The Allen Bradley 1794-IF4I is a FLEX I/O isolated analog input module engineered for high-accuracy industrial signal monitoring in distributed automation systems. Featuring 4 fully isolated analog input channels, this module is designed to handle both voltage and current signals while minimizing electrical interference and improving overall signal integrity.
Widely deployed in process automation, OEM machinery, utilities, and instrumentation-heavy applications, the 1794-IF4I delivers dependable analog data acquisition in environments where stability, precision, and noise immunity are critical to operational performance.
Technical Specifications
| Specification | Details |
|---|---|
| Manufacturer | Allen Bradley (Rockwell Automation) |
| Model Number | 1794-IF4I |
| Product Family | FLEX I/O |
| Module Type | Isolated Analog Input Module |
| Analog Inputs | 4 isolated input channels |
| Signal Types | 4–20 mA, 0–20 mA, ±20 mA, ±10V, 0–10V, ±5V, 0–5V |
| Resolution | 16-bit unipolar, 15-bit bipolar |
| Conversion Type | Sigma-Delta conversion |
| Input Conversion Rate | 2.5 / 5.0 / 7.5 ms on all channels |
| Input Configuration | Differential isolated inputs |
| Accuracy | Approx. 0.1% full scale at 25°C |
| FlexBus Current Draw | Approx. 50 mA @ 5V DC |
| External DC Supply | 24V DC nominal |
| Operating Voltage Range | 19.2–31.2V DC |
| Isolation Voltage | 120V continuous isolation |
| Power Dissipation | Approx. 2W maximum |
| Thermal Dissipation | Approx. 6.8 BTU/hr |
| Diagnostics | Power and module status indicators |
| Compatible Terminal Bases | 1794-TB2, TB3, TB3S, TB3T, TB3TS, TBN |
| Mounting Type | DIN rail / panel mounting |
| Operating Temperature | -20°C to +55°C |
| Protection Rating | IP20 |
Technical data verified from multiple industrial references and Rockwell lifecycle documentation.
Physical Dimensions & Weight (L × W × H Combined)
| Parameter | Specification |
|---|---|
| Dimensions (L × W × H) | 99 × 63 × 53 mm |
| Weight | Approx. 0.16 kg |
Recommended Related Models
The 1794-IF4I is commonly integrated with other FLEX I/O analog and communication modules to create scalable distributed control systems.
| Related Model | Description |
|---|---|
| 1794-IE8 | 8-point analog input module |
| 1794-IE12 | 12-point analog input module |
| 1794-OE4 | Analog output module |
| 1794-IF2XOF2I | Isolated analog combo module |
| 1794-IF2XOF2IXT | Extreme temperature isolated analog module |
| 1794-IB16 | Digital input module |
| 1794-OB16 | Digital output module |
| 1794-AENT | EtherNet/IP adapter |
| 1794-AENTR | Redundant EtherNet/IP adapter |
| 1794-ACN15 | ControlNet adapter |
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