Allen-Bradley 1771-NR (SER C) Analog RTD Input Module

The Allen-Bradley 1771-NR (SER C) Analog RTD Input Module is designed to provide precise temperature measurement and control in industrial automation systems. As part of the Allen-Bradley 1771 I/O family, this module is ideal for applications requiring the input of resistance temperature detectors (RTDs), enabling the monitoring of temperature-sensitive processes in real-time. It ensures reliable and accurate data collection from RTD sensors, facilitating temperature regulation across a variety of industrial applications.

Functional Highlights

• Accurate Temperature Measurement: The 1771-NR module is engineered to deliver high-precision temperature readings, ensuring that the temperature control systems remain accurate and reliable.

• Wide RTD Compatibility: It supports a broad range of RTD types, providing flexibility for various temperature sensing requirements in your automation setup.

• Easy Integration: Designed for seamless integration into Allen-Bradley systems, it connects effortlessly with PLC-5 controllers, improving system cohesion and performance.

• Real-Time Data Acquisition: This module continuously monitors temperature and provides real-time data, allowing operators to quickly detect and respond to any temperature anomalies.

• User-Friendly Interface: With clear diagnostic indicators, the module simplifies troubleshooting and maintenance, ensuring your system operates smoothly and with minimal downtime.

Technical Specifications

• Model: 1771-NR (SER C)

• Module Type: Analog RTD Input Module

• Input Channels: 8 RTD inputs (individually configured)

• RTD Type: Supports 100 Ohm Pt RTDs (e.g., Alpha 0.00385)

• Input Range: -200°C to +850°C (-328°F to +1562°F)

• Resolution: 16-bit resolution for accurate data representation

• Power Supply: 24V DC (nominal)

• Signal Type: Direct RTD input (4-wire configuration)

• Output Type: Digital signal converted from RTD measurements to scaled temperature readings

• Mounting: Compatible with 1771 I/O chassis (up to 8 modules)

• Operating Temperature Range: 0°C to 60°C (32°F to 140°F)

• Storage Temperature Range: -40°C to 85°C (-40°F to 185°F)

• Dimensions: 4.2 x 7.9 x 3.8 inches (107 x 201 x 96 mm)

• Weight: 0.8 lbs (0.36 kg)

• Diagnostic Indicators: LED status indicators for easy monitoring and troubleshooting

Typical Applications

The 1771-NR (SER C) Analog RTD Input Module is ideal for applications where precise temperature control and monitoring are critical. Its typical use cases include:

• Process Control: Used in industries such as chemical processing, where maintaining precise temperature levels is essential to product quality and safety.

• HVAC Systems: Monitors and controls temperature in large heating, ventilation, and air conditioning systems, ensuring efficient operation.

• Food and Beverage: Enables temperature regulation in cooking, freezing, and storage processes, helping to maintain quality and safety standards.

• Pharmaceutical Manufacturing: Critical in pharmaceutical processes where temperature control is essential for ensuring the efficacy of drugs and compliance with industry regulations.

• Power Generation: Provides accurate temperature readings in power plants, ensuring safe operation and efficient management of thermal systems.

• Automated Manufacturing: Used for temperature monitoring in automated production systems, ensuring that equipment operates within safe temperature ranges to avoid overheating.

Support & Maintenance

The 1771-NR module is built for durability and long-lasting performance, and it is supported by Rockwell Automation’s reliable service network. Support services include:

• Technical Support: 24/7 access to Allen-Bradley engineers who provide troubleshooting, technical advice, and system optimization.

• Software and Firmware Updates: Ensure the module stays up-to-date with the latest features and compatibility improvements.

• Repair and Replacement: Quick repair and replacement options minimize system downtime, ensuring continued operational efficiency.

• Comprehensive Documentation: Access to manuals, datasheets, and troubleshooting guides to ensure proper installation and maintenance.

FAQ

1. What types of RTDs does the 1771-NR support?

• The 1771-NR supports 100 Ohm Pt RTDs, such as Alpha 0.00385, making it compatible with common temperature sensing applications.

2. How many RTD channels are available on the 1771-NR module?

• This module provides 8 RTD input channels, each of which can be individually configured for flexibility in your system setup.

3. What is the temperature range of the 1771-NR?

• The module supports a temperature range from -200°C to +850°C (-328°F to +1562°F), making it suitable for a wide range of industrial applications.

4. Is the 1771-NR easy to integrate with existing Allen-Bradley systems?

• Yes, the 1771-NR module is designed to seamlessly integrate with Allen-Bradley PLC-5 controllers, ensuring a smooth and efficient setup.

5. What is the power supply requirement for the 1771-NR module?

• The 1771-NR requires a 24V DC power supply, which is standard for most Allen-Bradley I/O modules.