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The 1769-IR6 (Part Number: 1769-IR6) is a high-performance analog expansion module designed for the Allen-Bradley CompactLogix and MicroLogix 1500 controller families. This module specializes in temperature measurement and resistive sensing, offering six high-resolution input channels. It is engineered to interface directly with Resistance Temperature Detectors (RTDs) and various resistive devices, converting low-level analog signals into digital data for the PLC processor.
Each channel on the 1769-IR6 is individually configurable to ensure maximum precision across multiple industrial sensing applications. The module features advanced diagnostic capabilities, including detection for open-circuits, short-circuits, and out-of-range conditions, which significantly reduces troubleshooting time. With a robust isolation rating and high vibration resistance, it is built to maintain signal integrity in electrically noisy and demanding factory environments.
| Specification | Details |
|---|---|
| Power Dissipation | 1.5 Watts |
| Common Mode Voltage | ±10V DC maximum |
| Isolation Voltage | 720V DC for 60 seconds (Channel-to-Bus) |
| Input Impedance | >10 MΩ |
| Cable Impedance | 25 Ω maximum |
| Terminal Interface | Removable Terminal Block (RTB) |
| Physical Dimensions | 35 mm x 87 mm x 118 mm |
| Weight | 0.45 kg |
The 1769-IR6 is frequently utilized in precision thermal management systems, such as:
Industrial ovens
Plastic injection molding machines
Chemical reactors
Its ability to read direct resistance makes it also suitable for:
Potentiometer-based position feedback
Specialized resistive load monitoring
Does the 1769-IR6 support 2-wire, 3-wire, or 4-wire RTD configurations?
The 1769-IR6 supports 2-wire and 3-wire RTD sensors. For 3-wire configurations, the module provides lead-wire compensation to ensure that the resistance of the lead wires does not affect the temperature reading accuracy.
Can I mix different RTD types on the same module?
Yes, each of the six channels can be programmed independently for a specific RTD type or resistance range within the software configuration (RSLogix 500 or Studio 5000).