The Allen Bradley 1771-NT1 is a PLC-5 series high-density thermocouple and millivolt input module designed for the 1771 I/O platform. It is used to convert low-level analog signals from temperature sensors and process instrumentation into digital values for PLC-5 controllers.
This module is engineered for precision thermal measurement, stable signal conditioning, and reliable operation in harsh industrial environments, making it suitable for critical process control applications.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Allen Bradley (Rockwell Automation) |
| Catalog Number | 1771-NT1 |
| Module Type | Thermocouple / mV Input Module |
| System Family | PLC-5 / 1771 I/O |
| Input Channels | 8 differential inputs |
| Supported Inputs | Thermocouple & millivolt signals |
| Thermocouple Types | J, K, T, E, R, S, B |
| Input Range | ±100 mV (typical low-level input range) |
| Resolution | 16-bit high resolution |
| Accuracy | High-precision industrial measurement class |
| Cold Junction Compensation | Supported (built-in system compensation) |
| Input Configuration | Differential isolated channels |
| Backplane Current Draw | ~1.5 A @ 5 V DC |
| Data Format | Binary / engineering-scaled values |
| Isolation | Channel-to-channel and system isolation |
| Wiring Arm | 1771-WN |
| Mounting Type | 1771 chassis slot |
| Operating Temperature | 0°C to 60°C |
| Storage Temperature | -40°C to 85°C |
| Weight | ~0.7 kg |
| Dimensions (L×W×H) | 323 mm × 240 mm × 64 mm |
System Role Overview
The 1771-NT1 module is designed for precision temperature and low-level analog signal acquisition in PLC-5 automation systems.
Core functions include:
- Thermocouple temperature measurement
- Millivolt signal acquisition
- High-resolution analog-to-digital conversion
- Industrial process temperature monitoring
- Stable signal conditioning for noisy environments
- Integration with PLC-5 block transfer architecture
It is typically used in systems where high accuracy and reliability are required for thermal process control.
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-IFM | Fast millivolt input module |
| 1771-ASB | Remote I/O adapter |
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|---|---|
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