I would first look on eBay for DC drives within the 90V 40A range. All the drives I have worked with have current limit adjustment, you could use a 100A drive adjusted to 40% current limit. You may have to get a higher voltage drive and limit the output voltage by with the Max Speed adjustment. Many industrial applications are replacing DC motors & drives with AC VS motors and drives, ie there should be a surplus of DC drives.
----- Original Message ----- From: "Kirk Wallace" <[EMAIL PROTECTED]> To: "Enhanced Machine Controller (EMC)" <emc-users@lists.sourceforge.net> Sent: Wednesday, October 31, 2007 3:23 PM Subject: [Emc-users] Off Topic, DC Spindle Motor > 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. > -- > Kirk Wallace (California, USA > http://www.wallacecompany.com/machine_shop/ > Hardinge HNC lathe > Bridgeport mill conversion pending > Zubal lathe conversion pending) > > > ------------------------------------------------------------------------- > 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 ------------------------------------------------------------------------- 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
