Hi, no info came with it, ask saller still watting.

Well my main panel have the neutral and ground in common.
I use a 30amp breaker 2 phase to fee the cnc controller.
Attach images.
When I turn the breaker at controller the contact won't engage, I manually engage, the vfd power up and the inverter at bottom not power up , I read 17vac at input ???

Any advice.. thank you.