Thread: VFD for 3 Phase Mini 30

Hi
This is my first post, so hi to everyone. I just bought a SCM L'Invincible Mini 30 combination machine. It is 3 phase 760/440 volt and I only have single phase power. My intention was either : Get 3 phase on at home (too expensive), Get a rotary converter (noisy & inconvenient), put in single phase motors. The last option was my preference but the spindle moulder is 2 speed and it seems 2 speed single phase motors are not available. So my current idea is put in new 240V 3 phase motors and use a VFD to get the speed options on the spindle moulder. It seems a VFD is usually connected to just one motor although from my many phone conversations it seems I may be able to do what I want. Apparently I would need some kind of isolation switch to do that. I could put single phase motor for one and just use VFD on spindle moulder motor but that seems a tad messy (plus 3 phase motors are cheaper).

Can anyone tell me some general info about how a VFD is wired up. Apparently the VFD will not be mounted on the machine. I am unclear if I can use the existing stop start controls on the machine, or have to operate everything from the VFD. I was told DON'T SWITCH LOAD SIDE OF VFD or I will blow it up. Not 100% sure what that means (I guess don't switch machines on/off while VFD powering them?) Just after some ideas about the best/cheapest way to set this up.