Allen-Bradley 1734-OB8S/B Safety Digital Output Module

Allen-Bradley 1734-OB8S/B POINT I/O Safety Digital Output Module

The Allen-Bradley 1734-OB8S/B safety digital output module provides eight safety-rated sourcing outputs designed for critical machine safety applications. This SIL 3 / PLe-certified module integrates seamlessly into POINT I/O distributed control architectures, delivering fail-safe output control for emergency stop circuits, safety interlocks, and protective device management in hazardous industrial environments.

Key Technical Parameters

• Safety Rating: SIL 3 per IEC 61508, PLe per ISO 13849-1, Category 4
• Output Channels: 8 safety-rated sourcing outputs
• Output Voltage: 24V DC nominal (19.2-30V DC operating range)
• Output Current: 2A per channel, 8A total module capacity
• Response Time: ≤10ms output reaction time for safety events
• Diagnostic Coverage: >99% with comprehensive fault detection
• Operating Temperature: 0°C to 60°C (32°F to 140°F)
• Certifications: TÜV, UL, CE, CSA safety approvals

Industrial Application Scenarios

Deploy the 1734-OB8S/B in safety-critical manufacturing environments including automotive assembly lines with robotic work cells, packaging machinery requiring light curtain integration, material handling systems with emergency stop networks, and pharmaceutical production facilities demanding validated safety protocols. This module excels in applications requiring certified safe torque-off (STO) control for servo drives, safety relay replacement, and distributed safety I/O expansion across multiple machine zones.

System Integration & Configuration

The 1734-OB8S/B integrates with GuardLogix and Compact GuardLogix safety controllers via CIP Safety over EtherNet/IP networks. Configure safety logic using Studio 5000 Logix Designer with integrated safety instruction sets. The module supports hot-swappable replacement with electronic keying to prevent configuration errors, and features dual-channel output monitoring for enhanced diagnostic capabilities. Pair with 1734 safety input modules and standard I/O modules on the same network segment for comprehensive machine control.

Frequently Asked Questions

Q: Can this module control standard non-safety loads?
A: Yes, while certified for safety applications, the 1734-OB8S/B can also control standard 24V DC loads when safety rating is not required for specific outputs.

Q: What is the maximum cable length to safety devices?
A: Up to 100 meters (328 feet) using shielded cable for safety-rated connections, following installation guidelines in the safety manual.

Q: Does this require special programming software?
A: Yes, safety logic programming requires Studio 5000 Logix Designer with the safety instruction library and GuardLogix controller platform.

Warranty & Technical Support

Covered by a 12-month manufacturer warranty against defects in materials and workmanship. Our certified safety system engineers provide configuration assistance, safety validation support, and troubleshooting guidance to ensure compliant installations meeting international safety standards.

Compatible Safety System Components

Build comprehensive safety architectures with these verified components:

• Allen-Bradley 1734-IB8S Safety Input Module - 8-channel safety input companion
• Allen-Bradley 1734-AENT/A EtherNet/IP Adapter - CIP Safety network adapter
• Allen-Bradley 1734-TOP Terminal Base - Mounting base for POINT I/O modules

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