1756-ir6i_a_controllogix_isolated_rtd_input_module

Technical Specifications

Main Features and Advantages

High‑Accuracy Signal Conditioning: The 1756‑IR6I/A​ incorporates 16‑bit analog‑to‑digital conversion and advanced signal filtering, delivering high‑precision measurements essential for critical temperature control. It supports multiple RTD curves and direct resistance inputs with selectable ranges, allowing precise matching to sensor characteristics and minimizing measurement error across the operating range.Enhanced System Diagnostics and Safety: Each of the six input channels features individual 250 V AC isolation, effectively breaking ground loops and rejecting common‑mode noise in electrically noisy environments. The module provides comprehensive diagnostics including wire‑off detection, over‑range/under‑range alarms, and configurable process alarms. These features enable proactive maintenance by alerting operators to sensor failures or process deviations before they lead to downtime or product quality issues.Integration and Configuration Flexibility: As a native ControlLogix module, the 1756‑IR6I/A​ integrates seamlessly with Studio 5000 Logix Designer software. It supports real‑time sampling and multicasting of data, providing timely process information for fast control loops. The use of standard removable terminal blocks (1756‑TBNH/TBSH) simplifies wiring and module replacement, reducing maintenance time during system upgrades or troubleshooting.

Application Field

The 1756‑IR6I/A​ is widely deployed in industries requiring reliable and precise temperature monitoring. In chemical and petrochemical processing, it is used for reactor temperature control, distillation column monitoring, and pipeline temperature tracking, where its channel isolation ensures signal integrity in high‑voltage environments. Power generation facilities utilize the module for turbine bearing temperature monitoring, heat exchanger control, and boiler temperature supervision, leveraging its high accuracy to protect critical assets from thermal damage.In pharmaceutical and food & beverage manufacturing, the module supports compliance with stringent regulatory requirements by providing accurate batch process temperature profiling and clean‑in‑place (CIP) system monitoring. Its ability to handle long sensor lead lengths without signal degradation makes it suitable for large‑scale industrial plants. The 1756‑IR6I/A​ is also commonly applied in HVAC system control for large buildings, water treatment temperature monitoring, and discrete manufacturing processes such as plastic injection molding and metal heat treating, where stable temperature measurement is critical to product quality.

Related Products

1756‑IRT6I​ – ControlLogix isolated RTD/thermocouple combo input module; adds thermocouple support for mixed sensor applications.1756‑IF6I​ – ControlLogix isolated analog voltage/current input module; used for standard 4–20 mA or 0–10 V process signals.1756‑OW16I​ – ControlLogix digital output module; often used in the same chassis for temperature control valve actuation.1756‑L7x​ series (e.g., 1756‑L75) – ControlLogix controllers that serve as the central processor for systems using the 1756‑IR6I/A.1756‑TBNH​ – Standard removable terminal block required for field wiring connection to the 1756‑IR6I/A​ module.1492‑IFM20‑3​ – Alternative third‑party wiring interface module that can be used with the 1756‑IR6I/A​ for specific cabling needs.