Thank you for reply.

Mostly I understood what you said.
However, there are some parts that do not understand some meanings.

> The switch should be placed in front of the incoming force.
? Actually I am not sure if it is a switch box.
The reason I decided it was a switch box is because I saw the following site.
https://www.soigeneris.com/line-filter-and-switch-box
? Please also refer to the attached image
? Motor driver has arranged Soigeneris STDR-4C of the same maker.

About the filter site image and mine look the same.
But with the top blue switch box, my black box is different.
The blue box on the site has an analog switch on the back.
But the back of my black box is only stuck to the metal box.

I determined that it was a digital relay switch, is it correct?
Should it be in front of the filter, even if it is a digital relay switch?

> The neutral should not be switched only the Power Live wire should be switched
? I do not understand the meaning of sentences well.
Can you tell me a little more?

Furthermore, I am a product designer, so I am not very good at engineering.
I asked the manufacturer many times but there was no reply.
I was really in trouble and asked for help in this forum.

?The out put from the filter should go direct to the VFD Drives input Power R and T terminals and Ground / Earth to the Ground / Earth Terminal
? The three wires of the VFD input power supply were initially connected to S, T, and Earth.
I will try to see if it works if I change to R, T and Earth.

> VFD Drive output power 3 Phase then goes direct to the Spindle and needs to be a 4 wire shielded cable 3 Hot / Live wires and Ground / Earth wire
? I understood.

> If you have 100v 15A I don't think that is going to work very well
? I am in Japan.
I am Japanese and not good at English.
This sentence is also created by relying on google translation.
The motor driver, VFD, and spindle are arranged for 110V.

Would you please reply again?