Analog I/O Module Allen-Bradley 1791-N4C2

Product Overview: Allen-Bradley 1791-N4C2 Analog Block I/O Module

Key Technical Specifications

• Brand: Allen-Bradley
• Model: 1791-N4C2
• Series: 1791 Block I/O
• Module Type: Combination Analog Input / Output Module
• Total Channels: 6 Points (4 Inputs, 2 Outputs)
• Analog Inputs: 4 Channels, Selectable Voltage or Current
• Analog Outputs: 2 Channels, 0-20 mA Current
• Input Impedance: 10 Megohms
• Output Impedance: Less than 1 Ohm
• Base Accuracy: 0.1% at 25°C
• Update Rate: 10 ms per channel
• Power Dissipation: 16.9 Watts Maximum
• Weight: 1.25 lbs (0.57 kg)

Analog Input Characteristics

• The four input channels are individually configurable.
• You can set all inputs as voltage or current signals based on your application needs.
• The module supports both single-ended and differential voltage input wiring.
• It includes a built-in 24VDC current-limited power source.
• This internal supply powers loop-powered transducers like 2-wire transmitters.
• The high 10-Megohm input impedance minimizes signal loading on connected devices.

Compatibility & Communication

• The 1791-N4C2 is compatible with major Allen-Bradley PLC families.
• It works with PLC-2, PLC-3, and PLC-5 series controllers.
• This module also communicates with SLC 500 controllers via discrete transfer.
• It connects to the controller via a standard Remote I/O (RIO) network link.
• The module handles all signal conditioning and conversion internally.

Frequently Asked Questions (FAQ)

• Q: What types of signals can the 1791-N4C2 inputs read?
  A: Each of the four inputs can be configured for voltage or current analog signals.
• Q: What is the output signal type and range?
  A: It has two outputs that provide a 0-20 mA current signal.
• Q: What is the accuracy of this analog module?
  A: The module has a high 0.1% accuracy at 25°C.
• Q: Can this module power field transmitters?
  A: Yes, it includes a 24VDC source to power loop-powered (2-wire) transmitters.
• Q: Is the 1791-N4C2 in stock?
  A: Yes, we have original stock available for fast delivery.
• Q: What is your return policy?
  A: We offer a full 30-day return policy for your confidence.

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