High-Speed Drives

COMBIVERT F6 High-Speed / COMBIVERT S6

The COMBIVERT F6 High-Speed and COMBIVERT S6 servo drives are specifically designed for applications involving very high speeds and output frequencies. They provide precise, energy-efficient drive solutions for spindles, turbo blowers, compressors, vacuum pumps and other high-speed applications with output frequencies of up to 2,000 Hz.

Thanks to powerful control algorithms, high switching frequencies and the use of matched sine wave filters, the drive controllers ensure optimum motor protection, minimal losses and a long service life for both the motor and the system. Flexible safety features, versatile motor technologies and scalable power ranges enable a perfect fit for a wide range of machine and plant concepts.

Highlights

Drive controllers with power ratings of up to 900 kW / 1,600 A
Integrated safe speed monitoring
Motor protection and optimum system performance with sine wave filter
Precise encoderless control of a wide variety of motor types
Up to 120,000 rpm and output frequencies of up to 2,000 Hz
Integrated power supply for magnetic bearing controllers
3C3 protective coating for aggressive environments

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Technical data

COMBIVERT F6 High-Speed

Power class	3-phase 400 V
Power range	7.5 kW … 900 kW
Rated currents	9.5 A … 1,600 A

Device variant	APPLICATION	PRO
Fieldbus communication	EtherCAT, PROFINET (IRT), EtherNet/IP, POWERLINK, Modbus/TCP	EtherCAT, PROFINET, ModBus/TCP
Communication interfaces	CAN, diagnosis RS485/232	CAN, diagnosis RS485/232, Ethernet, ModBus/RTU
Functional Safety	STO, SBC and optional encoder-based speed/position-dependent safety functions	STO, SBC and encoderless speed-dependent safety functions
Safety profile	Safety over EtherCAT (FSoE), PROFIsafe	Safety over EtherCAT (FSoE)
Encoder interfaces	Multi-encoder	Multi-encoder optional

Key features at a glance – COMBIVERT F6 High-Speed

Air- or liquid-cooled, flush-mounted or through-hole mounting
Flexible switching frequencies from 2 kHz to 16 kHz
High output frequencies up to 2,000 Hz
High operating temperature of 55 °C for liquid-cooled variants
Encoderless speed control of IPM, PM, asynchronous and synchronous reluctance motors
Reliable buffering of the magnetic bearing power supply
Multi-Ethernet interface for flexible connection to control systems
Integrated encoderless safety functions for reliable speed monitoring
Multi-fieldbus interface for plug-and-play connection to the control level

Technical data

COMBIVERT S6

Power class	1-phase 230 V	3-phase 400 V
Power range	0.75 kW and 1.5 kW	0.75 kW … 7.5 kW
Rated currents	4 A and 7 A	2.6 A … 16.5 A
Peak currents (3 s / 60 s)	2 x I_n / 1.5 x I_n	2.5 x I_n / 2 x I_n

Device variant	APPLICATION	PRO
Fieldbus communication	EtherCAT, PROFINET (IRT), EtherNet/IP, POWERLINK, Modbus/TCP	EtherCAT, PROFINET, ModBus/TCP
Communication interfaces	CAN, diagnosis RS485/232	CAN, diagnosis RS485/232, Ethernet, ModBus/RTU
Functional Safety	STO, SBC and optional encoder-based speed/position-dependent safety functions	STO, SBC and encoderless speed-dependent safety functions
Safety profile	Safety over EtherCAT (FSoE), PROFIsafe	Safety over EtherCAT (FSoE)
Encoder interfaces	Multi-encoder	Multi-encoder optional

Further key features at a glance – COMBIVERT S6

High overload capacity of up to 250 % for maximum dynamics
Suitable for various motor technologies, with or without encoders
Integrated, low-leakage mains filter (< 5 mA), optionally available without filter
Compact book format for space-saving control cabinet installation
Wide range of options for motors, encoders and communication interfaces
Integrated safety technology with scalable safety functions

Functional Safety

Encoderless safety functions

KEB drives offer scalable safety functions directly within the drive controller. In the PRO variant, the COMBIVERT F6 and S6 enable encoderless safety. Here, safety functions and limit values can be flexibly configured via digital I/Os and/or Safety over EtherCAT (FSoE). Furthermore, safe encoderless speed monitoring can be used regardless of the motor employed, making it suitable for a wide range of applications. This ensures that the drive does not exceed a set speed limit without requiring any additional effort.

Advantages

Cost savings compared to conventional safety solutions
Avoidance of dangerous speed ranges without additional effort
Less wiring – no need for contactors or other traditional safety components
Fast response – direct evaluation of safety functions within the drive
Easy to use – up to eight different safety settings per function

In use in these areas of application

Turbo Compressors and Blowers

In turboblower applications, precise control, high speeds and maximum energy efficiency play a crucial role. Find out how KEB drive solutions reliably meet the requirements of modern turboblowers and contribute to cost-effective, low-maintenance operation.

Find out more

Woodworking Machinery

High-speed spindles in woodworking machines require precise speed control, high dynamic performance and stable operation at very high speeds. KEB drive solutions ensure consistent machining quality, high repeatability and energy-efficient processes – even under varying loads and during demanding machining tasks.

Find out more