Siemens 6ES5513-3MA11 Memory Module for SIMATIC S5 Systems

The Siemens 6ES5513-3MA11 expands the program storage capacity of SIMATIC S5 PLCs. You can plug this module directly into any standard S5 memory slot. It retains user logic and configuration data using battery backup. This solution suits critical automation tasks requiring long-term program persistence.

Technical Specifications and Internal Design

This memory module measures 233 mm in height. Its width reaches 27 mm, and the depth equals 182 mm. The Siemens 6ES5513-3MA11 weighs approximately 0.38 kilograms. A single internal PCB holds all memory and power management circuits. The module stores data using CMOS RAM technology. It includes one replaceable lithium battery for energy storage. This battery preserves contents during controller power-off periods. One 48-pin edge connector interfaces with the S5 backplane.

Memory Capacity and Data Retention

The Siemens 6ES5513-3MA11 provides 32 KB of user program storage. This capacity handles approximately 3000 ladder logic instructions comfortably. The lithium battery offers two years of typical service life. A front-panel LED signals low battery voltage one month in advance. Consequently, you can schedule maintenance without unexpected data loss. The module also retains 2 KB of retentive flag memory. Operating temperature ranges from 0°C to 60°C reliably.

Installation and Data Protection Features

You must insert this module firmly into a dedicated S5 memory slot. Transitioning to battery replacement, remove the module from the rack first. The module includes a write-protect switch on its front face. This switch prevents accidental program overwrites during normal operation. For maximum safety, always create a backup before changing the battery. The module consumes only 20 mA from the backplane during normal use.