Intermec IF61 GPIO Terminal Block User's Guide - Page 22

If your system needs more than +12 VDC at 0.5 A, you can connect an external power supply to the +12 V and Ground posts on the power terminal. The external supply will power the external loads, and that power will be available at all +12 V posts on the input and output terminals. Sample System Diagram This illustration shows how to connect a system that uses position detection sensors as inputs and indicator lamps as outputs. All are connected to the power terminal on the terminal block and powered by the reader. Position detection sensor Position detection sensor Inputs Outputs +12 V +Input -Output Ground TB2 TB6 +12 V +Input -Output Ground TB1 TB5 Output #2 indicator lamp Output #1 indicator lamp +12 VDC Sample System Diagram Ground TB9 22 GPIO Terminal Block User's Guide