KEB Combivert Drives | F0 – F6 | Industrial Inverter Solutions for Every Application

KEB Combivert drives (F0, F1, F2, F3, F4, F5, and F6) are a full range of high-performance frequency inverters and servo drives designed for demanding industrial applications. Engineers, plant owners, and automation professionals rely on these drives for precise motor control, energy efficiency, and robust operation across manufacturing, material handling, packaging, and more. Wake Industrial supports the entire Combivert KEB lineup with sales, repairs, refurbishment, and surplus purchasing, ensuring you can keep your operations running with minimal downtime. Wake Industrial is an independent supplier and repair service; we are not an authorized distributor for KEB.

Whether you need to buy a KEB Combivert drive, have one repaired or replaced, or want to sell your surplus unit, Wake Industrial is here to help. Call us at 1-919-443-0207 or use the form on this page to request a repair or get a quote on any KEB drive. Below, we provide a technical overview of each Combivert series (F0 through F6), including key specifications and features for industrial use cases.

Combivert F-Series Overview

KEB Combivert F0 – Control Cabinet Drives

The KEB Combivert F0 series represents KEB’s control cabinet drive solutions. These were engineered as high-efficiency motor control cabinets for automated systems. F0 Combivert drives often come as pre-packaged control cabinet units that house multiple drive components and power supplies in a single enclosure. This design provides a reliable platform for managing motors in industries like manufacturing, material handling, and processing.

Key features of the F0 series include a modular design (for easy expansion and integration into existing control panels) and sophisticated control algorithms that optimize motor performance. The F0 drives support various industrial communication protocols, enabling seamless connectivity to PLCs, HMIs, sensors, and other devices in an automation line. They are built with robust materials to withstand vibration, dust, and heat on the factory floor. Advanced protective functions (for overcurrent, overload, and power fluctuations) are integrated to safeguard both the drive and the motor.

KEB Combivert F1 – Frequency Converters

The KEB F1 Combivert series introduced a new generation of frequency converters (variable frequency drives) with a focus on precision and energy efficiency. These drives are designed to control the speed and torque of AC motors in a wide range of applications, from simple conveyor belts to complex processing machines. They support both standard asynchronous (induction) motors and many synchronous motors, adapting to different torque and speed requirements with ease.

Performance and control: F1 drives feature sophisticated control algorithms that ensure smooth acceleration and deceleration, reducing mechanical stress on machines. This prolongs the life of gearboxes and belts by avoiding jerky starts/stops. They offer both V/Hz (voltage/frequency) control for simplicity and sensorless vector control for higher performance. Features like dynamic torque response and slip compensation help maintain stable motor speed under varying loads.

Energy efficiency: The F1 series was engineered for efficiency – it includes energy-saving features such as automatic sleep modes (which idle the motor when no demand is present) and optimized motor flux control to reduce power draw during light loads. Torque control algorithms adjust the motor current to the minimum needed, cutting down on waste heat and energy costs.

Rugged and user-friendly: Built to handle industrial conditions, F1 drives are enclosed to protect against dust and vibration, and they can tolerate a wide ambient temperature range. Setup and monitoring are made easy via an intuitive interface – parameters can be programmed through a keypad or PC software, and fault diagnostics are readily accessible. The drivers can communicate over multiple protocols (for example, Modbus or Profibus modules were available), allowing integration into nearly any automation system.

KEB Combivert F2 – Drive Inverters

The KEB Combivert F2 series expanded on the capabilities of the F1 with a more comprehensive drive and control solution. Often described as a configurable “drive package,” the F2 series offered a modular approach: users could select from various inverter modules, power options, and even matching KEB motor packages to create an optimal system for their needs. This made the F2 extremely flexible across different power requirements and applications.

Modular design: F2 drives are built with plug-and-play modularity. For example, a base drive unit could be fitted with different option cards for encoder feedback, I/O expansion, or fieldbus communication (CAN, DeviceNet, etc.), tailoring the drive to the application. This modularity simplifies maintenance and inventory management – many models in the F2 series share common parts, so keeping spares is easier.

Auto-tuning and advanced control: To ease commissioning, F2 inverters include auto-tuning functions that can automatically identify motor parameters and optimize the control loops. This ensures quick setup and optimal performance without deep manual calibration. The drives support advanced control modes, including sensorless vector control and even basic servo positioning for simpler single-axis movements. They also incorporate safety and protection features (e.g. overvoltage ride-through, stall prevention, brake choppers for rapid decel) that protect both the drive and mechanical system.

Industrial connectivity: Like other KEB drives, the F2 series supports numerous communication standards. This includes analog/digital I/O for local control and options for fieldbus interfaces (Profibus DP, CANopen, etc.) to network with central PLCs. Such connectivity and coordination features make the F2 suitable for complex, multi-axis systems where multiple drives must work in concert (for example, in coordinated motion for packaging or assembly machines).

Durability: The F2 Combivert drives are engineered for harsh conditions – they use industrial-grade components and effective cooling (forced air or panel-mounted heatsinks) to operate reliably in high-temperature and high-vibration environments. The enclosures are typically IP20 (suitable for control cabinet mounting) with options for higher IP ratings if needed.

KEB Combivert F3 – Static Frequency Inverters

The Combivert F3 series is known as a line of “static frequency inverters,” indicating its role in precise frequency and speed control for industrial motors. The F3 series was engineered to meet evolving needs in the early 1990s for better process control and efficiency. These drives emphasize high-performance regulation, reliability, and the ability to fine-tune motor operation for complex processes.

Precision and efficiency: F3 drives allow fine adjustments of output frequency and motor speed, which is critical in processes like machine tooling, printing, or textile manufacturing where slight speed deviations can affect quality. They provide tight regulation of motor torque and RPM and can run motors at non-standard frequencies (useful for test stands or converting 50Hz <-> 60Hz supplies in international equipment). By optimizing voltage and frequency output, the F3 can boost throughput while also reducing energy consumption when full speed is not required.

Rugged construction: This series features robust construction and cooling. Many F3 units have sizable heatsinks or fans to maintain safe temperatures during continuous operation. This ensures consistent, reliable performance even in harsh environments (temperature swings, dust, or 24/7 operation). The design is aimed at long-term service with minimal downtime.

Integration: The F3 Combivert drives support a variety of interface options for integration into automation systems. They often include standard analog inputs for speed setpoints, digital I/O for run/stop commands and fault signals, and optional plugin cards for fieldbus communications (e.g., connecting to a central control system via Modbus or similar). This diverse connectivity allows the F3 to fit into both modern PLC-controlled systems and simpler analog control setups. Additionally, the F3 series comes with customizable software parameters enabling OEMs or end-users to tweak the driver’s behavior (for example, custom ramp profiles or PID settings for process control).

Ease of use: Despite being an older generation drive, the F3 was designed with a user-friendly interface for its time. Parameter codes could be set via an onboard keypad/display or through a serial interface using KEB’s PC software. This makes commissioning and troubleshooting relatively straightforward. The drives also include comprehensive diagnostics and fault logging, so maintenance teams can quickly identify issues.

KEB Combivert F4 – Frequency Inverters (Classic)

The KEB Combivert F4 series is a legendary frequency inverter line that set a new benchmark for industrial drives when it was introduced. The KEB F4 was produced and supported for nearly two decades, a testament to its popularity and reliability. It was eventually succeeded by the F5, but many F4 drives are still in operation today. Wake Industrial specializes in keeping these units running through expert maintenance and replacement services.

Power and performance: The F4 series spans a range of drive sizes, commonly from fractional kilowatt ratings up to around 7.5 kW or 15 kW (and some models reach ~22 kW). This made the F4 suitable for most mid-sized motor applications. It introduced advanced vector control capabilities for its time, allowing both open-loop (sensorless) and closed-loop (with encoder feedback) control of motors. Whether driving a standard 3-phase induction motor or a synchronous motor, the F4 could adapt its control mode to provide excellent speed regulation and torque response.

Notable features: The Combivert F4 included an array of features that were cutting-edge in the 1990s: programmable acceleration and deceleration ramps, DC braking functions for quick stops, and switchable parameter sets (so users could store multiple motor profiles or configurations in one drive). It also had a built-in PID controller, allowing the drive to directly control a process variable (like pressure or flow) by adjusting motor speed – a powerful feature for process industries​. The F4’s user interface and diagnostics were also well-regarded; an optional LCD or LED keypad could display plain text messages for status and fault codes, simplifying troubleshooting.

Integration and options: KEB provided the F4 with various expansion options. Users could equip the F4 with different communication modules to interface with higher-level systems – for example, Profibus DP for factory networks or CAN for machine-level integration. The drive’s I/O could be configured for things like controlling an external brake or reading a temperature sensor (PT100) for motor thermal protection. This flexibility meant the F4 could be the central drive controller in an application, coordinating with sensors and actuators directly.

KEB Combivert F5 – Axis Inverter Drives

The Combivert F5 series is a significant leap in technology and capability, serving as KEB’s standard drive platform through the 2000s and into the 2010s. It is an axis drive system that can function as a frequency inverter for standard motors or as a high-performance servo drive for precision motion – truly a flexible workhorse. The F5 series covers an extremely wide power range from 0.37 kW up to 900 kW in output power​, covering everything from small machines to large industrial systems.

High-level features: The F5 introduced KEB’s proprietary sensorless vector control algorithm called KEB-SMM, which provides highly efficient motor operation without needing encoder feedback​. This means even in open-loop mode, the F5 can maintain excellent torque and speed control, often rivalling closed-loop performance. For applications that do require feedback (for positioning or tighter speed regulation), the F5 supports encoder inputs and can run as a full servo drive. The drive’s control software is modular and powerful, offering features like eight programmable parameter sets, PID control loops, dynamic braking and torque limit functions among many others​.

User interface and programming: A hallmark of the F5 is its intuitive programming interface. The drive can be configured via the front keypad with a multi-line display that guides user in plain text (multiple languages available). For more advanced commissioning, KEB’s Combivis software can connect to the F5 using a special KEB F5 programming cable (HSP5 interface) and provide a PC-based interface to tune parameters, update firmware, or monitor performance. (If you need a KEB F5 programming cable, Wake Industrial can assist in sourcing that accessory as well.)

Connectivity: The F5 Combivert supports an impressive array of fieldbus communication options. Out-of-the-box it has analog and digital I/O for simple control, but it can be equipped or ordered with modules for CANopen, PROFIBUS, DeviceNet, Interbus, Modbus/TCP, EtherNet/IP, EtherCAT, POWERLINK, PROFINET, and more​. This means the F5 can seamlessly integrate into virtually any factory network or machine control architecture, a huge plus for system integrators. Additionally, safety features like Safe Torque Off (STO) are available to meet modern safety standards – an important consideration for machine builders.

Scalability and variants: The F5 series has numerous hardware variants (different housing sizes, cooling methods, and mounting styles). Smaller F5 drives are typically panel-mounted with air cooling, while the largest F5 units (hundreds of kW) might be floor-standing with high-capacity fans or water cooling. Despite the physical differences, KEB maintained functional consistency across the entire power range of F5 drives​. This means an engineer who learns one F5 drive can operate any other, and tools/spare parts are standardized as much as possible. There are also specialized F5 variants (for example, F5 drives dedicated to elevator control with customized firmware, or regen units).

Examples – 09.F5C1B-3A0A and 10.F5C1B-3A0A: To illustrate the F5’s capabilities, consider these two common models:

• KEB 09.F5.C1B-3A0A – This is a 1.5 kW, 3-phase 400 V F5 inverter. It delivers up to 8.9 A output current and features short-circuit monitoring and protection. The unit is housed in an IP20 enclosure and operates in ambient temperatures from -10°C to +45°C​.
• KEB 10.F5.C1B-3A0A – This is the next size up, rated for 3-phase 400 V with a 12.5 A max output (roughly 2.2 kW). It also has an IP20 enclosure. In addition to the standard protection, this model includes field-oriented (FOC) vector control for improved motor performance​.

Both models (09F5C1B 3A0A and 10F5C1B 3A0A, as they are sometimes listed online without formatting) are part of the KEB F5 Drive family and exemplify the series’ blend of compact size and advanced features. Wake Industrial can provide these F5 drives at competitive prices and repair them if they develop faults. If you’re concerned about KEB F5 Drive Prices, rest assured that refurbished units from Wake Industrial offer a cost-effective alternative to sourcing new drives, all backed by our 1-year warranty.

KEB Combivert F6 – Next-Generation Inverter/Servo Drives

The Combivert F6 series is KEB’s current flagship drive technology, representing the new generation of drives that combine frequency inverter and servo drive functionality in one platform​. The F6 series is designed to handle advanced performance requirements, higher safety standards, and modern connectivity needs of today’s industry. Wake Industrial not only supplies refurbished F6 drives but also offers repair services to support customers who have adopted this cutting-edge series.

One drive for all motor types: The F6 drive controllers cover a power range from 2.2 kW up to 450 kW, available for both 3-phase 230 V and 400/480 V systems​. They can control asynchronous AC motors, synchronous servomotors, interior permanent magnet (IPM) motors, and even synchronous reluctance motors – all with or without encoder feedback. This universal motor control capability means the F6 can be deployed in virtually any application, simplifying drive selection for OEMs.

Integrated safety: With the F6, KEB places a strong emphasis on functional safety. Even the base Compact variant provides STO (Safe Torque Off) functionality built-in​. Higher variants (Application and Pro) offer advanced safety options like SBC (Safe Brake Control) and encoder-based safety functions (safe speed, safe position, etc.) to meet SIL2/SIL3 or PLe requirements. These safety features are built according to international standards and are crucial for applications like robotics, presses, or anywhere an unexpected movement could be hazardous. By having safety integrated, the F6 can eliminate the need for external safety relays or contactors to cut motor power in an emergency, simplifying system design.

High-performance and precision: The Combivert F6 is built for speed and precision. It has a fast control loop and supports dual-channel encoder inputs for extremely precise servo positioning tasks​. For example, you can have one encoder on the motor and one on the load for dual-loop control, ensuring high accuracy in applications like CNC machines. The F6 also boasts excellent repeatability and response, making it suitable for highly dynamic motion control (pick-and-place robots, for instance). In terms of output, it can provide high peak currents (up to 1.8× the rated current for short durations) to handle overloads or acceleration demands​.

Modular cooling and form factor: To address installation constraints, the F6 series offers various cooling configurations: standard air-cooled units, push-through mounting (where heat sinks extend out the back of a panel), and liquid-cooled versions for the highest power densities​. The drives are built in a compact “bookstyle” form factor – slim and tall – to save cabinet space and allow side-by-side mounting. This is valuable for machine builders trying to pack more equipment into smaller control cabinets.

Connectivity and Industry 4.0 readiness: The F6 shines in modern connected environments. It supports real-time Industrial Ethernet protocols such as EtherCAT (standard) and options for PROFINET, EtherNet/IP, POWERLINK, Modbus TCP, and others​. These enable deterministic communication with PLCs and motion controllers at cycle times as low as sub-millisecond. Additionally, the F6 includes interfaces like CAN and RS485 for backward compatibility or simpler networks​. Diagnostic connectivity is also modernized – for instance, the drive can be accessed via Ethernet for remote diagnostics, and KEB’s Combivis software can connect locally or even through a Bluetooth adapter. This makes the F6 series IIoT-ready, capable of streaming data about performance and status in real time to higher-level systems or cloud platforms for predictive maintenance.

Flexibility through customization: Recognizing that one size doesn’t fit all, KEB made the F6 highly customizable via plug-in option modules. Need additional I/O? There’s an option card for that. Need a different feedback interface (Resolver, EnDat, BiSS, etc.)? You can add the appropriate module. This plug-in approach means you only pay for the features you need, and it allows easy upgrades in the field. For example, if down the line you want to add Ethernet/IP communication, you can insert the module into the existing drive.

Get a Quote or Repair for Your KEB Combivert Drive from Wake Industrial

No matter which KEB Combivert drive series you use – from a legacy F0 control cabinet to a modern F6 inverter – Wake Industrial is your reliable partner for keeping these drives operational. We understand the technical nuances of each model and offer full support including:

• Repair Services: Expert troubleshooting and repair to fix faults, replace damaged components, and restore drives to optimal function. We handle everything from routine maintenance (capacitor reforming, fan replacement) to complex board-level repairs.
• Replacement & Sales: Quick supply of refurbished KEB drives (F0–F6) at competitive prices. Each unit is tested under load. This is a cost-effective way to get your system back up if any of your KEB drives has failed.
• Refurbishment: We can take your old or faulty KEB drive and fully refurbish it – cleaning, repairing, and testing – so you have a like-new spare ready to go.
• Surplus Purchasing: If you have excess or retired KEB Combivert drives, we will buy your surplus. This recoups value for you and helps us maintain stock for other customers who need those models.

Contact us today to discuss your needs. Call 1-919-443-0207 to speak with a knowledgeable representative right away (no complicated phone menus – you’ll get a real expert on the line) or fill out the inquiry form on this page to request a fast quote or schedule a repair. We typically respond within fifteen minutes during business hours. Let Wake Industrial help you maximize the uptime of your KEB Combivert F-series drives – we’re standing by to provide professional, timely service and solutions tailored to your operational standard.