OVERVIEW

Official designation: Allen-Bradley 1791ES-IB8XOBV4 (CompactBlock Guard I/O, Safety Input/Output Module)

Role/Application: A safety module for distributed I/O systems featuring eight sinking safety inputs and four dual-channel bipolar safety outputs communicating via CIP Safety over EtherNet/IP.

KEY SPECS SUMMARY

Power: 24V DC nominal, 19.2 to 28.8V DC range

Interfaces / Ports: One RJ45 for EtherNet/IP, Screw connection

Indicators: Module, network, I/O status LEDs

Operating Temp: Minus 20 degrees C to plus 60 degrees C

Platform / Compatibility: Guard I/O, CIP Safety, GuardLogix controllers

Limit: 8 A total output current at 40 degrees C

Lifecycle: Active product status (varies by revision)

FREQUENTLY ASKED QUESTIONS

Technical Specifications:

Q: What are the off-state voltage and current maximums for the eight single-channel inputs?

A: The off-state input voltage is a maximum of 5V DC, and off-state current is 1.3 mA maximum.

Wiring & Installation:

Q: What are the approximate physical dimensions and weight of the 1791ES-IB8XOBV4 module?

A: Dimensions are 80 x 196 x 77 millimeters, and the approximate weight is 600 grams.

Troubleshooting & Compatibility:

Q: What type of short-circuit detection and protection does this module provide on its outputs?

A: It provides short-to-high, short-to-low, and cross-circuit fault detection with electronic short-circuit protection.

Replacement & Upgrades:

Q: What is the maximum current rating per output point for the four dual-channel outputs?

A: The maximum current rating per output point is 2 A, with a 2.5 A inrush rating.