Allen-Bradley 1791ES-IB8XOV4

Ethernet Block Guard I/O Module

Product Overview

The Allen-Bradley 1791ES-IB8XOV4 Ethernet Block Guard I/O Module is an industrial-grade distributed I/O device designed for safety and control applications over Ethernet/IP networks. It provides robust input and output interfaces for Guard I/O systems, enabling reliable monitoring and control of safety devices, actuators, and sensors. This module integrates seamlessly with Logix-based safety controllers, delivering deterministic performance, simplified wiring, and enhanced system safety.

Key Features

Ethernet/IP-enabled distributed I/O module
8 digital inputs and 4 digital outputs
Designed for Guard I/O and safety systems
High-speed and deterministic communication
LED status indicators for diagnostics
Industrial-grade construction for harsh environments
Compatible with Allen-Bradley Logix controllers
Simplifies safety system integration

Product Datasheet (Technical Specifications)

Parameter	Specification
Model Number	1791ES-IB8XOV4
Product Type	Ethernet Block Guard I/O Module
I/O Configuration	8 digital inputs, 4 digital outputs
Input Type	Discrete, safety-rated
Output Type	Discrete, safety-rated
Input Voltage	24 VDC
Output Voltage	24 VDC
Communication	Ethernet/IP, DeviceNet compatible
Isolation	Channel-to-channel and system isolation
Operating Temperature	0°C to +55°C
Storage Temperature	–20°C to +70°C
Relative Humidity	5–95% non-condensing
Mounting Type	DIN rail or panel mount
Dimensions	91 mm × 22 mm × 110 mm
Certifications	UL, CE, cULus
Origin	USA

Applications

The 1791ES-IB8XOV4 module is suitable for a wide range of industrial safety and automation applications:

Guarding Systems – Machine safety interlocks
Safety Monitoring – Emergency stop and safety gate monitoring
Automated Manufacturing Lines – Distributed I/O control for safety circuits
Conveyor Systems – Safety device integration
Material Handling Equipment – Actuator and sensor control
Process Automation – Safety I/O integration in chemical, automotive, and food industries

Product Usage Instructions

Installation: Mount the module securely on a DIN rail or panel mount inside the control cabinet.
Power Connection: Connect a 24 VDC power supply to the module.
I/O Wiring: Connect safety inputs (e.g., light curtains, E-stops) and outputs (e.g., safety relays, actuators) according to system design.
Ethernet Integration: Connect to the safety or standard Logix controller via Ethernet/IP network.
Startup: Power on the module and verify LED status indicators for proper operation.
Operation: The module communicates real-time I/O status to the controller and safely triggers outputs when conditions are met.
Maintenance: Periodically inspect wiring, connections, and LED status indicators to ensure continued safety compliance.

Technical Description

The Allen-Bradley 1791ES-IB8XOV4 integrates 8 safety-rated inputs and 4 safety-rated outputs in a compact, Ethernet-enabled module. It supports deterministic Ethernet/IP communication for Guard I/O systems, providing fast, reliable, and safe operation of distributed industrial I/O. The module’s robust construction allows it to withstand vibration, temperature fluctuations, and electrical noise commonly found in industrial environments. Its compatibility with Logix controllers simplifies configuration and monitoring of safety devices across multiple production zones.

Recommended Allen-Bradley Guard I/O Modules

Model Number	Type	Function
1791ES-IB8XOV4	Ethernet Guard I/O Module	8 inputs / 4 outputs
1791ES-IB8X	Guard I/O Module	8 inputs / 8 outputs
1791ES-OB4X	Guard Output Module	4 safety outputs
1791ES-IB16X	Guard Input Module	16 safety inputs
1791ES-OB8X	Guard Output Module	8 safety outputs
1791ES-IB12X	Guard Input Module	12 safety inputs
1791ES-OB12X	Guard Output Module	12 safety outputs
1791ES-IB4X	Guard Input Module	4 safety inputs
1791ES-OB16X	Guard Output Module	16 safety outputs
1791ES-IB24X	Guard Input Module	24 safety inputs
1791ES-OB24X	Guard Output Module	24 safety outputs
1791ES-IB32X	Guard Input Module	32 safety inputs
1791ES-OB32X	Guard Output Module	32 safety outputs
1791ES-IB8X-P	Guard Input Module	8 safety inputs, Ethernet
1791ES-OB4X-P	Guard Output Module	4 safety outputs, Ethernet
1791ES-IB16X-P	Guard Input Module	16 safety inputs, Ethernet
1791ES-OB16X-P	Guard Output Module	16 safety outputs, Ethernet
1791ES-IB8X-C	Compact Guard Input	8 inputs, compact version
1791ES-OB8X-C	Compact Guard Output	8 outputs, compact version
1791ES-IB4X-P	Guard Input Module	4 inputs, Ethernet-enabled

For Allen-Bradley Guard I/O solutions and industrial automation spare parts, visit:
🔗 http://www.dcsplcsystem.com

★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★

One year warranty, special discount after sale

The company focuses on DCS, PLC, robot, large servo four systems

The main products are all kinds of module/card, controller, touch screen, servo drive

The company’s advantages: the supply of imported original products, professional production of accessories

Fast delivery time, complete supply, The seller has more than $1526000 worth of industrial control products inventory

We Can transport to the world！！！

——————————————————————————————————————
[service contact information]

Purchase and consultation hotline: +8613365909307 (Whatsapp/ Wechat)

E-mail: dcsplcsales@gmail.com

Contact Person: Simon

① 24-hour email reply (12 hours);

② For shipment to countries outside Asia, please contact the seller.

Allen-Bradley 1791ES-IB8XOV4 | Ethernet Block Guard I/O Module