Product Introduction
When your automation system demands reliable, high-speed output switching with minimal power loss, the Allen-Bradley 1762-OB8 Solid-State Expansion Module delivers. Part of the MicroLogix 1200 series, this 8-point digital DC output module provides robust sourcing outputs for industrial control applications. With a wide operating voltage range of 20.4 to 26.4V DC, it ensures consistent performance even in fluctuating power environments. The solid-state design eliminates mechanical wear, offering extended service life and reduced maintenance costs—key factors for improving your system's total cost of ownership.
Technical Specifications
Based on manufacturer data, the Allen-Bradley 1762-OB8 offers the following key parameters:
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Outputs: 8 digital sourcing outputs at 24V DC
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Operating Voltage: 20.4–26.4V DC
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Backplane Current: 115 mA at 5V DC
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Maximum Load per Point: 0.5A (aggregate 4A per module)
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Intermittent Surge: 2A for 10 ms, repeatable every 2 seconds
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Signal Delays: ON-state 0.1 ms, OFF-state 1.0 ms (resistive load)
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Leakage Current: 1.0 mA max ON/OFF state
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ON-State Voltage Drop: 1.0V DC max
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Power Dissipation: 1.6 Watts operational
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Isolation: Group-to-backplane tested at 1200V AC / 1697V DC for 1 second
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Operating Temperature: 0 to 55°C (32 to 131°F) at 5–95% RH non-condensing
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Storage Temperature: -40 to 85°C (-40 to 185°F)
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Vibration/Shock: 5G @ 500 Hz vibration; 30G shock
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Dimensions: 90 x 87 x 40.4 mm; weight 210 g
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Mounting: DIN Rail
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Certifications: UL, c-UL, CE
Industry Applications
The 1762-OB8 excels in applications requiring fast, reliable DC output control. Use it for solenoid valves, indicator lights, small motor starters, and interposing relays in packaging, material handling, and assembly lines. Its solid-state outputs eliminate contact bounce and arcing, making it ideal for high-cycle operations where uptime is critical. In a typical conveyor sorting system, the module's 0.1 ms ON delay ensures precise timing for divert gates, improving throughput and reducing product jams.
Installation & Maintenance
Mount the 1762-OB8 on a standard DIN rail within the MicroLogix 1200 chassis. Ensure proper backplane connection and observe the maximum power supply distance of six module lengths. For reliable operation, keep ambient temperature below 55°C and humidity non-condensing. No routine calibration is required, but periodic inspection of terminal connections and load currents helps prevent overstress. The solid-state design inherently resists vibration and shock, reducing the need for frequent replacements—a direct benefit to your maintenance budget.
Selection Guide & Purchasing Advice
Before purchasing, verify that your MicroLogix 1200 controller supports expansion modules and that the backplane current of 115 mA at 5V is within your system's supply capacity. For additional outputs, consider pairing multiple 1762-OB8 modules. UBEST Automation (ubest101.myshopify.com) offers genuine Allen-Bradley 1762-OB8 modules with fast shipping and technical support. Ensure you order the correct catalog number to match your application requirements.