Product Overview

The Allen-Bradley 1747-L552 serves as a cornerstone hardware solution for medium-to-large industrial automation systems. This SLC 5/05 central processing unit delivers high-speed processing capabilities and scalable architecture across plant-wide networks. It utilizes 32 KB of total user memory to manage dense calculation tasks and extensive I/O structures. The integrated 10/100 Mbps Ethernet port enables direct Information Internet of Things (IIoT) connectivity, bypassing the need for separate communication modules. This 100% brand new, factory-original controller optimizes throughput in fast-paced production environments, including high-speed packaging, automated material handling, and complex HVAC networks.

Technical Specifications

Engineering Advantages

• Eliminate Network Bottlenecks: The on-board 10/100 Mbps Ethernet port transfers operational data at native backplane speeds. It feeds data directly to supervisory control systems, HMI hardware, and enterprise databases without requiring slow, external network bridges.

• Maximize Panel Space Utilization: The modular chassis-mount construction drops directly into standard SLC 500 racks. This design packs control for up to 8192 total digital I/O points into a tight physical footprint, which saves premium real estate inside control enclosures.

• Protect Volatile Data Profiles: A replaceable lithium battery pairs with optional non-volatile Flash EPROM chips. This redundant safety pairing prevents costly program corruption or register loss during sudden plant power blackouts.

• Mitigate Electrical Noise Disruption: Built to pass strict NEMA ICS 2-230 standards, the internal circuitry filters out high-frequency electromagnetic interference (EMI). This heavy industrial shielding guarantees continuous, un-faulted operation near high-power motor drives and heavy switching relays.

• Accelerate Math Execution: The CPU instruction set natively executes indirect addressing and advanced floating-point math variables. This processing efficiency cuts overall scan cycles down to 0.9 ms per Kword, allowing tight control loops over high-speed assembly and indexing mechanics.

FAQs

• Can the 1747-L552 replace an older SLC 5/04 or SLC 5/03 processor directly?

  Yes. The 1747-L552 drops into the same physical slot (Slot 0) of any standard SLC 500 chassis. However, since the 1747-L552 replaces DH+ or DH-485 communication ports with an Ethernet port, engineers must reconfigure the communication path in the RSLogix 500 program before executing a project download.

• What action prevents program loss when replacing the backup battery?

  Keep the SLC 500 chassis powered up during battery replacement to preserve data in the volatile RAM. If you must replace the battery while the unit lacks chassis power, complete the physical exchange within 30 minutes; the internal capacitor holds data temporarily to prevent memory wipe.

• Does this unit arrive with factory-sealed packaging?

  We supply this item as a 100% brand new, original factory-sealed unit. It includes all official Allen-Bradley quality inspections, original internal packaging inserts, and fresh backup batteries straight from industrial distribution storage.