Re: [Emc-users] BLDC Hal component
... snip I think that the servos + resolvers will work a fair bit better than steppers. I was rather upset when I found that my ebay bargain servos had resolvers, but now I am something of a fan of the devices. I have to agree, if they are used correctly with good electronics to drive them, they are very good and they last. ... snip For most cases, my vote is with encoders, but if the resolvers are installed and working that's a plus for resolvers. I didn't have an option at the time I converted my lathe: http://www.wallacecompany.com/cnc_lathe/HNC/6-1a.jpg http://www.wallacecompany.com/cnc_lathe/HNC/ http://www.heidenhain.us/enews/stories_0411/AUmain.php -- SUMMARY Resolvers provide absolute position information and are capable of operating in relatively high temperature and shock environments because they are similar in construction to the motor itself. However, they are inflexible in their application, and must be specifically tuned to meet the drive system requirements. Encoders on the other hand, can be absolute or incremental, simplify the design task, are more accurate, allow for a wider dynamic range and are more flexible should changes be necessary in the future. -- Kirk Wallace http://www.wallacecompany.com/machine_shop/ http://www.wallacecompany.com/E45/ -- Dive into the World of Parallel Programming. The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] BLDC Hal component
On 1 February 2015 at 16:25, Kirk Wallace kwall...@wallacecompany.com wrote: However, they are inflexible in their application, and must be specifically tuned to meet the drive system requirements I wonder what that means, and if it is even true? -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto -- Dive into the World of Parallel Programming. The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] BLDC Hal component
On 02/01/2015 10:36 AM, andy pugh wrote: On 1 February 2015 at 16:25, Kirk Wallace kwall...@wallacecompany.com wrote: However, they are inflexible in their application, and must be specifically tuned to meet the drive system requirements I wonder what that means, and if it is even true? I've found that most size 11 resolvers, from the Singer/Kearfott and Harowe Controls Harosyn lines are pretty much interchangeable. You do have to set the resolver reader unit for the proper transformer ratio of the resolver, but that is about all there is to it. Tamagawa resolvers with wound rotors also work fine. Now, some of the newer Tamagawa variable reluctance resolvers need a lot more drive current than my resolver converter can provide. Also, they usually have a very high number of poles, which makes it impossible to have a one-per-rev index pulse. Kirk may have meant that the thing reading the resolver needs to be set for the characteristics of the resolver, but it should be a standard practice to set that. Jon -- Dive into the World of Parallel Programming. The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] BLDC Hal component
On 1 February 2015 at 17:05, Kirk Wallace kwall...@wallacecompany.com wrote: I know very little about resolvers, but I think it means that resolvers are analog so one needs to determine what the 100% and 0% signal values are, and values in between (to deal with linearity) to convert to data. The reader takes the ratio of the sin and cos voltages, so the absolute voltage is vaguely irrelevant. I think what I am saying is that the tendency of folk to immediately remove a $1000 resolver and fit a $100 encoder when doing a retrofit might be a mistake. -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto -- Dive into the World of Parallel Programming. The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] BLDC Hal component
It might simply be because resolvers are analog which considered to be old technology. It is useful to have some extra resolution above the accuracy for the control loop and I think resolvers usually have higher resolution. I read many times digital control loops are faster but quite a lot of digital control loops are a lot slower than the cheapest available operational operational. On Sun, 1 Feb 2015 17:49:41 + andy pugh bodge...@gmail.com wrote: On 1 February 2015 at 17:05, Kirk Wallace kwall...@wallacecompany.com wrote: I know very little about resolvers, but I think it means that resolvers are analog so one needs to determine what the 100% and 0% signal values are, and values in between (to deal with linearity) to convert to data. The reader takes the ratio of the sin and cos voltages, so the absolute voltage is vaguely irrelevant. I think what I am saying is that the tendency of folk to immediately remove a $1000 resolver and fit a $100 encoder when doing a retrofit might be a mistake. -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto -- Dive into the World of Parallel Programming. The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Dive into the World of Parallel Programming. The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] BLDC Hal component
On 02/01/2015 11:05 AM, Kirk Wallace wrote: On 02/01/2015 08:36 AM, andy pugh wrote: On 1 February 2015 at 16:25, Kirk Wallace kwall...@wallacecompany.com wrote: However, they are inflexible in their application, and must be specifically tuned to meet the drive system requirements I wonder what that means, and if it is even true? I know very little about resolvers, but I think it means that resolvers are analog so one needs to determine what the 100% and 0% signal values are, and values in between (to deal with linearity) to convert to data. Encoder signals are ether on or off and directly usable for data. Yes, you need to set the device reading the resolver for the transformer ratio of the specific resolver. Linearity is not a problem. These things are built to insane precision for the aerospace and machine tool industries. If you read the data sheets on them, they are tested with a goniometer and precision resolver display to arc seconds of accuracy. Jon -- Dive into the World of Parallel Programming. The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] BLDC Hal component
Using the STM32 is not a problem but connecting to an inverter is. Nicklas Karlsson Micropower On Fri, 30 Jan 2015 13:40:21 + Marius Liebenberg mar...@mastercut.co.za wrote: -- Original Message -- From: andy pugh bodge...@gmail.com To: Marius Liebenberg mar...@mastercut.co.za Cc: Enhanced Machine Controller (EMC) emc-users@lists.sourceforge.net Sent: 2015-01-30 15:34:16 Subject: Re: Re[4]: [Emc-users] BLDC Hal component On 30 January 2015 at 13:16, Marius Liebenberg mar...@mastercut.co.za wrote: He said I should covert to steppers for the sake of cost and I said No lets try and make the servos work. I think that the servos + resolvers will work a fair bit better than steppers. I was rather upset when I found that my ebay bargain servos had resolvers, but now I am something of a fan of the devices. I have to agree, if they are used correctly with good electronics to drive them, they are very good and they last. I have started looking at a drive using the STM32 series of MCU as there are a number of projects going on with them. There might be a modestly priced solution from that in the end. -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto -- Dive into the World of Parallel Programming. The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Dive into the World of Parallel Programming. The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] BLDC Hal component
On 02/01/2015 08:36 AM, andy pugh wrote: On 1 February 2015 at 16:25, Kirk Wallace kwall...@wallacecompany.com wrote: However, they are inflexible in their application, and must be specifically tuned to meet the drive system requirements I wonder what that means, and if it is even true? I know very little about resolvers, but I think it means that resolvers are analog so one needs to determine what the 100% and 0% signal values are, and values in between (to deal with linearity) to convert to data. Encoder signals are ether on or off and directly usable for data. -- Kirk Wallace http://www.wallacecompany.com/machine_shop/ http://www.wallacecompany.com/E45/ -- Dive into the World of Parallel Programming. The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] BLDC Hal component
http://www.leinelinde.com/Products/ I took a fast look: Encoder http://www.leinelinde.com/Documents/Brochure/700_Series_eng.pdf with up to 10 000 ppr equal to a little bit less than 14 bits resolution which I assume be more or less equal to accuracy. Resolver http://www.leinelinde.com/Documents/Brochure/600_Series_eng.pdf with up to 19 bits resolution. Encoders usually have quadrature output signals and are incremental. Resolvers usually need to be driven by at sinus input voltage, sense difference between sinus voltages and are absolute. I guess voltage levels on both are rather standardized. Both may be fitted with standard industrial communication like profibus DP or CAN instead of direct signals. I guess the big question is if angle sensor or other mechanical limitations are limiting the accuracy or control loop. The control loop need some extra resolution to be effective so I would guess a resolver with same accuracy as an encoder but higher resolution would be a better choice. Nicklas Karlsson On Sun, 01 Feb 2015 08:25:48 -0800 Kirk Wallace kwall...@wallacecompany.com wrote: ... snip I think that the servos + resolvers will work a fair bit better than steppers. I was rather upset when I found that my ebay bargain servos had resolvers, but now I am something of a fan of the devices. I have to agree, if they are used correctly with good electronics to drive them, they are very good and they last. ... snip For most cases, my vote is with encoders, but if the resolvers are installed and working that's a plus for resolvers. I didn't have an option at the time I converted my lathe: http://www.wallacecompany.com/cnc_lathe/HNC/6-1a.jpg http://www.wallacecompany.com/cnc_lathe/HNC/ http://www.heidenhain.us/enews/stories_0411/AUmain.php -- SUMMARY Resolvers provide absolute position information and are capable of operating in relatively high temperature and shock environments because they are similar in construction to the motor itself. However, they are inflexible in their application, and must be specifically tuned to meet the drive system requirements. Encoders on the other hand, can be absolute or incremental, simplify the design task, are more accurate, allow for a wider dynamic range and are more flexible should changes be necessary in the future. -- Kirk Wallace http://www.wallacecompany.com/machine_shop/ http://www.wallacecompany.com/E45/ -- Dive into the World of Parallel Programming. The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Karlsson Wang nicklas.karls...@karlssonwang.se -- Dive into the World of Parallel Programming. The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] BLDC Hal component
On 1 February 2015 at 23:39, dave dengv...@charter.net wrote: The technology for converting resolvers to digital has gotten much cheaper True, I ended up writing the Mesa resolver and 3-phase PWM drivers and the bldc component to get my mill working. I guess it was a bit harder until I did all that :-) -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto -- Dive into the World of Parallel Programming. The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] BLDC Hal component
On Sunday 01 February 2015 13:41:03 Karlsson Wang did opine And Gene did reply: It might simply be because resolvers are analog which considered to be old technology. It is useful to have some extra resolution above the accuracy for the control loop and I think resolvers usually have higher resolution. I read many times digital control loops are faster but quite a lot of digital control loops are a lot slower than the cheapest available operational operational. This is why one studies his rockhopper output, to see if the digital data can make it all the way thru the chain of processing modules in one servo thread invocation by changing the order of the addf's in the .hal file. The delay in that case is fixed, and a direct function of the servo thread frequency. Often, raising the servo thread frequency can go a long long way toward rock solid stability in a spindle speed control circuit. My lathe, now that I have a 5i25 doing the high speed stepper honors, is now running with a nominally 4 kilohertz servo thread, enhancing the effectiveness of the speed servo considerably without instability or overly soft control down to about 250 rpms. Conversely I have purposely inverted that order if I needed a slower responding loop. But be aware of Nyquist phase reversals in that event as they can really enhance a near resonant condition. Basically its best not to allow a phase shift to ever exceed 90 degrees of the system resonant frequency where the gain at that frequency is above one. On Sun, 1 Feb 2015 17:49:41 + andy pugh bodge...@gmail.com wrote: On 1 February 2015 at 17:05, Kirk Wallace kwall...@wallacecompany.com wrote: I know very little about resolvers, but I think it means that resolvers are analog so one needs to determine what the 100% and 0% signal values are, and values in between (to deal with linearity) to convert to data. The reader takes the ratio of the sin and cos voltages, so the absolute voltage is vaguely irrelevant. I think what I am saying is that the tendency of folk to immediately remove a $1000 resolver and fit a $100 encoder when doing a retrofit might be a mistake. --- --- Dive into the World of Parallel Programming. The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users Cheers, Gene Heskett -- There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order. -Ed Howdershelt (Author) Genes Web page http://geneslinuxbox.net:6309/gene US V Castleman, SCOTUS, Mar 2014 is grounds for Impeaching SCOTUS -- Dive into the World of Parallel Programming. The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] BLDC Hal component
On 02/01/2015 09:49 AM, andy pugh wrote: On 1 February 2015 at 17:05, Kirk Wallace kwall...@wallacecompany.com wrote: I know very little about resolvers, but I think it means that resolvers are analog so one needs to determine what the 100% and 0% signal values are, and values in between (to deal with linearity) to convert to data. The reader takes the ratio of the sin and cos voltages, so the absolute voltage is vaguely irrelevant. I think what I am saying is that the tendency of folk to immediately remove a $1000 resolver and fit a $100 encoder when doing a retrofit might be a mistake. I did exactly that on my Mazak. Today I might play it differently. The technology for converting resolvers to digital has gotten much cheaper. Still it is very nice to have the position indicator directly coupled to the ball screw. It might be most interesting to use the gearing that was on the tail end of the servo motor and hang it on the end of the ball screw (7:1 ratio) and then go A - D. Dave -- Dive into the World of Parallel Programming. The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] BLDC Hal component
On 30 January 2015 at 16:10, Rene Hopf reneh...@mac.com wrote: 200V @ 10A with resolvers looks like a good candidate for my brushless Driver. I just remembered that Granite Drives have a (very cheap) adaptor to allow use of Resolvers with the Argon drives too. You would almost certainly end up using step/dir control with that system. http://shop.granitedevices.com/product/38/argon-resolver-adapter I think it is just some passive components and the cleverness is in the drive firmware. -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto -- Dive into the World of Parallel Programming. The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] BLDC Hal component
On 01/30/2015 07:47 AM, Marius Liebenberg wrote: I have a feeling that these have resolver and hall sensors as there is huge number of wires on the plug. More that what a resolver will need. Ahh, then our resolver converter would also work will with them. The resolver converter's A-B-Z signals go to the CNC control interface, the Hall signals go to the motor drive (or some digital inputs to tell BLDC the motor position). Jon -- Dive into the World of Parallel Programming. The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] BLDC Hal component
On 01/30/2015 06:54 AM, andy pugh wrote: On 30 January 2015 at 12:33, Marius Liebenberg mar...@mastercut.co.za wrote: 196V @ 8.5A and looks like a resolver feedback. These are the Lafert. The others I have not seen yet. That sounds a lot like what I have on my mill. Pico-systems have a 160V / 20A servo drive that can probably be made to work along with their resolver-to-quadrature converter. I think you would need advice from Jon as to how to commutate using the converter. It may be that the bldc component can help there. Our current version of the resolver converter produces quadrature (ie. incremental) position. It does have an absolute binary output as 12 CMOS-level bits available on a header. I have thought about adding a feature to create the industry standard Hall signals, but as this needs to accommodate the number of motor poles and maybe alignment offsets between motor and resolver shafts, it gets complicated. BLDC does apparently have a sensorless mode where it can get the motor moving by trying different windings, and then get in sync once the index pulse is seen. There are drives from the likes of AMC that take +/-10V command and hall signal patterns. The bldc component can convert resolver feedback from the 7i49 to hall patterns. This might also work with the Pico drives, but I think that they are PWM controlled rather than analogue. Yes, our drives take a digital PWM signal. Jon -- Dive into the World of Parallel Programming. The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] BLDC Hal component
Hi, 200V @ 10A with resolvers looks like a good candidate for my brushless Driver. We are making very good progress at the moment. https://github.com/rene-dev/stmbl If anyone is interested in PCBs, let me know, I will order some in a few weeks. Rene On 30 Jan 2015, at 15:48, andy pugh bodge...@gmail.com wrote: On 30 January 2015 at 14:41, Marius Liebenberg mar...@mastercut.co.za wrote: It's actually Pluk n lat vir jou eie gat It's like Dutch isn't it? English but spelt really badly :-) Pluck a lath for your own back -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto -- Dive into the World of Parallel Programming. The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Dive into the World of Parallel Programming. The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] BLDC Hal component
I was about to have some made for myself but I will wait for your to be done. -- Original Message -- From: Rene Hopf reneh...@mac.com To: Enhanced Machine Controller (EMC) emc-users@lists.sourceforge.net Sent: 2015-01-30 18:10:40 Subject: Re: [Emc-users] BLDC Hal component Hi, 200V @ 10A with resolvers looks like a good candidate for my brushless Driver. We are making very good progress at the moment. https://github.com/rene-dev/stmbl If anyone is interested in PCBs, let me know, I will order some in a few weeks. Rene On 30 Jan 2015, at 15:48, andy pugh bodge...@gmail.com wrote: On 30 January 2015 at 14:41, Marius Liebenberg mar...@mastercut.co.za wrote: It's actually Pluk n lat vir jou eie gat It's like Dutch isn't it? English but spelt really badly :-) Pluck a lath for your own back -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto -- Dive into the World of Parallel Programming. The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Dive into the World of Parallel Programming. The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Dive into the World of Parallel Programming. The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] BLDC Hal component
-- Original Message -- From: andy pugh bodge...@gmail.com To: Marius Liebenberg mar...@mastercut.co.za; Enhanced Machine Controller (EMC) emc-users@lists.sourceforge.net Sent: 2015-01-30 16:48:42 Subject: Re: [Emc-users] BLDC Hal component On 30 January 2015 at 14:41, Marius Liebenberg mar...@mastercut.co.za wrote: It's actually Pluk n lat vir jou eie gat It's like Dutch isn't it? English but spelt really badly :-) Pluck a lath for your own back Almost got it right :) -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto -- Dive into the World of Parallel Programming. The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] BLDC Hal component
On 1/30/2015 7:48 AM, andy pugh wrote: On 30 January 2015 at 14:41, Marius Liebenberg mar...@mastercut.co.za wrote: It's actually Pluk n lat vir jou eie gat It's like Dutch isn't it? English but spelt really badly :-) Pluck a lath for your own back I like the Polish Not My Circus, Not My Monkey. --- This email has been checked for viruses by Avast antivirus software. http://www.avast.com -- Dive into the World of Parallel Programming. The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] BLDC Hal component
On 30 January 2015 at 13:47, Marius Liebenberg mar...@mastercut.co.za wrote: I have a feeling that these have resolver and hall sensors as there is huge number of wires on the plug. More that what a resolver will need. That's interesting and opens up the possibility of using a number of alternative drives. However, having said that the Mesa solution is expensive, if you are buying new drives then the 8i20 is relatively cheap, it is just expensive relative to used stuff from eBay. Do you have the original 200V supply for the motors on the machine? There is a fair saving to be had by re-using that. -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto -- Dive into the World of Parallel Programming. The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] BLDC Hal component
-- Original Message -- From: andy pugh bodge...@gmail.com To: Marius Liebenberg mar...@mastercut.co.za Cc: Enhanced Machine Controller (EMC) emc-users@lists.sourceforge.net Sent: 2015-01-30 15:57:43 Subject: Re: Re[6]: [Emc-users] BLDC Hal component On 30 January 2015 at 13:47, Marius Liebenberg mar...@mastercut.co.za wrote: I have a feeling that these have resolver and hall sensors as there is huge number of wires on the plug. More that what a resolver will need. That's interesting and opens up the possibility of using a number of alternative drives. However, having said that the Mesa solution is expensive, if you are buying new drives then the 8i20 is relatively cheap, it is just expensive relative to used stuff from eBay. Do you have the original 200V supply for the motors on the machine? There is a fair saving to be had by re-using that. Not sure about that. I will have to ask the man. He did seem to have a lot of the original stuff that was stripped out of the box. -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto -- Dive into the World of Parallel Programming. The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] BLDC Hal component
Maak 'n lat vir jou eie gat? -Original Message- From: Marius Liebenberg [mailto:mar...@mastercut.co.za] Sent: 30 January 2015 15:17 To: andy pugh Cc: Enhanced Machine Controller (EMC) Subject: Re: [Emc-users] BLDC Hal component We have a saying in my language that roughly translated says : I have just picked a lashing stick for my own ass :) He said I should covert to steppers for the sake of cost and I said No lets try and make the servos work. I will have to look at Jon's stuff as well before I decide. Thanks for all the great info. I have a feeling though that I will ask some more questions on the BLDC component in the near future. -- Original Message -- From: andy pugh bodge...@gmail.com To: Marius Liebenberg mar...@mastercut.co.za Cc: Enhanced Machine Controller (EMC) emc-users@lists.sourceforge.net Sent: 2015-01-30 14:54:06 Subject: Re: Re[2]: [Emc-users] BLDC Hal component On 30 January 2015 at 12:33, Marius Liebenberg mar...@mastercut.co.za wrote: 196V @ 8.5A and looks like a resolver feedback. These are the Lafert. The others I have not seen yet. That sounds a lot like what I have on my mill. Pico-systems have a 160V / 20A servo drive that can probably be made to work along with their resolver-to-quadrature converter. I think you would need advice from Jon as to how to commutate using the converter. It may be that the bldc component can help there. On my machine I am using a set of the Mesa 8i20 drives and the 7i49 resolver interface board. Because the 8i20 takes digital phase angle information I am not using the 7i49 analogue outputs, and had to add a 7i44 for the serial comms. The FPGA board on my system is the 5i23 but I think that 5i24 or 6i24 are cheaper and equivalent now. There are drives from the likes of AMC that take +/-10V command and hall signal patterns. The bldc component can convert resolver feedback from the 7i49 to hall patterns. This might also work with the Pico drives, but I think that they are PWM controlled rather than analogue. You almost certainly can't connect resolvers to the parallel port even through quadrature converters because the counts-per-rev is too high. The Pico boards count in hardware (and connect to the parport) so do work with their resolver to quadrature board. Whilst other options exist, the 5i23 / 7i49 / 7i44 / 8i20 combination is known to work, though is not inexpensive. -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto -- Dive into the World of Parallel Programming. The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Dive into the World of Parallel Programming. The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] BLDC Hal component
-- Original Message -- From: Belli Button be...@iafrica.com To: 'Marius Liebenberg' mar...@mastercut.co.za; 'Enhanced Machine Controller (EMC)' emc-users@lists.sourceforge.net Sent: 2015-01-30 16:02:49 Subject: RE: [Emc-users] BLDC Hal component Maak 'n lat vir jou eie gat? It's actually Pluk n lat vir jou eie gat -Original Message- From: Marius Liebenberg [mailto:mar...@mastercut.co.za] Sent: 30 January 2015 15:17 To: andy pugh Cc: Enhanced Machine Controller (EMC) Subject: Re: [Emc-users] BLDC Hal component We have a saying in my language that roughly translated says : I have just picked a lashing stick for my own ass :) He said I should covert to steppers for the sake of cost and I said No lets try and make the servos work. I will have to look at Jon's stuff as well before I decide. Thanks for all the great info. I have a feeling though that I will ask some more questions on the BLDC component in the near future. -- Original Message -- From: andy pugh bodge...@gmail.com To: Marius Liebenberg mar...@mastercut.co.za Cc: Enhanced Machine Controller (EMC) emc-users@lists.sourceforge.net Sent: 2015-01-30 14:54:06 Subject: Re: Re[2]: [Emc-users] BLDC Hal component On 30 January 2015 at 12:33, Marius Liebenberg mar...@mastercut.co.za wrote: 196V @ 8.5A and looks like a resolver feedback. These are the Lafert. The others I have not seen yet. That sounds a lot like what I have on my mill. Pico-systems have a 160V / 20A servo drive that can probably be made to work along with their resolver-to-quadrature converter. I think you would need advice from Jon as to how to commutate using the converter. It may be that the bldc component can help there. On my machine I am using a set of the Mesa 8i20 drives and the 7i49 resolver interface board. Because the 8i20 takes digital phase angle information I am not using the 7i49 analogue outputs, and had to add a 7i44 for the serial comms. The FPGA board on my system is the 5i23 but I think that 5i24 or 6i24 are cheaper and equivalent now. There are drives from the likes of AMC that take +/-10V command and hall signal patterns. The bldc component can convert resolver feedback from the 7i49 to hall patterns. This might also work with the Pico drives, but I think that they are PWM controlled rather than analogue. You almost certainly can't connect resolvers to the parallel port even through quadrature converters because the counts-per-rev is too high. The Pico boards count in hardware (and connect to the parport) so do work with their resolver to quadrature board. Whilst other options exist, the 5i23 / 7i49 / 7i44 / 8i20 combination is known to work, though is not inexpensive. -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto -- Dive into the World of Parallel Programming. The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Dive into the World of Parallel Programming. The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] BLDC Hal component
On 30 January 2015 at 14:41, Marius Liebenberg mar...@mastercut.co.za wrote: It's actually Pluk n lat vir jou eie gat It's like Dutch isn't it? English but spelt really badly :-) Pluck a lath for your own back -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto -- Dive into the World of Parallel Programming. The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] BLDC Hal component
If the parport is not the best option, what would you suggest? One obviously is Mesa but are there others that you know of? -- Original Message -- From: andy pugh bodge...@gmail.com To: Marius Liebenberg mar...@mastercut.co.za; Enhanced Machine Controller (EMC) emc-users@lists.sourceforge.net Sent: 2015-01-30 12:14:43 Subject: Re: [Emc-users] BLDC Hal component On 30 January 2015 at 09:31, Marius Liebenberg mar...@mastercut.co.za wrote: Will the parport be fast enough for this driver or does one need special hardware? If so, what is recommended? It is possible to use the parport. Someone has managed to spin some Fanuc motors with the Parport and AMC drives. http://youtu.be/l-MNy6-QanI I wouldn't recommend it, though. It's probably best to start with the motors and work backwards from there towards LinuxCNC. -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto -- Dive into the World of Parallel Programming. The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] BLDC Hal component
On 30 January 2015 at 09:31, Marius Liebenberg mar...@mastercut.co.za wrote: Will the parport be fast enough for this driver or does one need special hardware? If so, what is recommended? It is possible to use the parport. Someone has managed to spin some Fanuc motors with the Parport and AMC drives. http://youtu.be/l-MNy6-QanI I wouldn't recommend it, though. It's probably best to start with the motors and work backwards from there towards LinuxCNC. -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto -- Dive into the World of Parallel Programming. The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] BLDC Hal component
On 30 January 2015 at 12:33, Marius Liebenberg mar...@mastercut.co.za wrote: 196V @ 8.5A and looks like a resolver feedback. These are the Lafert. The others I have not seen yet. That sounds a lot like what I have on my mill. Pico-systems have a 160V / 20A servo drive that can probably be made to work along with their resolver-to-quadrature converter. I think you would need advice from Jon as to how to commutate using the converter. It may be that the bldc component can help there. On my machine I am using a set of the Mesa 8i20 drives and the 7i49 resolver interface board. Because the 8i20 takes digital phase angle information I am not using the 7i49 analogue outputs, and had to add a 7i44 for the serial comms. The FPGA board on my system is the 5i23 but I think that 5i24 or 6i24 are cheaper and equivalent now. There are drives from the likes of AMC that take +/-10V command and hall signal patterns. The bldc component can convert resolver feedback from the 7i49 to hall patterns. This might also work with the Pico drives, but I think that they are PWM controlled rather than analogue. You almost certainly can't connect resolvers to the parallel port even through quadrature converters because the counts-per-rev is too high. The Pico boards count in hardware (and connect to the parport) so do work with their resolver to quadrature board. Whilst other options exist, the 5i23 / 7i49 / 7i44 / 8i20 combination is known to work, though is not inexpensive. -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto -- Dive into the World of Parallel Programming. The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] BLDC Hal component
We have a saying in my language that roughly translated says : I have just picked a lashing stick for my own ass :) He said I should covert to steppers for the sake of cost and I said No lets try and make the servos work. I will have to look at Jon's stuff as well before I decide. Thanks for all the great info. I have a feeling though that I will ask some more questions on the BLDC component in the near future. -- Original Message -- From: andy pugh bodge...@gmail.com To: Marius Liebenberg mar...@mastercut.co.za Cc: Enhanced Machine Controller (EMC) emc-users@lists.sourceforge.net Sent: 2015-01-30 14:54:06 Subject: Re: Re[2]: [Emc-users] BLDC Hal component On 30 January 2015 at 12:33, Marius Liebenberg mar...@mastercut.co.za wrote: 196V @ 8.5A and looks like a resolver feedback. These are the Lafert. The others I have not seen yet. That sounds a lot like what I have on my mill. Pico-systems have a 160V / 20A servo drive that can probably be made to work along with their resolver-to-quadrature converter. I think you would need advice from Jon as to how to commutate using the converter. It may be that the bldc component can help there. On my machine I am using a set of the Mesa 8i20 drives and the 7i49 resolver interface board. Because the 8i20 takes digital phase angle information I am not using the 7i49 analogue outputs, and had to add a 7i44 for the serial comms. The FPGA board on my system is the 5i23 but I think that 5i24 or 6i24 are cheaper and equivalent now. There are drives from the likes of AMC that take +/-10V command and hall signal patterns. The bldc component can convert resolver feedback from the 7i49 to hall patterns. This might also work with the Pico drives, but I think that they are PWM controlled rather than analogue. You almost certainly can't connect resolvers to the parallel port even through quadrature converters because the counts-per-rev is too high. The Pico boards count in hardware (and connect to the parport) so do work with their resolver to quadrature board. Whilst other options exist, the 5i23 / 7i49 / 7i44 / 8i20 combination is known to work, though is not inexpensive. -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto -- Dive into the World of Parallel Programming. The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] BLDC Hal component
On 30 January 2015 at 13:16, Marius Liebenberg mar...@mastercut.co.za wrote: He said I should covert to steppers for the sake of cost and I said No lets try and make the servos work. I think that the servos + resolvers will work a fair bit better than steppers. I was rather upset when I found that my ebay bargain servos had resolvers, but now I am something of a fan of the devices. -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto -- Dive into the World of Parallel Programming. The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] BLDC Hal component
-- Original Message -- From: andy pugh bodge...@gmail.com To: Marius Liebenberg mar...@mastercut.co.za Cc: Enhanced Machine Controller (EMC) emc-users@lists.sourceforge.net Sent: 2015-01-30 15:34:16 Subject: Re: Re[4]: [Emc-users] BLDC Hal component On 30 January 2015 at 13:16, Marius Liebenberg mar...@mastercut.co.za wrote: He said I should covert to steppers for the sake of cost and I said No lets try and make the servos work. I think that the servos + resolvers will work a fair bit better than steppers. I was rather upset when I found that my ebay bargain servos had resolvers, but now I am something of a fan of the devices. I have to agree, if they are used correctly with good electronics to drive them, they are very good and they last. I have started looking at a drive using the STM32 series of MCU as there are a number of projects going on with them. There might be a modestly priced solution from that in the end. -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto -- Dive into the World of Parallel Programming. The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] BLDC Hal component
I have a feeling that these have resolver and hall sensors as there is huge number of wires on the plug. More that what a resolver will need. -- Original Message -- From: andy pugh bodge...@gmail.com To: Marius Liebenberg mar...@mastercut.co.za Cc: Enhanced Machine Controller (EMC) emc-users@lists.sourceforge.net Sent: 2015-01-30 15:34:16 Subject: Re: Re[4]: [Emc-users] BLDC Hal component On 30 January 2015 at 13:16, Marius Liebenberg mar...@mastercut.co.za wrote: He said I should covert to steppers for the sake of cost and I said No lets try and make the servos work. I think that the servos + resolvers will work a fair bit better than steppers. I was rather upset when I found that my ebay bargain servos had resolvers, but now I am something of a fan of the devices. -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto -- Dive into the World of Parallel Programming. The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] BLDC Hal component
On 30 January 2015 at 10:40, Marius Liebenberg mar...@mastercut.co.za wrote: If the parport is not the best option, what would you suggest? One obviously is Mesa but are there others that you know of? I initially wrote the component to support the 7i39, and then extended it for the 8i20, so its main use is for Mesa hardware. The Pico hardware includes hardware signal converters, so I am not clear if there is much applicability of bldc to Pico. Thinking further, the parallel port is probably more suitable than I thought, as the bldccomp typically runs in the servo thread, so the parallel port is quite fast enough to read hall signals and update a PWM value. The only place where the p-port will fail is if you are using an encoder and software encoder counting. What motor/drive combination do you have? -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto -- Dive into the World of Parallel Programming. The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] BLDC Hal component
-- Original Message -- From: andy pugh bodge...@gmail.com To: Marius Liebenberg mar...@mastercut.co.za; Enhanced Machine Controller (EMC) emc-users@lists.sourceforge.net Sent: 2015-01-30 13:10:14 Subject: Re: [Emc-users] BLDC Hal component On 30 January 2015 at 10:40, Marius Liebenberg mar...@mastercut.co.za wrote: If the parport is not the best option, what would you suggest? One obviously is Mesa but are there others that you know of? I initially wrote the component to support the 7i39, and then extended it for the 8i20, so its main use is for Mesa hardware. The Pico hardware includes hardware signal converters, so I am not clear if there is much applicability of bldc to Pico. Thinking further, the parallel port is probably more suitable than I thought, as the bldccomp typically runs in the servo thread, so the parallel port is quite fast enough to read hall signals and update a PWM value. The only place where the p-port will fail is if you are using an encoder and software encoder counting. What motor/drive combination do you have? I have Lafert motors and another make of what I am told are BLDC motors. No drives at the moment hence my search for relevant information. The budget on these are a bit low as I am fixing a machine and taking a machine to be fixed as payment. Both Routers with servos. No drives though. -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto -- Dive into the World of Parallel Programming. The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] BLDC Hal component
-- Original Message -- From: andy pugh bodge...@gmail.com To: Marius Liebenberg mar...@mastercut.co.za; Enhanced Machine Controller (EMC) emc-users@lists.sourceforge.net Sent: 2015-01-30 14:09:39 Subject: Re: [Emc-users] BLDC Hal component I have Lafert motors and another make of what I am told are BLDC motors. No drives at the moment hence my search for relevant information. What current, voltage and feedback type are they? 196V @ 8.5A and looks like a resolver feedback. These are the Lafert. The others I have not seen yet. -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto -- Dive into the World of Parallel Programming. The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] BLDC Hal component
I have Lafert motors and another make of what I am told are BLDC motors. No drives at the moment hence my search for relevant information. What current, voltage and feedback type are they? -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto -- Dive into the World of Parallel Programming. The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
