1762-IR4 | Allen-Bradley MicroLogix RTD/Resistance Input Module 4-Channel Expansion

Allen-Bradley · HMIs & Displays

Description  The Allen-Bradley 1762-IR4 is a four-channel RTD and resistance input module designed for MicroLogix 1100, 1200, and 1400 controllers. It supports multiple RTD types and resistance ranges, providing precise temperature and resistance measurements using a Delta-Sigma conversion method for stable, noise-resistant input processing.     Technical Specifications Condition New/Never Used Surplus Brand Allen-Bradley Category Drives Part Number 1762-IR4 Subcategory RTD / Resistance Input Module Series MicroLogix Number of Inputs 4 Channels Compatible Controllers MicroLogix 1100, 1200, 1400 Compatible RTD Types Pt385, Pt3916, Nickel, Copper, Nickel-Iron (2/3/4-wire) Resistance Ranges 0–150 Ω, 0–500 Ω, 0–1000 Ω, 0–3000 Ω Conversion Method Delta-Sigma Converter Type Sigma-Delta Input Filters 10 Hz, 50 Hz, 60 Hz, 250 Hz, 500 Hz, 1 kHz Data Formats Raw, Engineering x1, Engineering x10, PID-Scaled, Percent Heat Dissipation 1.5 W Module Power Source Via 1762 Backplane (5 VDC / 24 VDC) Installation Method DIN Rail or Panel Mount Dimensions 90 mm × 87 mm × 40 mm Diagnostics Single Status/Power LED Wiring Compatibility 2-, 3-, and 4-wire RTDs; 2- or 3-wire resistance devices     Information About 1762-IR4 The 1762-IR4 is part of the MicroLogix expansion family, offering dedicated RTD and resistance input capability for applications requiring accurate temperature or position monitoring. Its design supports a wide range of platinum, nickel, and copper RTDs in 2-wire, 3-wire, or 4-wire configurations, as well as multiple resistance ranges for non-temperature sensing devices. The module integrates seamlessly with the MicroLogix backplane, receiving both power and communication through the 1762 expansion bus for simplified installation. Typical usage includes temperature monitoring, machine positioning, material processing, and any application requiring stable resistance-based input signals. Key Features: 4-channel RTD/resistance inputs: Supports temperature and resistance measurement applications. Broad RTD compatibility: Accepts platinum, nickel, and copper RTDs in 2-, 3-, or 4-wire formats. Multiple resistance ranges: Handles 0–150 Ω, 0–500 Ω, 0–1000 Ω, and 0–3000 Ω signals. Delta-Sigma conversion: Provides high-accuracy, noise-filtered analog measurement. Configurable data formats: Outputs raw, engineering units, scaled-for-PID, or percent values. Supports selectable input filters: 10 Hz to 1 kHz for tuning response vs. noise immunity. Backplane-powered design: Draws 5 V and 24 V power directly from the MicroLogix expansion bus. Built-in diagnostics: Includes a single LED for module and channel status indication. The 1762-IR4 delivers the reliability and precision required for temperature and resistance measurement in industrial control applications.

Brand: Allen-Bradley · Category: HMIs & Displays

Key features

• 4-channel RTD/resistance inputs: Supports temperature and resistance measurement applications.
• Broad RTD compatibility: Accepts platinum, nickel, and copper RTDs in 2-, 3-, or 4-wire formats.
• Multiple resistance ranges: Handles 0–150 Ω, 0–500 Ω, 0–1000 Ω, and 0–3000 Ω signals.
• Delta-Sigma conversion: Provides high-accuracy, noise-filtered analog measurement.
• Configurable data formats: Outputs raw, engineering units, scaled-for-PID, or percent values.
• Supports selectable input filters: 10 Hz to 1 kHz for tuning response vs. noise immunity.
• Backplane-powered design: Draws 5 V and 24 V power directly from the MicroLogix expansion bus.
• Built-in diagnostics: Includes a single LED for module and channel status indication.

Specifications

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