Description

The Allen-Bradley 1794-OM8 is a high-performance 8-point digital AC output module designed for the FLEX I/O distributed system. This module provides a reliable interface between PLC/PAC control logic and high-voltage AC field devices, such as actuators, solenoids, and alarm indicators. Engineered for space-efficient industrial applications, the 1794-OM8 allows for seamless integration into distributed control architectures, supporting a nominal output voltage of 240V AC.

Features

• 8-Point Discrete Output Configuration
• High-Voltage AC Switching (159V to 264V AC range)
• Modular FLEX I/O Architecture for flexible system design
• Zero-Cross Switching Technology to reduce electrical noise
• Hot-swappable design when used with compatible terminal bases

Applications

• Packaging and bottling line control
• Assembly automation systems
• Fluid handling and chemical dosing systems
• Industrial HVAC control machinery
• Remote I/O distributed control nodes

Technical Specifications

Installation Guidelines

• Mounting: Secure the compatible FLEX I/O terminal base onto a 35 x 7.5mm DIN rail.
• Keyswitch: Set the keyswitch on the terminal base to position 8 to ensure mechanical compatibility with the 1794-OM8 module.
• Module Insertion: Align the module with the terminal base slots, ensuring pins are straight, and press firmly until the latching mechanism clicks into place.
• Wiring: Ensure all field power is disconnected before installing or removing the module. Use appropriate wire gauges for the terminal base connections.
• Environment: Ensure adequate ventilation for heat dissipation; avoid mounting near high-EMI sources or extreme heat zones.

FAQ

What is the primary function of the 1794-OM8?

The 1794-OM8 is a digital output module used to interface a FLEX I/O system with 240V AC field devices, allowing the controller to switch high-voltage loads.

Is this module hot-swappable?

Yes, the FLEX I/O architecture allows for the electronic module to be removed and replaced while the system is powered, provided it is mounted on a compatible, pre-wired terminal base.

What is the maximum current capacity?

The module supports a maximum of 500 mA per output, with a total module current limit of 4.0 A.