1756-OW16I Allen Bradley ControlLogix 16-Point Isolated Relay Output Module

Product Overview

The Allen Bradley 1756-OW16I delivers reliable contact switching for critical industrial control applications. This high-performance module isolates each digital output channel to protect system logic from field-side electrical hazards.

Technical Specifications

The table below breaks down the technical hardware attributes for the 1756-OW16I digital output assembly:

Functional Description of the ControlLogix 1756-OW16I Module

The 1756-OW16I module executes discrete control commands by opening or closing its internal electromagnetic relays. Because it provides individual channel-to-channel isolation, users can easily mix different voltage sources on a single module.

Consequently, this configuration eliminates the need for external interposing relays, reducing cabinet footprint and hardware costs. The unit supports Removal and Insertion Under Power (RIUP), allowing live module swaps during active runtime.

Furthermore, advanced producer-consumer communications ensure high-speed data transmission across the ControlLogix backplane. Onboard logic circuits enable comprehensive fault reporting and per-point time-stamping for precise event sequence tracking. Technicians can perform fast diagnostic operations via the dedicated per-channel LED status window.

Industrial Applications and System Integration

• Mixed-Voltage Actuator Networks: Controls mixed AC and DC pilot lights, solenoid valves, and motor starters simultaneously.
• Emergency Interlocking Systems: Manages isolated trip loops inside complex machine safeguarding circuits.
• Hazardous Environment Deployment: Operates securely within Class I Division 2 certified chemical and oil processing plants.
• Water Treatment Control Infrastructure: Interfaces seamlessly with remote water pump stations requiring independent line isolation.
• Power Grid Distribution Automation: Handles breaker trip signaling loops in high-noise electrical substations.

Installation and Compliance Matrix

To connect field wiring, the module requires a separately purchased 36-pin Removable Terminal Block (RTB) housing. System engineers should always reference the latest Rockwell Automation Technical Publications to verify proper fuse sizing and loading rules.

Additionally, users must establish safe routing paths to segregate signal wiring from high-power supply bus ducts. To review matching terminal accessories or explore chassis power supplies, examine our detailed Allen Bradley ControlLogix System Selection Guide to finalize your controller hardware assembly.

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