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Product Introduction
The Allen-Bradley 1791DS-IB8XOBV4 DeviceNet Safety CompactBlock I/O Module is a safety-rated distributed I/O device designed to meet the demands of modern industrial safety systems. As part of the CompactBlock Guard I/O series, this module integrates safety inputs, test pulse outputs, and configurable solid-state outputs into a single compact unit, enabling efficient and reliable safety control at the machine level.
It features 8 safety inputs, 8 test pulse outputs, and 4 solid-state bipolar outputs, allowing flexible interfacing with a wide range of safety devices such as emergency stop buttons, safety light curtains, and interlock switches. The inclusion of bipolar outputs provides additional versatility for controlling different types of loads and signaling requirements.
With built-in DeviceNet Safety communication, the module ensures secure and certified data transmission between field devices and safety controllers, eliminating the need for complex hardwired safety circuits. Its robust construction and high integration make it ideal for applications where both performance and safety compliance are critical.
Product Specifications
| Parameter | Description |
|---|---|
| Product Name | DeviceNet Safety CompactBlock I/O Module |
| Model Number | 1791DS-IB8XOBV4 |
| Manufacturer | Allen-Bradley (Rockwell Automation) |
| Network | DeviceNet Safety |
| Safety Inputs | 8 |
| Test Outputs | 8 (Test Pulse Outputs) |
| Outputs | 4 (Solid-state Bipolar Outputs) |
| Output Type | Bipolar (PNP/NPN compatible) |
| Power Supply | 24 V DC |
| Mounting Type | Panel Mount |
| Operating Temperature | Industrial standard range |
| Dimensions | 170 x 76 x 81 mm |
| Weight | 0.6 kg |
Applications
• Machine safety control systems – Designed for integration of emergency stop devices, safety gates, and light curtains in automated equipment
• Robotics and assembly lines – Provides flexible safety signal processing and output control for robotic cells
• Packaging machinery – Ensures safe operation where frequent human-machine interaction occurs
• Material handling systems – Supports safety monitoring and control in conveyor and logistics systems
• Industrial automation lines – Ideal for distributed safety I/O architectures requiring reliable communication
Advantages
• Flexible I/O configuration – Combines safety inputs, test pulse outputs, and bipolar outputs in one compact module
• Bipolar output capability – Supports both PNP and NPN control, increasing compatibility with various field devices
• Integrated DeviceNet Safety communication – Ensures secure and certified safety data transmission
• Compact and rugged design – Suitable for installation in space-constrained and harsh industrial environments
• Enhanced diagnostic capability – Test pulse outputs improve fault detection and system reliability
• Reduced wiring complexity – Distributed architecture simplifies installation and lowers overall system cost
