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Allen-Bradley 1791DS-IB8XOBV4 DeviceNet Safety CompactBlock Input Module

Allen-Bradley 1791DS-IB8XOBV4 DeviceNet Safety CompactBlock Input Module

Series#: AllenBradley

Product Details

1791DS-IB8XOBV4 Allen-Bradley DeviceNet Safety CompactBlock Input Module – precision-engineered for high-integrity safety applications.
Provides 8 safety-rated digital inputs and 4 solid-state outputs (source type) for flexible machine guarding and e-stop monitoring.
Seamlessly integrates with DeviceNet networks for real-time safety data exchange and diagnostics.
Compact, modular design reduces panel space and simplifies wiring in distributed control architectures.
Rugged industrial construction rated for harsh environments, with IP20 enclosure protection.
Supports SIL 3 / Category 4 safety integrity per IEC 61508 and EN 954-1 standards.
100% Genuine and New, rigorously inspected before international dispatch.

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Specification

Datasheet (PDF)

The Allen-Bradley 1791DS-IB8XOBV4 is a DeviceNet Safety CompactBlock input module designed for distributed safety I/O in industrial automation systems. This module combines 8 safety-rated digital inputs (sink/source configurable) with 4 solid-state safety outputs, enabling efficient machine safety control and monitoring. Its DeviceNet interface supports both standard and safety-specific communication protocols, allowing seamless integration into Rockwell Automation GuardLogix or other safety controllers. The 1791DS-IB8XOBV4 is ideal for applications requiring fast response times, high reliability, and compliance with global safety standards. Each input channel features dual-channel monitoring and pulse testing for fault detection, while outputs provide short-circuit and overload protection. The module’s compact form factor (approx. 120 x 80 x 60 mm) and pluggable terminal blocks simplify installation and maintenance. It operates over a wide temperature range (-20°C to +60°C) and is compatible with DeviceNet cables up to 500 meters (thick cable) or 100 meters (thin cable). For safety configuration, use RSNetWorx for DeviceNet or Studio 5000 software. Below are the detailed technical specifications:

Parameter	Specification
Product Type	DeviceNet Safety CompactBlock I/O Module
Model	1791DS-IB8XOBV4
Number of Safety Inputs	8 (dual-channel, configurable as sink/source)
Number of Safety Outputs	4 (solid-state, source type, 0.5 A per output)
Input Voltage Range	24 V DC (nominal), 19.2 – 30 V DC
Output Voltage Range	24 V DC (nominal), 20.4 – 30 V DC
Output Current per Channel	0.5 A (continuous), 2 A (peak, 10 ms)
Total Output Current	2 A (all outputs simultaneously)
Safety Integrity Level	SIL 3 (IEC 61508), Category 4 (EN 954-1), PL e (ISO 13849-1)
Communication Protocol	DeviceNet (CIP Safety)
DeviceNet Data Rate	125, 250, or 500 kbps (selectable)
DeviceNet Node Address	0 – 63 (configurable via DIP switches)
Input Response Time	< 5 ms (typical)
Output Response Time	< 10 ms (typical)
Input Filter Time	0.5 – 25 ms (programmable)
Fault Detection	Short-circuit, overload, open-wire, cross-channel fault
Indicators	Power, Network Status, Input/Output Status, Fault (LEDs)
Power Supply	24 V DC (sensor and actuator power via DeviceNet or auxiliary)
Power Consumption	< 5 W (typical)
Isolation Voltage	500 V DC (input to system, output to system)
Enclosure Rating	IP20 (NEMA 1)
Operating Temperature	-20°C to +60°C (-4°F to +140°F)
Storage Temperature	-40°C to +85°C (-40°F to +185°F)
Humidity	5% to 95% (non-condensing)
Vibration Resistance	5 g Standard Models 10-500 Hz (per IEC 60068-2-6)
Shock Resistance	30 g (11 ms half-sine, per IEC 60068-2-27)
Dimensions (H x W x D)	120 mm x 80 mm x 60 mm (approx.)
Weight	Approx. 0.35 kg (0.77 lb)
Mounting	DIN rail (35 mm) or panel mount
Connector Type	Pluggable terminal blocks (screw-type, 12-pin for I/O, 5-pin for DeviceNet)
Wire Size	0.2 – 2.5 mm² (AWG 24-14) for I/O; 0.14 – 1.5 mm² (AWG 26-16) for DeviceNet
Certifications	CE, cULus, TÜV, ATEX (Zone 2), IECEx (Zone 2)
Software Compatibility	RSNetWorx for DeviceNet, Studio 5000, RSLogix 5000 (v20+)
Safety Configuration	Via DeviceNet safety master (e.g., GuardLogix 1756-L7xS or 1769-L3xERMS)
Maximum Cable Length (DeviceNet)	500 m (thick cable), 100 m (thin cable) Standard Models 125 kbps
Typical Applications	E-stop monitoring, light curtain interfaces, safety gate switches, two-hand control
Warranty	2 years (standard)