Huanyang VFD, how to get Waterpump switching on with UPF/DRV/DCM connectors?

[Kitwn]

I'm still confident that no RCD of any type will offer protection against a shock from the output of a VFD, or indeed any other power supply which has a transformer and/or rectifier between the mains input and the output. I used to teach electrical safety (in a previous millenium!), including how RCDs work, and this was a key point which electrical/electronic engineers and technicians needed to understand, though I admit my own knowledge did not include an in-depth understanding of type A, B, C etc. devices. Having done some reading this morning I believe the differences relate to resistance to spurious tripping or failing to trip due to the presence of harmonics and other interference in the mains current waveforms which are a serious consequence of direct rectification of the mains as used in many switch-mode power supplies.
On a happier note, the 2.2kW water cooled spindle I recently bought from the Hunag Yang Store on Ali Express already has a four pin plug with the case connected to pin 4.

Kit