Yes I have 2 off 12v fans with metal mesh filters to blow air into the cabinet from the top with 2 side slots for evacuation of the warm air. All cables for VFD and from the motor drivers are shielded and grounded (once).
I have re-drawn the circuit based on a plan from a thread on here from the user Jazz.
The E-stop is based on this design and does not rely on the bob/software to stop things.
Just not sure about this latching business or what a pilz unit is.
Maybe someone can shed some light on this or on the updated wiring plan that will be uploaded soon.
Cheers,
Ian