Product Introduction
When control systems require reliable 24VDC output switching, the Allen-Bradley 1794-OB16P Flex I/O Digital DC Output Module delivers robust performance. This module provides sixteen electronically protected current sourcing outputs, making it ideal for energizing indicator lights, solenoid valves, relay coils, and other field instruments. As part of the proven Flex I/O family, the 1794-OB16P integrates seamlessly into distributed I/O architectures, helping to reduce wiring costs and improve system flexibility.
Technical Specifications Breakdown
The 1794-OB16P offers key specifications that ensure efficient and safe operation:
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FlexBus Current: 60 mA @ 5V DC
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Power Dissipation: 5.0 W @ 31.2V DC
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Thermal Dissipation: 17.0 BTU/hr @ 31.2V DC
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On-state Voltage: min 10 VDC, nom 24 VDC, max 31.2 VDC
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Output Current Rating: 8.0 A per module, 500 mA per channel maximum
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On-state Voltage Drop: max 0.5 VDC
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Off-state Leakage Current: max 0.5 mA
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Isolation Voltage: 50V Continuous
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Operating Temperature: 0 to 55°C (32 to 131°F)
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Storage Temperature: -40 to 85°C (-40 to 185°F)
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Vibration: 5g @ 10 to 500 Hz
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Shock: 30 g operating
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Indicators: 16 yellow status LEDs
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Mounting: DIN Rail
Electronic fusing on each channel protects against overcurrent, minimizing downtime and the need for external fuses—a key cost-saving feature.
Industry Applications
The Allen-Bradley 1794-OB16P excels in applications requiring multiple discrete DC outputs. Typical uses include:
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Packaging Machinery: Controlling solenoid-operated actuators and indicator banks.
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Material Handling: Switching conveyor zone valves and warning lights.
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Process Control: Driving relay coils for pump and motor starters in batch processing.
By integrating this module into a distributed I/O network, users achieve faster commissioning and easier maintenance, directly reducing overall lifecycle costs.
Compatibility & Integration
The 1794-OB16P works with Flex I/O communication adapters supporting ControlNet, DeviceNet, PROFIBUS, and EtherNet/IP. It can be used alongside any Flex I/O module in the same assembly, enabling flexible I/O configurations. For controller integration, the module operates with Logix platforms such as ControlLogix and CompactLogix, as well as legacy PLC-5 and SLC 500 systems. Configuration is straightforward via the chosen adapter's software environment.
Maintenance & Reliability
Because each output channel is electronically fused, the Allen-Bradley 1794-OB16P significantly reduces the need for fuse replacement. Routine maintenance involves periodic inspection of status LEDs and terminal connections. The module's rugged design, with operating shock tolerance of 30g and vibration resistance of 5g, ensures reliable operation in harsh industrial environments. This durability contributes to lower total cost of ownership.
Selection Guide & Purchasing Advice
When ordering the 1794-OB16P, verify you have the correct compatible terminal base. Approved bases include 1794-TB2, 1794-TB3, 1794-TB3S, 1794-TB3K, and 1794-TB3SK. Also ensure your system provides a 24VDC supply within 10-31.2V. For a reliable source of genuine Allen-Bradley modules, consider UBEST Automation. At ubest101, we stock new and surplus industrial automation parts to support your operations.