CAD CAM EDM DRO - Yahoo Group Archive

Re: Looking for mini-VFD for 120VAC/1ph

Posted by caudlet
on 2006-08-05 07:06:17 UTC
--- In CAD_CAM_EDM_DRO@yahoogroups.com, JanRwl@... wrote:
>
>
> In a message dated 8/4/2006 10:17:37 P.M. Central Daylight Time,
> indigo_red@... writes:
>
> so neither can get proper triggering off of the AC zero
> crossings.
>
>
>
> A VFD doesn't WORK that way!
>
>
> [Non-text portions of this message have been removed]
>
The comment was about two conventional phase controls (on on the
router and another external) not working. The post while mentioning
a VFD was about speed control of the trim router. All the VFD's I
have seen are to control 3 phase AC motors. Since the speed of most
AC motors is contolled by the number of stators and poles and very
little by the base frequency a VFD is not practical for single phase
motors and for a universal motor only the voltage reduction will
vary the speed. Lower voltage also means lower torque so at speeds
below 50% you start to get motor stalls under load,

Discussion Thread

TheDragonPit 1999-09-22 05:29:43 UTC L297/L298 Phil Mattison 2006-08-04 08:53:05 UTC L297/L298 vrsculptor 2006-08-04 09:18:58 UTC Re: L297/L298 Jon Elson 2006-08-04 09:42:09 UTC Re: [CAD_CAM_EDM_DRO] L297/L298 Lester Caine 2006-08-04 09:46:23 UTC Re: [CAD_CAM_EDM_DRO] L297/L298 Wayne C. Gramlich 2006-08-04 10:34:25 UTC Re: L297/L298 Phil Mattison 2006-08-04 11:17:44 UTC Re: [CAD_CAM_EDM_DRO] Re: L297/L298 Lester Caine 2006-08-04 12:51:33 UTC Re: [CAD_CAM_EDM_DRO] Re: L297/L298 John Dammeyer 2006-08-04 13:22:58 UTC RE: [CAD_CAM_EDM_DRO] Re: L297/L298 Sebastien Bailard - Dubsen 2006-08-04 14:18:42 UTC Re: [CAD_CAM_EDM_DRO] Re: L297/L298 JanRwl@A... 2006-08-04 14:55:31 UTC Re: [CAD_CAM_EDM_DRO] Re: L297/L298 ballendo 2006-08-04 15:07:45 UTC Re: L297/L298 And a "correction" Alan Marconett 2006-08-04 15:18:52 UTC RE: [CAD_CAM_EDM_DRO] L297/L298 John Dammeyer 2006-08-04 15:29:14 UTC RE: [CAD_CAM_EDM_DRO] Re: L297/L298 Phil Mattison 2006-08-04 16:49:22 UTC Re: [CAD_CAM_EDM_DRO] Re: L297/L298 And a "correction" Doug Fortune 2006-08-04 17:27:23 UTC Looking for mini-VFD for 120VAC/1ph Lee Studley 2006-08-04 20:17:14 UTC Re: Looking for mini-VFD for 120VAC/1ph afogassa 2006-08-04 20:33:32 UTC Re: Looking for mini-VFD for 120VAC/1ph caudlet 2006-08-04 21:11:38 UTC Re: Looking for mini-VFD for 120VAC/1ph P. J. Hicks 2006-08-04 21:41:10 UTC Cameras JanRwl@A... 2006-08-04 21:57:27 UTC Re: [CAD_CAM_EDM_DRO] Looking for mini-VFD for 120VAC/1ph JanRwl@A... 2006-08-04 22:11:51 UTC Re: [CAD_CAM_EDM_DRO] Re: Looking for mini-VFD for 120VAC/1ph Peter Reilley 2006-08-05 06:16:17 UTC Re: [CAD_CAM_EDM_DRO] Cameras caudlet 2006-08-05 07:06:17 UTC Re: Looking for mini-VFD for 120VAC/1ph Doug Fortune 2006-08-05 08:38:59 UTC Re: Looking for mini-VFD for 120VAC/1ph Alan Marconett 2006-08-05 09:20:33 UTC Re: [CAD_CAM_EDM_DRO] Looking for mini-VFD for 120VAC/1ph turbulatordude 2006-08-05 09:35:13 UTC Re: Looking for mini-VFD for 120VAC/1ph ballendo 2006-08-05 11:26:45 UTC Re: L297/L298 And a "correction" ballendo 2006-08-05 11:29:13 UTC Re: Looking for mini-VFD for 120VAC/1ph ballendo 2006-08-05 11:31:37 UTC OT Re: Looking for mini-VFD for 120VAC/1ph Wayne C. Gramlich 2006-08-07 20:50:07 UTC Re: L297/L298 Phil Mattison 2006-08-08 07:31:40 UTC Re: L297/L298 Lester Caine 2006-08-08 11:58:18 UTC Re: [CAD_CAM_EDM_DRO] Re: L297/L298 Wayne C. Gramlich 2006-08-08 21:13:53 UTC Re: L297/L298 And a "correction" Mariss Freimanis 2006-08-08 21:34:55 UTC Re: L297/L298 And a "correction" ballendo 2006-08-08 22:01:43 UTC Re: L297/L298 And a "correction" Jon Elson 2006-08-08 22:53:03 UTC Re: [CAD_CAM_EDM_DRO] Re: L297/L298 And a "correction" Wayne C. Gramlich 2006-08-09 10:01:20 UTC Re: L297/L298 And a "correction" John Dammeyer 2006-08-09 10:17:28 UTC RE: [CAD_CAM_EDM_DRO] Re: L297/L298 And a "correction" Alan Marconett 2006-08-09 10:47:18 UTC RE: [CAD_CAM_EDM_DRO] Re: L297/L298 And a "correction" Wayne C. Gramlich 2006-08-11 22:18:42 UTC Re: L297/L298 And a "correction" Lester Caine 2006-08-11 23:01:02 UTC Re: [CAD_CAM_EDM_DRO] Re: L297/L298 And a "correction" Wayne C. Gramlich 2006-08-13 11:00:29 UTC Re: L297/L298 And a "correction" Lester Caine 2006-08-13 13:03:35 UTC Re: [CAD_CAM_EDM_DRO] Re: L297/L298 And a "correction" Steve Blackmore 2006-08-13 16:53:12 UTC Re: [CAD_CAM_EDM_DRO] Re: L297/L298 And a "correction" Lester Caine 2006-08-13 23:05:15 UTC Re: [CAD_CAM_EDM_DRO] Re: L297/L298 And a "correction" Vlad Krupin 2006-09-01 22:47:16 UTC Re: [CAD_CAM_EDM_DRO] L297/L298 turbulatordude 2006-09-02 08:53:04 UTC Re: L297/L298 Vlad Krupin 2006-09-02 22:16:37 UTC Re: [CAD_CAM_EDM_DRO] Re: L297/L298