I recently tried the hy inverter....it didn't last long. My recommendation is that if you are using it to make money...get a better one. I do alot of 3d milling of mdf for boat and custom car applications and I think the 3d roughing programs are a little much for that drive. I have recently moved on to a hitachi 2.2kw drive with the nice chinese spindle from ugra cnc and its seems much better. I am keeping the chinese spindle as a spare but I won't buy another hy. That's my 2 cents worth on that.

I have questions about the hitachi drive. There seems to be many optional safety features. I have the drive running the spindle and ran the bearings in today. Does anyone have any advice on what features of the drive should I use to optimize it for a cnc mill/router?? I am assuming that the drive automatically works well for safety and running without going into all that but why not optimize?? The drive also has self tuning that I haven't tried yet. I'm using the drive with analog input. Any suggestions or general methods of using this or any vfd are appreciated. I am using a line reactor on the input side. I actually just smoked a hitachi drive also and just tuned in the replacement but the factory thinks the first drive was defective.....we'll see after they inspect it. I just want to do everything I can to make the system as reliable as possible....the roughing paths using longer tools to reach into cavities is definitely are the hardest on the machine and run for hours on end sometimes. Any suggestions?? Thank you.