Allen-Bradley 1746-NT8 SLC 500 Thermocouple Input Module

Product Overview

The Allen-Bradley 1746-NT8 is a thermocouple and millivolt analog input module. It belongs to the SLC 500 series. This module provides eight input channels. You can use it with various thermocouple sensors. These include J, K, T, E, S, R, B, and N types. The module also reads millivolt signals. It works with +/- 50 mV and +/- 100 mV ranges. The 1746-NT8 fits in any I/O chassis slot except slot 0. It draws 120 mA from the 5V backplane. It also draws 70 mA from the 24V backplane. Total power consumption is 2.28W maximum. This module uses sigma-delta modulation for A/D conversion. It offers 16-bit resolution for input and 14-bit for output.

Application Scenarios

This module works well in industrial temperature monitoring. Use it in process control systems. It fits in manufacturing and automation plants. The 1746-NT8 handles temperature sensing in ovens and furnaces. It works with plastic molding machines. Use it for chemical process monitoring. The module also works in HVAC systems. It is ideal for any SLC 500 system needing accurate temperature data. You can use it for data logging and control loops. The module supports multiple thermocouple types. This makes it flexible for different applications.

Technical Specifications

The module has eight differential inputs. Update time ranges from 356 milliseconds to 4.05 seconds. Step response is 60 milliseconds for input and 2.5 milliseconds for output. Open circuit detection offers zero, upscale, or downscale options. The module operates from 0 to 60 degrees Celsius. Storage temperature is -40 to 85 degrees Celsius. Backplane current is 120 mA at 5VDC and 70 mA at 24VDC. Resolution is 16 bits in and 14 bits out. The module uses sigma-delta modulation. It has a UPC of 10611320130888. The 1746-NT8 is a reliable choice for temperature input.

Installation & Maintenance Guide

Install the module in any SLC 500 chassis slot except slot 0. Use a screwdriver to secure the module. Connect thermocouple wires to the terminal block. Ensure proper polarity for each sensor. Use shielded cable for long runs. The module requires no routine maintenance. Keep the chassis clean and dry. Check connections during system shutdowns. Do not expose the module to moisture. The operating temperature range is 0 to 60 degrees Celsius. Store the module in a dry place. Follow standard safety procedures during installation.

Packing List

The package includes one Allen-Bradley 1746-NT8 module. It also includes a user manual. No terminal block is included. You need to order the terminal block separately. The module comes in anti-static packaging. Shipping is via Fedex, UPS, or DHL. We ship from our warehouse within 24 hours. Contact us for bulk orders.