Description
Product Name: 1794-OB16D Allen Braley I/O module
Product details:
The Allen-Bradley 1794-OB16D is a high-performance digital output module belonging to the FLEX™ I/O family. It is designed to provide diagnostic capabilities for industrial control systems, specifically offering 16 sourcing outputs with integrated fault detection.
Technical Specifications
| Feature | Specification |
| Module Type | Digital Sourcing Output Module with Diagnostics |
| Number of Outputs | 16 Channels (Non-isolated) |
| Voltage Category | 24V DC |
| Operating Voltage Range | 10V DC to 31.2V DC |
| Output Current Rating | 0.5A per channel (8A max per module) |
| Surge Current | 1.5A for 50ms, repeatable every 2 seconds |
| Power Dissipation | 4.6W @ 31.2V DC |
| Terminal Base Unit | 1794-TB3, 1794-TB3S, 1794-TB3K, 1794-TB3SK |
| Diagnostics | Short-circuit and Open-wire detection |
Key Product Advantages
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Advanced Diagnostics: The “D” in the model number signifies Diagnostics. It can detect short circuits and open loads (wire breaks), which significantly reduces troubleshooting time.
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Modular Design: As part of the FLEX I/O system, it allows you to mix and match I/O types on a single rail, saving rack space and reducing costs.
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Hot-Swappable: Supports Removal and Insertion Under Power (RIUP), allowing you to replace the module without shutting down the entire system, thus increasing uptime.
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Reduced Wiring: When paired with a communication adapter (EtherNet/IP, ControlNet, or DeviceNet), it reduces the amount of long-run wiring required back to the main PLC.
Important Considerations & Precautions
Note: Proper installation is critical to prevent hardware damage or unexpected machine behavior.
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Polarity Matters: This is a Sourcing module. Ensure your field devices are wired to the common ground, as the module provides the positive (+) voltage to the load.
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External Power: Ensure a stable 24V DC external power supply is connected to the terminal base to power the outputs.
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Environment: Adhere to the operating temperature limits (0°C to 55°C). Use an enclosure if the environment is prone to heavy dust or moisture.
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Fusing: While the module has internal electronic protection, adding external fuses for high-risk loads is a best practice to protect the backplane.
Common Applications
The 1794-OB16D is widely used in automated environments where reliability and status monitoring are paramount:
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Conveyor Systems: Controlling motors and solenoids while monitoring for broken connections.
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Manufacturing Assembly: Driving actuators and indicating lamps.
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Process Control: Managing valves in chemical or water treatment plants where a “disconnected wire” alert can prevent system failure.
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Packaging Machinery: High-speed switching for sorting and labeling tasks.
Advantages: Foxboro, OVATION, TRICONEX, Allen-Bradley, ABB, Motorola, Siemens Moore, Ge Fanuc, Woodward, Bently Nevada and other major import brands!
We have the same series of models in stock. If you don’t find the model you need, please contact us and we will provide you with an official quotation!
Colour:new Warranty: 12 months
Lead Time:3-day working day Country of origin: Sweden
Price: Please contact us Product weight:0.515kg
Shipping Port: Xiamen, China
Payment: Bank of Chicago, Bank of Singapore
Express cooperation: fedex, DHL, UPS and your express account
Service: Professional Sales provides 24 hours /7 days online service
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