1769-OB32 | Allen-Bradley | Compact I/O 32-Point DC Output Module

Overview

The Allen-Bradley 1769-OB32 is a 32-point DC output module designed for the Compact I/O system, offering reliable solid-state switching for control and automation applications. It provides high-speed output performance, robust isolation, and flexible installation options for use with CompactLogix and MicroLogix 1500 controllers.

Technical Specifications

• Manufacturer: Allen-Bradley

• Model Number: 1769-OB32

• Product Type: 32-Point DC Output Module

• Output Channels: 32 sourcing outputs (16 points per group)

• Voltage Category: 24 V DC source type

• Operating Voltage Range: 20.4 V DC to 26.4 V DC

• Current Draw (5.1 V Bus): 300 mA typical

• Output Current Rating: 0.5 A per point, 8 A per module maximum (steady-state)

• Surge Current: 2.0 A for 10 ms, repeatable every 2 s

• Isolation Voltage:

• 1200 V AC for 1 s or 1697 V DC for 1 s between output point and bus

• 75 V DC continuous working voltage (IEC Class 2 reinforced insulation)

• Power Dissipation: 4.5 W maximum at rated load

• Slot Width: 1.5 modules

• Power Supply Compatibility: 1769-PA2, 1769-PB2, 1769-PA4, 1769-PB4

• Power Supply Distance Rating: Up to 6 modules from the power supply

• Wiring Type: Copper conductors, rated 90 °C (194 °F)

• Enclosure Type: Open-style module (requires protective housing)

• Mounting Options: DIN-rail or panel-mounted installation

• Dimensions (H × W × D): 118 mm × 52.5 mm × 87 mm (approx.)

• Weight: Approx. 280 g

• Replacement Terminal Block: 1769-RTBN18 (one per kit)

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

• Storage Temperature Range: −40 °C to +85 °C (−40 °F to 185 °F)

Key Features

• High-Density Design: 32 individually controlled DC output points in a single module for efficient space usage.

• Fast Response: Designed for high-speed switching in automation control applications.

• Reinforced Isolation: Meets IEC Class 2 insulation standards for safe electrical separation between circuits.

• Thermal Efficiency: Low heat generation with a maximum power dissipation of 4.5 W.

• Modular Flexibility: Fully compatible with Compact I/O power supplies and controller modules.

• Ease of Maintenance: Detachable terminal block simplifies wiring and field replacement.

Application Scenarios

• Machine automation and discrete control systems

• Material handling, packaging, and assembly line operations

• Process control requiring multiple DC output points

• Integration within CompactLogix or MicroLogix 1500 I/O configurations

FAQ

Q1: What controllers are compatible with the 1769-OB32?
It can be used with Allen-Bradley CompactLogix and MicroLogix 1500 controllers that support the 1769 Compact I/O platform.

Q2: Does the module support both sourcing and sinking outputs?
No. The 1769-OB32 provides sourcing outputs only, designed for DC loads.

Q3: What is the recommended replacement terminal block?
Use 1769-RTBN18 (one per module) for secure wiring and easy maintenance.