Features:
- Directly switches industrial AC loads (contactors, solenoids, pilot lights) without external interposing relays; silent, wear‑free switching.
- This compact footprint is achieved by the FLEX I/O system’s modular design, which separates the I/O module from the terminal base.
- Operating temperature 0-55°C, storage -40-85°C, humidity 95% non-condensing; suitable for demanding factory environments.
The 1794-OM8 provides eight triac-based outputs specifically designed for switching 220V AC loads at 50 Hz. Triacs are semiconductor devices that turn on and off with zero-crossing detection, reducing electrical noise and contact wear. Unlike mechanical relays, triacs have no moving parts, making them ideal for applications requiring frequent switching – such as controlling solenoid valves in packaging machines, cycling pilot lights on control panels, or operating small contactors motor starters.
This compact footprint is achieved by the FLEX I/O system’s modular design, which separates the I/O module from the terminal base. The module itself contains only the electronics; the field wiring connections are made on the terminal base (ordered separately). This allows the 1794-OM8 to be replaced without disconnecting field wires, reducing downtime during maintenance. The low profile (45.7 mm) allows mounting in shallow enclosures. The FLEX I/O system supports up to eight modules per I/O rack, providing dense I/O count in a small area.
The 1794-OM8 is built to withstand typical industrial conditions. It operates reliably in ambient temperatures from 0°C to 55°C (32°F to 131°F), covering most unairconditioned control rooms and factory floors. For storage or transportation, it withstands -40°C to 85°C (-40°F to 185°F), allowing the module to be kept in warehouses or shipped without damage. The humidity rating is 95% non-condensing, meaning the module can be installed in high-moisture environments such as pulp and paper mills, food processing plants, or outdoor enclosures – as long as condensation does not occur. The module has an open-style enclosure (IP20) and must be installed inside a suitable cabinet. The 1794-OM8 is not suitable for safety functions (no SIL/PL rating) and should not be used in emergency stop circuits or safety interlocks.
The 1794-OM8 Allen-Bradley I/O Digital Output Module may still be available for purchase and support from Apter Power beyond
End-Of-Life (EOL)by the manufacturer (OEM).
Allen-Bradley 1794-OM8 I/O Digital Output Module Manuals, Datasheets,Drivers,Link
Important Notice:Other accessories,manuals,cables,calibration data,software,etc.are not included with this equipment unless listed in the above stock item description.All prices are shown in USD.
Allen-Bradley 1794-OM8 I/O Digital Output Module Specs
General
- Manufacturer Allen-Bradley
- Model 1794-OM8
- Condition New Original ready stock
- Product Family
1794-OM16,1794-OB8,1794-OB16
Important Notice:Other accessories,manuals,cables,calibration data,software,etc.are not
included with this equipment unless listed in the above stock item description.All prices are
shown in USD.
- AC Load Control: Directly drives small AC motor starters, AC solenoid valves, contactor coils, and various AC indicator lights.
- Power and Facility Automation: Commonly used in building automation or power distribution systems to handle discrete control signals up to 120V AC.
- Remote I/O Stations: Provides localized AC power output capabilities remotely from the main control cabinet via the FLEX I/O platform, reducing the need for long-distance high-power AC cable laying.
- Safety Certifications: UL Listed (USA) and CSA Certified (Canada) certified.
- Electromagnetic Compatibility and Compliance: CE marked, compliant with the EU Electromagnetic Compatibility (EMC) Directive and Low Voltage Directive; also C-Tick (Australia) certified.
- Environmental Compliance: RoHS compliant, restricting the use of hazardous substances.
- Hazardous Locations: Approved for use in Class I, Division 2, Groups A, B, C, and D hazardous environments.
- Dock Compatibility: Requires specific FLEX I/O terminal blocks. A three-wire dock (e.g., 1794-TBN or 1794-TB3) is recommended to simplify L2/Neutral wiring.
- System Compatibility: Fully compatible with Allen-Bradley's full range of controllers (e.g., ControlLogix, CompactLogix, PLC-5, and SLC 500) and easily configured in Studio 5000 or RSLogix 500 software.
- Hot-swappable (RIUP): Supports replacement without interrupting system operation, which is consistent with other FLEX I/O modules.