I am in the same boat and think I bought the same vfd combo. I work at a company that makes VFDs so I am familiar with controlling one. I would highly recommend a control circuit for the VFD to eliminate the possibility of it running while you are touching the spindle. Powering the drive off will work but keep in mind that cycling power before the bus is discharged can result in catastrophic failure specially for these cheap drives that do not have a effective discharge circuit. I can share my schematic I have created for my control box I am building if you are interested.