Re: Looking for input/help wiring up my lathe
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: cal50</div><div class="ubbcode-body">I converted my 3 phase lathe (Logan) using a VFD or variable frequency drive. You can find them cheap on ebay. If your only using one 3 phase motor a VFD works great. A VFD is used one per application or motor so if you have multiple machine a roto phase would be a cheaper move. A VFD is matched to your motor HP and if it's small they are inexpensive. If you need a big HP rating the cost goes up.
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I have looked into a VFD, for a lathe, it is considered Hard start. Therefore, for my 3 HP lathe, they recommend a 7.5 HP rated VFD. Those are not cheap. I already have the stuff to build my rotary phase converter. Other than balancing the lines, I really can't see any reason why I would spend the money on a VFD instead of just building the rotary that I already have the motor and static phase converter for?
Sorry to get frustrated, but I am really interested in help with the wiring plan I put up in my original post, and am really not interested in spending more money to get a VFD which while it may be easier, won't do anything that my rotary won't. Not to mention, if you look into them, they are cost prohibitive when you start looking at what I actually need VFD wise.
Thanks,
Dave