What the FR-A8AY does
The Mitsubishi FR-A8AY is an option card designed for the A/F800 series of drives. It gives you digital outputs and expanded analog outputs, so you can add I/O without swapping the drive itself. Out here in the grease, that means one less panel-box to wire if you need a couple extra signals. It bolts into the option slot on the drive – no ribbon cables, no separate power feed.
