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      1756-IR12

      ControlLogix analog input module

      Product Information

      Product Describe

      ControlLogix analog input module

      features 12 channels in the 3-wire

      RTD mode and it is used as a

      general-purpose I/O device

      • Manufacturer:
        Allen-Bradley
      • Product Category:
        PLC System
      • Spare Part Number:
        1756IR12
      • Estimated shipping dimensions:
        3.5x14x14.5cm
      • Weight:
        0.2 kg
      • Tariff Code:
        8537101190
      • Country of origin:
        USA
      • Place of shipment:
        Xiamen, Fujian, China
      • Number of channels:
        12, non-isolated
      • Data resolution:
        24-bit
      • Mounting:
        Chassis
      • Display:
        Status LED
      • Input/output range:
        1 to 500/2 to 1000/4 to 2000/8 to 4000 Ohms
      • Isolation voltage:
        250 Volts (continuous)
      • Current draw at 5.1 Volts DC:
        200 milli Amps
      • Operating temperature:
        0 to 60 degrees Celsius (32 to 140 degrees Fahrenheit)
      • Stock:
        20
      By purchasing this item, you agree to the Terms & Conditions
      Moore Automated is NOT an authorized distributor of Allen-Bradley
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      Manuals
      1756-IR12.pdf
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          FAQ

          • What is the defined functional role of the 1756-IR12 within the Allen-Bradley ControlLogix modular I/O architecture?
            The 1756-IR12 is a ControlLogix RTD (Resistance Temperature Detector) analog input module designed to acquire multi-channel resistance measurements—typically from 3-wire RTD sensors—and convert them to high-resolution digital values that the controller can process for precision temperature control and monitoring.
          • How does the 1756-IR12 deliver high-fidelity sensing for industrial temperature measurement applications?
            The 1756-IR12 incorporates 24-bit resolution conversion, enabling fine-granularity data acquisition and precise interpretation of small resistance changes from RTD sensors across its 12 individual input channels, which enhances temperature control accuracy in closed-loop systems.
          • What RTD sensor ranges and resistance spans are supported by the 1756-IR12?
            The 1756-IR12 supports a range of resistance spans from 1…500 Ω through 8…4000 Ω, allowing compatibility with a wide variety of platinum, nickel, and copper RTD sensor types used in diverse industrial environments.
          • What key diagnostic and signal integrity-enhancing features does the 1756-IR12 include?
            The 1756-IR12 module integrates notch filtering, digital filtering, wire-off detection, sensor offset compensation, and automatic last-used range recall—all of which improve signal quality, enhance measurement stability, and reduce the need for frequent reconfiguration during maintenance.
          • What are the electrical and thermal specifications associated with the 1756-IR12 module?
            The 1756-IR12 draws approximately 200 mA at 5.1 V DC and 70–150 mA at 24 V DC from the backplane, with a maximum power dissipation of 2.7 W and corresponding thermal dissipation around 9.2 BTU/hr, which must be considered when planning power and thermal budgets for the chassis.

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