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KEB COMBIVERT F0 to F6 Drives
Get a quote FAST for all KEB combivert drives from Wake Industrial; receive a response in as fast as 15 minutes. Request a quote now or call 1-919-443-0207. 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.
Technical Selection Guide
Match the complete type code. Retain every character, separator, and suffix from the nameplate. The family designation identifies only part of the configuration; control hardware, power-circuit options, and special versions can differ within one family.
Check voltage and current. Confirm supply voltage, phase arrangement, and continuous output current. Compare the motor nameplate and the required overload duty. Maximum or short-time current is not a continuous operating rating.
Confirm control and feedback. Identify the motor type, control version, encoder interface, command signals, and communication hardware. Preserve the application parameter set so the replacement can reproduce the required machine behavior.
Review braking and cooling. Check whether braking hardware is internal or external and match the resistor arrangement. Verify the housing, cooling method, ambient limits, and switching frequency because these affect installation fit and thermal loading.
KEB COMBIVERT F0 Frequency Inverters
KEB F0 frequency inverters provide adjustable voltage and frequency for three-phase motor speed control. Sizes 07 through 12 include 200 V and 400 V configurations, with maximum standard motor ratings from 0.75 to 4 kW across those configurations. Output frequency is adjustable from 0 to 408 Hz. The 200 V versions use single-phase input as standard, with a three-phase option, while the 400 V versions use three-phase input.
The control interface accepts voltage or current speed references and provides programmable inputs, relay signaling, and transistor outputs. Seven parameter sets allow different operating settings to be selected for machine cycles. Acceleration and deceleration settings, slip compensation, and DC braking further shape motor behavior. Braking-module requirements and the original control settings should be checked when selecting a replacement.
Part number | Unit size | Motor rating at 400 V | Rated output at 400 V |
09 | 1.5 kW | 4.1 A | |
10 | 2.2 kW | 5.8 A | |
12 | 4 kW | 9.5 A |
KEB COMBIVERT F1 Frequency Converters
KEB F1 converters regulate the speed of three-phase motors through two power-circuit configurations. F1-K provides overload reserves of up to 200% of rated current, subject to size and loading duration, and includes a braking transistor. F1-P is intended particularly for pumps and fans, with a higher motor-power emphasis and no internal braking transistor. Applications requiring resistor braking therefore need the correct external braking arrangement on F1-P.
The 400 V power circuits accept three-phase input from 305 to 500 V and use IP20 protection. F1-K operating ambient limits extend from -10 to +45 °C; F1-P is limited to -10 to +40 °C. Switching frequency also affects heat loss. Replacement selection must account for the power-circuit version, output current, and cabinet cooling conditions as well as the motor rating.
Part number | Input class | Maximum motor rating | Rated output current |
400 V / 3-phase | 7.5 kW | 16.5 A | |
400 V / 3-phase | 11 kW | 24 A | |
400 V / 3-phase | 15 kW | 33 A |
KEB F2 Drive Inverters
KEB F2 drives, also identified as COMBIDRIVE F2, support speed and current regulation, angular synchronization, and single-axis positioning with the appropriate control configuration. Their power circuits provide overload reserves of up to 200% of rated current, depending on size and loading duration. These capabilities make the control hardware and application settings central to a replacement match, particularly where an axis must remain synchronized with another machine movement.
F2 sizes 13 through 27 span standard motor ratings from 5.5 to 160 kW in the 400 V class. The power circuits use three-phase input from 305 to 500 V and IP20 protection. An internal braking transistor is provided through size 22; sizes 23 through 27 use an external braking option when required. The permitted output frequency depends on the installed control board.
Part number | Input class | Maximum motor rating | Rated output current |
400 V / 3-phase | 7.5 kW | 16.5 A | |
400 V / 3-phase | 15 kW | 33 A | |
400 V / 3-phase | 30 kW | 60 A |
KEB COMBIVERT F3 Static Frequency Inverters
KEB F3 static frequency inverters combine adjustable motor frequency with programmable speed references and control inputs. The 200 V configurations cover standard motor ratings from 5.5 to 22 kW, while 400 V configurations cover 0.75 to 75 kW. Both voltage classes provide a 0 to 400 Hz output range with 0.01 Hz resolution. Rated current changes with voltage class, even when the inverter size is the same.
The F3 control interface accepts 0 to 10 V and 4 to 20 mA references, with programmable digital inputs, relay signaling, and an analog monitoring output. Nine frequency settings, including the jog reference, support operation at selected speeds. Adjustable acceleration and deceleration behavior includes S-curve options. These functions allow the drive to follow different machine operating steps through its configured terminal signals.
Part number | Output frequency | Frequency resolution | Digital frequency accuracy |
0 to 400 Hz | 0.01 Hz | 0.01% |

KEB COMBIVERT F4 Frequency Inverters
KEB F4 drives use distinct control versions for different motor-control requirements. F4-S Standard provides an adjustable voltage-to-frequency characteristic with autoboost and slip compensation. F4-C Compact adds a configurable control environment with eight parameter sets, a PI controller, programmable inputs and outputs, speed search, and electronic motor protection. These functions allow operating references, acceleration behavior, and status signals to be adapted to the machine.
F4-F uses field-oriented control and supports speed regulation, torque control, synchronization, and positioning functions. Its two encoder interfaces serve different feedback and signal-processing roles, with compatibility determined by the fitted interface. The type code identifies the control version, housing, braking transistor, filter combination, and standard supply configuration. A matching power rating alone does not establish interchangeability between F4-S, F4-C, and F4-F drives.
Part number | Control version | Input class | Switching frequency |
Compact | 400 V / 3-phase | 4 kHz | |
Standard | 400 V / 3-phase | 4 kHz | |
Field-oriented | 400 V / 3-phase | 8 kHz |
KEB COMBIVERT F5 Axis Drives
KEB F5 combines frequency-inverter and servo-drive configurations across a 0.37 to 900 kW range. Basic and Compact controls provide open-loop operation, while Multi supports asynchronous and synchronous motors with feedback. Application versions include ASCL for encoderless asynchronous-motor control and SCL for synchronous-motor control without a feedback device. The control version determines which motor and feedback functions are available.
F5 Compact provides eight programmable digital inputs, two analog inputs, and eight parameter sets. Its functions include S-curve ramps, PID control, DC braking, and electronic motor protection. Multi adds capabilities such as encoder-based positioning and synchronization. Encoder interfaces, fieldbus operators, cooling arrangements, and safety options must be matched to the installed configuration. For current sizing, distinguish continuous rated output from the higher current available for short operating demands.
Part number | Input class | Motor power | Rated output current |
400 V / 3-phase | 1.5 kW | 4.1 A | |
400 V / 3-phase | 2.2 kW | 5.8 A | |
400 V / 3-phase | 4 kW | 9.5 A |
KEB COMBIVERT F6 Drive Controllers
KEB COMBIVERT F6 drive controllers support asynchronous, synchronous, IPM, and synchronous reluctance motors with encoder feedback or encoderless ASCL/SCL control. The 400 V models cover typical motor ratings from 4 to 450 kW. Integrated functions include motor-temperature monitoring, brake control, PID regulation, and positioning. Air- and liquid-cooled versions are available, with cooling arrangements determined by housing size and configuration.
F6 COMPACT provides EtherCAT or VARAN communication, CAN, RS232/485 diagnostics, and Safe Torque Off. APPLICATION offers additional network options, including PROFINET and EtherNet/IP, plus optional encoder-based speed and position safety functions. PRO supports speed-related safety functions without a safety encoder when equipped with the appropriate safety module. Communication, encoder interfaces, and safety equipment therefore need to be matched to the complete F6 type code.
Part number | Input class | Typical motor power | Rated output current |
15.F6.K12-3521 | 400 V / 3-phase | 11 kW | 24 A |
18.F6.K13-3421 | 400 V / 3-phase | 22 kW | 50 A |
20.F6.K13-3421 | 400 V / 3-phase | 37 kW | 75 A |
