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Allen Bradley 1791-NDC: 4 Analog Inputs, 2 Current Outputs

Allen-Bradley 1791-NDC Analog Block I/O Module with 4 Inputs and 2 Outputs.

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ManufacturerAllen Bradley

Part number1791-NDC

Inputs 4 Selectable (Voltage/Current)

Outputs 2 Current (0-20mA)

Resolution 14-bit (Inputs), 13-bit (Outputs)

Accuracy 0.1% Absolute

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4 Selectable Analog Inputs 2 Current Outputs (0-20mA) 0.1% Absolute Accuracy 24V DC Operation Compatible with PLC-2, PLC-3, PLC-5, SLC Block Transfer/Discrete Transfer Communication

Product description

The Allen-Bradley 1791-NDC is a 6-point analog block I/O module that offers 4 selectable analog inputs and 2 current outputs, operating on a 24V DC power supply. It provides a 13-bit resolution for its current outputs, with a range of 0-20mA and an output impedance greater than 1 megohm. The module exhibits an absolute accuracy of 0.1% at 25°C and an overall accuracy drift of 75 ppm/°C.

This module is designed for various industrial automation applications requiring analog signal processing. It is compatible with Allen-Bradley PLC-2, PLC-3, PLC-5, PLC-5/250, and SLC5/02 controllers, communicating via block transfer or discrete transfer. Its features are beneficial in manufacturing, process control, and utility sectors where precise analog signal monitoring and control are essential.

Stanlo Automation offers the Allen-Bradley 1791-NDC, a discontinued but reliable component for your automation needs. As a veteran-owned distributor, we provide access to surplus and hard-to-find parts, ensuring quality and value. Trust Stanlo Automation to supply the essential components that keep your industrial systems running efficiently.

Technical specifications

Inputs	4 Selectable (Voltage/Current)
Outputs	2 Current (0-20mA)
Resolution	14-bit (Inputs), 13-bit (Outputs)
Accuracy	0.1% Absolute
Power Supply	24V DC
Dimensions	6.95H x 2.7W x 3.85D inches
Compatibility	PLC-2, PLC-3, PLC-5, SLC5/02
Input Impedance	10 Megohms (Voltage), 250 Ohms (Current)

Common applications

Process Control

Manufacturing

Data Acquisition

Automation Systems

Industrial Monitoring

Compatible systems

PLC-2 PLC-3 PLC-5 PLC-5/250 SLC5/02

Also known as

1791NDC, Allen-Bradley Analog Module, Block I/O 1791-NDC

Replaces / compatible with

The 1791-NDC is a discontinued/obsolete module. It can be replaced by other Allen-Bradley analog I/O modules with similar specifications, depending on system compatibility and availability.

Technical note

Expert tip

This module is discontinued/obsolete, making surplus sourcing from reliable distributors like Stanlo Automation essential for maintenance and upgrades.

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Frequently asked questions

What are the key specifications of the Allen-Bradley 1791-NDC module?

The 1791-NDC has 4 selectable analog inputs and 2 current outputs (0-20mA) with 13-bit resolution. It operates on 24V DC, features 0.1% absolute accuracy, and is compatible with several Allen-Bradley PLC and SLC controllers.