Allen-Bradley 1769-IF4XOF2 Digital Input Module

The Allen-Bradley 1769-IF4XOF2 is a CompactLogix analog I/O module that combines four differential analog input channels with two analog outputs in a single 1769 I/O slot for streamlined sensor conditioning. Each input channel is isolated from the backplane and uses delta-sigma conversion to deliver 8-bit resolution per channel, with nominal ranges of 0-10 V for voltage and 0-20 mA for current signals, while the outputs provide the same range options and can be configured for either voltage or current drive. The module provides 500 V AC (710 V DC for 1 minute) isolation between the I/O group and the backplane, and a 30 V AC/DC working voltage on the output group with IEC Class 2 reinforced insulation; it also includes open-circuit and short-circuit protection (open circuit up to 15 V, short-circuit up to 40 mA). Power requirements are 5 V DC at about 120 mA or 24 V DC at about 160 mA, and it mounts in standard 1769 Compact I/O racks, pairing with Allen-Bradley CompactLogix controllers and Rockwell software for configuration. In practice, this combo module reduces wiring by pairing sensing and actuation in one module, making it well suited for fast analog data acquisition, process monitoring, and instrumentation tasks within a CompactLogix automation architecture.