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-----Original Message----- From: [email protected] Date: Fri, 30 Sep 2011 23:52:46 To: <[email protected]> Reply-To: [email protected] Subject: Emc-users Digest, Vol 65, Issue 77 Send Emc-users mailing list submissions to [email protected] To subscribe or unsubscribe via the World Wide Web, visit https://lists.sourceforge.net/lists/listinfo/emc-users or, via email, send a message with subject or body 'help' to [email protected] You can reach the person managing the list at [email protected] When replying, please edit your Subject line so it is more specific than "Re: Contents of Emc-users digest..." Today's Topics: 1. Re: 3-phase pwmgens for 7i39 (andy pugh) 2. OT: drilling square holes (Roland Jollivet) 3. Re: OT: drilling square holes (andy pugh) 4. Re: OT: drilling square holes (Viesturs L?cis) 5. Re: 3-phase pwmgens for 7i39 (Viesturs L?cis) 6. Re: 3-phase pwmgens for 7i39 (andy pugh) 7. BLDC Component With Induction Motor? (Kirk Wallace) ---------------------------------------------------------------------- Message: 1 Date: Fri, 30 Sep 2011 19:51:57 +0100 From: andy pugh <[email protected]> Subject: Re: [Emc-users] 3-phase pwmgens for 7i39 To: "Enhanced Machine Controller (EMC)" <[email protected]> Message-ID: <CAN1+YZUsR=qKF+4C0mZChsxEPcP-sw-6kZJaKL7J8A6-WcL=h...@mail.gmail.com> Content-Type: text/plain; charset=UTF-8 On 30 September 2011 19:41, Viesturs L?cis <[email protected]> wrote: > Is there any chance that I have to set something that is not 8? That > Keling's spreadsheet says that motor has 8 poles. With the motor in 0 mode and frequency 0 with low current you should be able to turn the motor by hand and feel the poles. (Actually, the docs say to use "n" not "0" for dumb-mode., so cfg=n,n,n) 4 notches = 8 poles. > >> Also, there is a 50% chance that the bldc.N.scale needs to be a >> negative number. > > Does not work with or without "-" sign in front of the scale value. It could still be the wrong Hall pattern then. You say that 4 of them worked? It uses which transition it is to infer the angle, if the transition sequence isn't quite right, then it won't work. You could try qhi, it is probable that the encoder index is at motor zero. -- atp "Torque wrenches are for the obedience of fools and the guidance of wise men" ------------------------------ Message: 2 Date: Fri, 30 Sep 2011 21:02:39 +0200 From: Roland Jollivet <[email protected]> Subject: [Emc-users] OT: drilling square holes To: "Enhanced Machine Controller (EMC)" <[email protected]> Message-ID: <caktodyjk07uxt4kwsl3ubcb7kevk89esuiogpt+ek_j3nb8...@mail.gmail.com> Content-Type: text/plain; charset=ISO-8859-1 Thought this may be of interest.. http://www.youtube.com/watch?v=d9wfgpqs2dE ------------------------------ Message: 3 Date: Fri, 30 Sep 2011 20:14:34 +0100 From: andy pugh <[email protected]> Subject: Re: [Emc-users] OT: drilling square holes To: "Enhanced Machine Controller (EMC)" <[email protected]> Message-ID: <CAN1+YZVEzoAs2QXNZdN8zyN-DeJxMsWdX8BdgnEJ6-mV+4h=k...@mail.gmail.com> Content-Type: text/plain; charset=ISO-8859-1 On 30 September 2011 20:02, Roland Jollivet <[email protected]> wrote: > Thought this may be of interest.. > > http://www.youtube.com/watch?v=d9wfgpqs2dE You can do that in EMC2 without special tools: http://www.youtube.com/watch?v=T4q8gCpeY1A -- atp "Torque wrenches are for the obedience of fools and the guidance of wise men" ------------------------------ Message: 4 Date: Fri, 30 Sep 2011 22:15:28 +0300 From: Viesturs L?cis <[email protected]> Subject: Re: [Emc-users] OT: drilling square holes To: "Enhanced Machine Controller (EMC)" <[email protected]> Message-ID: <cakney+fesgvg59k5eed2d9w4zuwvkcdg2gvepgq93fmcpbu...@mail.gmail.com> Content-Type: text/plain; charset=ISO-8859-1 Thanks for sharing! I doubt that I would have imagined something like that... Viesturs 2011/9/30 Roland Jollivet <[email protected]>: > Thought this may be of interest.. > > http://www.youtube.com/watch?v=d9wfgpqs2dE > ------------------------------------------------------------------------------ > All of the data generated in your IT infrastructure is seriously valuable. > Why? It contains a definitive record of application performance, security > threats, fraudulent activity, and more. Splunk takes this data and makes > sense of it. IT sense. And common sense. > http://p.sf.net/sfu/splunk-d2dcopy2 > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users > ------------------------------ Message: 5 Date: Fri, 30 Sep 2011 22:29:24 +0300 From: Viesturs L?cis <[email protected]> Subject: Re: [Emc-users] 3-phase pwmgens for 7i39 To: "Enhanced Machine Controller (EMC)" <[email protected]> Message-ID: <cakney+dakitv-zy6-zvjdwzcexs0j3c8fvu5u5fpgj-zkeb...@mail.gmail.com> Content-Type: text/plain; charset=UTF-8 2011/9/30 andy pugh <[email protected]>: > On 30 September 2011 19:41, Viesturs L?cis <[email protected]> wrote: > >> Is there any chance that I have to set something that is not 8? That >> Keling's spreadsheet says that motor has 8 poles. > > With the motor in 0 mode and frequency 0 with low current you should > be able to turn the motor by hand and feel the poles. > (Actually, the docs say to use "n" not "0" for dumb-mode., so cfg=n,n,n) > 4 notches = 8 poles. >> >>> Also, there is a 50% chance that the bldc.N.scale needs to be a >>> negative number. >> >> Does not work with or without "-" sign in front of the scale value. > > It could still be the wrong Hall pattern then. You say that 4 of them worked? > It uses which transition it is to infer the angle, if the transition > sequence isn't quite right, then it won't work. > > You could try qhi, it is probable that the encoder index is at motor zero. Incredible! I found 2 notches, so decided for 4 poles, added "minus" for scale and motor now turns smoothly and silently also with cfg=qh,qh,qh What should be my next step? Installing motor in machine and trying to tune PID loop? I tried assigning bldc.2.value to motor.2.pos-cmd and then tried to jog it - it starts turning and does not stop until I press F2. Viesturs ------------------------------ Message: 6 Date: Fri, 30 Sep 2011 20:59:39 +0100 From: andy pugh <[email protected]> Subject: Re: [Emc-users] 3-phase pwmgens for 7i39 To: "Enhanced Machine Controller (EMC)" <[email protected]> Message-ID: <can1+yzvct3se4bjaj6jrnutemxw6tompuzjdh3okh3+8w9j...@mail.gmail.com> Content-Type: text/plain; charset=UTF-8 On 30 September 2011 20:29, Viesturs L?cis <[email protected]> wrote: > Incredible! > I found 2 notches, so decided for 4 poles, added "minus" for scale and > motor now turns smoothly and silently also with cfg=qh,qh,qh And now you see why I decided to write that Wiki page on this subject, and also why I haven't finished it. :-( > What should be my next step? > Installing motor in machine and trying to tune PID loop? I would make a PID loop for the bare motor first. It won't be easy to tune, but it will be a start. > I tried assigning bldc.2.value to motor.2.pos-cmd and then tried to > jog it - it starts turning and does not stop until I press F2. It will, you are telling the motor to spin at X mm? You need motor-pos-cmd to pid.command, encoder-position to pid.feedback and pid.output to bldc.value -- atp "Torque wrenches are for the obedience of fools and the guidance of wise men" ------------------------------ Message: 7 Date: Fri, 30 Sep 2011 16:52:36 -0700 From: Kirk Wallace <[email protected]> Subject: [Emc-users] BLDC Component With Induction Motor? To: "Enhanced Machine Controller (EMC)" <[email protected]> Message-ID: <1317426756.1771.43.camel@910> Content-Type: text/plain; charset="UTF-8" Andy, have you tried your BLDC component on a three phase induction motor, or in other words as an EMC2 based VFD? -- Kirk Wallace http://www.wallacecompany.com/machine_shop/ http://www.wallacecompany.com/E45/index.html California, USA ------------------------------ ------------------------------------------------------------------------------ All of the data generated in your IT infrastructure is seriously valuable. Why? It contains a definitive record of application performance, security threats, fraudulent activity, and more. Splunk takes this data and makes sense of it. IT sense. And common sense. http://p.sf.net/sfu/splunk-d2dcopy2 ------------------------------ _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users End of Emc-users Digest, Vol 65, Issue 77 ***************************************** ------------------------------------------------------------------------------ All of the data generated in your IT infrastructure is seriously valuable. Why? It contains a definitive record of application performance, security threats, fraudulent activity, and more. Splunk takes this data and makes sense of it. IT sense. And common sense. http://p.sf.net/sfu/splunk-d2dcopy2 _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
