Allen-Bradley 1756-IR61 Analog Isolated Input Module RTD

Allen-Bradley 1756-IR61 is a six-channel analog isolated RTD input module for Rockwell Automation’s ControlLogix 1756 I/O system. It provides six isolated RTD input points, offering signal isolation from the backplane and between channels to help preserve measurement integrity in electrically noisy industrial environments. Designed to interface RTD sensors with a ControlLogix controller, the module converts resistance-based RTD readings into digital data that the PLC can process for temperature monitoring and control. The device carries firmware revision 1.12, reflecting its onboard software version. Typical applications include process temperature monitoring, batch control, and environmental sensing in industries such as manufacturing, chemical processing, energy, and HVAC, where precise RTD measurements and robust isolation are critical. As a 1756 I/O module, it integrates with the standard 1756 backplane, enabling scalable temperature measurement across multiple I/O points within a single ControlLogix chassis. This module is suited for systems requiring multiple isolated RTD channels in a compact form factor, delivering reliable temperature data to control strategies and diagnostics within the Rockwell ecosystem.