Allen-Bradley 1756-IR6I ControlLogix Isolated RTD Input Module

Status: In Stock

Description

The 1756-IR6I​ is a ControlLogix series 6-channel isolated RTD input module manufactured by Allen-Bradley (Rockwell Automation). Designed for high-precision temperature measurement in demanding industrial environments, it supports a wide range of RTD types including Platinum, Nickel, and Copper sensors with 3-wire or 4-wire configurations. The module delivers 16-bit resolution and features individual channel isolation to ensure signal integrity and system reliability in noisy electrical conditions.

Allen-Bradley 1756-IR6I ControlLogix Isolated RTD Input Module插图

 

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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