Description
The Allen-Bradley 1746-NT4 is a high-performance, 4-point thermocouple input module designed for integration with the SLC 500 programmable logic controller system. This module provides precise temperature monitoring capabilities, supporting a wide range of thermocouple types to accommodate diverse industrial process requirements.
Features
- 4-point analog input configuration for thermocouple sensors.
- Supports multiple thermocouple types including B, E, J, K, N, R, S, and T.
- Configurable voltage input ranges of 50 mV or 100 mV.
- Designed specifically for the SLC 500 series architecture.
- Compact module form factor for efficient rack mounting.
Technical Specifications
| Model Number |
1746-NT4 |
| Module Type |
Thermocouple Input Module |
| Input Channels |
4 |
| Supported Thermocouples |
B, E, J, K, N, R, S, T |
| Input Range |
50 mV or 100 mV |
| Series Compatibility |
Allen-Bradley SLC 500 |
| Weight |
0.26 kg |
Installation Guidelines
- Ensure the SLC 500 chassis power is disconnected before installing or removing the 1746-NT4 module.
- Handle the module by the edges and avoid touching the backplane connectors to prevent electrostatic discharge (ESD) damage.
- Ensure the module is fully seated in the chassis slot and secured using the top and bottom retaining screws.
- Use shielded thermocouple extension wire to minimize electromagnetic interference (EMI) in industrial environments.
- Verify that the thermocouple polarity matches the module input terminals to ensure accurate temperature readings.
- Maintain proper ventilation within the control cabinet to prevent overheating of the I/O rack.
FAQ
Is this module still available from the manufacturer? No, the 1746-NT4 has been discontinued by Allen-Bradley. We provide this unit as a reliable spare part solution for legacy system maintenance.
What thermocouple types are compatible with this module? The 1746-NT4 supports types B, E, J, K, N, R, S, and T, making it highly versatile for various temperature sensing applications.
