ALLEN BRADLEY 1794-OB16 Digital Output Module

Allen-Bradley 1794-OB16 – Flex I/O DC Output Module

The Allen-Bradley 1794-OB16 is a Flex I/O Digital DC Output Module designed for industrial automation applications. It provides 16 sourcing DC output channels, making it ideal for precise control of external devices in manufacturing and process automation systems.

1. General Information

• Manufacturer: Rockwell Automation
• Brand: Allen-Bradley
• Model Number: 1794-OB16
• Product Type: Flex I/O Digital DC Output Module
• Series: Flex I/O
• Mounting Type: DIN Rail

2. Electrical Specifications

Output Configuration

• Total Outputs: 16 Sourcing Outputs
• Output Current Rating: 8.0A Total (Max 500mA per Channel)
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Voltage Ratings

• Nominal On-State Voltage: 24V DC
• Minimum On-State Voltage: 10V DC
• Maximum On-State Voltage: 31.2V DC
• Maximum On-State Voltage Drop: 0.5V DC
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Current Ratings

• Maximum On-State Current: 500mA per Channel
• Maximum Off-State Leakage Current: 0.5mA
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Power & Isolation

• Flexbus Current Draw: 80mA @ 5V DC
• Isolation Voltage: 50V Continuous

3. Environmental & Physical Specifications

Temperature & Shock Ratings

• Operating Temperature: 0°C to 55°C (32°F to 131°F)
• Storage Temperature: -40°C to 85°C (-40°F to 185°F)
• Operating Shock: 30g
• Vibration Resistance: 5g @ 10 to 500 Hz
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Power & Heat Dissipation

• Power Dissipation: 5.3W @ 31.2V DC Max
• Thermal Dissipation: 18.1 BTU/hr @ 31.2V DC Max
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Enclosure & Wiring

• Enclosure Type: Open-type
• Terminal Base Compatibility:
  • 1794-TB2
  • 1794-TB3
  • 1794-TB3S
  • 1794-TB3K
  • 1794-TB3SK
• Wire Size: Determined by the installed terminal base
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Indicators & Diagnostics

• Status Indicators: 16 Yellow LED Status Indicators
• Keyswitch Position: 2

4. Features & Benefits

✅ Compact and Modular – Fits into a Flex I/O system with easy expansion
✅ Fast Response Time – Ensures real-time control of connected devices
✅ 16 Individual Output Channels – Ideal for high-channel count applications
✅ Wide Operating Voltage Range – Supports 10V to 31.2V DC
✅ Efficient Power Management – Low power dissipation for energy savings
✅ Reliable Performance – Designed for harsh industrial environments

5. Applications

The Allen-Bradley 1794-OB16 is widely used in:
Manufacturing Automation – Controlling solenoids, valves, and actuators
Process Control – Regulating industrial automation processes
Factory Automation – Managing high-speed machine operations
Material Handling Systems – Enhancing conveyor and sorting systems
Power Plants & Utility Systems – Automating electrical switching systems

6. Summary

The Allen-Bradley 1794-OB16 Flex I/O DC Output Module is an efficient, high-performance digital output module designed for flexible industrial automation applications. With 16 sourcing outputs, compact design, and robust environmental resistance, it is an excellent choice for control system integrators.