> > BTW, Here's a link to the video that shows how I screwed up thinking it > was in position mode and was losing position with higher velocities. > https://youtu.be/cx-kAqdwceU > > When really it was running in velocity mode.
So if I understand correctly, these drives have the option of driving them in velocity mode but with the speed reference being step + dir right? The Yaskawa drive I have in the Mazak for the spindle offers that possibility and I'm going to use it that way to simplify things with the boards I'm using. El mié., 8 abr. 2020 a las 22:59, John Dammeyer (<jo...@autoartisans.com>) escribió: > BTW, Here's a link to the video that shows how I screwed up thinking it > was in position mode and was losing position with higher velocities. > https://youtu.be/cx-kAqdwceU > > When really it was running in velocity mode. > John > > > > -----Original Message----- > > From: Leonardo Marsaglia [mailto:ldmarsag...@gmail.com] > > Sent: April-08-20 6:06 PM > > To: Enhanced Machine Controller (EMC) > > Subject: Re: [Emc-users] closing the loop in linuxcnc with a 7i76 mesa > card and step direction control > > > > > > > > Nope. Drive and motor and cables. The adaptor board converts the TTL > > > step/dir or pwm/dir into the appropriate signals. Step requires RS422 > for > > > high speed step rates. Slower rates can be open collector type > drivers. > > > The PWM module I picked up off aliexpress for about $10 which is how > the > > > motor operates at the moment from PP-1 off the 7i92H. > > > http://www.autoartisans.com/mill/PWMSpindle-2.jpg > > > > > > Like I said though. The shipping was a killer at about $150. > > > Now I also bought a 400W drive at that same time. Cast a mounting > plate > > > for it and did some testing. > > > https://youtu.be/43liAVILgHY > > > > > > That looks really good. I'm definitely going to consider them for my > next > > project. > > > > Thanks for the video and the data John! > > > > Leonardo > > > > El lun., 6 abr. 2020 a las 14:43, John Dammeyer (<jo...@autoartisans.com > >) > > escribi�: > > > > > Nope. Drive and motor and cables. The adaptor board converts the TTL > > > step/dir or pwm/dir into the appropriate signals. Step requires RS422 > for > > > high speed step rates. Slower rates can be open collector type > drivers. > > > The PWM module I picked up off aliexpress for about $10 which is how > the > > > motor operates at the moment from PP-1 off the 7i92H. > > > http://www.autoartisans.com/mill/PWMSpindle-2.jpg > > > > > > Like I said though. The shipping was a killer at about $150. > > > Now I also bought a 400W drive at that same time. Cast a mounting > plate > > > for it and did some testing. > > > https://youtu.be/43liAVILgHY > > > > > > John > > > > > > > > > > -----Original Message----- > > > > From: Leonardo Marsaglia [mailto:ldmarsag...@gmail.com] > > > > Sent: April-06-20 10:27 AM > > > > To: Enhanced Machine Controller (EMC) > > > > Subject: Re: [Emc-users] closing the loop in linuxcnc with a 7i76 > mesa > > > card and step direction control > > > > > > > > > > > > > > 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 > > > >) > > > > escribi?: > > > > > > > > > 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 > > > > > > > > > > > > _______________________________________________ > > > 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
