Allen-Bradley 1747-L551 SLC 500 Modular Hardware Controller Module

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Allen-Bradley 1747-L551 SLC 500 Modular Hardware Controller Module

Core Functionality

The Allen-Bradley 1747-L551 is a modular hardware controller from the SLC 500 series, designed for industrial automation control. It features 16 KB of program memory, supports 4,096 I/O points, and integrates multiple communication protocols, making it suitable for discrete and process control applications .

Key Technical Specifications

Key Features & Benefits

1. Flexible Communication

   • Supports DeviceNet, ControlNet, and remote I/O for distributed control .

   • RS-232 port enables DF1 full-duplex, DF1 radio modem, and point-to-point communication .

2. High-Speed Processing

   • 0.9 ms/K scan time ensures rapid response for high-speed discrete control (e.g., packaging machines) .

   • Online programming (runtime editing) allows for minimal downtime during updates .

3. Robust Industrial Design

   • 1500V AC isolation between communication circuits for noise immunity .

   • 30G shock resistance (non-operating) for harsh environments .

4. Legacy System Integration

   • Compatible with SLC 500 I/O modules (e.g., 1746 series) .

   • Migration path to CompactLogix 5380 recommended by Rockwell Automation .

5. Diagnostics & Maintenance

   • LED status indicators for CPU health, battery status, and I/O forcing .

   • Hot-swappable modules (with proper power cycling) .

Typical Applications

• Packaging Machines: High-speed labeling/filling control .

• Material Handling: Conveyor system logic control .

• Process Industries: Batch monitoring in chemical/pharmaceutical plants .

The structure and details of the product：

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