Allen-Bradley 1794-OB8EPXT | Robust Digital Output Module for Extreme Environments

Overview

The Allen-Bradley 1794-OB8EPXT is an 8-point digital output module designed for the FLEX I/O-XT system. It provides 24V DC sourcing outputs with electronic protection and is conformally coated for enhanced durability. The module operates in a wide temperature range, making it suitable for harsh industrial environments.

Key Features

• Output Channels: 8 sourcing (PNP) outputs

• Output Voltage Range: 10–31.2V DC

• Nominal Output Voltage: 24V DC

• Output Current:

  • Maximum per channel: 2 A

  • Maximum per module: 10 A

• On-State Voltage Drop: Maximum 0.5V DC

• Off-State Leakage Current: Maximum 0.5 mA

• Surge Current: 2 A for 50 ms, repeatable every 2 seconds

• Isolation Voltage: 50V (continuous), basic insulation

• FlexBus Current: 80 mA @ 5V DC

• Power Dissipation: Maximum 5.3 W @ 32.1V DC

• Thermal Dissipation: Maximum 18.1 BTU/hr @ 31.2V DC

• Mounting: DIN rail

• Enclosure Type: Open-style

• Operating Temperature: -20 to +70°C (-4 to +158°F)

• Certifications: CE, UL, cULus, ATEX, IECEx, RCM, KC, CCC

Technical Specifications

• Catalog Number: 1794-OB8EPXT

• Dimensions (H x W x D): 46.3 x 53.0 x 94.0 mm

• Weight: Approximately 0.13 kg

• Recommended Terminal Base Units: 1794-TB3G, 1794-TB3GS

• Wiring Category: 2 – on signal ports

• Wire Size: Determined by installed terminal base

• Terminal Base Screw Torque: Determined by installed terminal base

• Keyswitch Position: 4

• Indicators: 8 yellow status indicators (one per channel)

Applications

• Industrial Automation Systems

• Process Control Systems

• Material Handling Equipment

• Packaging Machinery

• Machine Control

Why Choose the 1794-OB8EPXT?

• High-Density Output: 8 channels in a single module

• Extended Temperature Range: Operates from -20 to +70°C

• Enhanced Protection: Electronically protected outputs with fault status feedback

• Conformal Coating: Provides resistance to moisture and contaminants

• Flexible Integration: Compatible with various FLEX I/O adapters

• Reliable Performance: Designed for demanding industrial environments

• Ease of Maintenance: LED indicators for each channel facilitate troubleshooting

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Available and ready to ship globally.