SIEMENS 6ES7952-1AM00-0AA0 RAM Memory Card For S7-400:

SIMATIC S7, RAM Memory Card for S7-400, long design, 4 Mbytes.

The Siemens 6ES7952-1AM00-0AA0 is a 4 MB RAM storage card designed for the SIMATIC S7-400 series Programmable Logic Controllers (PLCs). As a critical component in industrial automation, this module provides expandable memory for storing programs, data, and configurations, ensuring reliable operation even during power interruptions via battery-buffered data retention.

Technical Specifications:

Memory Type: RAM (Random Access Memory).

Capacity: 4 MB.

Operating Voltage: 5V DC (supplied via S7-400 backplane bus).

Data Protection: Battery-buffered to prevent data loss during power cycles.

Compatibility Notes:

Supported by S7-412-3, S7-414-3, and S7-417-4 series CPUs.

Limited to 16 MB maximum capacity on older S7-412-1 models.

Fully compatible with S7-400H redundant systems (subject to CPU firmware versions).

Application Scenarios:

1. Automotive Manufacturing:
   • Stores robotic welding programs and conveyor sequence logic.
   • Enables rapid program swaps for multi-model production lines.
2. Food & Beverage Processing:
   • Retains batch recipes and HMI configuration data.
   • Supports traceability systems through persistent data logging.
3. Energy Management:
   • Archives historical trends for power distribution networks.
   • Buffers SCADA communication parameters during network outages.
4. Water Treatment:
   • Maintains PID controller tuning parameters across pump stations.
   • Stores emergency shutdown protocols for safe operation.
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