The Allen-Bradley 1746-NT4 is a versatile 4-channel thermocouple/mV input module designed for the SLC 500 PLC family. It converts analog inputs from thermocouples or millivolt sources into digital values for PLC processing.

Key Features

• 4-channel input: Provides four independent channels for temperature or voltage measurement.
• Thermocouple and mV input: Supports various thermocouple types and millivolt inputs.
• High accuracy: Delivers precise measurement capabilities.
• Compact design: Easily fits into the SLC 500 chassis.
• Easy configuration: Configure using the SLC 500 programming software.

Technical Specifications

• Input types: Thermocouple (various types), millivolt
• Number of channels: 4
• Input range: Depends on the selected thermocouple type or millivolt range
• Resolution: High resolution for accurate measurements
• Accuracy: Typically within ±0.1% of the full-scale range
• Power requirements: Supplied by the PLC chassis
• Environmental conditions: Includes operating temperature range, humidity range, and other factors

Applications

The 1746-NT4 module is ideal for diverse industrial applications:

• Process control: Monitors and controls temperature in industrial processes.
• HVAC: Regulates temperature in heating, ventilation, and air conditioning systems.
• Machine control: Measures temperature in machines and equipment.
• Data acquisition: Collects temperature data for analysis.