1794 FLEX I/O

The Allen-Bradley 1794-OE4 is a 4-channel analog output module for the FLEX I/O system.  It provides 4 single-ended, non-isolated outputs with software-selectable voltage (±10V, 0–10V) or current (0–20 mA, 4–20 mA) ranges, offering 12-bit plus sign resolution and 1.024 ms conversion rate for all channels.

The Allen-Bradley 1794-IRT8 is an 8-channel thermocouple, RTD, and millivolt input module for the FLEX I/O system. The module features 14-bit input resolution, wire-off/overrange/underrange detection, and cold-junction compensation via external compensators (1794-CJC2) for thermocouple accuracy.

The Allen-Bradley 1794-OF4I is a 4-channel isolated analog output module for the FLEX I/O system. The module supports Removal and Insertion Under Power (RIUP) for hot-swap maintenance and includes open-wire detection and field power monitoring diagnostics.

The Allen-Bradley 1794-IF8IH is an 8-channel isolated HART analog input module for the FLEX I/O system.  It provides 8 individually isolated current inputs (0–20 mA or 4–20 mA) with 16-bit resolution and HART 5/6/7 pass-through communication, enabling remote configuration, calibration, and diagnostics of HART-enabled transmitters without additional multiplexers.

The Allen-Bradley 1794-OE8H is an 8-channel HART analog output module for the FLEX I/O system, designed for process control applications requiring direct communication with smart field devices. It provides 0–20 mA or 4–20 mA current outputs on each channel while simultaneously enabling HART digital communication over the same two wires, eliminating the need for external HART multiplexers or additional wiring.

The Allen-Bradley 1794-IT8 is an 8-channel thermocouple/millivolt input module for the FLEX I/O system, designed for direct interfacing with a wide variety of thermocouple sensors and low-level millivolt sources. The module includes cold-junction compensation and on-board scaling, simplifying programming and eliminating the need to scale data in the user program.

The Allen Bradley 1794-IE8H is an 8-channel HART-enabled analog input module from the Flex I/O product family. Its core function is to acquire analog signals from field devices—such as pressure, temperature, and flow transmitters—and simultaneously read digital HART (Highway Addressable Remote Transducer) data, enabling both process monitoring and intelligent device diagnostics through a single wiring infrastructure.

The Allen‑Bradley 1797‑OB4D is a 4-channel, non-isolated sourcing digital output module from the FLEX Ex I/O family, specifically engineered for hazardous area applications requiring intrinsic safety . This module eliminates the need for expensive explosion-proof enclosures or external safety barriers by integrating intrinsic safety circuitry directly into the I/O hardware, significantly reducing cabinet space and installation costs . As part of the FLEX Ex system, the 1797‑OB4D is rated for installation in Class I, Zones 0, 1, & 2 and Class I, II, III, Division 1 & 2 hazardous locations . It provides reliable output control for field devices such as solenoids, actuators, and indicator lights in the most demanding industrial environments.

The Allen‑Bradley 1797‑IBN16 is a 16‑channel intrinsically safe (IS) digital input module from the FLEX Ex I/O family, specifically designed for hazardous environments requiring NAMUR‑compatible sensor interface. This module eliminates the need for external isolation barriers by integrating intrinsic safety circuitry directly into the I/O hardware, significantly reducing cabinet space and wiring complexity. As part of the FLEX Ex system, the 1797‑IBN16 is rated for installation in Zone 1, Zone 2, and Zone 22 (Class I, II, III, Division 1, Groups A‑G) hazardous locations, making it ideal for demanding applications in oil & gas, chemical processing, and pharmaceutical facilities.

The Allen‑Bradley 1794‑IE8 is an 8‑channel analog input module from the Bulletin 1794 FLEX™ I/O system, designed for applications requiring reliable and precise analog signal acquisition. It supports single‑ended current and voltage inputs, making it ideal for interfacing with field transmitters, analog instruments, recorders, and process loop controllers . As part of the distributed FLEX I/O architecture, this module works with a communication adapter and terminal base to provide flexible, space‑efficient I/O placement close to field devices.