Allen-Bradley 1771-IR/D RTD Input Module The Allen-Bradley 1771-IR/D is a Resistance Temperature Detector (RTD) input module designed for the PLC-5 series, providing precise temperature measurements across various industrial applications. Key Features Input Channels: Six three-wire RTD inputs, accommodating multiple temperature sensors. Data Formats: Supports Natural Binary, BCD Actual Temperature, or Ohm Readings, offering flexibility in data representation. Resolution: 16-bit resolution with a sensitivity of 1.0°C or 1.0°F per bit, ensuring accurate temperature readings. Update Time: Channel update time of 50 milliseconds for all six channels, facilitating timely data acquisition. Sensor Compatibility: Compatible with 100 Ohm platinum and 10 Ohm copper RTDs, as well as other sensors reporting in ohms. Technical Specifications Backplane Current: 800 milliamperes, eliminating the need for an external power supply. Signal Delays: DC On-state signal delay of 10 milliseconds; DC Off-state signal delay of 50 milliseconds; AC Off-state signal delay of 45 milliseconds (±15 ms). Power Dissipation: Maximum of 4.75 W, with thermal dissipation of 16.2 BTU/hr. Operating Temperature: 0°C to 60°C (32°F to 140°F), suitable for various industrial environments. Storage Temperature: -40°C to 85°C (-40°F to 185°F). Humidity: 5% to 95% non-condensing. Installation and Compatibility Mounting: Rack-mountable design compatible with 1771 I/O chassis. Wiring Arm: Utilizes the 1771-WH wiring arm for secure connections. Certifications: UL Listed, CSA certified, and CE compliant, ensuring adherence to industry standards. The 1771-IR/D RTD Input Module is engineered to deliver reliable and accurate temperature monitoring, making it an essential component for industrial automation systems requiring precise thermal data.