Product Details
Overview
The Allen-Bradley 1794-OB16P is a FLEX I/O digital DC output module designed to provide 16 independent current sourcing channels for modular automation systems. It ensures reliable DC load control, fast response, and seamless integration with multiple terminal bases. Built for durability, it supports precise actuation in industrial environments and distributed control networks.
Technical Specifications
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Number of Outputs: 16, current sourcing
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Output Voltage: 10 V DC min, 24 V DC nominal, 31.2 V DC max
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Output Current Rating: 8 A total (16 outputs @ 0.5 A each)
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On-State Current Range: 1 mA to 500 mA per channel
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Voltage Drop: Max 0.5 V DC
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Surge Current: 2 A for 50 ms, repeatable every 2 seconds
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Off-State Leakage Current: Max 0.5 mA per channel
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Isolation Voltage: 50 V continuous (Basic Insulation), tested at 850 V DC for 1 s
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Channel Isolation: No isolation between individual channels
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Signal Delay: Off to On 0.5 ms, On to Off 1.0 ms
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FlexBus Current: 80 mA @ 5 V DC
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Max Power Dissipation: 5.3 W @ 31.2 V DC
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Thermal Dissipation: 18.1 BTU/hr @ 31.2 V DC
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Terminal Base Compatibility: 1794-TB2, 1794-TB3, 1794-TB3S, 1794-TB3K, 1794-TB3SK
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Fusing: Outputs are not internally fused; external fusing recommended using SAN-0 MQ4-800mA
Applications
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Driving actuators, solenoids, and other DC-powered devices in distributed control systems
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High-density modular FLEX I/O networks requiring precise and reliable DC output
FAQ
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Q: Can the 1794-OB16P handle high-current loads?
A: Yes, total module output 8 A, individual outputs up to 500 mA -
Q: Are the outputs fused?
A: No, external fusing such as SAN-0 MQ4-800mA is recommended -
Q: Which terminal bases are compatible?
A: 1794-TB2, 1794-TB3, 1794-TB3S, 1794-TB3K, 1794-TB3SK
Additional Information
- 100% Genuine Parts: All products are original and authentic, ensuring reliable industrial performance.
- 30-Day Refund Guarantee: Return any in-stock item within 30 days in original, unopened packaging for a full refund (excluding shipping and fees).
- 12-Month Warranty: Covers defects in materials or workmanship; excludes misuse, normal wear, or unauthorized modifications.
- Worldwide Shipping: We ship via USPS, UPS, FedEx, and DHL. Delivery times vary by country and may be subject to customs or import fees.
- Support & Contact: Technical and warranty assistance is available anytime. Contact us here: Contact.
- Purchase Guidance: Check product specifications and compatibility carefully before ordering to ensure proper application.
Tech & Buying Guide
Why Programmable Logic Controllers Drop into Stop Mode: An Expert Analysis
Industrial automation systems rely heavily on Programmable Logic Controllers (PLCs) to maintain uninterrupted production. When a PLC unexpectedly shifts from Run to Stop mode, whole manufacturing lines stall.
As control systems evolve across modern factory automation, understanding the root causes of these interruptions helps engineers minimize costly downtime. This technical guide breaks down why PLCs trip into Stop mode and provides practical strategies to mitigate system faults.
Understanding Root Causes of Unplanned PLC Stop Mode in Industrial Automation
Modern Programmable Logic Controllers manage execution through distinct operational states: Run, Stop, Start-Up, and Hold. During power-up, a controller initializes memory registers within Stop mode before briefly transitioning to Start-Up mode. During this phase, internal self-diagnostics evaluate system integrity across hardware and user programs. If the controller detects no critical faults, it enters Run mode to execute the control program continuously. However, any severe system anomaly forces the CPU back into Stop mode immediately to prevent erratic machine behavior across the plant floor.
Human-Machine Interface Design: Essential Guide to HMI Selection, Visualization, and Control System Integration
Human-Machine Interfaces (HMIs) serve as the primary operational window into complex industrial automation systems. Modern HMIs convert raw machine data into clear graphical displays, enabling operators to oversee entire manufacturing processes in real time. Instead of relying on physical control panels full of hardwired switches, engineers program interactive screens using intuitive graphics, dynamic color coding, and responsive touch interfaces. Over my 15 years in control systems engineering, I have observed HMIs transform from basic display screens into sophisticated command centers that drive operational efficiency across DCS and PLC environments.