Product Overview
Temperature and resistance signals drift, fail, and take production down when the input module cannot keep up. The Allen-Bradley 1769-IR6 is a Compact I/O RTD/resistance input module built to keep those readings stable. It carries six individually configured input channels in a single slot, so one module covers multiple measurement points without expanding the rack.
The 1769-IR6 accepts Resistance Temperature Detectors and direct resistance signals. A Sigma Delta converter handles the analog-to-digital work, and each channel reports open-circuit, short-circuit, over-range, and under-range conditions. That diagnostic visibility matters on a plant floor where a bad sensor can quietly corrupt a temperature loop.
Technical Specifications
| Specification | Value |
|---|---|
| Product Type | RTD / Resistance Input Module |
| Product Family | Compact I/O |
| No. of Inputs | 6 |
| Converter Type | Sigma Delta |
| Current draw @ 5.1V | 100 mA |
| Heat dissipation, max | 1.5W |
| Nonlinearity | ±0.05% |
| Open circuit detection time | 6 ms…303 s |
| Resistance signals | 150 Ω, 500 Ω, 1000 Ω, 3000 Ω |
| Compatible Controllers | MicroLogix 1500; CompactLogix |
Six channels in one slot means fewer modules, less wiring, and a smaller footprint in the chassis. The 100 mA draw at 5.1V keeps backplane loading predictable. A maximum heat dissipation of 1.5W supports dense panel layouts without forcing extra ventilation.
Where the 1769-IR6 Fits
RTD inputs serve temperature-critical loops across oil, gas, and process industries. The 1769-IR6 handles six of them at once, which suits skids and remote racks where channel count per slot matters. Direct resistance signals also let the module track displacement or movement, so clamping, rotation, and similar factory automation tasks can share the same hardware.
Because each channel detects open and short circuits independently, a failed sensor shows up immediately rather than surfacing as a slow process deviation. Maintenance teams can wire module status into controller diagnostics and surface it on an HMI or SCADA screen. That turns a hidden fault into a visible one.
Installation and Service Notes
The 1769-IR6 works with MicroLogix 1500 and CompactLogix controllers, and it fits a 1769 CompactLogix chassis. It supports 2-, 3-, and 4-wire RTD configurations. When using a 4-wire RTD, one compensation wire is not terminated at the terminal.
Signal filters are individually configurable per channel. Open circuit detection time ranges from 6 ms to 303 s, giving you control over how quickly a fault is flagged. For maintenance engineers, the practical takeaway is simple: verify wiring against the RTD type in use, confirm filter settings match the process speed, and keep the terminal block accessible for service.
Sourcing the 1769-IR6
Downtime does not wait for a purchase order cycle. Oil AutoTech supplies industrial automation spares for oil, gas, and process applications, with fast dispatch and worldwide delivery. If you are replacing a failed module or stocking a spare, confirm the exact configuration before ordering.
Contact Oil AutoTech today for pricing and availability.
