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Clever motor starting - Soft motor starting with SINAMICS and SIRIUS

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The right drive solution for your application

Companies in all industrial sectors are faced with the challenge of ensuring the efficient operation of electric motors in a host of applications. Factors such as mechanical load, cost efficiency, compliance with standards, reliability, and improvement in energy efficiency need to be taken into account. In view of these challenges, it is often not easy to decide between a frequency converter and a soft starter.

Both ensure smooth, torque-controlled motor starting and prevent excessive torques that can result in premature damage to the components in the drive train and even in failure. Typical areas of use are pumps, fans, compressors, conveyor belts, belt drives or escalators.

Frequency converters as the solution

  • Ideal for flexible speed control to meet variable process parameters
  • Dedicated product functions and options for optimum adaption to a particular application
  • User-friendliness and flexibility

Soft starters as the solution

  • Compact and cost-efficient drive solution for fixed speed operation
  • Low maintenance requirement, additional accessories often not necessary
  • Integrated bypass function to reduce energy losses during operation, no additional heat generation

Whatever constraints you face, Siemens will offer you the best drive solution for your motor. Whether for efficient pumping, ventilating, and compressing, or precision moving, processing or machining, the number of applications where converters and soft starters can be used is almost endless. With our SINAMICS and SIRIUS portfolio, we can offer you the perfect solutions for your complex requirements. Our portfolio stands for integrated engineering, maximum energy efficiency, and user-friendly operation. See for yourself!

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Advantages and customer benefits for basic converter SINAMICS V20:

  • The perfect solution for basic applications
  • Simple installation in the control cabinet
  • Simple handling
  • Simply economical
  • Integrated, local or mobile operator panel
  • Plug-and-play (parameters preset)
  • Copy your own drive parameters directly in the packaging, with optional parameter loader

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Applications

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Link to the applications

Find your suitable product in the RS Webshop example (784-0748)

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Advantages and customer benefits for basic converter SINAMICS G120X:

  • Simple selection and ordering using just one article number - and immediately ready to run
  • Faster commissioning with the improved user-friendly setup using the SINAMICS G120 Smart Access Module or SINAMICS IOP-2
  • Simple installation, maintenance and service
  • Simply economical
  • Integrated STO SIL3 safety function protects operators, machines and processes
  • Rugged design for operation in harsh environments
  • Long cable lengths without output reactors
  • Integration into the automation process with an integrated communications interface (PROFINET, PROFIBUS, EtherNet/IP, Modbus RTU, USS, BACnet MS / TP2, Wi-Fi via SINAMICS G120 Smart Access Module)
  • Suitable for digitalization through cloud-based applications and direct connection to MindSphere
  • Predictive maintenance and transparency over the powertrain with SINAMICS CONNECT 300

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Applications

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Link to the applications

Find your suitable product in the RS Webshop example (184-0127)

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Advantages and customer benefits for basic converter SINAMICS G120C:

  • Simple installation, commissioning and operation
  • Rugged, compact system for challenging environmental conditions
  • Reduced costs due to savings in energy consumption and electrical operation costs
  • Integrated safety
  • Terminals/interfaces are configured using macros
  • Plug-in terminals for motor and power supply cables
  • Perfectly integrated into the automation process
  • Integration into the automation process with integrated communications interface (PROFINET, PROFIBUS DP, EtherNet/IP, USS/Modbus RTU, CANopen, PROFIsafe)
  • Suitable for digitalization and cloud-based analytics
  • SINAMICS G120 Smart Access Module
  • SINAMICS CONNECT 300

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Applications

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Link to the applications

Find your suitable product in the RS Webshop example (883-8746)

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Advantages and customer benefits for basic converter SINAMICS G120:

  • Efficient project engineering and menu-driven commissioning with TIA Integration
  • Time savings during series commissioning and with spare parts
  • Cost efficiency thanks to application-specific configuration
  • Simple, intuitive commissioning of EPos and integrated safety functions
  • Fewer parts in stock plus simple and fast service due to modularity
  • Energy and cost savings
  • Integration into the automation process with integrated communication interface (PROFINET, PROFIBUS DP, EtherNet/IP, USS/Modbus RTU, CANopen, PROFIsafe)
  • Suitable for digitalization and cloud-based analytics
  • SINAMICS G120 Smart Access Module
  • SINAMICS CONNECT 300

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Applications

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Link to the applications

Find your suitable product in the RS Webshop example (704-3896)

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Advantages and customer benefits for servo converter SINAMICS V90:

  • Optimized servo performance due to one-button tuning and auto-tuning
  • Simple to operate all-in-one solutions for motion control applications
  • Different control types, integrated braking resistor
  • A strong team with SIMATIC Controller in the TIA Portal (PROFINET version)
  • Cost-effective
  • Supports several line voltages, reliable motor protection, and STO function
  • Triple overload
  • Gear unit, motor, and converter are perfectly matched
  • Integration in the automation process with integrated communications (Pulse/direction interface, USS/Modbus RTU, PROFINET)
  • Suitable for digitalization and cloud-based analytics

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Applications

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Link to the applications

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Advantages and customer benefits for servo converter SINAMICS S210:

  • Simple commissioning with the integrated web server and full integration in the TIA Portal
  • Optimally matched to SIMATIC controllers such as S7-1500/T-CPU/ET-200 SP Open Controller
  • Optimized connection technology with OCC (One Cable Connection)
  • Increased performance thanks to SIMOTICS S-1FK2 servo motors
  • Braking resistor already integrated
  • Developed for high dynamic applications
  • PROFINET IRT
  • One button tuning
  • DC coupling on 3AC devices
  • Suitable for digitalization and cloud-based analytics (PROFINET, PROFIenergy, PROFIsafe, PROFIdrive)
  • Integrated web server

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Applications

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Link to the applications

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Advantages and customer benefits for soft starters SIRIUS 3RW30, 3RW40 and 3RW50:

  • Protection of the supply system, motor and load against overload
  • The favourable-priced solution for simple starting and stopping conditions
  • Ideal drive solution for applications with fixed speed
  • Parameterization by using potentiometers
  • Low maintenance efforts and costs
  • No additional heat generation thanks to integrated bypass contracts
  • Can be used worldwide thanks to numerous certificates and approvals
  • Modern hybrid switching technology for energy-saving and long service life
  • SIRIUS 3RW40: suitable for the starting of explosion-proof motors with "increased safety" type of protection EEX e according to ATEX Directive 94/9/EC
  • SIRIUS 3RW50: suitable for the starting of explosion-proof motors by certification according to ATEX/IECEx
  • Connection to the controller possible via parallel wiring (SIRIUS 3RW30 and SIRIUS 3RW40) or integration into automotion via side-mounted communication modules (3RW50)
  • SIRIUS 3RW 30 and SIRIUS 3RW40 for simple starting conditions: 
    • Reliable function
    • Attractive price
    • Diagnostics and status LED´s
  • SIRIUS 3RW50 as the compact solution with high functionality: 
    • HMI modules for the installation in the control cabinet door for evaluation of measured values and diagnostic data

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Applications with fixed speed operation

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Link to the applications

Find your suitable product in the RS Webshop example  (042-0479)

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Advantages and customer benefits for soft starters SIRIUS 3RW52, 3RW55 and 3RW55 Failsafe:

  • Protection of the supply system, motor and load against overload
  • SIRIUS 3RW52 and SIRIUS 3RW55, the ideal solution for standard applications and also for difficult starting operations
  • Suitable for inline and inside-delta circuits as a replacement for contactor assembly for star-delta (wye-delta) starting
  • Considerable space savings in the control panel compared to star/wye-delta combination
  • Modern hybrid switching technology for energy-saving and long service life
  • Can be used worldwide thanks to numerous certificates and approvals
  • Pump stop, pump cleaning, torque control and automatic parameterization (SIRIUS 3RW55 and 3RW55 Failsafe)
  • SIRIUS 3RW55 and 3RW55 Failsafe soft starter: suitable for the starting of explosion-proof motors by certification according to ATEX/IECEx
  • SIRIUS 3RW55 Failsafe soft starter for safety-related shutdown (STO = Safe Torque Off) up to SIL 3 / PL e
  • Integration into the automation system by means of plug-in communication modules (PROFINET, PROFIBUS, EtherNet/IP, Modbus)
  • HMI modules for reading out measured values, diagnostics data or for setting parameters
  • TIA integration for efficient configuration
  • SIRIUS 3RW55 and 3RW55 Failsafe: Self-teaching automatic parameterization even under changing load conditions

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Applications with fixed-speed operation

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Link to the applications

Find your suitable product in the RS Webshop example (185-9649)

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