Allen-Bradley 1794-IEB3

Allen-Bradley 1794-IEB3

Model Allen-Bradley 1794-IEB3

Product Overview

The Allen-Bradley 1794-IEB3 is an analog input module within the FLEX I/O system, a modular distributed I/O platform from Rockwell Automation designed for industrial automation applications. FLEX I/O systems provide flexible, low-cost modular I/O that delivers the functionality of larger rack-based systems in a compact footprint. The Allen-Bradley 1794-IEB3 functions as an interface between field analog signals and a host controller, converting electrical signals from sensors and transmitters into digital data for processing.

The Allen-Bradley 1794-IEB3 belongs to the Bulletin 1794 FLEX I/O family, which supports a wide range of modules including digital, analog, HART analog, and specialty I/O. Each FLEX I/O system consists of at least one adapter, a terminal base, and an I/O module. The Allen-Bradley 1794-IEB3 requires a compatible terminal base unit for mounting and field wiring connections. FLEX I/O modules are designed for Removal and Insertion Under Power (RIUP), allowing module replacement without disturbing field wiring or system power.

Analog input modules in the 1794 series typically feature individually configurable channels, selectable input filters, single-ended or differential inputs, on-board scaling, and internal calibration. The Allen-Bradley 1794-IEB3 is positioned as an economic solution for analog signal acquisition in distributed control architectures, suitable for process monitoring and control applications where flexible, space-efficient I/O is required.

Request Price
Contact Sales
Need price or availability? Contact our sales team.
WhatsApp Start WhatsApp Chat Chat Now
WhatsApp QR Code
Scan to WhatsApp

Description

 

Technical Specifications

Parameter Name Parameter Value
Product Model Allen-Bradley 1794-IEB3
Manufacturer Allen-Bradley (Rockwell Automation)
Product Type FLEX I/O Analog Input Module
Series FLEX I/O 1794
Number of Inputs To be confirmed (inferred 8 channels based on similar models)
Input Signal Type Current/Voltage (configurable: 4-20mA, 0-20mA, ±10V, 0-10V)
Resolution 12 bits (based on comparable 1794-IE8 specifications)
Conversion Type Successive Approximation
Bus Current Approximately 20 mA @ 5V DC
External DC Supply 24V DC nominal (19.2…31.2V DC range)
Operating Temperature 0…55°C (32…131°F) for standard modules
Compatible Terminal Base 1794-TB2, 1794-TB3, 1794-TB3S, and similar
Mounting DIN rail or panel mount

 

Main Features and Advantages

FlexBus Backplane Integration: The Allen-Bradley 1794-IEB3 communicates through the FLEX I/O system’s integrated FlexBus backplane, eliminating the need for external wiring between modules and the adapter. This design simplifies system wiring, reduces installation costs, and improves noise immunity. A single adapter can support up to eight terminal bases, allowing up to 64 analog input channels per adapter.

Configurable Input Ranges: Analog modules in the FLEX I/O family feature user-configurable input ranges. The Allen-Bradley 1794-IEB3 likely supports both current and voltage signal types, enabling the same module to accommodate different field instruments and sensors. This flexibility reduces spare parts inventory and simplifies system design. Configuration is performed through the controller programming software.

Removal and Insertion Under Power (RIUP): The Allen-Bradley 1794-IEB3 supports RIUP, allowing module replacement while the system remains operational. Field-side power must be removed before module removal or insertion, but backplane power and field wiring remain undisturbed. This capability minimizes downtime and simplifies maintenance procedures.

Modular Architecture: FLEX I/O systems allow independent selection of I/O modules, termination styles, and network interfaces. The Allen-Bradley 1794-IEB3 can be mixed and matched with digital and specialty modules on the same system, providing configuration flexibility. Adjustable keyswitches on terminal bases prevent incorrect module insertion.