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  • 1746-NR4REP

Overview

Features

  • Backplane current:
    • 50mA at 5V
    • 50mA at 24V
  • Input types:
    • 100, 200, 500, and 1,000Ω Platinum (385)
    • 100, 200, 500, and 1,000Ω Platinum (3916)
    • 10Ω Copper (426)
    • 120Ω Nickel (618 and 672)
    • 604Ω Nickel-Iron (518
    • 150, 500, 1,000 and 3,000Ω resistance input
  • Selectable resistance scale:
    • 1Ω or 0.1Ω for all resistance ranges; or
    • 0.1Ω or 0.01Ω for 150Ω potentiometer
  • 10 to 250Hz selectable filter frequency

Description

The Allen-Bradley 1746-NR4 Resistance RTD Analog Input Module interfaces with platinum, nickel, copper and nickel-iron RTDs, and with variable resistance devices such as potentiometers (0 to 3,000Ω maximum). The The module provides on-board RTD temperature scaling in degrees Celsius and degrees Fahrenheit or resistance scaling in ohms. The 0.5mA RTD excitation current cannot be used for a 10Ω Copper RTD. It is recommended for use with higher resistance ranges for both RTDs and direct response inputs (1,000Ω RTDs and 3,000Ω resistance ranges).