When to choose the classic inverter
Ideal for standard applications with asynchronous motors: COMBIVERT G6
Some consider it an “underdog” in the KEB portfolio, while others regard it as a long-established standard in drive technology: the COMBIVERT G6 frequency inverter from KEB. Alongside the COMBIVERT F6 and S6 drives, it is one of the components that reliably control machines and plants. It has its own unique characteristics that make it a sought-after option in numerous applications and distinguish it from other drive controllers.
When it comes to controlling different motor technologies, many users opt for the COMBIVERT F6 drive controllers or the S6 servo drives, which can drive any motor. The COMBIVERT G6 is also suitable for controlling asynchronous three-phase motors or synchronous servo motors. The G6 is a classic frequency inverter with a power range from 0.75 kW to 30 kW, which enables both controlled U/f operation and regulated operation without encoder feedback. “The basic version of the G6 in U/f operation with the proven SMM (Sensorless Motor Management) method is ideal for standard applications with asynchronous motors – at output frequencies up to 599 Hz, optionally up to 800 Hz,” says Timo Geisler, Product Manager Drives at KEB. Variants with sensorless control are available for applications that require high torque and speed stability.
Good to know: Sensorless control
The sensorless KEB control methods ASCL (Asynchronous Sensorless Closed Loop) and SCL (Sensorless Closed Loop) enable maximum dynamics, regardless of whether asynchronous or synchronous motors are used.
A two-stage parameter model with a clear basic menu and an integrated LCD plain text display ensure particularly easy handling. Its compact design means that all the requirements for space-saving installation in the control cabinet are met. "In conveyor and warehouse technology, the robustness of the drive components is crucial – and the G6 meets these requirements. In packaging technology, the inverter impresses with its fast setpoint processing and controlled positioning to compensate for dead times," says Geisler. With output frequencies of up to 800 Hz, the G6 is also suitable for use in compressors, and in food production, the inverter's high starting torque is a real strength.
EMC included
Electromagnetic compatibility (EMC) is an aspect of smooth machine operation that should not be underestimated. Electromagnetic interference can cause machines to fail, costing time and money. With this in mind, all sizes of the COMBIVERT G6 frequency inverter are equipped with an integrated EMC filter ready for installation in the control cabinet. The special feature of the filter is its minimal leakage currents to earth and motor cable lengths of up to 100 m. The internal filter has new core materials and is designed in accordance with EN 61800-3 for environments C1 and C2. This means that nothing stands in the way of stable operation in industrial environments.
Get to know the COMBIVERT G6 even better:
