1791-N4V2 | Allen-Bradley Block I/O Module - Petro Auto Tech

Product Overview

The 1791-N4V2 is an Allen-Bradley Block I/O module designed for industrial automation systems. It belongs to the 1791 Block I/O product line and offers 4 selectable inputs per block, making it a flexible choice for monitoring discrete signals. This module provides reliable performance in PLC-based control environments.

Technical Specifications Analysis

The 1791-N4V2 features 4 selectable inputs per block and 2 outputs per block, enabling efficient signal handling. It delivers an update rate per channel of 108 ms, ensuring timely data acquisition. The module achieves an absolute accuracy of 0.1% at 25 degrees Celsius, supporting precise measurements. It includes indefinite short circuit protection for enhanced durability. Common mode rejection is rated at -75 dB, reducing electrical noise interference. The module weighs 1.25 lbs (0.57 kg) and carries UPC 612598122196.

Application Scenarios & Usage Methods

This Block I/O module suits discrete manufacturing lines, such as packaging or assembly systems, where it monitors limit switches and sensors. Use the 4 selectable inputs to configure each channel for current or voltage signals. The 2 outputs can drive actuators or indicators. In process control, the module interfaces with PLCs to provide real-time status updates, leveraging the 108 ms update rate. Install it in control cabinets near field devices to minimize wiring.

Installation Guide & Packing List

Mount the 1791-N4V2 on a DIN rail in a clean, dry enclosure. Connect input and output wiring per the manual, ensuring proper grounding. Verify power supply compatibility before energizing. The package typically includes the module and documentation. No additional accessories are included.

Purchasing Advice

When selecting the 1791-N4V2, confirm that your system requires 4 selectable inputs and 2 outputs with a 108 ms update rate. This module suits applications needing indefinite short circuit protection. Petro Auto Tech offers this module as a reliable source for industrial automation parts.

Repair & Maintenance Tips

Inspect the module periodically for dust or moisture. Clean with a dry cloth. Check connections for tightness. Store in a static-free environment. Avoid exposure to extreme temperatures. Replace if the module shows signs of damage.

Frequently Asked Questions (FAQs)

Q: What are the inputs per block on the 1791-N4V2?

A: The module features 4 selectable inputs per block.

Q: What is the update rate per channel?

A: The update rate per channel is 108 ms.

Q: Does the 1791-N4V2 offer short circuit protection?

A: Yes, it provides indefinite short circuit protection.

Q: What is the absolute accuracy of this module?

A: The absolute accuracy is 0.1% at 25 degrees Celsius.

Q: How many outputs does the module have?

A: It has 2 outputs per block.