3x3 Pro with Acorn, VFD help

Hello All, I have a 3x3 Pro, with Acorn and Servo motors, I have the machine mostly all set up, my current issue is the Delta VFD that came with the set up, no idea how to turn it on hahaha. I have a FM 30 spindle from CNC Depot. Also have a Acorn board. Any help is much appreciated. Thanks