Allen-Bradley 1791DS-IB8XOB8 Safety I/O Module

Overview

The Allen-Bradley 1791DS-IB8XOB8 is a robust Guard I/O DeviceNet Safety I/O module, designed for high-integrity safety applications. With eight (8) safety inputs, eight (8) sourcing outputs, and four (4) test outputs, this module is a critical component for ensuring safety in industrial automation.

It supports SIL3 safety standards and complies with IEC 61508 and EN 954-1.1 regulations, making it ideal for applications that demand high reliability and fault tolerance.

With an IP20 enclosure rating, the 1791DS-IB8XOB8 module is suited for environments where protection from dust and light splashes is necessary. Its wide operating temperature range from -40°C to +70°C makes it durable in challenging industrial conditions.

Key Features

• Brand & Model: Allen-Bradley 1791DS-IB8XOB8

• Category: Guard I/O DeviceNet Safety Module

• Safety Standards: Complies with SIL3, IEC 61508, and EN 954-1.1

• Number of Inputs: 8 sinking inputs

• Number of Outputs: 8 sourcing outputs + 4 test outputs

• Rated Output Current: 0.7 A

• Operating Voltage Range: 20.4 to 26.4 VDC

• Input Type: Single-channel safety inputs

• Power Consumption: 110 mA at 24V DC

• Enclosure Rating: IP20

• Temperature Range: -40°C to +70°C

• Wire Type: Copper (0.2–2.5 mm²) or flexible wire (0.34–1.5 mm²)

• Weight: 0.94 lbs (0.43 kg)

Technical Specifications Table

Description

The Allen-Bradley 1791DS-IB8XOB8 Guard I/O DeviceNet Safety I/O module is engineered for high-performance safety systems in industrial automation.

With eight safety inputs and eight sourcing outputs, this module ensures efficient and accurate control of safety devices. Additionally, the four test outputs allow for continuous monitoring and diagnostics.

Its IP20 enclosure ensures protection against dust and light splashes, while the wide operating voltage range (20.4 to 26.4 VDC) offers flexibility in various installations.

Designed for applications that require SIL3 safety integrity, the 1791DS-IB8XOB8 module is compliant with international safety standards, such as IEC 61508 and EN 954-1.1, ensuring reliable and secure operation.

FAQ

Q1: What is the safety standard compliance for the 1791DS-IB8XOB8?
A1: The 1791DS-IB8XOB8 is SIL3 certified and complies with IEC 61508 and EN 954-1.1 standards.

Q2: How many inputs and outputs does the 1791DS-IB8XOB8 have?
A2: The 1791DS-IB8XOB8 has eight safety inputs, eight sourcing outputs, and four test outputs.

Q3: What is the operating temperature range for the 1791DS-IB8XOB8 module?
A3: The 1791DS-IB8XOB8 operates within a temperature range of -40°C to +70°C, making it suitable for challenging environments.

Q4: What is the power consumption of the 1791DS-IB8XOB8 module?
A4: The module consumes 110 mA at 24V DC, providing efficient power usage.

Q5: What wire types are compatible with the 1791DS-IB8XOB8?
A5: The module supports copper wires (0.2–2.5 mm²) or flexible wires (0.34–1.5 mm²) for reliable connection.