Genuine PLC 1794-OA8 Allen-Bradley FLEX I/O - Industrial Automation Part

Allen-Bradley 1794-OA8 Digital Output Module | FLEX I/O

Description

Allen-Bradley 1794-OA8 AC Digital Output Module – FLEX I/O Series

When a digital output module fails on the production floor, the consequences are immediate and costly: conveyor lines halt, actuators freeze, and entire manufacturing cells go dark. Operators scramble, maintenance teams race against downtime clocks, and every minute of lost production compounds the financial damage. The Allen-Bradley 1794-OA8 is the precision component that stands between your process and that scenario — a purpose-built 8-point AC digital output module engineered for the demands of continuous industrial operation.

Within the Rockwell Automation FLEX I/O platform, the 1794-OA8 occupies a critical mid-range position: it delivers eight independently controlled 120/240V AC output channels in a compact, DIN-rail-mounted form factor that integrates seamlessly into both legacy and modern control architectures. Globally, FLEX I/O remains one of the most widely deployed distributed I/O systems in discrete and process manufacturing, making the 1794-OA8 one of the most sought-after replacement and expansion modules in the industrial automation market.

Technical Specifications

Part Number: 1794-OA8
Series: Allen-Bradley FLEX I/O
Output Type: AC Digital Output (Triac)
Number of Output Points: 8
Output Voltage Range: 74–265V AC
Output Current per Point: 0.5A continuous
Surge Current: 7A for 0.1s (one cycle)
Off-State Leakage Current: ≤ 2.5 mA
On-State Voltage Drop: ≤ 1.5V RMS
Operating Frequency: 47–63 Hz
Backplane Current (5V DC): 75 mA
Operating Temperature: 0°C to 55°C (32°F to 131°F)
Storage Temperature: -40°C to 85°C
Relative Humidity: 5–95% non-condensing
Dimensions (H × W × D): 94 × 23 × 87 mm (3.70 × 0.91 × 3.43 in)
Weight: Approx. 200 g
Certifications: UL, CE, CSA
Communication: Via FLEX I/O adapter (1794-AENT, 1794-ACN15, etc.)

Key Features & Benefits

8 Independent AC Output Channels: Control up to 8 separate AC loads simultaneously with individual channel isolation, reducing wiring complexity and panel footprint.
Wide Voltage Compatibility: Operates across 74–265V AC, making it suitable for both 120V and 240V AC field devices without hardware changes.
Triac Solid-State Switching: No mechanical contacts means zero contact wear, silent operation, and switching speeds far exceeding electromechanical relays.
Compact FLEX I/O Form Factor: 23mm-wide module slots directly onto the FLEX I/O terminal base, maximizing cabinet density in space-constrained installations.
Hot-Swap Capable: Modules can be replaced under power (with appropriate adapter configuration), minimizing planned maintenance downtime.
Diagnostic Feedback: Integrates with Logix-based controllers to provide real-time output status and fault detection via the backplane.
Broad Certification Coverage: UL, CE, and CSA listings support deployment in North American, European, and international facilities.

Industry & Equipment Applications

Automotive Manufacturing: Controlling solenoid valves, pilot lights, and motor starters on assembly and paint lines.
Food & Beverage Processing: Actuating conveyor drives, filling station solenoids, and CIP (clean-in-place) valve banks.
Water & Wastewater Treatment: Switching pump contactors, aerator drives, and chemical dosing actuators in wet environments.
Oil & Gas: Remote actuation of field devices in distributed control architectures across pipeline and refinery operations.
Pharmaceutical & Life Sciences: Precise output control in validated batch processing and packaging lines.
Material Handling & Logistics: Controlling sorter diverters, conveyor zones, and gate actuators in distribution centers.

System Integration & Compatible Parts

The 1794-OA8 is designed to work within the complete Allen-Bradley FLEX I/O ecosystem. Compatible and commonly paired components include:

Terminal Bases: 1794-TB3, 1794-TB3S, 1794-TB32 (required for module mounting)
Communication Adapters: 1794-AENT (EtherNet/IP), 1794-ACN15 (ControlNet), 1794-ADN (DeviceNet), 1794-APB (PROFIBUS)
Complementary I/O Modules: 1794-IA8 (AC Digital Input), 1794-OW8 (Relay Output), 1794-IE8 (Analog Input)
Controllers: Compatible with ControlLogix (1756), CompactLogix (1769), and MicroLogix platforms via appropriate adapters
Programming Software: Rockwell Automation Studio 5000 Logix Designer, RSLogix 5000

Our Quality Assurance Process

Every 1794-OA8 unit sourced and shipped by Konmask.com undergoes a structured verification process before dispatch:

Authenticity Verification: Visual inspection of labeling, date codes, and manufacturer markings to confirm genuine Rockwell Automation origin.
Functional Power-On Test: Each module is bench-tested to confirm backplane communication and output channel response.
Packaging Integrity Check: Anti-static packaging, moisture barrier bags, and foam-cushioned outer cartons protect modules during international transit.
Documentation: Shipments include a test report and, where available, original manufacturer documentation.

How to Order

Submit your inquiry via the Contact Us form or email support@konmask.com with your required quantity and delivery timeline.
Our technical team will confirm availability, lead time, and provide a formal quotation within 1 business day.
Upon quote acceptance, we issue a proforma invoice and arrange payment via T/T, PayPal, or other agreed methods.
Modules are dispatched with full tracking via DHL, FedEx, or UPS Express — typical transit time 3–7 business days worldwide.

Why Choose Konmask.com?

Industrial Automation Specialists: We focus exclusively on PLC, DCS, and industrial control components — not a generalist distributor.
Global Sourcing Network: Access to genuine surplus, refurbished, and new-in-box stock from verified supply chains worldwide.
Technical Pre-Sales Support: Our engineers can assist with compatibility verification, cross-referencing, and system integration questions before you commit to a purchase.
Responsive Inquiry Handling: Quotations within 24 hours, with dedicated account management for repeat B2B customers.
Secure International Shipping: Fully insured shipments with real-time tracking and customs documentation support.

Frequently Asked Questions

Q: Is the 1794-OA8 compatible with EtherNet/IP networks?
A: Yes. When paired with the 1794-AENT EtherNet/IP adapter, the 1794-OA8 integrates fully into EtherNet/IP-based control systems including ControlLogix and CompactLogix platforms.

Q: Can the 1794-OA8 control 240V AC loads?
A: Yes. The module supports output voltages from 74V to 265V AC, making it compatible with both 120V and 240V AC field devices.

Q: What terminal base is required for the 1794-OA8?
A: The 1794-OA8 requires a compatible FLEX I/O terminal base such as the 1794-TB3, 1794-TB3S, or 1794-TB32. The terminal base is sold separately.

Q: Do you supply new-in-box or refurbished units?
A: We supply both. Please specify your preference when submitting your inquiry. All units — regardless of condition — pass our quality assurance process before shipment.

Q: What is the typical lead time for the 1794-OA8?
A: For in-stock units, we typically ship within 1–3 business days of payment confirmation. Lead times for sourced units vary; contact us for current availability.

Q: Can you provide a certificate of conformance or test report?
A: Yes. A functional test report is included with every shipment. Certificates of conformance are available upon request for qualifying orders.

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Allen-Bradley 1794-OA8 Digital Output Module | FLEX I/O