Fitting a 14 pin remote control to an engine drive welder

User Bp · 2016-03-10T03:09:17+00:00

I've recently acquired a newish (early '90's) Miller Legend AEAD-200LE welder and subsequently an HF251D1 arc starter with a TIG torch. The welder does not have remote control, and by all accounts a footpedal (or equivalent) current control is nice to have. Miller apparently offered a 14 pin remote as an option on the welder, but it was never common and hasn't been available for some years now. Much Google searching reveals considerable interest in adding a remote control to Miller Legends, but no indication of how to do it (nor any hint why it can't/shouldn't/won'twork) be done emerges. The welder manual shows a schematic complete with component values, but without knowledge of how both the welder and the remote control are intended to work it's not trivial to duplicate the functions of the board. I've been unable to find aftermarket remotes for the Miller Legend, though units do exist for larger Miller and Lincolnmachines. I inquired of one vendor and was rebuffed with surprising speed, saying simply they don't have the part. It's hard to believe the Legend is all that different. Does anybody know what the impediment is? bob prohaska

Mar 10, 2016 42 Replies

Rate this thread:

Jim Wilkins 10 years ago

formatting link

Vote

User Bp 10 years ago

A very helpful description of electrical discharges. It doesn't get much into AC effects, however.

Welding is probably somewhat unique, in that practically all of the work on gaseous electronics was motivated by rectifier and amplifier applications, where the current is varying DC. Nobody was much interested in in the regime corresponding to welding conditions. When things start to melt the tube designers usually used a bigger tube.....

8-)

bob p

Vote