Paul, the post Richard refers to is where I went to get the parameters for VFD changeout a couple of year ago. When I follow that link now, the embedded pdf wouldn't open. However, I still had it saved so I've attached it should you need it. Note that the old thread was focused on reprogramming the VFD to allow the lathe to run at slower speeds. I wasn't interested in that ... just needed the factory settings which the writer (one Scott Crumpton, I think) also includes. I did not have the writer's computer skills and did not try to program the new drive with a computer. I simply stepped through the menu on the VFD and plugged in the settings. It's not rocket science.