Allen-Bradley 1794-OW8XT Flex I/O 8-Channel Relay Output Module

Allen-Bradley 1794-OW8XT Flex I/O Relay Output Module

The Allen-Bradley 1794-OW8XT delivers eight isolated relay outputs for industrial control applications. This robust Flex I/O module handles high-voltage switching with reliable performance. Rockwell Automation designed this unit with special coatings for demanding industrial environments.

Relay Specifications

• Module provides eight fully isolated relay outputs with normally open contacts
• Each relay carries a 250V AC contact rating for various load types
• Low minimum contact load of 100 µA at 100 mV DC for sensitive applications
• Excellent initial contact resistance of only 30 mΩ for efficient operation
• Fast contact bounce time of 1.2 ms ensures clean switching
• Maximum switching frequency of 0.3 Hz (one operation every three seconds)

Electrical Characteristics

• Wide supply voltage range from 19.2 to 31.2V DC for flexibility
• Moderate current draw of 126 mA for power efficiency
• Flexbus operation requires standard 5V DC power for communication
• Total power dissipation of 5.5 W during normal operation
• Maximum thermal dissipation of 18.8 BTU/hour at full voltage
• Minimal off-state leakage current of 1.0 mA through snubber circuit

Mechanical & Environmental

• Compact dimensions of 94mm × 46mm × 53mm for space-saving installation
• Strong 250V continuous isolation voltage for safety protection
• Easy DIN rail mounting with zinc-plated steel components
• Advanced conformal coating protects against high temperatures and contaminants
• Proper grounding ensured through yellow-chromate finished steel parts

Frequently Asked Questions

• How many relay outputs does this module have? The 1794-OW8XT provides eight isolated relay outputs with normally open contacts.
• What is the voltage rating? Relays are rated for 250V AC operation with 250V continuous isolation.
• What special features does it include? This module features conformal coating for high-temperature durability and environmental protection.
• What is the switching capability? Each relay can switch loads as low as 100 µA and operates at up to 0.3 Hz frequency.