I have a NEMA34 plug 'n' play electronics system, and am using Mach4. I just bought a Huanyang HY VFD - everything is working great except the 0-10V signal doesn't get to 10V when connected to the VFD.

If I unplug the 0-10V wires from the VFD, the wires measure 0V at minimum speed command, and 10V at max speed - just as I would expect.

However, when I plug it into the VFD, when I command full speed in Mach4 (24000RPM), the terminals only measure about 8V, and the spindle only gets to about 20,400 RPM.

I have contacted AVID support, so I'll see what they say --- has anyone encountered this issue and been able to fix it themselves? Thanks.

I found a similar thread to this issue - it's not clear to me if a new board fixed it or different settings.

https://www.cnczone.com/forums/avid-...mp-play-2.html