SIEMENS Active Line Module 6SL5130-6UE25-5AC0 Regenerative Booksize Drive 55kW

　　The Siemens 6SL5130-6UE25-5AC0 is a quintessential Active Line Module(ALM)that forms the intelligent and efficient power supply heart of advanced industrial automation systems.As a booksized regenerative drive component,this module is engineered for the SINAMICS S120 platform,delivering 55kW of regulated power for continuous-duty(Cycle C)applications.It masterfully converts 380-480V three-phase AC line supply into a stabilized DC link,but its true engineering distinction lies in its bidirectional energy flow capability.Unlike conventional units,this ALM can actively feed braking energy from the motor drives back into the plant grid,transforming a cost center into a source of significant operational savings and establishing a new benchmark for sustainable,high-precision motion control.

　　1.Product Positioning and Core Technical Philosophy

　　The Active Line Module represents the pinnacle of power supply technology within modular drive systems.Its primary role extends far beyond simple rectification.

　　1.1.The Role of an ALM in a SINAMICS S120 System

　　Within the SINAMICS S120 architecture,the ALM is the cornerstone of the"common DC bus"concept.It creates a precise,high-quality 600V DC electrical bus from the incoming AC mains.This common bus then powers multiple downstream Motor Modules,which in turn control individual servo or induction motors.This architecture centralizes power conversion and decouples the motor performance from grid fluctuations,allowing for a more compact,efficient,and dynamically responsive multi-axis system.

　　1.2.The Regenerative Technology Advantage

　　The defining feature of this Active Line Module is its regenerative IGBT(Insulated-Gate Bipolar Transistor)front end.During motoring,it acts as a rectifier.When a motor slows down or lowers a load,it acts as a generator.A basic power module would waste this energy as heat in a braking resistor.In contrast,this ALM intelligently inverts the DC energy back into AC sine waves that are synchronized with the mains frequency and phase,pumping it directly back into the factory's electrical network.This process slashes energy consumption,reduces cooling requirements,and minimizes harmonic distortion on the supply line.

　　2.Technical Deep Dive:Specifications and Intelligent Design

　　The 6SL5130-6UE25-5AC0 is packed with sophisticated features that translate its technical philosophy into tangible performance.

　　2.1.Comprehensive Technical Specifications

　　Input Power:3-phase AC,380V-480V,50/60 Hz.

　　Output Power:55 kW,optimized for continuous operation(Cycle C).

　　DC Link Output:A regulated 600V DC bus,maintained with exceptional stability regardless of minor line voltage sags.

　　Communication:Fully integrated via the proprietary DRIVE-CLiQ digital interface.This allows for automatic module recognition,centralized parameter management,and real-time access to a comprehensive suite of diagnostic data.

　　Design and Cooling:Compact booksized form factor(IP20 protection)for high-density mounting in control cabinets.It utilizes internal forced-air cooling designed for efficient heat dissipation within constrained panel spaces.

　　2.2.Advanced Control and Harmonic Mitigation

　　This module employs active control algorithms to achieve a near-unity power factor(cosφ≈1).This minimizes reactive power demand,often eliminating the need for external power factor correction equipment and ensuring full utilization of the available grid current.Furthermore,its active switching pattern is designed to drastically reduce characteristic line harmonics,complying with stringent electromagnetic compatibility(EMC)standards and protecting other sensitive equipment on the same supply.

　　3.Application Scenarios and System Integration

　　The 55kW Active Line Module is tailored for demanding industrial applications where performance,precision,and energy costs are critical.

　　3.1.Ideal Application Fields

　　High-Dynamic Machine Tools:In CNC machining centers,lathes,and grinders,where frequent,rapid acceleration and deceleration of multiple axes generate substantial regenerative energy.The ALM recovers this energy,improving overall system efficiency and thermal management.

　　Material Handling Systems:For cranes,hoists,and descending conveyors,where gravitational potential energy during lowering is converted and fed back to the grid,leading to dramatic energy savings.

　　Test Benches and Simulators:Applications requiring continuous motoring and braking cycles,such as dynamometers or endurance testing rigs,benefit immensely from regenerative operation to reduce operating costs.

　　Packaging and Printing Machinery:Complex multi-axis systems with synchronized movements that involve frequent speed changes.

　　3.2.Critical Integration Components

　　A successful installation requires more than just the ALM itself.It must be paired with a matching Active Interface Module(AIM).The AIM,mounted between the grid and the ALM,contains essential line filters,a pre-charging circuit for the DC link capacitors,and monitoring components.This combination is mandatory for safe operation,EMC compliance,and achieving the published performance characteristics.Configuration of the entire drive system,including this ALM,is performed seamlessly within the Siemens TIA Portal engineering framework using the SINAMICS Startdrive software.

　　4.Comparative Analysis and Strategic Selection

　　Understanding where the Active Line Module fits within the spectrum of Siemens power modules is crucial for optimal system design.

　　4.1.ALM vs.Smart Line Module(SLM)vs.Basic Line Module(BLM)

　　While all three can create a common DC bus,their capabilities differ significantly:

　　Basic Line Module(BLM):A non-regenerative,diode/thyristor-based rectifier.It is the most economical choice but requires an external braking resistor to dissipate all braking energy as waste heat.Suitable for applications with infrequent braking.

　　Smart Line Module(SLM):An IGBT-based,regenerative unit like the ALM,making it energy-efficient.Its key difference is that it provides a non-regulated DC link;the bus voltage fluctuates with the input AC voltage.It offers a balance between performance and cost.

　　Active Line Module(This Model):The premium,regenerative solution.Its core advantage is providing a perfectly regulated DC link voltage(600V).This ensures consistent motor torque capability and performance,even during line voltage dips,which is critical for high-precision and high-availability applications.It also offers the best power quality on the line side.

　　4.2.Selection Guidelines for the 55kW ALM

　　Choose the 6SL5130-6UE25-5AC0 Active Line Module when:

　　The application involves frequent braking with significant energy recovery potential.

　　Process stability and precision are paramount,requiring immunity to grid voltage variations.

　　Power quality is a concern,and low harmonic distortion is required.

　　The total connected power of all downstream Motor Modules on the common DC bus is within the 55kW continuous rating.

　　5.Advanced Functions and Lifecycle Considerations

　　Beyond core performance,this module supports advanced system features.

　　It is fully compatible with Siemens'Safety Integrated functions.When used with appropriate control units and configuration,it can support safety protocols like Safe Torque Off(STO)or Safe Stop 1(SS1),contributing directly to machine safety at the power supply level.Furthermore,the extensive diagnostics available through DRIVE-CLiQ enable predictive maintenance strategies,monitoring parameters like operating hours,thermal loads,and component stress to plan service activities proactively and avoid unplanned downtime.

　　To summarize,the Siemens 6SL5130-6UE25-5AC0 is not merely a power supply;it is a strategic investment in system performance,energy efficiency,and control precision.Its regenerative technology provides a rapid return on investment in dynamic applications,while its active front-end design ensures the clean,stable power essential for the most demanding multi-axis motion control systems.