1746-NR4 Allen-Bradley SLC 500 4-Channel RTD & Resistance Analog Input Module

Description:

• Genuine Allen-Bradley SLC 500 analog input module for temperature measurement and resistance sensing applications
• Provides 4 individually configurable analog input channels for RTD and resistance inputs
• Supports multiple RTD sensor types including Platinum, Nickel, Copper, and Nickel-Iron, as well as direct resistance inputs and potentiometers
• Accepts 2-wire, 3-wire, and 4-wire RTD connections for flexible installation
• Converts RTD signals directly into °C, °F, or resistance (Ohms) values for use within the PLC program
• Features Sigma-Delta A/D conversion for high measurement accuracy and excellent noise immunity
• Programmable digital filtering with selectable frequencies for improved signal stability
• Built-in open-circuit, short-circuit, and out-of-range detection for enhanced diagnostics
• Installs in any SLC 500 (1746) chassis slot except Slot 0
• Ideal for process control, HVAC, water treatment, food processing, manufacturing, OEM equipment, and industrial automation
• Discontinued by Rockwell Automation; widely used for maintaining and expanding legacy SLC 500 systems.

Specifications:

• Manufacturer Name: Allen-Bradley (Rockwell Automation)
• Part Number (MPN): 1746-NR4
• Product Series: SLC 500
• Product Type: RTD / Resistance Analog Input Module
• Number of Inputs: 4
• Input Types:
  • RTD (2-, 3-, and 4-wire)
  • Resistance
  • Potentiometer
• Supported RTD Types:
  • Platinum
  • Nickel
  • Copper
  • Nickel-Iron
• Resolution:
  • 16-bit Input
  • 14-bit Output
• A/D Conversion: Sigma-Delta
• Backplane Current Consumption:
  • 50 mA @ 5 VDC
  • 50 mA @ 24 VDC
• Backplane Power Consumption: 1.5 W Maximum
• External Power Supply Required: None
• Isolation:
  • 500 VDC between inputs and chassis/backplane
• Input Filter Frequencies:
  • 10 Hz
  • 50 Hz
  • 60 Hz
  • 250 Hz
• Bandwidth: 2.62–65.5 Hz
• Update Time: 17 ms to 1.2 s
• Operating Temperature: 0°C to +60°C (32°F to +140°F)
• Storage Temperature: -40°C to +85°C (-40°F to +185°F)
• Mounting Type: SLC 500 Chassis
• Compatible Chassis Slot: Any slot except Slot 0
• Applications:
  • Temperature Monitoring
  • Process Control
  • Industrial Automation
  • HVAC Systems
  • Water & Wastewater
  • Food & Beverage
  • OEM Equipment

Dimensions:

• Standard 1746 SLC 500 rack-mounted module form factor.
• Fits any SLC 500 chassis slot except Slot 0.

Weight:

• Approximate Weight: 0.27 kg (0.60 lb).