The STBML drives for AC servos aren't too hard to tune. Especially if the encoder has a UVW output too. I was never able to satisfactorily tune the DC Servos with the STMBL drive. I went back to the HP_UHU drives with Henrik Olsson's dsPIC upgrade processor module. They work really nicely.
John > -----Original Message----- > From: andrew beck [mailto:andrewbeck0...@gmail.com] > Sent: April-08-20 4:31 PM > To: Enhanced Machine Controller (EMC) > Subject: Re: [Emc-users] closing the loop in linuxcnc with a 7i76 mesa card > and step direction control > > 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 <jo...@autoartisans.com> > wrote: > > > > -----Original Message----- > > > From: andrew beck [mailto:andrewbeck0...@gmail.com] > > > 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 <jo...@autoartisans.com> > > > 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:andrewbeck0...@gmail.com] > > > > > 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 <jo...@autoartisans.com > > > > > > > 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: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 > > > > > > > > _______________________________________________ > > 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
