Description:

The Allen-Bradley 1747-L552 SLC 500 processor unit is used in industrial automation systems to provide centralized control, logic processing, and communication for machine and process operations. Commonly installed in SLC 500 modular PLC systems to manage I/O, execute control programs, and interface with networked devices. Maintenance teams and system integrators use this processor for system control, upgrades, troubleshooting, and replacement of legacy PLC processors.

Applications:

The Allen-Bradley 1747-L552 processor is commonly used in manufacturing systems, packaging lines, material handling equipment, and process control environments where reliable PLC control and Ethernet communication are required. It supports distributed automation architectures and plant-wide integration.

Technical Specifications:

• Manufacturer Part Number (MPN): 1747-L552
• Product Type: PLC Processor Unit (CPU)
• Series: SLC 500 (SLC 5/05)
• User Memory: 32K words
• Communication Ports: Ethernet (EtherNet/IP) and RS-232
• Ethernet Features: BOOTP enabled, supports up to ~48 connections
• I/O Capacity: Up to 4096 inputs / 4096 outputs
• Analog I/O: Up to 480 points
• Chassis Support: Up to 3 I/O chassis, 30 total slots
• Programming: Ladder Logic
• Mounting: Chassis mount (SLC 500 rack)
• Battery Backup: Yes
• Dimensions: ~145 × 35 × 142 mm
• Application Environment: Industrial automation systems

Common Replacements:

• Allen-Bradley 1747-L553 (higher memory version)
• Allen-Bradley 1747-L551 (lower memory version)
• Allen-Bradley CompactLogix (modern platform upgrade)