Allen‑Bradley 1794‑OA8I Flex I/O Output Module 120V AC 8 Isolated

1794-OA8I Flex I/O Digital Output Module – Product Overview

The 1794-OA8I is an AC digital output module from the Allen‑Bradley Flex I/O family. It provides 8 isolated outputs for 120V AC loads. Each output supports up to 4.0A total current (500mA per channel). This module directly connects actuators to the controller logic. It mounts on a terminal base (keyswitch position 8). Compatible bases include 1794‑TB3S, 1794‑TB2, 1794‑TB3, 1794‑TBN, and 1794‑TBNF. Wiring is simple: even terminals connect to the output; odd terminals receive 120V AC power. Each isolated output uses a separate common connection. The yellow LED on the field side indicates an active output. This module is built for rugged industrial environments.

Technical Specifications

Installation, Compatibility & Diagnostics

• Mounting: Insert into terminal base with keyswitch at position 8. Use 1794‑TB3S, TB2, TB3, TBN, or TBNF bases.
• Wiring: Connect even terminals for output signals; odd terminals for 120V AC power. Isolated commons require separate connections to each load.
• Diagnostic LEDs: Yellow LED per channel for active output status – quick visual check.
• Compatibility: Works with all Flex I/O adapters and controllers supporting 1794 backplane.
• Certifications: UL, CSA, CE marked for global industrial use.
• Environmental: 5‑95% non‑condensing humidity; vibration & shock resistant per IEC standards.

Typical Applications

• AC solenoid and relay control
• Motor starter and contactor actuation
• Indicator lamp and alarm circuits
• Packaging machinery and conveyor systems
• HVAC equipment and batch process control

Why Buy From Oiltech Controls?

• Over 15 years of focused expertise in industrial automation spares.
• Global shipping – we deliver to your site, wherever that is.
• We offer thoroughly tested surplus and refurbished options.
• Every unit passes a technical verification before shipment.
• 12‑month warranty gives you peace of mind.
• We support obsolete control systems – including legacy Modicon Quantum and others.

Shipping, Warranty & Contact

Shipping: We ship worldwide via FedEx, UPS, or DHL – tracking provided.

Warranty: 12 months against defects in materials and workmanship.

Package includes: 1794‑OA8I module, installation instructions (digital), and terminal base keying pins.

Need help? Contact us at info@oiltechcontrols.com or +86 158 8020 0923 (WhatsApp).

Frequently Asked Questions

• Can this module drive 2A loads? Yes, each output handles up to 500mA; total current 4.0A shared across 8 channels.
• What fuse rating should I use? Use 1.6A, 250V AC slow‑blow fuse per output for protection.
• Is the module isolated? Yes, 120V continuous isolation channel‑to‑channel and field‑to‑backplane.
• Does it support AC or DC? It supports 120V AC output only.
• How do I verify output status? The yellow LED on the field side turns on when the output is active.