The Allen Bradley 1771-NT1 is a PLC-5 series high-resolution thermocouple and millivolt analog input module designed for the 1771 I/O platform. It is engineered for precision temperature measurement and low-level analog signal acquisition in demanding industrial process environments.
Featuring isolated input channels and advanced signal processing capability, the 1771-NT1 is widely used in applications requiring highly accurate thermal monitoring and stable process feedback.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Allen Bradley (Rockwell Automation) |
| Catalog Number | 1771-NT1 |
| Module Type | Thermocouple/mV Analog Input Module |
| System Family | PLC-5 / 1771 I/O |
| Input Channels | 8 analog inputs |
| Supported Inputs | Thermocouple & millivolt signals |
| Thermocouple Types | B, E, J, K, R, S, T |
| Input Range | ±105 mV |
| Resolution | 16-bit high resolution |
| Input Resolution | 3.3 µV/bit |
| Accuracy | 0.01% FS typical @ 25°C |
| Update Time | Max 25 ms per module |
| Input Impedance | >10 MΩ |
| Backplane Current Draw | 1.5 A @ 5 V DC |
| Isolation | 1000V channel isolation |
| Data Format | BCD or Natural Binary |
| Remote Termination Panel | 1771-RTP1 |
| Cable Assemblies | 1771-NC6 / 1771-NC15 |
| Mounting Type | Single-slot 1771 chassis installation |
| Operating Temperature | 0°C to 60°C |
| Storage Temperature | -40°C to 85°C |
| Weight | ~0.68–1.0 kg |
| Dimensions (L×W×H) | 323 mm × 240 mm × 64 mm |
System Role Overview
The 1771-NT1 module is designed for high-precision temperature and low-level analog signal acquisition in PLC-5 systems.
Core functions include:
- Thermocouple temperature monitoring
- Millivolt signal measurement
- High-resolution analog-to-digital conversion
- Isolated process signal acquisition
- Integration with PLC-5 block transfer architecture
- Advanced thermal process monitoring
Its intelligent analog processing capability makes it suitable for critical industrial applications where accuracy and reliability are essential.
Recommended Related Modules
| Model | Function |
|---|---|
| 1771-IXE | Thermocouple/mV input module |
| 1771-IR | RTD input module |
| 1771-IFE | Standard analog input module |
| 1771-IFF | High-resolution analog input module |
| 1771-ASB | Remote I/O adapter |
| 1771-P7 | Chassis power supply |
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|---|---|
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