DDSCV1.1 3 and 4 axis offline motion controller

**coolice** · 29-01-2018

Originally Posted by AlexDoran

Hi,

Yes i figured it out. You have to wire it as the manual, however the VFD is slightly strange as you have to ground both the ACM & DCM (Analogue & Digital Grounds) to each other. A bizarre occurrence to me, not sure what the Chinese logic is behind it but it works. I can now control the M3/M5 commands and set the speed from the DDCSV1.1.

Alex

Hey Alex.

Just wanted to thank you for this post, as I was struggling to get my Huanyang VFD to run at the speed I am setting from Aspire.
I managed to get it turning on and off at the start and finish of a job all ok, but the speed setting didn't work and it just ran to max.
Connecting the DCM and ACM together via a simple wire fixed it, so thank you.

Ian

**Neale** · 29-01-2018

Not strange logic really (for once!) It makes sense if you think that some controllers have separate power supplies for analogue and digital outputs. For example, this allows you to use the DC output from the VFD to supply the analogue output circuitry in the controller. A lot of cheaper BOBs only have a 5V supply for the digital side of things and need an external supply of 12V or so for the analogue output. And after all, it just needs an extra wire to make it all work with a common ground! The info is on the circuit diagram, although it doesn't leap out at you and I don't think that there is anything specific about it in the HY manual text.