Description

The Siemens 6ES5955-5LB11 is a robust power supply module designed specifically for the Simatic S5-135U and S5-155U programmable logic controller systems. This unit provides stable, regulated DC power to the system backplane, ensuring consistent operation in demanding industrial environments. By maintaining precise voltage levels, it supports the reliability of central processing units and I/O modules, helping to prevent unplanned downtime in critical applications such as automotive manufacturing, petrochemical processing, and infrastructure management.

Features

• Designed for seamless integration with S5-135U and S5-155U rack systems.
• Selectable input voltage range for flexibility in global power environments.
• Integrated protection circuitry against short-circuits and overvoltage conditions.
• Front-panel LED indicators for immediate monitoring of input power and output status.
• High-capacity filtering to mitigate grid-borne electrical noise and voltage transients.
• Natural convection cooling design for maintenance-free operation.

Technical Specifications

Installation Guidelines

• Ensure the PLC rack is powered down before installing or removing the power supply module.
• Verify that the input voltage selection switch matches the local supply voltage before applying power.
• Mount the module securely in the designated power supply slot of the S5 rack to ensure proper backplane connection.
• Maintain adequate clearance around the module to allow for natural convection cooling; do not obstruct ventilation paths.
• Use appropriate ESD precautions when handling the module to prevent damage to internal electronic components.
• Ensure all wiring is routed away from high-EMI sources to maintain signal and power integrity.

FAQ

What systems is the 6ES5955-5LB11 compatible with?

This power supply is specifically engineered for use with the Siemens Simatic S5-135U and S5-155U PLC platforms.

How is the input voltage configured?

The module features a selectable input switch allowing it to operate on either 115 VAC or 230 VAC power sources.

What protection features are included?

The unit includes built-in short-circuit and overvoltage protection to safeguard the connected CPU and I/O modules from electrical faults.