The Emerson PAC8000 Railbus Isolator is required when using any 2/1 modules in a node. The unit provides
galvanic isolation between those modules interfacing to Intrinsic Safe field wiring on the 2/1 side of the isolator
and those with conventional wiring on the 2/2 side. The unit mounts on its dedicated Railbus Isolator Carrier 8725-CA-RB.
Note: System Power is not passed from one side of the Railbus Isolator to the other, so System Power on the 2/1 side
must be supplied by IS System Power Supplies.
