<HTML><HEAD></HEAD> <BODY dir=ltr> <DIV dir=ltr> <DIV style="FONT-SIZE: 12pt; FONT-FAMILY: 'Arial'; COLOR: #000000"> <DIV>Have you connected to a laptop? I haven’t done mine in about 12 years. </DIV> <DIV>Wondering if the read out from that would indicate the problem.</DIV> <DIV> </DIV> <DIV> </DIV> <DIV style='FONT-SIZE: small; TEXT-DECORATION: none; FONT-FAMILY: "Calibri"; FONT-WEIGHT: normal; COLOR: #000000; FONT-STYLE: normal; DISPLAY: inline'> <DIV style="FONT: 10pt tahoma"> <DIV> </DIV> <DIV style="BACKGROUND: #f5f5f5"> <DIV style="font-color: black"><B>From:</B> <A title=etpost@drmm.net href="mailto:etpost@drmm.net">David Roden</A> </DIV> <DIV><B>Sent:</B> Thursday, August 15, 2019 3:12 PM</DIV> <DIV><B>To:</B> <A title=elec-trak@cosmos.phy.tufts.edu href="mailto:elec-trak@cosmos.phy.tufts.edu">elec-trak@cosmos.phy.tufts.edu</A> </DIV> <DIV><B>Subject:</B> Re: (ET) Strange Alltrax behavior</DIV></DIV></DIV> <DIV> </DIV></DIV> <DIV style='FONT-SIZE: small; TEXT-DECORATION: none; FONT-FAMILY: "Calibri"; FONT-WEIGHT: normal; COLOR: #000000; FONT-STYLE: normal; DISPLAY: inline'>On 15 Aug 2019 at 13:49, Steve Gaarder wrote:<BR><BR>> Still no light and no nuthin. What's left besides a dead controller?<BR><BR>That sounds like bad news to me. <BR><BR>If you're sure that both traction and logic power are getting to the <BR>controller (and make sure they are), then most likely its logic has broken <BR>down (kind of like logic in general around the world these days).<BR><BR>Lots of folks have fitted ETs with Curtis controllers. However, if I were <BR>replacing my Alltrax today, I'd probably try a 4QD. <BR><BR>Despite their name, 4QD controllers are not all 4-quadrant type. They're <BR>designed for PM motors, which IMO makes them more appropriate for our <BR>separately excited motors than Curtis's series motor controllers. But I'm <BR>not a EE ...<BR><BR><BR>David Roden - Akron, Ohio, USA<BR><BR>= = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = <BR>Note: mail sent to the "etpost" address will not reach me. To send <BR>me a private message, please use the address shown at the bottom<BR>of this page : http://www.evdl.org/help/<BR>= = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =<BR><BR><BR><BR><BR>_______________________________________________<BR>Elec-trak mailing list<BR>Elec-trak@cosmos.phy.tufts.edu<BR>https://cosmos.phy.tufts.edu/mailman/listinfo/elec-trak</DIV></DIV></DIV></BODY></HTML>