Description

The Siemens 6ES5928-3UB21, commonly referred to as the CPU 928B, is a high-performance central processing unit engineered for integration within Simatic S5-135U and S5-155U programmable controller systems. This module serves as the primary computational core for complex industrial automation, offering high-speed logic execution and multi-processor coordination capabilities. It is specifically designed to handle demanding control tasks in environments such as heavy manufacturing, chemical processing, and energy infrastructure, providing the reliability required for legacy system maintenance and operational continuity.

Features

• Designed for high-speed processing in S5-135U and S5-155U rack systems.
• Supports multi-processor configurations for complex, large-scale automation requirements.
• Integrated secondary interface receptacle for expanded communication and networking flexibility.
• Real-time internal diagnostic monitoring to ensure system health and rapid fault detection.
• Robust hardware architecture resistant to electrical noise and industrial environmental stressors.
• Single-width module design for efficient utilization of S5 mounting rack space.

Applications

The 6ES5928-3UB21 is primarily utilized in large-scale industrial control architectures where high-speed logic processing and system stability are critical. Typical applications include heavy steel production lines, chemical processing plants, and complex power distribution network management where high-level control instructions must be executed with minimal latency.

Technical Specifications

Installation Guidelines

• Ensure the S5 rack power is disconnected before inserting or removing the CPU module to prevent electrical damage.
• Verify that the module is correctly seated in the designated CPU slot of the S5-135U or S5-155U mounting frame.
• Maintain adequate clearance around the module to facilitate proper airflow and cooling within the control cabinet.
• Use appropriate ESD protection measures when handling the module to prevent damage to sensitive internal circuitry.
• Ensure all backplane connections are secure and free of debris or oxidation.

FAQ

What systems is the 6ES5928-3UB21 compatible with?

This CPU is specifically designed for use with the Siemens Simatic S5-135U and S5-155U programmable logic controller systems.

Does this module require external power?

No, the module receives its nominal 5 VDC power supply directly from the S5 backplane once installed in the rack.

What is the primary function of the secondary interface receptacle?

The secondary interface receptacle allows for expanded communication capabilities and specialized data exchange, enabling the CPU to function within hierarchical control architectures.