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Allen Bradley

Allen Bradley 1791DS-IB8XOBV4 CompactBlock Guard I/O Module

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ManufacturerAllen Bradley

Part number1791DS-IB8XOBV4

Network Protocol DeviceNet with CIP Safety Extension

Safety Rating SIL 3 (IEC 61508) and Category 4 (EN standard)

Input Count 8 Single-Channel Safety Inputs

Output Count 4 Current Sourcing/Sinking Pair Outputs

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Veteran-owned

CAGE: 9NK75

8 Safety Inputs 4 Safety Outputs SIL 3 / Category 4 Rated DeviceNet CIP Safety IP67/65/64 Protection Self-Diagnostics

Product description

The Allen-Bradley 1791DS-IB8XOBV4 is a CompactBlock Guard I/O module designed for high-risk industrial environments, implementing CIP Safety over DeviceNet for Category 4 and SIL 3 functional safety. It features 8 single-channel safety inputs and 4 current sourcing/sinking pair outputs. With an operating voltage of 19.2V DC to 28.8V DC and a current draw of 85 mA @ 24V DC, it offers robust performance.

This module is ideal for applications requiring high safety integrity, such as with safety light curtains, E-stop buttons, gate switches, and laser scanners. Its IP64/65/67-rated housing makes it suitable for washdown and dusty environments. The 1791DS-IB8XOBV4 excels in decentralized safety logic where local IP67 protection is crucial.

Source your Allen-Bradley 1791DS-IB8XOBV4 from Stanlo Automation for reliable industrial automation solutions. We offer veteran-owned expertise and a commitment to quality surplus parts, ensuring your operations run smoothly and safely. Trust Stanlo Automation for your critical safety I/O needs.

Technical specifications

Network Protocol	DeviceNet with CIP Safety Extension
Safety Rating	SIL 3 (IEC 61508) and Category 4 (EN standard)
Input Count	8 Single-Channel Safety Inputs
Output Count	4 Current Sourcing/Sinking Pair Outputs
Operating Voltage	19.2V DC to 28.8V DC
Current Draw	85 mA @ 24V DC
On-State Voltage	11V DC minimum
Off-State Voltage	5V DC maximum
Protection Class	IP64/65/67

Common applications

Safety Light Curtains

E-Stop Buttons

Gate Switches

Laser Scanners

Industrial Safety Systems

Machine Guarding

Compatible systems

DeviceNet Scanners Allen-Bradley ControlLogix Allen-Bradley PLC-5 Allen-Bradley SLC 500

Also known as

Allen Bradley Guard I/O CompactBlock Guard I/O 1791DS Series Safety Module

Replaces / compatible with

This module is part of the Allen-Bradley Guard I/O family, designed for advanced safety applications.

Technical note

Expert tip

The 1791DS-IB8XOBV4 module's self-diagnostic function provides autonomous health checks, with the red Status LED indicating a fail-safe state upon fatal error detection.

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Frequently asked questions

What is the safety rating of the Allen Bradley 1791DS-IB8XOBV4 module?

The Allen Bradley 1791DS-IB8XOBV4 module meets Safety Integrity Level 3 (SIL 3) according to IEC 61508 and Category 4 as per EN standards. This ensures a high level of functional safety for critical applications.