Product Overview

The Allen-Bradley 1769-OW8 provides robust digital switching for CompactLogix and MicroLogix 1500 controller platforms. This module features eight independent normally open (N.O.) mechanical relay contacts, offering a high-integrity interface for both AC and DC loads. By utilizing dry contact closures, the 1769-OW8 manages diverse industrial equipment ranging from motor starters and solenoid valves to legacy hardware indicators. We supply this unit as 100% Brand New original factory stock, ensuring peak contact performance and long-term mechanical life.

Technical Specifications

Engineering Advantages

• Dual-Group Circuit Isolation: The 1769-OW8 organizes its eight outputs into two isolated groups of four. This architectural separation allows engineers to control different voltage sources or phases (e.g., 120V AC on Group 1 and 24V DC on Group 2) within a single module safely and effectively.

• Broad Voltage Compatibility: Unlike solid-state modules, the mechanical contacts handle a wide spectrum from 5V to 265V AC or 125V DC. This flexibility eliminates the need for interposing relays when controlling diverse field devices, reducing both panel space and wiring complexity.

• Low On-State Resistance: The relay design provides a true "dry contact" closure with negligible voltage drop. This characteristic ensures maximum power reaches the end device, making it ideal for precision switching and legacy system integration where voltage sensitivity is a concern.

• Reinforced Safety Insulation: The module features 265V AC reinforced insulation between groups and from the group to the backplane. This robust barrier prevents field-side electrical noise and high-voltage transients from compromising the controller’s sensitive internal logic.

• High-Current Handling: Capable of supporting up to 2.5 A resistive per point, the 1769-OW8 manages heavier loads than standard transistor modules. It easily handles the inrush current requirements of larger solenoid coils and magnetic contactors.

FAQs

• Can I mix AC and DC voltages on the 1769-OW8?

  Yes, provided you use the two isolated groups correctly. You can wire one group of four for AC loads and the other group of four for DC loads. However, you must maintain the same voltage type within each specific group of four.

• What is the mechanical life expectancy of the relay contacts?

  The 1769-OW8 features high-grade mechanical relays. While life expectancy depends on the load type (inductive vs. resistive) and switching frequency, using surge suppressors on inductive loads significantly extends the contact life.

• Does this module require a specific power supply location?

  Yes. The 1769-OW8 has a power supply distance rating of 8 modules. It must reside within 8 slots of a 1769 system power supply to ensure sufficient current for the relay coils.

• Is this a genuine Allen-Bradley product?

  Absolutely. We sell the 1769-OW8 as 100% Brand New original equipment from Rockwell Automation. Each unit arrives in factory packaging with the original manufacturer seal intact.