hey chris I have been using these servo drives for 2 years now. yes just email them and they will get in touch with you. I keep in touch with bill who is their sale rep. on whatsapp and we chat. Bill has basically taught me all about servos lol. and I knew nothing at the start so to say he has been patient is a understatement.
btw the expensive prices in the document I linked at the start are for 400v servos which I need in new zealand. I have a Japanese cnc lathe here that runs on 220v three phase through a step down transformer and the prices for 220v servo drives are significantly cheaper. I was quoted 290 usd for a 2.4 kw matching servo drive and motor. that includes all cables a braking resistor and everything else needed to run it. so I will be buying two of these asap. Modbus and canbus are a bit complicated you guys might be able to use that but I can't get it to work. and I have also given up on using their tuning software. I have spent so much time trying to get that to work. another thing is you can't have pulse control (step dir) and analog 0-10v at the same time. they use separate boards. it costs a extra 15 usd to spec analog control. which is what I will do next time as it is much simpler I think. just get a 7i77 and you are away. though the step direction method is good for easier set up even if the default tuning is pretty loose. then you can tune it later if needed. I documented it a bit on my build thread. also I bought better encoders last time. they are 13 bit I think 130107 PPR. I was sending about 25000 ppr to the mesa card I think. you need to times it by 4 for quadrature also. so it is a very high resolution. (encoders come from tiawan) so step direction needs their tuning software or else you can close the loop in linuxcnc and use halscope to just graph the position error and velocity error. Then make changes in the servo drive and see the changes in halscope. I used the spindle encoder counter on the 7i76 which is nice as you don't need any more mesa cards. this is only while tuning one axis at a time. afterward you can use the spindle encoder counter for the spindle. that worked a treat but was pretty hard to set up. So currently I have two cnc machines that need to be retrofit. One is a 4.2 ton slant bed cnc lathe. with a fanuc controller.( what a pain ) and the other is a 5.8 ton chevalier VMC with a Heidenhain controller on it also a pain to fix lol. I have given up trying to interface with the existing stuff on both machines and will just buy new servos and drives. It is not worth the hassle. anyway here is what I am paying for everything for the cnc lathe 2.4 kw servo drives 220v three phase 305 USD per axis so 610 usd total for the cnc mill 2.5 kw option 400v three phase 490 USD per axis 3 kw option 400v three phase 520 USD per axis 4th axis extra motor 400v three phase 1kw motor 320 USD I think for servo drive and motor and I will have second hand schiender vfd for the spindle. so all up total is should cost 610 usd for the cnc lathe and say 1500 usd for the cnc mill plus shipping which I will combine with a order of tooling on the same pallet load. anyway just wanted to let people know the options.. Regards Andrew On Sat, Jul 4, 2020 at 8:55 PM Chris Albertson <[email protected]> wrote: > I tracked down the specs. The model numbers in the price list are clearly > servo motors not steppers. THey have attached 2500 PPR encoders > > THe servo driver can be controlled by either a 10 volt analog signal, CAN > bus or Serial RS485. It also looks like the driver can send some > digital outputs giving status like, current, positions and such. > > THey do also make three phase stepper motors and drivers for them. > > Their web site does not say how you can buy their products. Nor is there > is link I can find to detailed documentation But they have an email > address, you could ask. > > The prices look to be very good for what you get. > > On Fri, Jul 3, 2020 at 9:55 PM theman whosoldtheworld < > [email protected]> > wrote: > > > justa a warm .... these is stepper motor ... for that price or little > more > > you can buy servo brushless motor .... consider china stepper with > encoder > > is not so good for retrofit or build a good mill or late normally have > not > > "intelligent" drive .... for some hobbyist router or 3dprinter can be ok. > > > > Il giorno gio 2 lug 2020 alle ore 23:53 andrew beck < > > [email protected]> ha scritto: > > > > > hey everyone > > > > > > sorry for the mess up. I changed the permissions now. never normally > > have > > > trouble so I don't know why they changed the default permissions > > > > > > and here is the link again just in case > > > > > > > > > > > > https://drive.google.com/file/d/1f90Jhh6oEA_5jervfwnMoePqwHrX6tKN/view?usp=sharing > > > > > > > > > > > > here is the sellers website > > > > > > if this fails you can search for yuhai servos and they come straight up > > > > > > http://www.zjyuhai.cn/en/ > > > > > > > > > > > > On Fri, Jul 3, 2020 at 9:45 AM Ralph Stirling < > > > [email protected]> > > > wrote: > > > > > > > Still no identity of the mystery seller, Andrew. > > > > Got a link to the supplier's website? > > > > > > > > Thanks, > > > > -- Ralph > > > > ________________________________________ > > > > From: andrew beck [[email protected]] > > > > Sent: Thursday, July 2, 2020 2:09 PM > > > > To: Enhanced Machine Controller (EMC) > > > > Subject: Re: [Emc-users] Cheap servo drives from China. > > > > > > > > CAUTION: This email originated from outside the Walla Walla > University > > > > email system. > > > > > > > > > > > > sorry guys! I forgot to make it a open link > > > > > > > > > > > > > > > > > > https://nam05.safelinks.protection.outlook.com/?url=https%3A%2F%2Fdrive.google.com%2Ffile%2Fd%2F1f90Jhh6oEA_5jervfwnMoePqwHrX6tKN%2Fview%3Fusp%3Dsharing&data=02%7C01%7Cralph.stirling%40wallawalla.edu%7Cb8a715036e6e44f2d9eb08d81ecc579e%7Cd958f048e43142779c8debfb75e7aa64%7C0%7C0%7C637293210275591153&sdata=AeW0L3oO6kifz%2FmiWbKvWqJpb8iPuJghg8f5vUQpMnA%3D&reserved=0 > > > > > > > > > > > > try this > > > > > > > > On Fri, Jul 3, 2020 at 8:32 AM andrew beck <[email protected] > > > > > > wrote: > > > > > > > > > Hey guys just so people know. > > > > > > > > > > You can buy a 240 v single phase 1kw motor and servo drive for 208 > > usd > > > > > now. Which is so cheap. Here is a price list. > > > > > > > > > > > > > > > Of course I just buy from these guys not connected otherwise > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > https://nam05.safelinks.protection.outlook.com/?url=https%3A%2F%2Fdrive.google.com%2Ffile%2Fd%2F1f90Jhh6oEA_5jervfwnMoePqwHrX6tKN%2Fview%3Fusp%3Ddrivesdk&data=02%7C01%7Cralph.stirling%40wallawalla.edu%7Cb8a715036e6e44f2d9eb08d81ecc579e%7Cd958f048e43142779c8debfb75e7aa64%7C0%7C0%7C637293210275601146&sdata=pZWbVsxUXaXHA445s55fB%2B3fNypyxhThsANAjjE3llg%3D&reserved=0 > > > > > > > > > > > > > > > > > > _______________________________________________ > > > > Emc-users mailing list > > > > [email protected] > > > > > > > > > > > > > > https://nam05.safelinks.protection.outlook.com/?url=https%3A%2F%2Flists.sourceforge.net%2Flists%2Flistinfo%2Femc-users&data=02%7C01%7Cralph.stirling%40wallawalla.edu%7Cb8a715036e6e44f2d9eb08d81ecc579e%7Cd958f048e43142779c8debfb75e7aa64%7C0%7C0%7C637293210275601146&sdata=%2BJLKIlsI2DFnvudSSbzwTYkh8EJLj7U2pbyxB2DvKqY%3D&reserved=0 > > > > > > > > > > > > _______________________________________________ > > > > 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 > > > > > -- > > Chris Albertson > Redondo Beach, California > > _______________________________________________ > 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
