http://www.electronicsam.com/images/KandT/pcbmill/bldcenc2.jpg
The keling servos I got (also the KL23BLS-115) have 2 very shallow tapped holes that line up to the mounting holes of the encoder. I found some laptop assembly screws that just happened to be the right length. Mariss seems to love these encoders over the cheap us-digital ones for his step/dir servo drives.... YMMV sam On 1/7/2010 03:36 PM, Flying Electron wrote: > Wow! Thank you so much for the link. The amps on ebay looks pretty > much exactly what I am looking for. I looked at the datasheet for the > issue with the drive inputs being commoned at +5V like you pointed out, > but I'm pretty sure I can hack up something to deal with that, like run > the signals through a microcontroller to do whatever translation is > necessary. I especially like that they are all mounted in a nice box > for me already :-) > > Getting closer. Mesa card + Servo Amps are picked out. Keling motors > look good. > > Do you know if that amt102-v encoder need anything special to mount on > the back of a NEMA 23 brushless motor like an adapter plate or anything > like that? Or do encoders and motors have standard mounting patterns so > that all encoders fit all motors nicely? > > Yesterday I had no idea what I needed to buy or even what questions to > ask, and today everything looks doable. > > > > sam sokolik wrote: > >> there are always deals if you are patient. Like... >> *KL23BLS-115*<KL23BLS_115.pdf>*: $52/pcs brushless servos >> digikey amt102-v encoder 29.95.<-up to 2048 line - adjustable. >> ebay 3 amc amplifiers that take pwm+dir >> http://cgi.ebay.com/3-AXIS-A-M-C-PWM-Brushless-SERVO-AMPLIFIER-ASSEMBLY-NEW_W0QQitemZ260516353589QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item3ca7fc1635 >> 179.95 >> >> Not including shipping for 3 axis... (not including mesa hardware) >> $425.80 >> closed loop - priceless... ;) >> >> You would want to do your homework though - like the drive inputs seem >> to be common-ed to +5v. (probably not an issue) >> (if I did the math right) >> sam >> >> >> * >> On 1/7/2010 01:29 PM, Flying Electron wrote: >> >> >>> I'm deciding on what servo drive to use with the mesa FPGA card and it >>> doesn't look too bad since there are not too many low cost options. I'm >>> constrained to a NEMA 23 size motor since a NEMA 23 stepper is on the >>> machine right now and I want it to be a direct swap. So far I've found >>> from searching on google and from people's suggestions here on the >>> mailing list: >>> >>> Drives >>> ------- >>> [brushless] Pico Brushless PWM Servo Amp $150 >>> [brushed] Pico PWM Servo Amplifier $125 >>> >>> Motors >>> -------- >>> [brushless] Pico Size 23 Brushless Servo (61ozin continous, 180ozin >>> peak, 1000 CPR) $120 >>> [brushless] Keling KL23BLS-115 Brushless Servo (61ozin continous, 180 >>> ozin peak, 1000 CPR) $134 >>> [brushed] Keling KL23-130-60 Brushed Servo (50ozin continous, 350ozin >>> peak, 1000 CPR) $162 >>> >>> Not Suitable >>> ------------- >>> dmm-tech.com -- RS232 based communication not PWM >>> gecko -- EMC2 cannot control PID loop (step/dir input, not >>> pwm) >>> viper -- EMC2 cannot control PID loop (step/dir input, >>> not pwm) >>> rutex -- EMC2 cannot control PID loop (step/dir input, >>> not pwm) >>> >>> Most of the servo drives I have found have the PID loop built into >>> them. Is this the normal case? >>> >>> Is it possible to run a brushed DC servo with just a simple H-Bridge >>> controlled directly by the PWM output and a direction signal? I was >>> looking at the Freescale MC33886 which I think could make a very simple >>> and cheap H-Bridge. >>> http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=MC33886VW-ND >>> <http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=MC33886VW-ND> >>> >>> Anybody know of any companies or products I may have missed in my search? >>> >>> >>> >>> >>> ------------------------------------------------------------------------------ >>> This SF.Net email is sponsored by the Verizon Developer Community >>> Take advantage of Verizon's best-in-class app development support >>> A streamlined, 14 day to market process makes app distribution fast and easy >>> Join now and get one step closer to millions of Verizon customers >>> http://p.sf.net/sfu/verizon-dev2dev >>> _______________________________________________ >>> Emc-users mailing list >>> Emc-users@lists.sourceforge.net >>> https://lists.sourceforge.net/lists/listinfo/emc-users >>> >>> >>> >>> >> ------------------------------------------------------------------------------ >> This SF.Net email is sponsored by the Verizon Developer Community >> Take advantage of Verizon's best-in-class app development support >> A streamlined, 14 day to market process makes app distribution fast and easy >> Join now and get one step closer to millions of Verizon customers >> http://p.sf.net/sfu/verizon-dev2dev >> _______________________________________________ >> Emc-users mailing list >> Emc-users@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/emc-users >> >> > ------------------------------------------------------------------------------ > This SF.Net email is sponsored by the Verizon Developer Community > Take advantage of Verizon's best-in-class app development support > A streamlined, 14 day to market process makes app distribution fast and easy > Join now and get one step closer to millions of Verizon customers > http://p.sf.net/sfu/verizon-dev2dev > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > > ------------------------------------------------------------------------------ This SF.Net email is sponsored by the Verizon Developer Community Take advantage of Verizon's best-in-class app development support A streamlined, 14 day to market process makes app distribution fast and easy Join now and get one step closer to millions of Verizon customers http://p.sf.net/sfu/verizon-dev2dev _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
