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Product Introduction
The Allen-Bradley 1771-IR Analog RTD Input Module is an analog input module designed for temperature measurement in PLC-5 based automation systems from Allen-Bradley. It is specifically engineered to interface with resistance temperature detectors (RTDs), allowing accurate monitoring of temperature conditions in industrial processes.
The module supports up to six analog RTD input channels using a 3-wire RTD configuration, which helps improve measurement accuracy by compensating for lead resistance. This capability makes the module well suited for applications where stable and precise temperature monitoring is required.
Installed in a standard 1771 I/O chassis, the 1771-IR communicates directly with the PLC-5 processor through the backplane. It converts RTD signals into digital data that can be processed by the controller for temperature regulation, system monitoring, and automated process control in manufacturing and industrial environments.
Product Specifications
| Parameter | Description |
|---|---|
| Product Name | Allen-Bradley 1771-IR Analog RTD Input Module |
| Manufacturer | Allen-Bradley |
| Series | 1771 PLC-5 I/O System |
| Module Type | Analog RTD input module |
| Input Channels | 6 points |
| Sensor Type | 3-wire RTD |
| Compatible System | PLC-5 |
| Backplane Current | 0.950 A @ 5 VDC |
| Installation Location | 1771 I/O chassis |
| Dimensions | 165 × 51 × 89 mm |
| Weight | 0.45 kg |
Applications
● Industrial Temperature Monitoring
Collects temperature data from RTD sensors to ensure stable operation of industrial processes and equipment.
● Manufacturing Process Control
Used in production lines where accurate temperature measurement is critical for product quality and equipment protection.
● Energy and Utility Systems
Monitors temperature conditions in power equipment, heating systems, and industrial facilities.
● Machine Automation Systems
Allows PLC controllers to monitor machine temperature conditions and respond automatically to abnormal changes.
● Process Industries
Widely applied in chemical processing, water treatment, and other industries requiring reliable temperature measurement.
Advantages
● Dedicated RTD Measurement
Designed specifically for RTD sensors, ensuring accurate and stable temperature acquisition.
● 3-Wire RTD Support
Improves measurement accuracy by compensating for lead resistance in sensor wiring.
● Multiple Input Channels
Provides six analog input points for monitoring several temperature sensors simultaneously.
● Reliable PLC Integration
Communicates directly with the PLC-5 processor through the 1771 system backplane.
● Compact Modular Installation
Fits into a standard 1771 I/O chassis, allowing flexible expansion of temperature monitoring capability.
● Stable Industrial Performance
Built for long-term operation in demanding industrial environments.
