Excellent PLC
Product Introduction
The Allen-Bradley 1771-NIS/B High Resolution Analog Input Module is a precision current input module designed for the PLC-5 based 1771 I/O platform from Allen-Bradley. It is engineered to capture and process high-accuracy analog current signals from industrial transmitters and field instruments.
The module supports eight analog current inputs and is optimized for standard 4–20 mA industrial signals. With integrated loop power capability, it can supply power directly to connected transmitters, simplifying wiring and reducing the need for additional external power supplies in control systems.
Installed in a 1771 I/O chassis, the 1771-NIS/B communicates with the PLC-5 controller through the system backplane. Its high-resolution measurement capability and stable performance make it suitable for applications requiring accurate monitoring of process variables such as pressure, temperature, flow, and level in industrial automation environments.
Product Specifications
| Parameter | Description |
|---|---|
| Product Name | Allen-Bradley 1771-NIS/B High Resolution Analog Input Module |
| Manufacturer | Allen-Bradley |
| Series | 1771 PLC-5 I/O System |
| Module Type | High-resolution analog current input module |
| Number of Inputs | 8 current inputs |
| Input Range | 4–20 mA |
| Loop Power | Supported |
| Backplane Current | 2.9 A |
| Operating Temperature | 0 to 60 °C |
| Dimensions | 165 × 51 × 89 mm |
| Weight | 0.45 kg |
Applications
● Industrial Process Monitoring
Collects analog signals from transmitters used to measure pressure, flow, and temperature.
● PLC-5 Automation Systems
Provides precise analog input data to PLC controllers for process regulation.
● Energy and Utility Systems
Monitors current signals from field instruments used in power and utility management.
● Manufacturing Process Control
Used in production systems where accurate measurement of process variables is required.
● Instrumentation and Measurement Systems
Interfaces with industrial transmitters that use the standard 4–20 mA communication signal.
Advantages
● High-Resolution Measurement
Designed to capture precise current signals for accurate process monitoring.
● Standard 4–20 mA Compatibility
Supports the most widely used analog signal standard in industrial instrumentation.
● Integrated Loop Power
Provides power for connected transmitters, simplifying system wiring.
● Multi-Channel Input Design
Eight input channels allow monitoring of multiple field instruments simultaneously.
● Reliable PLC Integration
Communicates efficiently with PLC-5 controllers through the 1771 system backplane.
● Industrial-Grade Performance
Built for stable operation in demanding automation and process environments.
