Allen-Bradley 1794-OA8 Digital Output Module

The Allen-Bradley 1794-OA8 is a digital output module designed for industrial automation. It features 8 non-isolated outputs and operates at 120V AC. This module is part of the Flex I/O product line by Rockwell Automation and is suitable for use in non-hazardous and Class 1, Division 2 hazardous environments. It provides excellent diagnostic capabilities, reducing start-up time and troubleshooting efforts. The 1794-OA8 is installed directly onto various terminal base units and can handle significant power and thermal dissipation.

Technical Specifications

• Manufacturer: Rockwell Automation
• Brand: Allen-Bradley
• Part Number: 1794-OA8
• Product Type: Flex I/O Digital Output Module
• Outputs: 8 non-isolated digital outputs
• Output Voltage: 120V AC (Nominal)
• Output Current Rating: 4.0A (Maximum)
• On-state Current (Min.): 5mA per output
• On-state Voltage Drop: Max 1.0V @ 0.5A
• Off-state Leakage Current: Max 2.25mA
• FlexBus Current: 80mA @ 5V DC
• Power Dissipation: Max 4.1W @ 0.5A, 6.3W @ 0.75A, 6.3W @ 1A
• Thermal Dissipation: Max 14.0 BTU/hr @ 0.5A, 21.2 BTU/hr @ 0.75A, 21.4 BTU/hr @ 1A
• Surge Current: 7 Amps for 40 milliseconds, repeatable every 8 seconds
• Output Signal Delay: Max 1/2 cycle for both ON to OFF and OFF to ON states
• Output Voltage Range: 85 to 132 Volts AC
• Operating Temperature: Max 55°C for 500mA output, Max 35°C for 750mA output
• Isolation Voltage: 120V Continuous
• Weight: 0.24 lbs