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Allen-Bradley - 1790D-N4C0 Analog Input Module

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About the Product

Allen-Bradley 1790D-N4C0 Analog Current Input Module Product Introduction

Key Technical Specifications

  • Brand: Allen-Bradley
  • Model: 1790D-N4C0
  • Input Channels: 4 single-ended, non-isolated current inputs
  • Input Range (Configurable): 4-20 mA (default) or 0-20 mA
  • Resolution: High 12-bit unipolar (1/4096 full scale)
  • Bit Resolution: 3.90 µA/bit (4-20 mA) or 4.88 µA/bit (0-20 mA)
  • Overall Accuracy: Excellent ±0.2% of full scale at 0 to 55°C
  • Conversion Time: 10 milliseconds per channel
  • Input Impedance: 249 Ω standard
  • Field Power Supply: 21.6 to 26.4V DC (24V DC +10% nominal)
  • Isolation: Photocoupler isolation (I/O to logic) tested at 1250V AC rms
  • Connection: Convenient 37-pin D-shell connector
  • Indicators: Four red/green LEDs for per-channel status

Frequently Asked Questions (FAQ)

  • Q: What is the full model number for this analog input module?
    A: This is the Allen-Bradley 1790D-N4C0 four-channel current input module.
  • Q: What current signals can the 1790D-N4C0 module read?
    A: It can read both standard 4-20 mA signals and 0-20 mA signals, configurable in software.
  • Q: How accurate is the measurement from this module?
    A: It provides high accuracy of ±0.2% of full scale across its specified temperature range.
  • Q: What is the resolution of the analog-to-digital conversion?
    A: It uses a 12-bit converter, providing fine resolution of 1 part in 4096.
  • Q: How many sensor inputs can I connect to one module?
    A: The 1790D-N4C0 provides four independent analog input channels.
  • Q: Can I add more I/O to this system?
    A: Yes, as a base module, it can accommodate up to two additional discrete expansion modules.
  • Q: Is calibration needed before use?
    A: No, the module comes factory-calibrated and requires no field calibration.

For further specifications or to discuss your application, contact our technical sales team.

© 2026 NexAuto Technology Limited. All rights reserved.
Original Source: https://www.nex-auto.com/
Contact: sales@nex-auto.com
Phone: +86 153 9242 9628

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