Allen-Bradley 1746-NT4

The Allen-Bradley 1746-NT4 is a high-precision thermocouple/mV analog input module designed for the Allen-Bradley SLC 500 modular PLC system. Floating Light Automation is a distributor and supplier that can offer this product.

As a trusted component from Rockwell Automation, this 4-channel input module delivers reliable temperature measurement for industrial automation applications, making it ideal for process control, manufacturing, equipment monitoring and other industrial scenarios.

Key Specifications

Core Features

1. High Precision Temperature Measurement

The Allen-Bradley 1746-NT4 module provides 16-bit resolution with 0.1°C/0.1°F temperature reading accuracy, ensuring stable and precise measurement results for all supported thermocouple types.

Built-in automatic cold junction compensation eliminates ambient temperature interference, maintaining measurement consistency even in environments with temperature fluctuations.

The configurable millivolt input range also supports direct connection to other low-level analog sensors.

2. Industrial Grade Isolation Protection

Each input channel features independent isolation from the PLC backplane, with 250V AC continuous isolation capability that effectively blocks electrical noise, ground loops and voltage surges from industrial field devices.

This isolation protection not only improves measurement accuracy but also extends the service life of the module and protects the entire SLC 500 system from electrical damage.

3. Flexible Configuration and Compatibility

The 1746-NT4 is fully compatible with all Allen-Bradley SLC 500 chassis, and can be seamlessly integrated with SLC 500, SLC 5/01 to SLC 5/05 CPUs.

Users can configure channel parameters, thermocouple types, signal ranges and filtering settings via RSLogix 500 programming software, adapting to different application requirements without additional hardware modifications.

Open channel configuration also allows mixed use of different thermocouple types on the same module to reduce system cost.

4. Built-in Diagnostics and Fault Alerts

The 1746-NT4 supports real-time diagnostics for open thermocouple wires, out-of-range signals and module fault conditions.

Fault information can be read directly via the SLC 500 PLC logic, enabling quick troubleshooting and reducing unplanned downtime.

Open thermocouple detection also supports configurable default output settings, allowing the system to maintain safe operation even when a sensor fault occurs.

Common Application Scenarios

· Industrial process temperature monitoring and control in chemical, food and beverage, pharmaceutical manufacturing

· Heat treatment furnace, drying oven, injection molding machine temperature monitoring

· Power distribution equipment and generator set temperature monitoring

· HVAC system temperature data acquisition

· Pilot equipment and test platform multi-point temperature measurement

· Other industrial scenarios requiring high-precision low-level analog signal acquisition

Order Information from Floating Light Automation

Floating Light Automation supplies original Allen-Bradley 1746-NT4 modules, with multiple inventory options including new original, refurbished original, and tested used units to meet different budget and project requirements.

All 1746-NT4 modules we supply undergo strict functional testing before shipment, with a 12-month warranty guarantee. We provide global express shipping, with professional packaging to ensure safe delivery of products.

For bulk orders or customized requirements, please contact our sales team for a quote.

Support & Service

Floating Light Automation provides professional pre-sales consultation and after-sales technical support for all Allen-Bradley SLC 500 series products. If you need product selection assistance, configuration guidance, or after-sales troubleshooting, please contact our technical team at any time.

We are committed to providing reliable industrial automation products and services to help your system maintain stable operation.