The Siemens 6ES7952-1AK00-0AA0 functions as a high-speed RAM memory card for SIMATIC S7-400 PLC systems. This storage module holds user programs, configuration data, and system parameters securely. Engineers use this card to expand memory capacity for complex automation applications. Its compact design inserts directly into CPU front-panel slots without tools.
Technical Specifications
| Specification | Details |
|---|---|
| Dimensions | 54 mm x 45 mm x 5 mm |
| Weight | 0.02 kg |
| Memory Type | Static RAM (SRAM) with battery backup |
| Memory Capacity | 64 KB |
| Battery Type | Lithium coin cell (CR2032) |
| Battery Life | 3 years typical at 25°C |
| Data Retention | 30 days minimum without power |
| Access Time | 70 ns maximum |
| Interface | Proprietary S7-400 memory card slot |
| Compatible CPUs | S7-400 series CPUs with RAM card support |
| Program Capacity | Stores up to 64 KB of user program and data |
| Write Cycles | Unlimited (SRAM technology) |
| Operating Temperature | 0°C to 60°C |
| Storage Temperature | -40°C to 85°C |
| Humidity | 5% to 95% non-condensing |
| Shock Resistance | 15 g peak, 11 ms duration |
| Certifications | CE, UL, CSA |
Reliable Program Storage for Critical Applications
The 6ES7952-1AK00-0AA0 provides 64 KB of static RAM for S7-400 user program storage. Its fast 70 ns access time ensures quick program execution without processor wait states. This memory card retains data through the integrated lithium battery during power outages. Consequently, critical programs remain available immediately after system restart.
Battery-Backed Data Integrity
Industrial PLCs require reliable data retention during unexpected power interruptions or maintenance shutdowns. The 6ES7952-1AK00-0AA0 includes a factory-installed CR2032 lithium battery for backup. This battery maintains memory contents for at least 30 days without external power. A low-battery warning allows preventive replacement before data loss occurs.
Seamless Integration with S7-400 Systems
This Siemens memory card inserts directly into the front slot of compatible S7-400 CPUs. The card requires no configuration or formatting before first-time use. Users simply download programs to the CPU, which automatically stores them on the card. The CPU also reads program data from the card during startup for immediate operation.
Unlimited Write Cycles for Frequent Changes
Static RAM technology allows unlimited write cycles without degradation over time. Engineers can therefore modify programs frequently during commissioning without concern. The 6ES7952-1AK00-0AA0 supports online program changes while the CPU continues operating. This feature proves valuable during process optimization and troubleshooting activities.
Compact and Durable Construction
The card measures only 54 mm x 45 mm and weighs virtually nothing for minimal cabinet space impact. Its rugged construction withstands vibration and shock common in industrial environments. Gold-plated contacts ensure reliable electrical connection even after repeated insertions. The protective case prevents static damage during handling and installation.
Details
| Weight | 1.2 kg |
|---|---|
| Dimensions | 50 × 290 × 217 mm |
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