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1756-IR6I

Allen-Bradley 1756-IR6I ControlLogix 6-Point Isolated RTD Input Module

In stock (16 units), ready to be shipped

  • Manufacturer: Allen-Bradley

  • Product No.: 1756-IR6I

  • Product Type: Analog RTD Module

  • Product Origin: USA

  • Payment:T/T, Western Union

  • Weight: 320g

  • Shipping port: Xiamen

  • Warranty: 12 months

30-Day Return Policy · 12-Month Warranty
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  • 24/7 Support
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Description

Allen-Bradley 1756-IR6I ControlLogix RTD Input Module

The Allen-Bradley 1756-IR6I is a high-precision, temperature-measuring analog input module for the ControlLogix platform. Featuring six individually isolated channels and a 16-bit resolution architecture, this lightweight 0.32 kg module interfaces with 3-wire and 4-wire RTD sensors to deliver accurate thermal tracking in demanding process environments.

Key Advantages

  • Channel-to-Channel Isolation: Six fully independent isolated sensor circuits eliminate ground loop risks and prevent cross-channel signal corruption.
  • Dual Processing Modes: Supports baseline integer conversion as well as advanced 32-bit floating-point execution with temperature linearization and process/rate alarming.
  • Intelligent Diagnostics: Embedded with under-range/over-range detection, programmable digital notch filters, and real-time wire-off loop sensing.

Technical Specifications

Input Points 6 Individually Isolated Channels (20-pin faceplate)
Supported RTD Types Platinum (100, 200, 500, 1000 Ω; α=385/3916), Nickel (100, 120, 200, 500 Ω; α=672/618), Copper (10 Ω)
Analog Resolution 16 bits (7.7 mΩ/bit at 487 Ω max, 15 mΩ/bit at 1000 Ω max, 30 mΩ/bit at 2000 Ω max, 60 mΩ/bit at 4020 Ω max)
Module Scan Speeds 10 ms min (Integer Mode) / 25 ms min (Floating Point Ohms) / 50 ms min (Floating Point Temp)
Backplane Current Draw 250 mA at 5.1 VDC / 125 mA at 24 VDC (Total Power Dissipation: 4.3 Watts max)
Operating Scope & Weight 0°C to 60°C (32°F to 140°F) / Net Module Weight: Approx. 0.32 kg

Quick Installation

  • Chassis Placement: Align and firmly slide the module into any available local or remote I/O slot within the ControlLogix chassis.
  • Terminal Block Setup: Wire the sensors using a compatible 1756-TBNH or 1756-TBSH 20-pin Removable Terminal Block (RTB).
  • Multicast Configuration: Establish the proper Requested Packet Interval (RPI) and Real-Time Sampling (RTS) parameters to enable deterministic data multicasting.

Technical FAQs

Q1: What are the differences between Integer and Floating-Point data formats?
A1: Integer mode limits scaling data but processes raw readings much faster. Floating-Point mode utilizes the full internal processing library to support temperature linearization, rate alarms, and engineering unit scaling.

Q2: How does the module handle inherent line noise or minor resistance variances?
A2: A built-in digital notch filter minimizes plant electrical field noise, while an integrated 10-ohm copper offset feature compensates for small layout errors on sensitive copper RTD loops.

Q3: How does the wire-off detection feature operate?
A3: The wire-off diagnostic checks loop completeness continuously. If a connection on the terminal block is loosened or a field wire breaks, a system fault flag activates instantly to avoid inaccurate control loops.

Product Resources

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🏷️ Tags: Analog RTD Module

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  • Follow manufacturer instructions and best practices during installation.

In-stock items are typically dispatched the same business day. For products not currently in stock, dispatch times may vary based on availability. International shipping is available, and shipping costs are calculated according to destination, weight, and carrier selection.

Returns are accepted within 30 days of receipt, provided items are unused and in original condition. Return shipping costs are the responsibility of the customer. Please contact us before returning any item to receive return authorization.

For more details, please review our Shipping & Return Policy.

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