On Mon, 2011-03-07 at 22:03 -0800, Clint Washburn wrote: > I am in the process of converting my 1978 Hitachi Seiki CNC lathe to EMC. > It currently has a 7.5 KW dc motor that used to be powered by FUJI SCR > drive. My first problem my house does not have 3 phase power. I am having > to work around this issue with my whole retrofit. I wish to convert this to > a 3 phase AC spindle. What VFD's are people having success with as a > spindle drive with single phase power? Is it realistic to have a 10 hp 3 > phase spindle on single phase power? or will I have to go with a spindle > motor closer to around 7.5hp instead? What is everyone's input on this? > > Clint Washburn >
Just to be totally contrary if the dc motor is working fine then use a rotary single phase to three phase converter. Lots of stuff on the web about how to make one. It won't be perfect but probably good enough to power the fuji controller. I used a 5 hp homebuilt for several years before upgrading to a 30 Hp commercial job to power the Mazak. The commercial one is much better balanced but the other was adequate. By OK I mean it balance to about 240, 240, 220 for the homebuilt. The commercial is within 5 v. YMMV HTH Dave > > > __________ Information from ESET NOD32 Antivirus, version of virus signature > database 5934 (20110307) __________ > > The message was checked by ESET NOD32 Antivirus. > > http://www.eset.com > > > > ------------------------------------------------------------------------------ > What You Don't Know About Data Connectivity CAN Hurt You > This paper provides an overview of data connectivity, details > its effect on application quality, and explores various alternative > solutions. http://p.sf.net/sfu/progress-d2d > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users ------------------------------------------------------------------------------ What You Don't Know About Data Connectivity CAN Hurt You This paper provides an overview of data connectivity, details its effect on application quality, and explores various alternative solutions. http://p.sf.net/sfu/progress-d2d _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
