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Module Overview – Compact Precision for Distributed Control
The Allen Bradley 1793-OB16P is a 16-point Digital Output Module from the ArmorBlock family, designed to provide high-performance discrete output control in rugged, distributed environments. Its compact and sealed design allows direct mounting on machinery, minimizing wiring complexity and control cabinet space.
This module delivers reliable 24V DC sourcing outputs, ideal for controlling solenoids, contactors, and indicator lamps. Built for on-machine applications, it enhances operational efficiency by integrating control directly at the field level while maintaining robust communication with higher-level controllers through DeviceNet or other supported networks.
⚙️ Technical Details and Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Allen Bradley / Rockwell Automation |
| Product Family | ArmorBlock I/O |
| Module Type | 16-Point Digital Output (Sourcing) |
| Catalog Number | 1793-OB16P |
| Output Type | Sourcing (PNP) |
| Number of Outputs | 16 |
| Output Voltage Range | 10–31.2V DC |
| Nominal Output Voltage | 24V DC |
| Output Current (per point) | 0.5 A max |
| Output Current (per module) | 8 A max total |
| Isolation Voltage | 50V (continuous), field-to-system |
| Signal Delay (ON/OFF) | <1 ms typical |
| Power Supply | 24V DC (10–28.8V DC operating range) |
| Current Draw | 150 mA max at 24V DC |
| Diagnostics | Short-circuit and overcurrent detection |
| Connection Type | M12 Quick-Disconnect connectors |
| Enclosure Rating | IP67 (Dust-tight, water-resistant) |
| Mounting Type | Direct machine mount |
| Operating Temperature | -20°C to +60°C (-4°F to +140°F) |
| Storage Temperature | -40°C to +85°C (-40°F to +185°F) |
| Relative Humidity | 5% to 95%, non-condensing |
| Dimensions (H × W × D) | 174 mm × 60 mm × 36 mm (6.85 in × 2.36 in × 1.42 in) |
| Weight | 0.42 kg (0.93 lb) |
| Certifications | CE, UL, C-UL, and Class I, Div 2 certified |
Industrial Use and Application Scenarios
The 1793-OB16P is purpose-built for decentralized I/O systems in environments where space and durability are critical. It supports modular machine architectures and can be placed near sensors and actuators for optimal signal integrity.
Typical uses include:
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Material handling systems — controlling conveyors, diverters, and actuators.
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Packaging machinery — operating solenoid valves and indicator stacks.
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Automotive assembly lines — managing tooling outputs and process actuators.
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Food and beverage automation — designed to withstand washdown areas.
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Robotics systems — simplifying wiring and reducing control panel complexity.
Engineering Advantages and Design Insights
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Rugged IP67 Construction: Ensures protection against dust, moisture, and vibration.
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Plug-and-Play Wiring: M12 connectors reduce installation time and errors.
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Compact Footprint: Enables machine-level mounting with minimal space usage.
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Integrated Diagnostics: LED indicators for easy status and fault monitoring.
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Scalable Architecture: Easily expandable for larger distributed systems.
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Reduced Downtime: Field-replaceable design allows quick maintenance.
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High-Speed Response: Ideal for time-critical control functions.
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DeviceNet/ArmorBlock Integration: Simplifies networked I/O configuration.
