
Application Scenarios
In a large chemical processing plant, maintaining precise temperature control across multiple reactor vessels is critical for product quality and safety. A typical system might monitor dozens of points, from reactor cores to cooling jackets. Before upgrading, engineers faced challenges with signal noise causing erratic readings and costly false alarms. By integrating the 1756-IR6I module into their ControlLogix chassis, they achieved stable, high-fidelity temperature acquisition. The module’s individual channel isolation and built-in noise rejection filters eliminated cross-talk and EMI interference, while its wire-off detection feature provided immediate alerts for sensor failures, preventing batch spoilage and enabling predictive maintenance.
Parameter
| Main Parameters | Value/Description |
|---|---|
| Product Model | 1756-IR6I |
| Manufacturer | Rockwell Automation (Allen-Bradley) |
| Product Category | Analog RTD Input Module |
| Input Channels | 6 (Individually Isolated) |
| Supported RTD Types | Pt100/200/500/1000 (α=385, 3916), Ni120, Cu10Ω |
| Resolution | 16-bit |
| Input Ranges | 1–487 Ω, 2–1000 Ω, 4–2000 Ω, 8–4020 Ω |
| Isolation Voltage | 250V AC/DC (Channel-to-Channel & to Backplane) |
| Backplane Current | 250 mA @ 5.1V, 125 mA @ 24V |
| Power Dissipation | 4.3 W (Max) |
| Operating Temperature | 0 to 60 °C (32 to 140 °F) |
| Data Format | Integer, IEEE 32-bit Floating Point |
| Removable Terminal Block | 1756-TBNH (Screw), 1756-TBSH (Spring) |







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