Description
Allen-Bradley Legacy Memory Segment
Model: 1772-MS | 2K (2,048) Word RAM | Core Hardware Reference: UK8522
Product Overview
The genuine Allen-Bradley 1772-MS Memory Segment is an essential, highly specialized solid-state RAM card engineered for legacy Allen-Bradley programmable logic controller architectures (such as the classic PLC-2 series systems). Marked with the authentication identifier UK8522, this module supplies a 2K (2,048) Word RAM capacity to handle local system parameters, registers, and operational ladder programming logic layers. It serves as an increasingly rare, vital replacement component for industrial automation engineers tasked with maintaining, repairing, or restoring critical heritage plant infrastructure to avoid expensive control room overhauls.
Technical Specifications
| Parameter | Specification Details |
|---|---|
| Brand | Allen-Bradley / Rockwell Automation |
| Catalog Number | 1772-MS |
| Core Hardware Reference | UK8522 |
| Memory Type | Solid-State Volatile RAM (Random Access Memory) |
| Storage Capacity | 2K Words (2,048 Words / 16-bit word alignment mapping) |
| System Compatibility | Legacy Allen-Bradley PLC-2 Processor Chassis / Modular Rack Layouts |
| Form Factor | Plug-in circuit card with integrated pull handle architecture |
Key Features & Architectural Benefits
- Deterministic Data Storage: Delivers low-latency access times for handling historical binary ladder logic states, timers, and counter matrices.
- Gold-Plated Backplane Bus Pins: Durable board-edge connection teeth optimize signal trace continuity, mitigating data bus dropouts or communication faults inside the rack.
- Robust Assembly Quality: Built with heavy industrial-grade capacitors and traces designed to resist structural thermal variances within closed enclosures.
- Critical Legacy Preservation: Provides the specific technical footprint required to repair classic manufacturing, processing, or packing lines without migrating to entirely new logic control formats.

