esab ultrarex retro fit plasma / flame cutter

The voltage varies dependant on how close an object is to the sensing ring on the torch Also I'd there any chance anybody would recognise these drives having a hard time finding the enable for them

forgot the photo image missing http://linuxcnc.org/media/kunena/attachments/legacy/images/photo.JPG

First thing I would do is eliminate as many possible wires as you can. Then try and trace back the ones you have left to see if you can discover what they do. Also the enable might be "on" and readable with a meter when jogging slow where the velocity input voltage would vary with speed.

John

Hi John

Yeah that controls given up entirely now so no jogging or anything now I did find the enable to be as I remember 10 volt I just carnt think where it was

From pin 1 they are as follows

0 volt
33 volt (servo power)
10+\-
Unknown
Unknown
Unknown
Pin 7 I think was the enable but there's a minus 13volt there
10+\-
Unknown
Clutch supply 24v dc
Earth

found this in my emails thins pcb had to be repaired conecter x17 and 18 go to the drives

Does the capacitive sensor go to the board in the schematic? (unfortunately that schematic is pretty fuzzy especially signal names)