Allen-Bradley 1771-ID PLC-5 Isolated Input Module delivers six isolated digital inputs for PLC-5 systems, designed to accept 120V AC or DC field signals. Each input channel is isolated from the others and from the backplane, with up to 1500V AC RMS of isolation, and the module supports an input range of 92–138V AC/DC at 47–63 Hz with a nominal current of 8 mA per channel at 120V. The module draws 74 mA from the backplane and uses wiring arm 1771-WD; it is part of the PLC-5 1771 I/O family, typically shipped as Series A, Rev A (1771-ID/A).
