Product Description:

The 10.F4.C1D-3480 is a frequency inverter produced by KEB as part of the F4 Combivert Frequency Inverters series. Designed for 400 V industrial mains, the drive modulates voltage and frequency so three-phase induction motors can run at the speed the process requires instead of the fixed speed set by line frequency. By varying motor output in this way, it supports smoother acceleration, controlled deceleration, and speed adjustment during normal operation. This makes the unit suitable for automated conveyors, mixers, and fan systems that need adjustable torque and efficient motor control.

The inverter accepts a three-phase AC supply within the 400 V class and draws a nominal 6.4 A of line current, so feeders with a cross-section of 2.5 mm² meet its wiring requirement. Internally, insulated-gate bipolar transistors switch the DC link up to 16 kHz, producing an output waveform that delivers 5.8 A of continuous motor current and 4 kVA of apparent power to the load. The control stage is protected by an overcurrent trip that activates at 12.7 A, while momentary overload capability reaches 10.4 A for short acceleration bursts. At rated load, the heat sink dissipates 80 W, and safe operation is maintained provided the aluminum base does not exceed 85 °C. These electrical limits require proper mounting and cooling inside a control cabinet so heat can be removed during continuous duty.

A braking transistor is already installed, allowing excess regenerative energy to be routed through an external 270 Ω resistor when the motor slows down. During deceleration, the transistor can conduct up to 15 A, and upstream protection should be coordinated with a 20 A fusible link to prevent conductor damage. The drive is matched to motors up to 2.2 kW, and its internal logic commands the brake circuit when DC-bus voltage rises. This arrangement is useful in applications with frequent stopping cycles or loads that return energy to the drive during braking.