Description

Brief Product Description

The Allen-Bradley 1769-OB32 is a high-density digital I/O expansion module providing 32 sourcing DC outputs for CompactLogix and MicroLogix 1500 controllers. This module optimizes cabinet space by managing a high volume of discrete control signals with localized isolation and rapid switching performance.

High-Density Output Control for Compact Architectures

The 1769-OB32 acts as a primary control interface for discrete field devices within the Allen-Bradley CompactLogix and MicroLogix 1500 families. By offering 32 individual sourcing points, this module significantly reduces the hardware footprint required for complex machinery automation. The hardware organizes these points into two isolated groups of 16, which allows engineers to manage different power circuits or safety zones within a single module. Consequently, this high-density configuration provides a cost-effective solution for applications involving extensive solenoid, relay, or indicator light arrays.

Precision Performance and Electrical Integrity

Reliability drives the design of the 1769-OB32, which operates within a standard 24V DC industrial power range. Every output channel supports up to 0.5A of current, facilitating the direct drive of most industrial actuators. Furthermore, the module utilizes solid-state switching technology to achieve an ON delay of just 0.5ms, ensuring that time-critical logic executes with minimal lag. To maintain electrical safety, the module incorporates reinforced insulation between the backplane and the I/O channels, protecting the central processor from field-side electrical surges or noise interference.

Seamless System Integration and Installation

Engineers can easily integrate the 1769-OB32 into existing control racks thanks to its tongue-and-groove locking system, which ensures a secure mechanical and electronic connection to the 1769 bus. Because the module has a power supply distance rating of eight (notably supporting up to eight modules from the power source), it provides significant flexibility in rack layout. The unit also features front-facing LED status indicators for each channel, which streamlines the troubleshooting process by providing immediate visual confirmation of output states. This combination of robust physical construction and intelligent diagnostics makes the 1769-OB32 a standard choice for demanding manufacturing environments.

Key Technical Characteristics

• High-Density Architecture: 32 sourcing DC outputs packed into a compact 35mm wide module.
• Group Isolation: Two isolated groups of 16 channels facilitate diverse power distribution.
• Rapid Signal Response: Features a 0.5ms ON delay and 4.0ms OFF delay for precision timing.
• Flexible Wiring Options: Supports both solid and stranded copper conductors between 14 and 22 AWG.
• Thermal Efficiency: Operates in environments up to 60°C with an effective heat dissipation of 4.5W.
• Bus Synchronization: Compatible with CompactLogix controllers and MicroLogix 1500 expansion racks.

Technical Specifications