Allen-Bradley 1769-IR6/A
Allen-Bradley 1769-IR6/A
Allen-Bradley 1769-IR6/A
Allen-Bradley 1769-IR6/A
Allen-Bradley 1769-IR6/A
Allen-Bradley 1769-IR6/A
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1769-IR6/A

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The Allen-Bradley 1769-IR6/A Compact I/O RTD/Resistance Input Module is specifically designed to handle RTD and direct resistance signal measurement applications that require up to six channels.
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Technical specifications for 1769-IR6/A

  • Manufacturer:
    Allen-Bradley
  • Part Number:
    1769-IR6/A
  • Product Family:
    CompactLogix
  • Product Type:
    Compact I/O RTD/Resistance Input Module
  • Stock:
    1
  • Number of Inputs:
    6 Inputs
  • Input Type:
    6 RTD Inputs
  • Input Ranges:
    0 to 150 Ohms, 0 to 500 Ohms, 0 to 1000 Ohms, or 0 to 3000 Ohms
  • Converter Type:
    Sigma-Delta
  • Current Draw at 5.1V:
    100 mA
  • Current Draw at 24V:
    35 mA
  • Maximum Heat Dissipation:
    1.5 Watts
  • Common Mode Voltage:
    -10 to 10V DC
  • Maximum Cable Impedance:
    25 Ohms
  • Input Impedance:
    Over 10 Megaohms
  • Weight:
    0.18 kg
  • Estimated shipping dimensions:
    3.8x8.6x13cm
  • Tariff Code:
    8537101190
  • Country of origin:
    USA
  • Place of shipment:
    Xiamen,Fujian,China
By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

More Information

Overview Manuals Specifications Use Cases Communication & Connectivity Firmware & Updates

Features:

  • The Allen-Bradley 1769-IR6/A Compact I/O RTD/Resistance Input Module serves as the interface between field RTD/resistance sensors and the compact I/O rack backplane.
  • Each channel on the 1769-IR6/A can be independently configured via software for 2-wire or 3-wire RTD operation, or for direct resistance measurement, providing flexible adaptation to diverse sensor wiring requirements.
  • The 1769-IR6/A communicates directly through the 1769 backplane, distributing converted digital data to the controller's graph table without requiring additional communication interfaces.
When the 1769-IR6/A is configured as an RTD input, it supports seamless linearization, directly converting sensor readings to temperature values ​​in degrees Celsius (°C) or degrees Fahrenheit (°F). When configured as a resistance input, the 1769-IR6/A converts the voltage to a linear resistance value in ohms if the input signal is linear before entering the module.

The 1769-IR6/A provides essential input functions critical to temperature and resistance monitoring paths, directly affecting the accuracy and reliability of process measurements within the overall control system. One 1769-IR6/A module occupies a single slot in the 1769 chassis and can be installed in any I/O slot position following the controller and power supply modules. For applications requiring more than six channels, additional 1769-IR6/A modules can be added to the same chassis up to the controller's maximum I/O capacity.

For comprehensive fault detection applications, the 1769-IR6/A provides built-in diagnostic capabilities on each channel. In addition to standard signal conversion, the 1769-IR6/A performs automatic monitoring for open-circuit conditions (all wires), short-circuit conditions (excitation and return wires only), and over-range or under-range signal levels. The 1769-IR6/A diagnostic system continually evaluates the health of each input channel.

The 1769-IR6/A Allen-Bradley Compact I/O RTD/Resistance Input Module may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).
Allen-Bradley 1769-IR6/A Compact I/O RTD/Resistance Input Module Manuals,Datasheets,Link Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
Allen-Bradley 1769-IR6/A Compact I/O RTD/Resistance Input Module Specs

General

  • Manufacturer Allen-Bradley
  • Model 1769-IR6/A
  • Condition New Original ready stock
  • Product Family 1769-IQ32T,1769-IR6
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
  • Thermal Process Tracking: Monitors heat baselines in industrial ovens, chemical batch reactors, and manufacturing molds.
  • Sensor Compatibility: Supports standard 2-, 3-, or 4-wire Platinum, Nickel, Nickel-Iron, or Copper RTD elements.
  • Mechanical Displacement: Measures direct resistance (0 to 3000 ohms) from physical linear slidewires, strain gauges, and potentiometers.
  • Equipment Safety: Tracks internal bearing and winding temperatures in large electric motors or compressors to prevent overheating.
  • Fault Diagnostics: Signals immediate system alarms for open-circuit, short-circuit, and over-range or under-range sensor failures.
  • Chassis Backplane: Links directly to adjacent hardware modules using a built-in, slide-in tongue-and-groove integrated bus lever.
  • Direct PLC Control: Integrates as local expansion hardware for CompactLogix controllers or MicroLogix 1500 processor assemblies.
  • Network Adapters: Connects to remote plant-wide networks when paired with a 1769-AENTR Ethernet adapter or 1769-ADN DeviceNet module.
  • Data Transfer: Moves scaled digital values directly into the input image table memory of the host processor.
  • Distance Limits: Requires placement within a specific number of slots from the system power supply to prevent voltage drops.
  • Factory Microcode: Uses hardcoded operational logic embedded on the internal microchip, meaning the physical hardware rarely receives field updates.
  • Software Configuration: Deploys and manages channel settings using Rockwell Automation's Studio 5000 Logix Designer or RSLogix 5000.
  • Module Profiles: Connects to software via specific Add-On Profiles (AOP) or uses a Generic 1769 Module profile definition.
  • Host Updates: Receives operational bug fixes by updating the firmware of the connected CompactLogix PLC or Ethernet adapter.
Description
The Allen-Bradley 1769-IR6/A Compact I/O RTD/Resistance Input Module is a high-density analog expansion module designed for precise temperature and resistance monitoring within the CompactLogix system architecture. This 1769-IR6/A module provides six individually configurable channels that support standard 2-wire or 3-wire Resistance Temperature Detectors (RTDs) as well as direct resistance inputs. While the 1769-IR6/A is compatible with 4-wire sensors, it utilizes only three wires, leaving the fourth sense wire unused. To maintain high measurement accuracy and prevent thermal distortion, the 1769-IR6/A features two programmable excitation current values of 0.5mA and 1.0mA, which effectively minimize RTD self-heating during operation. 

This 1769-IR6/A module is specifically engineered to handle the challenge of precision thermal tracking in highly fluctuating industrial environments, resolving the common issue of signal degradation and conversion errors over long wire runs. When configured for RTD inputs, the 1769-IR6/A digitally converts analog data into linearized temperature readings in either Celsius or Fahrenheit, storing the results directly in its controller image table. For resistance testing, the 1769-IR6/A converts input voltages into linearized ohm values under the assumption that the direct resistance source is inherently linear. Additionally, the 1769-IR6/A ensures high system reliability by providing advanced diagnostics for every channel, including open-circuit detection across all wires, short-circuit detection for excitation and return lines, and over- and under-range monitoring. 

The 1769-IR6/A module is widely applied across automated industrial sectors such as oil and gas refining, chemical processing, pharmaceutical manufacturing, and HVAC climate control where tight thermal tolerances are mandatory. In terms of installation and integration, the 1769-IR6/A mounts directly onto a standard DIN rail or panel, interfacing seamlessly with CompactLogix controllers via the integrated backplane bus without requiring external power supplies. For long-term system evolution, retrofitting or upgrading legacy systems with the 1769-IR6/A allows plants to replace outdated, bulky signal transmitters with a compact, software-configurable layout that lowers wiring costs and simplifies hardware troubleshooting.
Revisions

Revision Part #

Also known as

1769-IR6 Ser A
1769-IR6/A, Series A, Rev A
Alternative Names
1769-IR6 1769-1R6/A 17691R6/A 1769IR6/A I769-1R6/A I769-IR6/A I7691R6/A
Technical notes
Allen Bradley1769-IR6/A CompactLogix 6 Channel RTD-Resistance Input I-O Module. This module digitally converts analog data and stores the converted data. Each of the 6 supported channels provides open-circuit and short-circuit as well as over- and under-range detection and indication.
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FAQS

The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
How does the 1769-IR6/A improve measurement accuracy in industrial environments?
The module is specifically designed to maintain measurement integrity in environments with fluctuating temperatures and long cable runs. Its signal conditioning and digital processing capabilities help reduce conversion errors and improve overall accuracy.
What diagnostic features are included in the 1769-IR6/A?
The 1769-IR6/A provides comprehensive diagnostics on every input channel, helping operators quickly identify wiring faults, sensor failures, and abnormal process conditions.
Can the 1769-IR6/A detect open-circuit conditions?
Yes. The module continuously monitors all sensor wiring and can detect open-circuit conditions on RTD leads, allowing maintenance teams to identify disconnected or damaged sensors.
Does the 1769-IR6/A support short-circuit detection?
Yes. The module can detect short circuits on both excitation and return wiring paths, helping prevent inaccurate measurements and improving system reliability.