yuhai is similar. they link the drive to the motor with a motor code. I actually tried to get my heidenhain motors going first on yuhai drives. they tried to help me set it up and recommended the closest settings I could use for motor code. and I fitted one of their encoders on the back just a standard 5000ppr incremental encoder. I don't know enough about motors to get it going properly. so gave up and just bought their motors too. But it would be so good if this was possible. I mean isn't a brushless servo motor pretty simple? The yuhai servos even had a parameter to align the encoders easily. it told me how how far off they were.
This would be the ideal way to go if we could just get it all working, as the drive is cheap to ship and probably only 100 usd each for a small drive. and we have a manufacture that is keen to help and actively gives really good support. I would be really keen to go down this path with my cnc lathe if possible. So if anyone knows much about servo motors then sing out! regards Andrew On Thu, Apr 9, 2020 at 11:08 AM John Dammeyer <[email protected]> wrote: > > -----Original Message----- > > From: andrew beck [mailto:[email protected]] > > Sent: April-08-20 3:49 PM > > To: Enhanced Machine Controller (EMC) > > Subject: Re: [Emc-users] closing the loop in linuxcnc with a 7i76 mesa > card and step direction control > > > > john one thing I still havn't sussed is the windows servo tuning software > > for the drives. I am still struggling to connect > > > > Did you get that sussed for the bergerda servo drives? > > The Bergerdas have a parameter that identifies the motor attached to the > drive. They have stock tune values I guess for those. > > I found that when I connected the one motor to the X axis that it didn't > need any tuning. In fact the biggest problem I had with that one was that > it seemed to lose position. It was only after I re-read the translated > manual that I finally understood I was running in velocity rather than > position mode. As long as I used the same velocity it always returned to > the same spot. But if I went slow in one direction and returned fast it > didn't return to the same spot. In hindsight that made perfect sense. > When I changed to position mode positioning was perfect. > > So I haven't had to try and tune the drive. > > John > > > > > > > > > On Thu, Apr 9, 2020 at 10:41 AM John Dammeyer <[email protected]> > > wrote: > > > > > Hi Andrew, > > > > > > The Bergerda sales support was excellent and any questions he couldn't > > > answer went to his engineers. They came back with answers right > away. I > > > think there are now two classes of service from China. > > > > > > There is still the make a buck at any price group at the lowest level > of > > > quality they can get away with. > > > > > > And then there's the others. Totally world class high quality with > > > excellent support on par with German/Japanese made stuff. > > > > > > Good to hear you got your estop working too. > > > John > > > > > > > > > > -----Original Message----- > > > > From: andrew beck [mailto:[email protected]] > > > > Sent: April-08-20 2:50 PM > > > > To: Enhanced Machine Controller (EMC) > > > > Subject: Re: [Emc-users] closing the loop in linuxcnc with a 7i76 > mesa > > > card and step direction control > > > > > > > > john you drives look very similar to mine lol > > > > > > > > the brand I use is yuhai. > > > > > > > > they are very good. > > > > > > > > 1 matched set 700w servo drive an motor is about 200 usd I think. > that > > > is > > > > just will the standard 2500 ppr encoders. but for $50 more you can > get > > > a > > > > 17 bit absolute encoder from japan or germany i think. on the end > of it. > > > > 17 bit is 131072 ppr. thats absolute data to the servo drive but it > can > > > > output standard incremental pulses to linuxcnc if you want to bring > the > > > > encoders back to the pc. > > > > > > > > I am just trying to get the pc tuning software going and I will be a > > > happy > > > > camper. > > > > > > > > I even blew up one of the drives (completely my fault) and they sent > me a > > > > free replacement. I only had to pay the shipping. and the drive > was a > > > 5kw > > > > drive worth like 400 usd > > > > > > > > I even told them it was my fault. they asked me to send the damaged > > > drive > > > > back and they would fix it. they they got it and look it over. > finally > > > > they said it was broken beyond repair and they had sent me a brand > new > > > one. > > > > > > > > I was pretty stocked with that service. > > > > > > > > I have a cnc lathe with all fanuc servos on it at the moment that I > would > > > > love to get working on the original fanuc servos and new drives but I > > > think > > > > that it almost isn't worth it. I might as well pay like 1000 usd and > > > just > > > > get 2 pics 5kw new drives and servos. > > > > > > > > If anyone has any ideas I would like to save money though of course > > > > > > > > On Tue, Apr 7, 2020 at 5:43 AM John Dammeyer <[email protected] > > > > > wrote: > > > > > > > > > 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:[email protected]] > > > > > > 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 (< > > > [email protected] > > > > > >) > > > > > > 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:[email protected]] > > > > > > > > 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 (< > > > > > [email protected] > > > > > > > >) > > > > > > > > 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 < > > > [email protected]> > > > > > > > wrote: > > > > > > > > > > > > > > > > > > > On Sun, 5 Apr 2020, andy pugh wrote: > > > > > > > > > > > > > > > > > > > > > Date: Sun, 5 Apr 2020 13:14:46 +0100 > > > > > > > > > > > From: andy pugh <[email protected]> > > > > > > > > > > > Reply-To: "Enhanced Machine Controller (EMC)" > > > > > > > > > > > <[email protected]> > > > > > > > > > > > To: "Enhanced Machine Controller (EMC)" < > > > > > > > > > [email protected] > > > > > > > > > > > > > > > > > > > > > > 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 < > > > > > [email protected] > > > > > > > > > > > > > > > > > > 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 > > > > > > > > > > [email protected] > > > > > > > > > > https://lists.sourceforge.net/lists/listinfo/emc-users > > > > > > > > > > > > > > > > > > > > > > > > > > > > _______________________________________________ > > > > > > > > > Emc-users mailing list > > > > > > > > > [email protected] > > > > > > > > > https://lists.sourceforge.net/lists/listinfo/emc-users > > > > > > > > > > > > > > > > > > > > > > > > > _______________________________________________ > > > > > > > > Emc-users mailing list > > > > > > > > [email protected] > > > > > > > > https://lists.sourceforge.net/lists/listinfo/emc-users > > > > > > > > > > > > > > > > > > > > > > > > > > > > _______________________________________________ > > > > > > > Emc-users mailing list > > > > > > > [email protected] > > > > > > > https://lists.sourceforge.net/lists/listinfo/emc-users > > > > > > > > > > > > > > > > > > > _______________________________________________ > > > > > > Emc-users mailing list > > > > > > [email protected] > > > > > > https://lists.sourceforge.net/lists/listinfo/emc-users > > > > > > > > > > > > > > > > > > > > _______________________________________________ > > > > > Emc-users mailing list > > > > > [email protected] > > > > > https://lists.sourceforge.net/lists/listinfo/emc-users > > > > > > > > > > > > > _______________________________________________ > > > > Emc-users mailing list > > > > [email protected] > > > > https://lists.sourceforge.net/lists/listinfo/emc-users > > > > > > > > > > > > _______________________________________________ > > > Emc-users mailing list > > > [email protected] > > > https://lists.sourceforge.net/lists/listinfo/emc-users > > > > > > > _______________________________________________ > > Emc-users mailing list > > [email protected] > > https://lists.sourceforge.net/lists/listinfo/emc-users > > > > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users > _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
