Hello.

This is with reference my build http://www.mycncuk.com/forums/gantry...tiddy-cnc.html

I have slowly configured the components and tested at each step along the way. I have the e/stop circuitry killing the main PSU's (Thanks AudioAndy and Dean), the smoothstepper and BOB working, home switches trigger the Mach3 Diagnostics page and all of the AM882's have driven thier motors. So far so good..

This morning as I was jogging the machine around (thankfully slowly) I noticed it start to rack on the X Axis, only a little, maybe 2-4mm then I killed the power & released the mechanical stress by uncoupling one of the X Axis connecting plate and looked closer.

I couldnt reproduce the fault until a few mins ago when I noticed that one of the 882's went into an error state and stopped the motor with 4 blinks which per the manual is 'phase error protection' (short/break).

So my plan is to replace the cabling between the 882 and the control box socket, I'm going to pay particular attention to the soldering and shrink wrap on the connector. The reason I suspect this the most is that I noticed that as I opened the door of the electrical cabinet a little wider the X Axis motor in question made a little noise like a non continous jog so I assumed the mechanical action of the wires moving are causing the short/break within the cabinet.

My question really is, if this is intermittent how will I know when I've fixed it and what am I missing? oh.. and yes I'm now a fan of Wobblycogs alarm circuit and will look to impliment that sharpish! Thanks for any advice. Tony.