Allen-Bradley 1746-NR4

Allen-Bradley 1746-NR4 | 4-Channel RTD Analog Input Module for SLC 500 Systems

Overview

The Allen-Bradley 1746-NR4 is a 4-channel analog input module designed for SLC 500 systems, capable of directly interfacing with Resistance Temperature Detectors (RTDs). It offers high-resolution temperature measurement, making it ideal for industrial applications requiring precise and reliable thermal monitoring and control.

Key Features

• Number of Inputs: 4 RTD input channels

• Input Type: RTD sensors including PT100, NI100, and others

• High Accuracy: Provides high-resolution temperature sensing

• Cold-Junction Compensation: Built-in for accurate temperature readings

• Diagnostic LEDs: Status indicators for easy troubleshooting

• Noise Immunity: Designed to operate reliably in industrial environments

• Backplane Communication: Seamlessly integrates into SLC 500 chassis

Technical Specifications

• Catalog Number: 1746-NR4

• Supported RTD Types: PT100, PT1000, NI100, and others

• Temperature Measurement Range: -200°C to +850°C (depending on RTD type)

• Resolution: 0.1°C or better

• Input Resistance: > 1 MΩ

• Isolation Voltage: 1500V RMS between field inputs and backplane

• Backplane Current Load: 110 mA at 5V DC, 100 mA at 24V DC

• Operating Temperature Range: 0°C to 60°C (32°F to 140°F)

• Mounting: Standard SLC 500 chassis slot

• Certifications: UL, CE, CSA

Applications

• Industrial process temperature control

• Thermal monitoring in manufacturing

• HVAC systems

• Food and beverage processing

• Pharmaceutical manufacturing

Why Choose the 1746-NR4?

• Precise Temperature Measurement: High-resolution sensing for critical applications

• Reliable RTD Support: Direct connection for a variety of RTD types

• Easy System Integration: Designed for SLC 500 platform compatibility

• Built-In Compensation: Accurate measurements with integrated cold-junction compensation

• Industrial Durability: Built for rugged environments

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