Wide range

Wherever high-speed motors need to be operated with exceptional efficiency and low losses, the SD4S from Sieb & Meyer truly shines. This drive controller series covers power outputs up to 48 kW, offering the right solution for a wide range of applications.

Wide Power Range in Three Voltage Classes

Designed as a true all-rounder, the SD4S from Sieb & Meyer is available in three voltage categories. The smallest housing variant delivers 300 W at 50 VAC or 800 W at 230 VAC and measures just 40 mm in width. In addition to single-phase versions with up to 2400 W at an input voltage of 230 VAC, three-phase versions with up to 48 kW at a supply voltage of 400 V are also available. The latter can also be used with a three-phase input voltage of 230 VAC, albeit with proportionally reduced power. This allows a single product line to cover a wide variety of applications.

More power in less volume

Compared to its predecessor, the SD2S series, Sieb & Meyer has reduced the installation volume by up to 44% while maintaining the same performance. The high efficiency and broad performance range make the SD4S series ideal for use in machine tools, dental milling machines, and precision machining systems – for example, in the watchmaking industry. Wafer dicing machines in semiconductor manufacturing, turbo compressors, and highly dynamic servo applications are also among the potential areas of application.

Control at a new level – including galvanic isolation

On the control side, the SD4S supports sensorless asynchronous motors up to a rotating field frequency of 6,000 Hz (360,000 rpm) as well as synchronous and IPM motors up to 4,000 Hz (240,000 rpm). This broad range is currently unique on the market and creates new degrees of freedom in drive design. For motors with low insulation resistance – especially in the lower power range – the SD4S also offers galvanic isolation of the thermal contact.

Networkable, safe, and easy to parameterize

All devices feature the Safe Torque Off (STO) safety function as standard. Communication with the controller is via CANopen and Modbus TCP; a multi-protocol real-time Ethernet interface for EtherCAT (CoE), Profinet IO, or Powerlink is available as an option. An integrated real-time clock enables precise analysis of faults and process events.

Parameterization is performed via a robust Ethernet interface – a clear advantage over interference-prone USB connections in industrial environments. The central tool is the drivemaster4 software from Sieb & Meyer, which provides configuration, commissioning, and simulation for the entire SD4x family. With the complementary SpindleServiceTool (SST), spindle manufacturers in particular can implement individual run-in sequences without an external controller.

Furthermore, the Motor Analyzer, familiar from drivemaster2, has been further developed. It enables precise simulations of the entire control behavior, including operating points, characteristic curves, and output currents. A new FFT analysis provides values ​​for harmonic content (THDi/THDu) – a valuable tool for evaluating motor heating and system efficiency.