I recently have had a problem with my spindle during spindle warmup. It made an awful screeching sound before stoping only a minute into warmup. The VFD read an error oL-2 which has several possibilities. I starting scrolling through the settings on the VFD to see if anything could be off, but since the VFD came programed from ShopBot I have no idea what the settings should be if not correct. I have a Yaskawa V1000 VFD and HSD AT/MT1073-070 spindle.

I also no longer have control of my spindle from the computer or 3 button pendant even though I have the ability to switch between local and remote access on the VFD.