1791-NDC | Allen-Bradley Analog Block I/O Module - Petro Auto Tech

Product Overview

The 1791-NDC is an Analog Block I/O Module from Allen-Bradley, part of the 1791 Block I/O product line. This module provides reliable analog input and current output capabilities for industrial automation systems. It operates with a 24V DC power supply and draws 600 mA current, making it a compact and efficient solution for process control applications.

Technical Specifications Analysis

The 1791-NDC module features 4 analog inputs and 2 current outputs. It supports an update rate per channel of 108 ms and an input bandwidth of 5 Hz. The module has a power dissipation of 11.52 W max and a thermal dissipation of 39.28 BTU/hr max. Its weight is 1.00 lbs (0.45 kg). These specifications ensure stable performance in demanding industrial environments.

Application Scenarios & Usage Methods

The 1791-NDC is ideal for monitoring and controlling analog signals in manufacturing plants, such as temperature or pressure sensors. Use it with Allen-Bradley PLC-5 or SLC 5/02 controllers for seamless integration. Connect 4 analog inputs to field devices and 2 current outputs to actuators for precise process control. The module communicates via block transfer for efficient data exchange.

Installation Guide & Packing List

Mount the 1791-NDC on a DIN rail in a clean, dry enclosure. Ensure the 24V DC power supply is stable and within the required current range. Connect input and output wiring per the manual, using shielded cables for noise immunity. The package typically includes the module and mounting hardware. Always verify the part number matches your system requirements.

Purchasing Advice

When buying the 1791-NDC, confirm its 4 analog inputs and 2 current outputs meet your application needs. Check compatibility with your controller, such as Allen-Bradley PLC-2 or SLC 5/02. Petro Auto Tech offers genuine Allen-Bradley modules with fast delivery. Order from a trusted supplier to ensure product authenticity and support.

Repair & Maintenance Tips

Regularly inspect the 1791-NDC for dust or moisture buildup. Clean with a dry cloth and avoid solvents. Check wiring connections for tightness and signs of corrosion. Store the module in a static-free environment when not in use. Monitor power dissipation and thermal dissipation to prevent overheating.

Frequently Asked Questions (FAQs)

Q: What is the power supply voltage for the 1791-NDC?

A: The 1791-NDC operates with a 24V DC power supply and requires 600 mA current.

Q: How many inputs and outputs does the 1791-NDC have?

A: It has 4 analog inputs and 2 current outputs.

Q: What is the update rate per channel for this module?

A: The update rate per channel is 108 ms.

Q: What is the weight of the 1791-NDC module?

A: The module weighs 1.00 lbs (0.45 kg).

Q: What is the input bandwidth of the 1791-NDC?

A: The input bandwidth is 5 Hz.