My drives just arrived this morning, so i still have work to do before im doing my bench tests. That said i do have a couple of queries.
The pcb silkscreen identifies logic as +24v,gnd, and your spec sheet rates the logic supply as 22v max. Could you clarify which is the actual upper limit for the logic supply, as obviously 24v supplies are far more commonplace then 22v, so if 24v is ok it would make things easier.
Also with regard to cooling, am i right in thinking that with 300w motors i can get away with a ventilated enclosure, without adding external heatsinks to the back of the drives?