Frequency Converters for Milling, Drilling and Grinding Spindles

The Challenges

High-speed spindles are the key components of a machine tool. Only when operated in an optimal way, the desired machining accuracy, productivity and service life of the whole machine is guaranteed. The used high-speed motors require a suitable frequency converter due to the necessary high rotating field frequency and the low rotor volume. The frequency converters by SIEB & MEYER provide the necessary rotating field frequency and guarantee a low motor heating thanks to the special control technology. The motor heating has a significant impact on the machining accuracy and the service life of high-speed spindles, especially when it comes to the service life of bearings.


SD2S Frequency Converter

The Specialist for High-speed Applications

Powerful, flexible, compact – these words describe the SIEB & MEYER drive SD2S regarding high-speed applications.

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Drive Amplifier With Three-level Technology

The Drive Amplifier SD2M by SIEB & MEYER opens up new opportunities for the motor design.

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The Universal Drive Solution for Multi-axis Applications

The digital drive system SD2 can be connected to your controller via the real-time bus SERVOLINK 4 using fiber optic cables. This design allows a direct and fast access to all relevant drive parameters.

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The Compact Drive Solution

Powerful, compact and reduced to the essential – this is the drive amplifier SD2B. The provided control technologies allow for sensorless operation of synchronous and asynchronous motors with speeds of up to 120,000 rpm.

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The Main Spindle Drive for Machine Tools

The vector-controlled frequency converter FC71 is conceived for machine tools used for most complex tasks such as positioning, hard threading and tool changing within the power range of 100 - 150 kVA.

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The Main Spindle Drive for Machine Tools

The vector-controlled frequency converter FC72 is a low-cost drive solution and conceived for machine tools used for complex tasks such as positioning, hard threading and tool changing within the power range of 13-30 kVA.

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The All-in-one Solution for High-speed Applications

Due to an integrated multi voltage power supply unit with power factor correction (PFC) SD2T in compact table top design ensures the world wide use with no customizing needed.

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Customized Solutions

With our highly qualified development team and in-house production we reach maximum innovation and flexibility.

We are committed to meet our customers' requirements in regard to the quality of our products. The customer's benefit is our top priority. Satisfied customers are the confirmation of our good job.

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Intensive consulting during concept and specification development

  • 50 years of expertise
  • cooperation partners for different sectors (from automotive to cutting industry)

The complete expert knowledge in-house

  • power and control electronics
  • field bus systems
  • FPGA and microcontroller programming
  • Windows® or Linux™ programming
  • circuit simulation and circuit layout
  • thermal simulation
  • mechanical 3D construction
  • EMC
  • assistance for certification projects (UL, NRTL, CSA, TÜV)

Flexibility of an independent, middle-size company

  • short decision-making paths
  • speedy implementation
  • made in Germany

Qualified support for product launch

  • initial operation of the complete system

Extensive testing

  • EMC tests
  • power tests
  • climate tests

Case Studies

Experienced in high-volume production of customized drive systems, SIEB & MEYER is the right partner for your projects. From project planning to serial production we are at your disposal.

High-speed Frequency Converter for Low-voltage Manufacturing Spindles in Machine Tools

On behalf of a premium manufacturer of motor spindles SIEB & MEYER has developed a compact frequency converter for the sensorless operation of manufacturing spindles with asynchronous and synchronous motors in the low-voltage range.

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