Allen-Bradley 1756-IF16IHK ControlLogix 16-Channel HART Isolated Analog Input Module

Product Overview

The Allen-Bradley 1756-IF16IHK functions as a high-density, high-performance analog interface within the ControlLogix ecosystem. This module provides 16 individually isolated channels that support both standard 4-20mA signals and advanced HART (Highway Addressable Remote Transducer) digital communication. The "K" suffix designates a conformal coating, protecting the internal circuitry from corrosive industrial atmospheres. We supply this module as 100% Brand New original factory stock, enabling seamless integration of smart field devices into your ControlLogix chassis for enhanced diagnostic visibility.

Technical Specifications

Engineering Advantages

• Channel-to-Channel Isolation: The 1756-IF16IHK provides 250V continuous isolation between every input. This electrical barrier prevents ground loops and stops field-side transients on one loop from affecting adjacent channels, ensuring signal integrity in complex electrical environments.

• Integrated HART Data Access: This module acts as a HART bridge, allowing the ControlLogix controller to extract secondary variables and device health diagnostics directly from smart transmitters. Engineers monitor device status and calibration data in real-time without needing external handheld communicators.

• Extreme Resolution Control: With a selectable resolution of 16 to 21 bits, the module captures minute process fluctuations. This high granularity proves essential for precision flow monitoring, chemical dosing, and custody transfer applications where every microampere represents critical data.

• Conformal Coating for Harsh Sites: The "K" version includes a protective layer that resists moisture, fungus, and chemical contaminants. This ensures long-term reliability in wastewater treatment plants, refineries, and paper mills where airborne corrosives typically degrade standard electronic hardware.

• Input Overvoltage Protection: Internal circuitry shields the module against accidental wiring errors or surges up to 28.8V DC. This protection prevents costly module failure during commissioning or field maintenance errors.

FAQs

• Does the 1756-IF16IHK require a specific Removable Terminal Block (RTB)?

  Yes. Due to the 16-channel isolated density, this module requires the 36-pin 1756-TBCH or 1756-TBSH terminal block. We recommend verifying the RTB compatibility to ensure correct field wiring alignment.

• Can I use this module for non-HART analog sensors?

  Absolutely. The module functions as a high-precision standard isolated analog input card. You can disable HART functionality in the Studio 5000 configuration for channels that only require 4-20mA signal processing.

• What is the significance of the "H" in the part number?

  The "H" signifies HART communication capability. This allows the module to communicate with smart devices to retrieve manufacturer IDs, device tags, and diagnostic information alongside the primary analog signal.

• Is this a genuine, factory-sealed unit?

  Yes. We guarantee this unit is 100% Brand New. It ships in its original Allen-Bradley factory packaging with intact security seals, ensuring the conformal coating and internal electronics remain in pristine condition from the production line to your facility.