Oh and one last thing the VFD has three input terminals for speed control (frequency) input. 0-10V, 0-5V, and I think 0-200ma I think. The manual is pretty clear that those are all speed input ports.

It is not a 10v input pin if that was confusing. So from what I can tell the relay switching the Forward pin is the enable and one of the speed input is direction and frequency in one. I'll try to figure out how to hook up reverse later.

Or I have this completely wrong. I'm a pretty good hook up guy but circuit design and reverse engineering is not my thing. I'm a mechanical guy mostly.