The Siemens 6ES5947-3UR21 is a high-performance central processing unit module from the SIMATIC S5 series, specifically the CPU 947R. Designed for robust industrial control applications, this processor module serves as a core component in legacy automation architectures. Please note that this unit has been discontinued by the manufacturer; however, it remains a critical component for the maintenance and lifecycle extension of existing S5-based control systems.
Features
Core processing unit for SIMATIC S5 automation systems.
Designed for high-reliability industrial environments.
Compatible with specific S5 rack configurations.
Legacy support component for critical infrastructure.
Applications
This CPU module is primarily utilized in legacy manufacturing plants, power generation facilities, and process industries where SIMATIC S5 hardware remains in operation. It is typically employed for complex logic control, data processing, and system management within the S5 ecosystem.
Technical Specifications
Manufacturer
Siemens
Model Number
6ES5947-3UR21
Series
SIMATIC S5
Component Type
CPU 947R Processor Module
Status
Discontinued
Harmonized Tariff Code
8537109060
Installation Guidelines
Ensure all power is disconnected from the rack before attempting to insert or remove the CPU module to prevent electrical damage.
Handle the module using proper ESD (Electrostatic Discharge) protection practices to avoid damaging sensitive internal circuitry.
Verify that the module is correctly seated in the designated slot and that all locking mechanisms are fully engaged.
Ensure the installation environment is free from excessive vibration and within the specified temperature range for S5 hardware.
Check for proper ventilation around the rack to prevent thermal accumulation during operation.
FAQ
Is the 6ES5947-3UR21 currently available from the manufacturer?
No, this specific model has been discontinued by Siemens. It is typically sourced through specialized industrial spare parts suppliers for maintenance and repair purposes.
What is the recommended replacement for this module?
The CPU 948R is often cited as a functional alternative or successor for systems utilizing the 947R. We recommend verifying system compatibility and software requirements before performing any hardware upgrades or replacements.
