I have some brushless servos that I am trying to find some drives for. I want to use them with Linuxcnc and I don't have any other hardware to go with them (yet).
They are old ElectroCraft servos. XBR-2910 (part# 1834629030) Specs: Torque Constant (Kt) : 1.8 in-lbs/ amp Voltage Constant (Ke) : 19.9 - 23.1 V/KRPM Rated Voltage : 230 volts Continuous Speed (no load) : 6000 rpm Peak Torque : 18.5 in-lbs Continuous Torque : 6.1 in-lbs Inductance : 5.8 mH Encoder count: 2,000 ppr Encoder Voltage : 5 Vdc Encoder current: 225 mA Any recommendations for a good inexpensive drive option for these? This will be used at lower RPMs (less than 2k rpm) and the might be only just adequate for this application (but they were really cheap), so I need to get the most I can out of them. Is there enough of an advantage to sinusoidal commutation to justify the added expense of a sinusoidal drive, or is an inexpensive trapezoidal drive good enough? Some of the ebay drives I am considering are: AMC SE10A20AC http://www.a-m-c.com/download/datasheet/se10a20ac.pdf (there are some on ebay for $200 ish) would these have enough juice for these motors? Copley Controls 7series http://www.copleycontrols.com/Motion/pdf/7225ac.pdf (there are some on ebay for $150 ish) might have trouble setting up the 2 sine wave signals? I like that these drives look like they don't need a separate power supply (additional expense) Or a Mesa 8i20 but then I have to buy or build a power supply. The nice digital drives that can do sine commutation seem to be few and far between on ebay and when they do show up they tend to be a bit spendy. If trapezoidal commutation would be good enough there seems to be a lot of inexpensive AMC drives on ebay that might work. Like a B25A20AC My lack of any real experience is showing, but at some point you just need to jump in the pool. Todd Zuercher P. Graham Dunn Inc. <http://www.pgrahamdunn.com/index.php> 630 Henry Street Dalton, Ohio 44618 Phone: (330)828-2105ext. 2031 -- P. Graham Dunn Phone: 330-828-2105 E-mail: [email protected] 630 Henry St. Dalton, OH 44618 www.pgrahamdunn.com ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
