FILENAMES: VFD_Mill_1_Overview.jpg VFD_MILL_2_3PhaseConverter.jpg VFD_MILL_3_LocationOf_Display.jpg VFD-MILL_4_FinalControlLayout.jpg DESCRIPTION: These are pictures of a Mitsubishi 5hp Variable Frequency Drive. Posted by Ed Woznicki Ed provided the following description: ==================================================================== These are pictures and description of a Mitsubishi 5hp. Variable Frequency Drive (VFD). It is fed with 240 volt single phase and provides 3 phase power to the 2hp 220 volt motor on my Victor Milling machine. Posted by Ed Woznicki Description details below: April 28, 2001 Accompanying this text file are 4 pictures showing my Mill with a Mitsubishi FR-A220E-3.7K "variable speed drive" which I purchased on ebay direct from Mitsubishi with a year warranty and technical support, for $220 plus $10 for the keypad programmer / co They mentioned that if you are feeding it with single phase (nominal 240 vac), that you should derate it, and thus a 5hp unit should be good for 2 to 3 hp. My motor is rated 6 amps and so I set the overcurrent protection at that level. It should be loaf I chose to control it remotely, although I tested it first via the keypad, but I like the idea of having an OFF switch right at the machine, rather than out of reach. I spent about another $100 on the electrical parts, although I had a friend give me the nice big meter for the frequency display. I mounted these controls in a scavenged box from a dead piece of electronic gear. You don't really need the frequency display, as the Converter Box displays the frequency at the top of the box. I calibrated the meter in percent of full speed at 60 hz. The knob on the potentiometer under the meter, allows me to set the frequency locally on the Mill, as well as select forward or reverse (primarily to accommodate the back gears). I found that it was cheaper, more flexible, and less aggravation to build this setup to generate 3 phase power, than to build the rotary inverter that I was initially going to build. I also feel that if I have more requirements in the future, I can alway The VFD has many more features than I will ever use. It is important to have the Instruction Manual to ensure that you can find the features you need, and so you don't damage anything, also to ensure that you keep the various shields for the control syst Now I can make some chips and really get into trouble. HAPPY MACHINING and thanks to the others who have contributed to this group and helped me learn much about metalworking. Ed Woznicki ewoznick@optonline.net