Allen-Bradley 1769-OA8 CompactLogix 8-Point AC Digital Output Module

Product Description

The 1769-OA8 (1769-OA8) is a high-performance 8-point AC discrete output module engineered for the Allen-Bradley CompactLogix and MicroLogix 1500 controller platforms. It provides a robust interface for controlling AC-powered field devices such as solenoids, motor starters, and industrial indicator lamps.

By utilizing solid-state switching technology, the 1769-OA8 (1769-OA8) offers a significantly longer operational lifespan and faster response times compared to traditional mechanical relay modules. To ensure system integrity, the module features optical isolation, which creates a physical barrier between the field-side AC voltage and the sensitive controller backplane, preventing damage from surges or electrical noise. Its modular design includes a removable terminal block, simplifying maintenance and reducing downtime during module replacement.

Detailed Technical Specifications

The following technical parameters define the operational limits and electrical characteristics of the 1769-OA8:

• Manufacturer: Allen-Bradley / Rockwell Automation

• Model Number: 1769-OA8

• Product Type: AC Digital Output Module

• Number of Outputs: 8 Channels (Non-isolated between points)

• Operating Voltage Range: 85–265V AC

• Line Frequency: 47–63 Hz

• Backplane Current Draw: 145 mA @ 5.1V DC

• Maximum Current per Point: 0.5A @ 30°C (86°F); 0.25A @ 60°C (140°F)

• Maximum Current per Module: 4.0A @ 30°C; 2.0A @ 60°C

• Surge Current: 10A for 25 ms (repeatable every 2 seconds)

• On-State Voltage Drop: ≤ 1.5V AC @ 0.5A

• Off-State Leakage Current: ≤ 2.0 mA @ 132V AC

• Minimum Load Current: 10 mA

• Signal Delay (On/Off): 9.3 ms (On) / 11 ms (Off)

• Power Dissipation: 2.15 Watts

• Isolation Voltage: 265V (continuous), reinforced insulation type

• Removable Terminal Block: 1769-RTBN18 (18-position)

• Operating Temperature: 0°C to 60°C (32°F to 140°F)