The Allen-Bradley 1769-OB32 is a high-density 32-point DC sourcing output module for CompactLogix and MicroLogix 1500 systems. It delivers reliable 24V DC control for actuators and solenoids in a space-saving 1769 Compact I/O form factor.
The Allen-Bradley 1769-OB32 functions as a high-density digital output solution for industrial automation systems, specifically supporting the CompactLogix and MicroLogix 1500 controller platforms. This module provides 32 distinct sourcing outputs, which allow the controller to energize field devices such as solenoids, actuators, and indicators by supplying a 24V DC signal. Because the hardware organizes these outputs into two isolated groups of 16 channels each, it offers enhanced electrical separation and simplified wiring for complex control architectures. Furthermore, the compact design enables significant I/O expansion without requiring excessive panel space.
This module operates within a standard voltage window of 20.4 to 26.4V DC, ensuring compatibility with common industrial power supplies. To ensure rapid machine response, the 1769-OB32 utilizes high-speed switching technology that limits ON-state delays to 0.1 ms and OFF-state delays to 1.0 ms. Additionally, the module maintains a power supply distance rating of eight, meaning installers must place it within eight slots of a compatible power supply to guarantee signal integrity. While the unit generates approximately 4.5W of heat during peak operation, its reinforced insulation and robust thermal management allow it to function reliably in environments reaching up to 60°C.
The 1769-OB32 serves as a critical interface for manufacturing lines and robotic cells where high-density I/O is a priority. During installation, the module connects directly to the system backplane through a secure tongue-and-groove locking mechanism. Since the module features a removable terminal block (RTB), maintenance teams can replace units without disconnecting individual field wires, thereby reducing potential system downtime. Moreover, the sourcing configuration simplifies troubleshooting by ensuring that the output point remains the high-side voltage source for the connected load.
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