The Siemens 6ES5948-3UA11 is a high-performance CPU 948 processor module designed for the SIMATIC S5-135U and S5-155U programmable logic controller (PLC) systems. As a core component of the S5 automation family, this module provides the processing power and memory management required for complex industrial control applications. Please note that this unit has been discontinued by the manufacturer and is typically sourced as a spare part for legacy system maintenance and support.
Features
Designed for integration with S5-135U and S5-155U rack systems.
Equipped with 640KB of memory for program storage and data handling.
Robust architecture suitable for demanding industrial environments.
Direct replacement or spare for existing CPU 948 installations.
Applications
This CPU module is primarily utilized in legacy industrial automation environments, including power generation, chemical processing, and large-scale manufacturing lines where SIMATIC S5 systems remain in operation. It serves as the central processing unit for managing I/O, executing control logic, and handling communication tasks within the S5 chassis.
Technical Specifications
Model Number
6ES5948-3UA11
Series
SIMATIC S5
Processor Type
CPU 948
Memory Capacity
640KB
Manufacturer
Siemens
Status
Discontinued
Installation Guidelines
Ensure the PLC rack power is completely disconnected before attempting to insert or remove the CPU module to prevent electrical damage.
Handle the module by the edges; avoid touching the backplane connectors or internal components to prevent ESD (Electrostatic Discharge) damage.
Verify that the module is correctly seated in the designated CPU slot of the S5-135/155U rack and that the locking mechanisms are engaged.
Ensure adequate ventilation around the PLC rack to maintain operating temperatures within manufacturer-specified limits.
Check all backplane and communication cable connections for security and proper alignment before powering up the system.
FAQ
Is the 6ES5948-3UA11 still manufactured by Siemens?
No, this product has been discontinued by the manufacturer. It is currently available primarily through surplus and secondary market channels for maintenance of existing legacy systems.
What systems is this CPU compatible with?
The 6ES5948-3UA11 is specifically designed for use with the Siemens SIMATIC S5-135U and S5-155U PLC series.
