Siemens Answers with SINAMICS DC Master - the Next Generation of DC Drives Technology

The SINAMICS DC Master combines the advantages of its predecessor, the SIMOREG DC Master, with those of the SINAMICS drives family. Many of the same tools and components so successful in AC technology are now made available for SINAMICS DC drives. This series of drives sets itself apart as a scalable drive system - both for basic as well as demanding and sophisticated applications. For the standard closed-loop control, the DC converter is equipped with a standard control unit for converters (standard CUD). For applications demanding a higher computational performance and interfaces, the system can be expanded by an advanced CUD.


SINAMICS DCM Cabinets: Product phase-out announcement
Effective October 1, 2017, SINAMICS DCM Cabinets will be canceled as products and will no longer be actively marketed. A 4-year phase-out period is described in the announcement linked below.

> Read the announcement...

Extending the Warranty For US Markets
The standard 12/18 month warranty on newly-purchased SINAMICS DCM DC Drive Products (DC converters, base drives, enclosed cabinets and control modules) will be extended by two years for a total of 3 years from date of manufacture.

> Read the announcement...

New Base Drive Packages (Kits) Simplify Engineering
SINAMICS DCM base drive packages are available to simplify the engineering process of sizing, selecting and coordinating accessory components required to assemble armature, field and control power circuits when building a DC drive system using a SINAMICS DCM DC converter

> Read the announcement......

New Extended Base Drive Range: 1500 - 2800 A DC
The SINAMICS DCM base drive range has been extended above the existing 1200 A DC maximum offering by adding 20 new Base Drives (10 2Q and 10 4Q) that range from 1500 A to 2800 A DC.

> Read the announcement...

New Firmware v1.4
New firmware to control resolver-equipped DC motors

> Read the announcement...

New CUD kits for SINAMICS DCM DC Drive Products
Four new CUD kits are now available for SINAMICS DCM DC Drive Products that bundle the available control units and connector boards at a reasonable cost.

> Read the announcement...


The SINAMICS DC Master series combines the open-loop and closed-loop control and power units in one device and therefore offer a compact, space-saving design. The AOP30 Advanced Operator Panel and the BOP20 Basic Operator Panel are available for commissioning and local operator control. The interfaces of the CUD and the number of digital inputs and outputs can be supplemented using additional modules - such as the TM15 and TM31 Terminal Modules.


PROFIBUS, PROFINET, and EtherNet/IP communications options

Single-phase connection is possible for units ≤ 125 A

Variance of control units

Field power supply in-line with requirements in the field

24 V DC electronics power supply

Power unit is insulated with respect to ground

Free function blocks are integrated in the standard version and Drive Control Chart

Functionality can be expanded using SINAMICS components

Coated boards and nickel-plated copper busbars (optional)

Wide temperature range

Technical Information

Power range

5 to 24,000 HP (6.3 - 18,000 kW)

Rated DC current

15 to 3,000 A (single converter)

Rated supply voltage

3-ph. 85 to 950 V AC

Rated field DC current

3 to 40 A (optional: 85 A)

Rated frequency

45 to 65 Hz

Degree of protection


Storage and transport temperature

-40 to +70 °C




2Q and 4Q

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Industry Advantages

  • Reliability and robustness
    The highest degree to ensure maximum production

  • Highest dynamic performance
    Increased productivity and finished product quality

  • Integrated intelligence
    Free Function Blocks can be optimally adapted to an application’s requirements for drive-related 
    open-loop and closed-loop control functions (e.g. winder, sectional drive, load sharing, master-slave,
    cross-cutter, etc.) in a decentralized manner that relieves the workload on higher level controls

  • Simple integration into automation solutions
    Comprehensive range of network interfaces: PROFIBUS, PROFINET, EtherNet/IP, standard Ethernet TCP/IP

  • Simple commissioning and parameterization
    Menu-assisted at the AOP30 Advanced Operator Panel with graphics-capable LCD display and plain text display or PC-supported using the STARTER commissioning tool

  • Plant or system availability increased by being able to quickly and simply exchange components
    Components have been designed so that they can be quickly and easily replaced. The available spare parts are assigned to the serial number of the drive unit

  • Flexible expandability in functionality and performance
    The extensive product range and the many options allow the SINAMICS DCM to be optimally adapted to customer requirements - both technically and economically. Different customer requirements relating to the computational performance and speed can be precisely fulfilled with the ability to select between a Standard CUD, an Advanced CUD - or a combination of both

  • Global support and availability
    Large network of qualified system integrators, distributors and Siemens professionals for consultation,
    design, commissioning, service and support worldwide

  • Reduced training time and expense
    The maximum number of identical components is reduced as a result of the extensive  product range of SINAMICS DC MASTER. The seamless and integrated series of SINAMICS DC MASTER Units encompasses a wide current and voltage range. The series of drives is designed to be connected to three-phase line supplies

SINAMICS DC Drives and EtherNet/IP™

DC Drive Ethernet IP

Add the world's leading DC drive system to any Industrial EtherNet-work

High performance SINAMICS DC Master (6RA80) have been enhanced to include connectivity to EtherNet/IP, providing maximum flexibility for industrial Ethernet communication and innovative concepts for those wanting a single network for an entire plant.

Having flexibility to communicate to the most commonly used automation systems via Profinet or EtherNet/IP makes the SINAMICS DC Master drive system perfectly suited for all Industrial Ethernet protocols.

Success Stories for Siemens DC Drives



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SINAMICS S120 Modular Drives

• Retrofit/Modernization
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• Production Efficiency
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Systems Integrator

To improve safety underground, the shaft hoisting system of a hard brown coal mine in Slovenia was upgraded using state-of-the-art technology. Proven DC technology makes a crucial contribution to the high availability of this system

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End User

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