PLCs, Power Supplies & Others

Product Overview

The Siemens 6ES5373-0AA41 is an expansion memory module for the SIMATIC S5 programmable controller family. This unit increases the available storage capacity for complex user programs and data blocks. It plugs directly into the S5-100U or S5-101U rack systems. The module provides additional memory space for larger automation applications. Users can store extended logic sequences, recipes, and process parameters. It works seamlessly with standard S5 processors through the backplane bus. This memory module employs battery-backed technology to preserve data during power interruptions. Its compact form factor occupies a single slot with minimal panel space. The Siemens 6ES5373-0AA41 supports both program and data memory expansion. It upgrades system capabilities without requiring a full CPU replacement. Consequently, engineers can enhance performance while protecting their existing hardware investment. The module delivers dependable operation across a wide industrial temperature range. Its sturdy construction resists vibration and mechanical stress in factory cabinets.

Technical Specifications

The following table provides detailed technical parameters for the Siemens 6ES5373-0AA41:

Key Functional Features

This memory module adds 4 kilobytes of battery-backed RAM to your S5 system. It retains stored data with an exceptionally low backup current of just 5 microamperes. Furthermore, the lithium battery maintains memory integrity for approximately two years of normal operation. The module offers a typical access time of 120 nanoseconds for rapid read and write cycles. It shares memory space flexibly between program instructions and operational data. This design accommodates a wide variety of application requirements. The unit consumes only 120 milliamperes during active use, reducing power supply load. Its 25-millimeter width allows multiple expansion modules within a single rack. The module operates effectively between 0 and 55 degrees Celsius. Moreover, it includes built-in parity checking for continuous data integrity verification. This feature detects memory errors and alerts the CPU accordingly. The Siemens 6ES5373-0AA41 supports online program extensions without halting system operation. Consequently, engineers can modify applications during active production runs. It integrates seamlessly with standard S5 programming environments. The module’s static RAM design eliminates refresh cycles for consistent performance. Its protective housing shields sensitive memory chips from physical damage. This memory upgrade improves overall system throughput for demanding control tasks.

Installation and Compatibility

You can insert this module into any available slot of an S5-100U or S5-101U rack system. First, align the edge connector with the backplane socket and apply gentle pressure. Then, secure the unit with the two retaining screws for a stable connection. Install the lithium battery before powering up the system for the first time. The module initializes automatically and becomes available to the CPU. Verify that your processor supports memory expansion prior to installation. This module works with all S5-100U and S5-101U CPUs that offer expansion capability. Replace the battery every two years to ensure continuous data retention. Always use Siemens-approved batteries for replacement to maintain reliability. The module requires no special addressing or complex configuration steps. It integrates smoothly with existing I/O and communication cards. Keep the ambient temperature within the specified range for optimal operation. This memory upgrade offers a cost-effective path for system enhancement. Ultimately, the Siemens 6ES5373-0AA41 delivers valuable expansion capacity for your automation controller.

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