Description
Technical Specifications
| Parameter Name | Parameter Value |
|---|---|
| Product Model | 1794-IEB2 |
| Manufacturer | Allen-Bradley (Rockwell Automation) |
| Product Type | 2-Channel Analog Voltage Input Module |
| Number of Inputs | 2 single-ended, non-isolated |
| Supported Input Ranges | ±10 VDC, 0–10 VDC |
| Input Impedance | 200 kΩ typical |
| Resolution | 12-bit plus sign (bipolar), 12-bit (unipolar) |
| Module Location | 1794-TB2 or 1794-TB3 terminal base |
| FlexBus Current | 20 mA typical at 5V DC |
| Field Power | 10.5–31.2V DC |
| Isolation | 850V DC tested for 1 second (user/system side) |
| Power Dissipation | 3 W maximum at 31.2V DC |
| Operating Temperature | -20 to 55 °C |
| Storage Temperature | -40 to 85 °C |
| Enclosure Rating | Open style, for installation in enclosure |
| Indicators | 1 green Power/Status indicator |
Main Features and Advantages
The 1794-IEB2 delivers precise voltage signal acquisition with two independently configurable input channels. Each channel accepts standard industrial voltage ranges, including ±10VDC and 0–10VDC, allowing the module to interface directly with sensors, transmitters, and other analog devices without the need for external signal converters.
Compact and modular by design, the Allen-Bradley 1794-IEB2 occupies minimal panel space while integrating seamlessly into a distributed I/O system. Its snap-on installation onto a dedicated terminal base simplifies assembly and replacement, helping to reduce commissioning time and minimize downtime during maintenance.
Signal quality is supported by internal calibration and on-board scaling, enabling more accurate process measurement and reducing the need for complex controller-side conversion logic. The module’s high input impedance helps prevent loading of sensitive source devices, preserving signal integrity in demanding control loops.
The 1794-IEB2 is built for operational continuity. It supports Removal and Insertion Under Power when used in a properly designed system, allowing module replacement without powering down the entire I/O segment. This capability is particularly valuable in continuous-process industries where unplanned downtime carries significant cost.
Isolation between the user and system sides enhances protection against electrical noise and transient conditions commonly encountered in industrial environments. Combined with robust EMC performance and a wide operating temperature range, the Allen-Bradley 1794-IEB2 offers dependable performance across a broad range of control applications.
