The Siemens 6ES5375-0LD31 is a plug-in volatile random-access memory (RAM) submodule engineered for the Siemens Simatic S5 automation system. This module provides 32 KB of high-speed memory capacity, serving as a critical component for real-time program execution, dynamic data register buffering, and active statement sequence management. It is designed to integrate directly into the host processor scan path, allowing for efficient read/write cycles and facilitating rapid modifications to application code without the need for extensive system reboots.
Features
32 KB static RAM (SRAM) capacity for high-speed data access.
Direct interface with Simatic S5 processor backplane via edge-connector.
Low-profile housing designed for protection against electrostatic discharge (ESD) and electromagnetic interference.
Supports immediate data updates, reducing downtime during iterative automation algorithm development.
Applications
This memory module is widely utilized in industrial environments including petrochemical refineries, power generation facilities, and maritime cargo handling systems where Simatic S5 controllers are deployed to manage complex, time-sensitive automation logic.
Technical Specifications
Model
6ES5375-0LD31
Memory Type
Volatile Static RAM
Capacity
32 KB (32768 Bytes)
Operating Temperature
0 to 60 deg C
Storage Temperature
-40 to 70 deg C
Relative Humidity
95% maximum non-condensing
Power Consumption
<= 0.4 W (via backplane)
Installation Guidelines
Power Safety: Always isolate input power to the Simatic S5 chassis before inserting or removing the memory submodule to prevent logic rail voltage dips or data corruption.
Battery Backup: Ensure the host controller's backup battery is functional and maintains the required voltage levels before removing system power, as the module is volatile and relies on this battery to preserve the 32 KB memory matrix.
Mechanical Seating: Align the module with the designated guide rails and apply uniform pressure until the locking mechanism is fully engaged to ensure stable contact and resistance to vibration.
Handling: Observe standard ESD precautions when handling the module to prevent damage to the semiconductor components.
FAQ
Is this module non-volatile?
No, the 6ES5375-0LD31 is a volatile SRAM module. It requires a constant power supply or a functional backplane battery backup to retain its stored data.
Can this module be hot-swapped?
No, hot-swapping is not recommended. Power should be removed from the chassis before installation or extraction to prevent potential data loss or hardware damage.
