Product Description:

The 16.F4.F1G-3440 is a frequency inverter produced by KEB and assigned to the F4 Combivert Frequency Inverters series. It converts fixed mains power into a variable-voltage, variable-frequency output for controlled motor operation. In this role, it lets machine builders match motor speed to process demand instead of running directly from fixed line frequency. This allows three-phase induction or synchronous motors to start smoothly, accelerate under control, and maintain stable speed and torque in automated machinery and material-handling lines.

It operates on a 400 V-class supply and accepts a three-phase input. Under rated conditions, the rectifier draws 36.5 A, while the inverter section delivers 33 A to the motor. The resulting apparent power of 23 kVA supports the vector-controlled output stage used for stable speed and torque control. A carrier frequency of 8 kHz reduces current ripple, and the device can deliver 21.5 A of stall current at that switching rate for short-term torque demand. The integrated braking transistor handles regenerative energy, and line conductors up to 10 mm² connect through the G housing terminals. Field-oriented control tracks rotor flux for accurate torque response, which helps maintain stable operation during load changes and low-speed running. The three-phase mains connection and housing design G also support cabinet installation without an additional heat sink plate.

The inverter supports 15 kW of motor shaft power, and internal losses are limited to 310 W, which matters when panel heat dissipation is being calculated. For dynamic applications, the modulation system can raise carrier frequency to 16 kHz when reduced output current is acceptable, which can lower audible motor noise. Protection on the supply side relies on a 50 A gG mains fuse that disconnects the drive during short circuits or severe overloads. This arrangement also helps protect upstream wiring and the drive input stage during fault conditions.