515acc46db9f2447a1b8bbfaf1 > > > > > > Chinesse, but pretty good chinesse. These work in torque, speed and step > > mode. > > > > > > El dom., 5 abr. 2020 a las 21:21, andrew beck (<andrewbeck0...@gmail.com > >) > > escribi�: > > > > > thanks for the replies guys. I am currently seeing what cards JT has > that > > > I can get. > > > > > > I have another question though. > > > > > > I also have a slant bed cnc lathe here that I am going to retrofit > next. I > > > will need at least 2 axis of stepgens and a 0-10 volt spindle output. > I > > > will want to bring the encoders back to the control on this also so > need at > > > least 2 encoder counters plus spindle encoder. The reason I go for the > > > step-dir servos is that it costs a extra 80usd per axis to get the > analog > > > control option from the servo supplier and that adds up when you start > > > getting lots of servos. also step and dir is really easy to get > started > > > with open loop. > > > > > > If I started from scratch and didn't have any mesa cards available what > > > would you guys recommend? > > > > > > I am quite happy to chop and change cards with my cnc mill if that > helps. > > > Just want the cheapest and easiest option to set up. probably ease of > > > setup is more important than saving a little money. > > > > > > Regards > > > > > > Andrew > > > > > > On Mon, Apr 6, 2020 at 12:41 AM Peter C. Wallace <p...@mesanet.com> > wrote: > > > > > > > On Sun, 5 Apr 2020, andy pugh wrote: > > > > > > > > > Date: Sun, 5 Apr 2020 13:14:46 +0100 > > > > > From: andy pugh <bodge...@gmail.com> > > > > > Reply-To: "Enhanced Machine Controller (EMC)" > > > > > <emc-users@lists.sourceforge.net> > > > > > To: "Enhanced Machine Controller (EMC)" < > > > emc-users@lists.sourceforge.net > > > > > > > > > > Subject: Re: [Emc-users] closing the loop in linuxcnc with a 7i76 > mesa > > > > card > > > > > and step direction control > > > > > > > > > > On Sun, 5 Apr 2020 at 09:40, andrew beck <andrewbeck0...@gmail.com > > > > > > wrote: > > > > > > > > > So I have a 5i25 and 7i76 currently connected I'm running out of > io, so > > > > am > > > > > thinking of getting a 7i73 for the console buttons eg cycle start > so > > > > that I > > > > > can free up my 7i76 io for the toolchanger. > > > > > > > > If you have 5I25 and 7I76 and need more encoders, there are a few > > > > options available from Mesa: > > > > > > > > > > > > 7I85 = 4 encoder inputs + 5 RS-422 serial ports > > > > > > > > 7I85S = 4 encoder inputs + 4 step/dir outputs + 1 RS-422 serial port > > > > > > > > 7I89 = 8 encoder inputs or 7 encoder inputs and 1 RS-422/RS-485 > serial > > > port > > > > > > > > Peter Wallace > > > > Mesa Electronics > > > > > > > > > > > > > > > > _______________________________________________ > > > > Emc-users mailing list > > > > Emc-users@lists.sourceforge.net > > > > https://lists.sourceforge.net/lists/listinfo/emc-users > > > > > > > > > > _______________________________________________ > > > Emc-users mailing list > > > Emc-users@lists.sourceforge.net > > > https://lists.sourceforge.net/lists/listinfo/emc-users > > > > > > > _______________________________________________ > > Emc-users mailing list > > Emc-users@lists.sourceforge.net > > https://lists.sourceforge.net/lists/listinfo/emc-users > > > > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
