Comm pcb just connected with header 4 and a Tac switch to turn on device manually. Acs756 pinout is a drawing mistake.Can you show ALL of the wiring including three phase input, DOL starter and motor. Is the comm PCB that connects to header 4 totaly floating or does it connect to anything else ? Also you have made an error in the pin numbering of the ACS756 in your schematic. (I think this is just a drawing error.)
When you say "common ground" do you really mean ground or do you mean neutral ?
456.5 KB Views: 3