OVERVIEW

Official designation: Allen-Bradley 1791-N4V2 (Block I/O, Analog Input/Output Module)

Role/Application: This analog I/O block provides four configurable inputs and two voltage outputs for distributed signal processing and control over the Remote I/O network.

KEY SPECS SUMMARY

Power: 85 to 132V AC supply, 10 to 31.2V DC on-state

Interfaces / Ports: Remote I/O link, two removable terminal blocks

Indicators: Refer to the latest manufacturer manual.

Operating Temp: Refer to the latest manufacturer manual.

Platform / Compatibility: PLC-2, PLC-3, PLC-5/250, and SLC-500 controllers

Limit: Absolute accuracy 0.1 percent, update rate 108 milliseconds

Lifecycle: Discontinued/Obsolete

FREQUENTLY ASKED QUESTIONS

Technical Specifications:

Q: What are the configurable input signal ranges supported by the four channels?

A: The inputs are configurable for either plus/minus 10 volts or 0 to 20 milliamperes analog signals.

Wiring & Installation:

Q: What is the typical AC voltage supply requirement for the 1791-N4V2 module?

A: The module requires an AC supply voltage in the range of 85 to 132 volts AC.

Troubleshooting & Compatibility:

Q: What is the approximate signal delay time when a signal changes state?

A: The typical on/off signal delay time for this module is 1.0 millisecond.

Replacement & Upgrades:

Q: Does the 1791-N4V2 module feature any short circuit protection on the output channels?

A: The module is designed with indefinite short circuit protection on the output channels.