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
