PLCs, Power Supplies & Others

Core Technical Specifications

This CMOS-RAM module provides dependable memory expansion for critical data retention. We engineered the SC 8128 to safeguard your application code and process variables during power interruptions.

Durable Memory Retention

The SC 8128 provides 128 KB of static RAM for storing critical program data and system parameters. The replaceable lithium battery maintains this data for up to five years without external power. This long retention period protects your investment in application development and system configuration. Consequently, you can replace the battery during scheduled maintenance without losing valuable information.

Fast Access and Reliable Operation

This memory module delivers a 150 ns typical access time for rapid read and write operations. This speed ensures seamless integration with high-performance processors without introducing wait states. The 16-bit parallel interface transfers data efficiently between the module and the CPU. Therefore, the SC 8128 supports demanding applications that require frequent data logging and parameter updates.

Intelligent Battery Management

The SC 8128 incorporates a low-voltage detection circuit that constantly monitors battery health. An LED indicator provides a clear visual warning when the battery approaches the end of its service life. This early warning system allows you to schedule battery replacement proactively, avoiding unexpected data loss. The user-replaceable battery design simplifies maintenance and eliminates costly factory service calls.

Compact and Lightweight Construction

This memory module occupies minimal space with its low-profile 20 mm height. The 0.25 kg weight ensures secure seating in the chassis without stressing connectors or backplanes. You can install the SC 8128 alongside other modules in standard Schneider racks. The compact form factor suits both new installations and retrofit upgrades to existing control systems.

Robust Environmental Tolerance

The SC 8128 operates reliably across a 0 °C to 60 °C temperature range for consistent performance. It also withstands storage temperatures from -40 °C to +85 °C for flexible inventory management. The module’s rugged construction resists vibration and humidity commonly present in industrial environments. This durability ensures long service life and dependable operation in diverse application settings.

Details