Hi Gents,

Stuck again I'm afraid:

For some reason I am getting an e-stop condition (whether the e-stop is connected to the BoB or not) when I turn my spindle on. Its consistent as well i.e. happens every time.

Can someone confirm my earthing setup:

I have VFD earthed to mains via its own earth connector and also have the shielding for the VFD to Spindle cable earthed to that point (only at that end i.e. shield is not connected to the spindle or machine, only the VFD earth point).

All other control cable shields are earthed back to the star point in my control box (again no connections for the shield on the machine).

I have good mains earth (tested with a socket tester).

Only thing I am not sure about is the spindle's earth (pin 4) is not connected to anything and I haven't connected a lead to it back to anywhere. Also I have earthed the machine via a seperate cable back to the control box star point and have good continuity all the way from the spindle casing down to the frame bed (my machine is nearly all metal).

Oh and I have the Z axis CY cable on the other side of the Z axis plate from the VFD/Spindle cable (about as much separation as I can get.

Any ideas?