Re: [Emc-users] OT: Question about Bergerda servo motors and drives
Thank you John for your quick response. Indeed I'm talking with Donald too and it seems really nice and responsive. About your spindle whining a little bit. Could this be solved offsetting the 0 speed reference until it really hits 0 volts? I remember I did this with the yaskawa VFD to really "align" the 0 volts reference with 0 hz or motion stopped on the VFD. I think I'm going to order one kit as soon as possible to test it and use it as a spindle for a live tool on the lathe (with a proper planetary reducer). But, from your experience I guess it's a sure bet to give them a try. El lun., 22 jun. 2020 a las 20:59, John Dammeyer () escribió: > I think I paid with credit card. My initial contact was through Alibaba. > Later I've had many discussions with Donald Chen. His English is good > enough to get by although he might be using Google Translate. He can ask > the engineers or pass on questions to them. > > I've used the 400W model in step/dir mode. The spindle 1.8kW is currently > used in 0-10V with direction input. One I finish a few things I'll switch > it over to the second port of the MESA 7i92H and change it to step/dir mode > too.I find when the spindle stops with 0-10V mode that it sometimes > whines a bit. If I twist on the spindle I can make it stop. I think it's > just at some indefinite position based on when the voltage input went below > the motion cut-off. > > I had similar noise from the STMBL drive on DC Servos but never with the > STMBL on the AC servo. And I don't recall the 400W AC servo making that > noise. > > Also, I think when the spindle has stopped I may want to add a time delay > and a specific Spindle Motor Enable so that when it's stopped it's also not > being held in position. Not really needed in 0-10V mode. That might even > be a parameter. I should check. > > The motor encoder output can be divided down. The step/dir can also be > scaled from the 2500 lines to whatever you want. I ran as if it were a 250 > line encoder (1000PPR) to match the US Digital (and later CUI) encoder. > The CUI was programmed with the AMT ViewPoint software to also produce 250 > lines on the DC servo. > > John > > > > -Original Message- > > From: Leonardo Marsaglia [mailto:ldmarsag...@gmail.com] > > Sent: June-22-20 3:19 PM > > To: Enhanced Machine Controller (EMC) > > Subject: [Emc-users] OT: Question about Bergerda servo motors and drives > > > > Hello guys, > > > > I'm planning to buy some servo motors for a router I'm slowly building > and > > I remember a few months ago John Dammeyer told me about these Bergerda > > servo motors and how good they are. > > > > I would like to know a little bit more about anyone having experience > with > > these servos. I motsly interested in the E series since they have a 17 > bits > > absolute encoder and I assume they can be scaled to whatever value you > > want. I plan to use them in position mode with pulse + dir steps. > > > > Also, they told me the best way to place the payment is via Western > Union, > > and I wanted to know how the purchase went for John or any other in the > > list. Just to have a little bit more of confidence before trying to place > > an order. > > > > As always thank you for your time and help! > > > > Leonardo > > > > ___ > > 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
Re: [Emc-users] OT: Question about Bergerda servo motors and drives
I think I paid with credit card. My initial contact was through Alibaba. Later I've had many discussions with Donald Chen. His English is good enough to get by although he might be using Google Translate. He can ask the engineers or pass on questions to them. I've used the 400W model in step/dir mode. The spindle 1.8kW is currently used in 0-10V with direction input. One I finish a few things I'll switch it over to the second port of the MESA 7i92H and change it to step/dir mode too.I find when the spindle stops with 0-10V mode that it sometimes whines a bit. If I twist on the spindle I can make it stop. I think it's just at some indefinite position based on when the voltage input went below the motion cut-off. I had similar noise from the STMBL drive on DC Servos but never with the STMBL on the AC servo. And I don't recall the 400W AC servo making that noise. Also, I think when the spindle has stopped I may want to add a time delay and a specific Spindle Motor Enable so that when it's stopped it's also not being held in position. Not really needed in 0-10V mode. That might even be a parameter. I should check. The motor encoder output can be divided down. The step/dir can also be scaled from the 2500 lines to whatever you want. I ran as if it were a 250 line encoder (1000PPR) to match the US Digital (and later CUI) encoder. The CUI was programmed with the AMT ViewPoint software to also produce 250 lines on the DC servo. John > -Original Message- > From: Leonardo Marsaglia [mailto:ldmarsag...@gmail.com] > Sent: June-22-20 3:19 PM > To: Enhanced Machine Controller (EMC) > Subject: [Emc-users] OT: Question about Bergerda servo motors and drives > > Hello guys, > > I'm planning to buy some servo motors for a router I'm slowly building and > I remember a few months ago John Dammeyer told me about these Bergerda > servo motors and how good they are. > > I would like to know a little bit more about anyone having experience with > these servos. I motsly interested in the E series since they have a 17 bits > absolute encoder and I assume they can be scaled to whatever value you > want. I plan to use them in position mode with pulse + dir steps. > > Also, they told me the best way to place the payment is via Western Union, > and I wanted to know how the purchase went for John or any other in the > list. Just to have a little bit more of confidence before trying to place > an order. > > As always thank you for your time and help! > > Leonardo > > ___ > 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] OT: Question about Bergerda servo motors and drives
Hello guys, I'm planning to buy some servo motors for a router I'm slowly building and I remember a few months ago John Dammeyer told me about these Bergerda servo motors and how good they are. I would like to know a little bit more about anyone having experience with these servos. I motsly interested in the E series since they have a 17 bits absolute encoder and I assume they can be scaled to whatever value you want. I plan to use them in position mode with pulse + dir steps. Also, they told me the best way to place the payment is via Western Union, and I wanted to know how the purchase went for John or any other in the list. Just to have a little bit more of confidence before trying to place an order. As always thank you for your time and help! Leonardo ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
