1794-OV16 Allen-Bradley FLEX I/O 16-Point Digital Sinking Output Module

Product Overview

• The 1794-OV16 is a high-density 16-point digital output module.
• It is a key component of the FLEX I/O 1794 series for distributed control.
• This 1794-OV16 unit utilizes current-sinking logic for 24V DC applications.
• Features "Removal and Insertion Under Power" (RIUP) for maximum system availability.
• The compact 1794-OV16 design reduces panel space and simplifies field wiring.

Technical Specifications

• Brand: Allen-Bradley / Rockwell Automation
• Model: 1794-OV16
• Series: FLEX I/O 1794
• Output Count: 16 Sinking Outputs
• Nominal Voltage: 24V DC (Range: 10V to 31.2V DC)
• Current Rating: 500mA per channel; 8.0A total module maximum
• Voltage Drop: Ultra-low 0.2V DC on-state maximum
• Leakage Current: 0.5mA maximum off-state leakage
• Switching Speed: 0.5ms (Off-to-On) / 1.0ms (On-to-Off)
• Bus Current: 80mA Flexbus current draw
• Thermal Load: 14.3 BTU/hr maximum heat dissipation
• Mounting: DIN-Rail mounted via compatible terminal base (e.g., 1794-TB3)

Global PLC Spare HUB’s Insight

• The 1794-OV16 is prized for its maintenance-friendly modular architecture.
• RIUP functionality ensures that replacing a 1794-OV16 does not interrupt other I/O on the same adapter.
• It provides a very stable 24V output with minimal internal voltage loss.
• Ideal for high-vibration industrial environments when used with proper DIN-rail hardware.

Target Equipment & Application Scenarios

• Valve Control: Driving 24V DC solenoid banks in pneumatic systems.
• Visual Alerts: Controlling multi-color stack lights and industrial buzzers.
• Relay Isolation: Interfacing PLC logic with high-power mechanical contractors.
• Process Packaging: Discrete output control for fillers, cappers, and labelers.
• Assembly Lines: Managing sensor-triggered actuators in automotive manufacturing.

Diagnostic & Maintenance Features

• Status LEDs: 16 individual yellow LEDs for real-time output signal tracking.
• Modular Swap: The 1794-OV16 detaches from the wiring base without touching field wires.
• Power Diagnostics: Easy troubleshooting of external 24V supply issues via module indicators.
• Robust Build: IP20 protection and wide operating temperature range for plant-floor use.

Shipping and Purchase Terms

• Express Logistics: Worldwide shipping via FedEx, UPS, and DHL Express.
• Fast Dispatch: Orders are typically processed and shipped within 24-48 hours.
• Service Guarantee: Includes a full 12-month quality warranty.
• Package List: One (1) 1794-OV16 module; terminal base not included.

Frequently Asked Questions (FAQ)

• Does the 1794-OV16 provide short-circuit protection? While robust, we recommend adding external fusing to the common supply line to protect against major field wiring shorts.
• Which terminal bases are compatible with the 1794-OV16? The 1794-TB3 and 1794-TB3S are the primary compatible bases for this 16-point module.
• Can I use this module for high-speed pulse output? With a combined delay of 1.5ms, it is suitable for general discrete control but not for high-precision motion synchronization.
• What happens if I exceed the 8.0A module current limit? Exceeding the total current limit causes excessive thermal dissipation, which may trigger a thermal shutdown or damage the module.
• Selection Guide: Why choose 1794-OV16 over a sourcing module? Choose the 1794-OV16 if your field actuators are pre-wired with a common positive (+) rail and require a negative (-) trigger.

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