I've got several of these motors out in the garage and I don't think any of them would handle AC. The ones I've got are real DC motors with quite a few windings and a massive commutator.
There were at least two DC motors used in these, rated at 3 hp and 5 hp nominal. If you look at the drive for these you'll see the ability to source about 100 amps at 90 volts -- way more than nominal. That is how they were able to get up to speed, 3000 or 3600 in a couple of revolutions. They also used a large crowbar to kill off deceleration when regenerated voltage got to about 105 volts. That stopped them in a couple turns also. Rayh On Wed, 2007-10-31 at 14:23 -0700, Kirk Wallace wrote: > What is the best way to drive a 4hp, 90VDC, 40A spindle motor on a > Hardinge CHNC? Some of the large DC motors I have seen, look like > universal motors which would operate on AC or DC. Does anyone know if > the CHNC spindle motor could work on AC? I'm thinking, a few dimmer > switches in parallel and a stepper to turn the dials ;). I wonder if it > would be cheaper to go with a 3-phase motor and VFD. Thanks. ------------------------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now >> http://get.splunk.com/ _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
