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

 

Customized is Standard

In many cases modern machines and applications are very specialized and therefore the use of standard drive components would be a compromise. Under such circumstances only a customized solution will fully meet the special requirements. The list of possibilities begins with hardware adjustments, such as special housings or interfaces and also offers completely new defined devices and functions. We are open to your ideas. 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.

Take advantage of our know how in established standard components as a basis for your project.

 

 

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 Multi-spindle Operation in PCB Drilling Machines

SIEB & MEYER FC2 CUSTOM VFD FREQUENCY CONVERTER

On behalf of a manufacturer of PCB drilling machines SIEB & MEYER has developed a compact and cost-effective frequency converter that is adapted to the existing machine unit and permits sensorless operation of up to eight high-speed spindles.

Client requirements

The client is a manufacturer of PCB drilling machines and wished for a frequency converter that can be optimally integrated into his existing machine construction.

The existing servo amplifiers should supply the frequency converter with power from the DC link.

For the purpose of saving costs one central frequency converter should operate up to eight high-speed spindles in the speed range up to 480,000 rpm without sensor.

Customized Solution by SIEB & MEYER:

The customized solution is based on the serial device FC2 that features a device topology with controlled DC link. This permits the operation of low-inductive asynchronous motors without additional motor chokes via pulse amplitude modulation (PAM) up to an output frequency of 8,000 Hz (480,000 rpm). The functional spectrum of the standard device already includes the parallel operation of up to eight asynchronous motors as well as the separate evaluation of the temperature sensors.

SIEB & MEYER adapted the electronics of the power supply unit and the device construction to the machine conditions. During this process the engineers were able to reduce not only the installation space but also the wiring work.

The most important details in short:

  • Supply voltage 350 VDC

  • PAM modulation, controlled DC link

  • output: 3 x 0..230 VAC, 0..8,000 Hz, S1: 13.2 kVA

  • integrated evaluation of up to eight temperature sensors

  • sensorless operation of up to eight asynchronous motors

 

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

SIEB & MEYER CUSTOM SD2T VFD FREQUENCY CONVERTER

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.

Client requirements:

The client is a globally acting premium manufacturer of motor spindles. For the purpose of expanding their spindle series the client required a new, customized frequency converter that, compared to the existing solution, made higher output frequencies and easier handling possible. The construction volume of the new, high-power frequency converter should remain the same, though.

Since the client distributes only one product worldwide, the frequency converter must be able to cope with different mains voltages and frequencies as well as many different operational environments, for example, the household mains.

The frequency converter should flexibly operate manufacturing spindles with asynchronous and synchronous motors in the low-voltage range with a maximum operating voltage of 3 x 80 VAC. Due to the size of the spindles, there was not enough space to integrate an additional speed sensor. Therefore, the spindles must be operated without sensor.

The customized solution by SIEB & MEYER:

In order to enable worldwide use SIEB & MEYER has implemented a wide range voltage input with active power factor correction (PFC). A DC/DC converter limits the maximum output voltage.

Compared with the previously used drive solution SIEB & MEYER has managed to increase the output power from about 160 VA to 420 VA – with unchanged construction volume.

The control technology (hardware and software) of the new, customized frequency converter is based on the well-proven series SD2SAn existing plug-in operating terminal was integrated in the device and expanded with the client's additional requirements.

The most important details in short:

  • wide-range power input with PFC, 90..230 VAC, 50/60 Hz

  • integrated EMC filter for category C1

  • output: 3 x 0..80 VAC, 0..2,000 Hz, S1: 420 VA

  • integrated operating unit

  • sensorless operation of synchronous and asynchronous motors

  • automatic winding detection