1794-OM8 Allen Bradley | FLEX I/O 220V AC Digital Output Module

Product Overview

The Allen Bradley 1794-OM8 serves as a high-performance discrete output component within the FLEX I/O family. This module interfaces the controller with high-voltage AC field devices, providing 8 isolated points to switch actuators, motor starters, and solenoids. We supply this module as 100% Brand New and Factory Original, ensuring the internal triac circuitry meets the highest industrial standards for longevity and switching precision in distributed control architectures.

Technical Specifications

The 1794-OM8 converts digital logic signals into 220V AC power switching via the following technical parameters:

Engineering Advantages

• Modular Distributed Architecture: The 1794-OM8 plugs into a terminal base, separating the wiring from the I/O electronics. This design allows technicians to replace the module without disturbing field wiring, drastically reducing Mean Time to Repair (MTTR) during plant maintenance.

• Space-Saving DIN-Mount Profile: The compact "Open Style" chassis minimizes panel footprint. By utilizing the FLEX I/O system, engineers consolidate high-voltage AC switching into tight enclosures where traditional rack-based PLCs cannot fit.

• Robust 220V AC Switching: The integrated triac outputs handle a broad voltage range up to 264V AC. This resilience ensures stable operation in regions with fluctuating power grids or in heavy industrial zones where inductive loads cause significant line noise.

• Passive Cooling Design: The module utilizes an efficient thermal layout that dissipates heat without the need for active fans. This reduces the risk of failure in dust-prone environments and allows for dense module packing on a single DIN rail.

FAQs

• Is this 1794-OM8 unit genuinely brand new?

  Yes. We guarantee this unit is 100% Brand New and ships in its original Allen Bradley factory packaging. It has never seen service, ensuring the internal electronic components have no thermal wear or previous load history.

• Which terminal base is compatible with the 1794-OM8?

  The 1794-OM8 requires a compatible FLEX I/O terminal base, such as the 1794-TB2, 1794-TB3, or 1794-TB3S. You must match the terminal base to your specific wiring requirements (screw vs. spring clamp).

• Does the module support 110V AC applications?

  While the module is optimized for 220V AC, it operates within a range of 159V to 264V AC. For standard 120V AC applications, you should use the 1794-OM16 or 1794-OA8 to ensure the gate trigger voltages remain within manufacturer specifications.

• How does the module handle inductive load spikes?

  The 1794-OM8 includes internal RC snubber circuits to suppress voltage transients. However, for highly inductive loads like large solenoids, we recommend installing external suppression across the load to further protect the module’s output triacs.