OVERVIEW

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

Role/Application: This 24V DC analog I/O block provides 4 selectable inputs and 2 voltage outputs for precise signal management and distributed control over the Remote I/O network.

KEY SPECS SUMMARY

Power: 19.2 to 30V DC, 11.52 Watts max dissipation

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

Indicators: Power, Communication, Fault, Input, and Output LEDs

Operating Temp: 0 degrees C to plus 60 degrees C

Platform / Compatibility: PLC-2, PLC-3, and PLC-5 programmable controllers

Limit: Output impedance less than 1 Ohm, indefinite short circuit protection

Lifecycle: Discontinued/Obsolete

FREQUENTLY ASKED QUESTIONS

Technical Specifications:

Q: What are the primary analog signal types supported by the 4 input channels?

A: The four input channels support configurable voltage or current analog signal inputs.

Wiring & Installation:

Q: What are the external power voltage and current ratings for the module?

A: The external power voltage is 19.2 to 30V DC with a current rating of 600 milliamperes.

Troubleshooting & Compatibility:

Q: What is the rated absolute accuracy and linearity of the 1791-NDV module?

A: Absolute accuracy is 0.1 percent at 25 degrees C, and linearity is 0.05 percent at 25 degrees C.

Replacement & Upgrades:

Q: Are there any similar modules for current output instead of voltage output?

A: The 1791-NDC module is available, featuring 4 inputs and 2 current outputs.