Hello
Sorry if this is in an inappropriate place, feel free to move it.
I am fairly new to CNC and have just bought and assembled a machine from Bulkman3d, it took some time as i have recently had a stroke and have poor memory and a strength\fatigue issue.
That said, i have been "commissioning" the build and have come across an unusual issue that i would like some advice on. The spindle runs on a VFD, with the system using a xPro V5. I just set up the limits and they are working fine but have noticed that when i start the spindle, the xPro reports that the Z axis has tripped the limit. This is not the case and the two are not physically connected yet either !
The two are mounted on a board, along with a Power supply ( for xPro) and an E-Stop. They are, i feel, sufficiently distanced to not cause interference between each other and not currently physically connected.
Anyone any ideas how it is getting tripped please ?

FYI
xPro V5 grbl controller with 4 motors and 3 limit switches ( 1 per axis)
Huanyang VFD 220v connected to 2.2Kw Water cooled spindle

i can provide more info if required ( if i know it)

thanks in advance