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Introduction
The Allen Bradley 1794-IE8 FLEX I/O Analog Input Module is a compact and reliable 8-channel analog signal acquisition module designed for distributed industrial automation systems. As part of the FLEX I/O family, it provides accurate measurement of voltage and current signals from field instruments, enabling seamless integration into PLC-based control architectures.
Engineered for flexibility and stable performance, the 1794-IE8 is widely used in process control, machine automation, and remote I/O applications where dependable analog data collection is essential for operational precision and system efficiency.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Allen-Bradley (Rockwell Automation) |
| Model Number | 1794-IE8 |
| Module Type | FLEX I/O Analog Input Module |
| Input Channels | 8 Single-Ended Inputs |
| Input Signal Types | Voltage / Current (configurable per channel) |
| Voltage Range | 0–10V DC, ±10V DC |
| Current Range | 0–20 mA / 4–20 mA |
| Resolution | 12-bit (unipolar), 11-bit + sign (bipolar) |
| Conversion Method | Successive approximation |
| Conversion Time | ~256 µs (all channels) |
| Input Impedance | ~100 kΩ (voltage mode) |
| Accuracy | ~0.2% full scale @ 25°C |
| Backplane Current | ~20 mA @ 5V DC |
| Power Dissipation | ~3.0 W max |
| Isolation | User power to system (no channel-to-channel isolation) |
| Communication | Via FLEX I/O adapter (EtherNet/IP, ControlNet, etc.) |
| Terminal Base | 1794-TB2 / TB3 / TB3S compatible |
