Hey Robert,
do you know that
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the stock stepper motor cables on both Elite and Original Series are not shielded (not usual on CNC machines in industry), and at same time
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a VFD is a heavy source of EMI so you have to take care…
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of the fact that a VFD is a device intended for installation in a grounded control cabinet (especially since on the Onefinity, the stepper motors cables are not shielded and a VFD is always a heavy source of EMI, which is why you put it into the control cabinet (that acts as faraday cage then))
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to select a suitable spindle power cable and to wire, shield and terminate the spindle cable correctly (for this, see also this important document)
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that your entire CNC setup is properly grounded (see also materials and tools needed for this)?
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