Dinky O'Sullivan
Plastic
- Joined
- Mar 10, 2021
- Location
- Ireland
Hello there,
I've managed to acquire a SAG12 graziano three phase lathe. Its 380/220v three phase, 3hp motor; I want to run it on my standard 220v supply. I purchased a VFD (5hp) that outputs 220 three phase. I'm wondering where i need to wire in the VFD? do i need to directly connect it to the motor wiring (after they've been reqired to delta for 220v) or can i simply put it upstream of the whole machine (simply wire it into what was unplugged from the wall in the shop where it was with three phase electricity supply) The lathe does have electromagnetic DC clutches that from reading forums needed a steady supply. I don't want to use the VFD to control motor speed so I would just be using it produce the three phase 220V.
I think i realize from reading other posts that it's generally better to a VFD directly to the motor, but in this case doing that would mean getting a second VFD and figuring out how run the DC clutches on something else (which would involved starting from scratch and figuring out basic electronics that i have no experience with -- is there any reason that the VFD can't just be wired upstream and sned in the threephase as it would have been with a standard three phase supply?
I've managed to acquire a SAG12 graziano three phase lathe. Its 380/220v three phase, 3hp motor; I want to run it on my standard 220v supply. I purchased a VFD (5hp) that outputs 220 three phase. I'm wondering where i need to wire in the VFD? do i need to directly connect it to the motor wiring (after they've been reqired to delta for 220v) or can i simply put it upstream of the whole machine (simply wire it into what was unplugged from the wall in the shop where it was with three phase electricity supply) The lathe does have electromagnetic DC clutches that from reading forums needed a steady supply. I don't want to use the VFD to control motor speed so I would just be using it produce the three phase 220V.
I think i realize from reading other posts that it's generally better to a VFD directly to the motor, but in this case doing that would mean getting a second VFD and figuring out how run the DC clutches on something else (which would involved starting from scratch and figuring out basic electronics that i have no experience with -- is there any reason that the VFD can't just be wired upstream and sned in the threephase as it would have been with a standard three phase supply?