OVERVIEW

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

Role/Application: A distributed safety module featuring eight single-channel safety inputs and four dual-channel bipolar solid-state safety outputs, communicating via CIP Safety over the DeviceNet network.

KEY SPECS SUMMARY

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

Interfaces / Ports: One DeviceNet port, Removable screw terminal blocks

Indicators: Module status, network status, I/O status LEDs

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

Platform / Compatibility: Guard I/O, CIP Safety, DeviceNet, SmartGuard controllers

Limit: TÜV certified up to SIL 3, Performance Level e, Category 4

Lifecycle: Current product status (varies by revision)

FREQUENTLY ASKED QUESTIONS

Technical Specifications:

Q: What is the maximum current consumption of the module logic from the communication power supply?

A: The current consumption for the module logic is a maximum of 85 mA at 24V DC.

Wiring & Installation:

Q: What is the recommended wire size for the module's removable screw terminal connections?

A: Use 0.34 to 1.5 mm2 (22 to 16 AWG) solid or stranded copper wire.

Troubleshooting & Compatibility:

Q: What are the integrated diagnostic capabilities for the safety output circuits on this module?

A: Outputs include integrated pulse testing and fault detection for short-circuit to 24V DC or 0V and wire breakage.

Replacement & Upgrades:

Q: Are there compatible safety I/O modules for EtherNet/IP networks that share similar functionality?

A: The 1791ES-IB8XOBV4 module is the functionally similar equivalent for EtherNet/IP networks.