Originally Posted by
Tophness
Nearly finished upgrading my 6040Z with 12V PSU and Parallel BOB (TX14692) to 24V and USB BOB (BSMCEO4U-PP), just not sure what wires from the VFD to connect the NO/COM/NC side of the relay.
Do VFD COM/FWD pins normally take 24V control signals? And is the relay supposed to short the ACM/Common to NO/FWD?
Something about this doesn't seem right.
I feel like it should be the +10V, but that's used for analog speed control right, so surely it shouldn't go through the relay?
(which, btw, do you always connect +10V from the VFD to the BOB? Or only if 10V rails aren't already provided by the BOB?)
I originally thought AVI and ACM were the analog signals, but there's no ACM on the VFD, so now I'm confused. Nothing else I've read so far has made it clear or actually shown a schematic for the relay to a VFD like this one.