KEB COMBIVERT 07.F5.B1B-3B0A 0.75kW Frequency Inverter for Industrial Motor Control
The KEB COMBIVERT 07.F5.B1B-3B0A is a compact frequency inverter from the F5-BASIC series, designed to control the speed of three-phase induction motors in industrial automation applications. This 0.75 kW drive operates on a wide input voltage range of 3-phase 305-500 V AC or 420-720 V DC, making it suitable for global deployment. The COMBIVERT F5 series is known for its robust construction, modular software structure, and versatile control capabilities, suitable for applications such as conveyor systems, packaging machinery, pumping stations, and general industrial equipment requiring reliable motor speed regulation.
Key Specifications
Model: 07.F5.B1B-3B0A COMBIVERT F5-BASIC Frequency Inverter
Product Series: KEB COMBIVERT F5 Series
Motor Power: 0.75 kW (for 2/4-pole standard motors)
Rated Power (kVA): 1.8 kVA
Rated Current: 2.6 A
Overload Capacity: 4.7 A for 30 seconds
Input Voltage: 3-phase 305-500 V AC (+10%/-15%) or 420-720 V DC
Output Voltage: 3 × 0 to UNETZ (up to input voltage)
Output Frequency: 0 to 408 Hz
Switching Frequency: 2/4/8/16 kHz (selectable)
Brake Transistor: Built-in
Cooling Type: Air-cooled natural convection / forced air
Enclosure Rating: IP20 (open-type, suitable for control cabinet installation)
Dimensions (W × H × D): 90 × 220 × 160 mm
Control Method: V/f control, sensorless vector control (depending on configuration)
Protection Functions: Overcurrent, overvoltage, undervoltage, overload, short circuit, ground fault
Compact Design for Space-Saving Installation
The 07.F5.B1B-3B0A features a compact form factor with dimensions of 90 × 220 × 160 mm, allowing space-saving installation in control cabinets where panel space is limited. The IP20 enclosure rating requires the drive to be installed inside a control cabinet but provides protection against solid objects larger than 12.5 mm. The air-cooled design uses natural convection for heat dissipation under normal operating conditions, with forced air cooling for higher loads or elevated ambient temperatures. The compact design does not compromise functionality, providing a full set of control, protection, and communication features.
Wide Input Voltage Range for Global Use
The drive accepts a wide input voltage range of 3-phase 305-500 V AC (±10%/-15%), accommodating facility power configurations in various regions including 380V, 400V, 415V, and 480V nominal systems. The additional capability to accept 420-720 V DC input (common DC bus connection) provides flexibility for common DC bus configurations where multiple drives share a DC power source. The wide voltage tolerance allows the drive to operate reliably even with moderate voltage variations common in industrial facilities due to motor starting or utility supply fluctuations.
Built-in Brake Transistor for Dynamic Braking
The built-in brake transistor enables dynamic braking using an external braking resistor, allowing the drive to dissipate regenerative energy generated during rapid deceleration or overhauling loads. When the motor is decelerated, it acts as a generator, returning energy to the DC bus. The brake transistor detects rising DC bus voltage and switches the external braking resistor across the bus to absorb the excess energy. This braking capability is essential for applications requiring fast stopping times, such as positioning systems, centrifuges, and vertical axis control. The built-in brake transistor eliminates the need for external braking module, reducing system cost and panel space.
Adjustable Switching Frequency for Noise and Loss Optimization
The 07.F5.B1B-3B0A offers selectable switching frequencies of 2, 4, 8, or 16 kHz, allowing users to optimize the balance between motor acoustic noise and drive power losses. Higher switching frequencies reduce audible noise from motor windings, producing near-silent operation beneficial for applications in noise-sensitive environments. Lower switching frequencies reduce switching losses in the IGBT power transistors, improving drive efficiency and reducing heat dissipation. The switching frequency can be selected based on application requirements, with appropriate derating for higher frequency settings.
V/f and Sensorless Vector Control Options
The COMBIVERT F5 series supports both V/f control and sensorless vector control modes, allowing selection based on application requirements. V/f control (Voltage/Frequency) is suitable for multi-motor applications, pump/fan loads, and general-purpose variable torque applications. Sensorless vector control provides improved torque performance at low speeds and better speed regulation without requiring an encoder feedback device. The control method can be selected based on the dynamic response requirements, with sensorless vector control providing superior performance for demanding applications such as conveyors, extruders, and positioning systems.
Protection and Reliability Features
The 07.F5.B1B-3B0A includes comprehensive protection functions for enhanced reliability and equipment safety. Overcurrent protection prevents damage from excessive motor current during starting, acceleration, or overload conditions. Overvoltage and undervoltage monitoring protect the drive from abnormal power supply conditions. Motor overload protection uses electronic thermal modeling to prevent motor overheating. Short circuit and ground fault detection safeguard the drive's output stage from wiring faults. The drive's modular software structure includes diagnostic functions that log operational and fault data for troubleshooting analysis.
Industrial Applications
The KEB COMBIVERT 07.F5.B1B-3B0A frequency inverter is deployed across a wide range of industrial motor control applications. In conveyor systems, it provides speed control and smooth starting for material handling applications. In pumping stations, it regulates pump speed to maintain pressure or flow, reducing energy consumption compared to constant-speed operation with throttling valves. In packaging machinery, it provides accurate speed control for wrapping, filling, and sealing equipment. In machine tools, it controls spindle speed for milling, turning, and grinding operations. The drive's 0.75 kW power rating and compact design make it suitable for OEM machinery and retrofit applications.
Environmental and Installation Specifications
The 07.F5.B1B-3B0A is designed for installation in industrial control cabinets with IP20 enclosure protection. The drive should be mounted on a vertical surface with adequate clearance for cooling airflow. The wide ambient temperature range accommodates installation in unheated enclosures with appropriate thermal management. The air-cooled design uses built-in fans to maintain component temperatures within safe limits during continuous operation. The power and control terminals are arranged for convenient wiring access, with clear labeling for proper connection.
Conclusion
The KEB COMBIVERT 07.F5.B1B-3B0A frequency inverter delivers 0.75 kW of motor control with wide input voltage range, built-in brake transistor, adjustable switching frequency, and IP20 enclosure. Its compact design and air-cooled construction make it a practical solution for industrial motor control applications requiring reliable variable frequency drive performance.
