69Technical Data PR202-50-502-22Effective June 2017CF2000 SystemEATON www.eaton.com3 Way Input/Output unit CIO351, CIO351S, CIO351SSTInstall the device as follows1. Separate the two halves of the unit2. Drill out (or knock out) the required cable entries in the surface mounting back-box3. Fit the back-box in position and pass the wires into it4. Connect the unit according to the diagram belowNote: No addressing of the interface is required See control panel operation for detailsFigure 48 shows the standard connectionsFigure 48. Wiring for 3 way Input/Output unit CIO351Notes1. Only connect cable screen to its adjacent earth terminal2. The end of line resistor must always be fitted, even if the inputs are unused3. Monitored inputs can detect open or short circuit faults4. Output relays are volt-free contacts and are not monitored

Eaton CF2000 Installation Manual