1769-0B32

Overview of Allen Bradley 1769-OB32

The Allen Bradley 1769-OB32 is a 32-point solid-state digital output module developed to support CompactLogix and MicroLogix 1500 systems. This high-density module is designed to maximize space efficiency in control cabinets, integrating seamlessly into environments where panel space is at a premium. Operating within a voltage range of 20.4 to 26.4 V DC, the 1769-OB32 provides reliable sourcing outputs, suitable for driving a wide range of industrial actuators and indicating devices. Its rugged design withstands demanding conditions, offering rapid switching with minimal delay—key for high-speed applications. Whether expanding an existing CompactLogix rack or upgrading a MicroLogix 1500 setup, this module’s blend of high channel count and compact form factor offers significant flexibility to engineers managing scalable automation systems. High signal integrity and comprehensive protective features further support consistent operation across varied industrial sites.

Key Features of Allen Bradley 1769-OB32

• 32 discrete sourcing DC output channels (split into two isolated groups of 16)
• Compatible with CompactLogix and MicroLogix 1500 controllers
• Voltage range: 20.4 to 26.4 V DC
• Current per channel: 0.5 A at 60°C, 1.0 A at lower temperatures
• Fast response time (0.1 ms turn-on, 1.0 ms turn-off)
• DIN rail or panel mounting with compact footprint
• Engineered for reliable operation in harsh plant environments

Technical Specs of 1769-OB32

• Number of outputs: 32 sourcing (transistor type)
• Operating voltage: 20.4–26.4 V DC
• Current per output: 0.5 A (60°C max), 1.0 A at 30°C
• Bus current draw: 300 mA at 5 V DC (1.5 W)
• Heat dissipation: 4.5 W (all points energized)
• Signal delay: 0.1 ms turn-on, 1.0 ms turn-off (resistive load)
• Operating temperature: 0°C to 60°C
• Dimensions: 118 x 52.5 x 87 mm (4.65 x 2.07 x 3.43 in.)
• Weight: ~450 g
• Mounting: DIN rail or panel-mount

Applications / Use Case

The Allen Bradley 1769-OB32 is widely used to control discrete actuators such as relays, solenoids, indicator lamps, and other digital field devices in automation projects. Its high channel count and compact design allow integration into both large-scale production lines and smaller robotic systems where maximizing rack space is critical. Typical sectors include automotive assembly, material handling, food and beverage processing, and packaging machinery. The sourcing output circuits are ideal for controlling devices with sinking inputs, offering versatility for retrofit and greenfield installations alike. Maintenance staff benefit from clear diagnostics and simplified wiring, supporting quick troubleshooting and minimal downtime during module replacements or system upgrades.

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