Product Description:

The 07.F4.C1D-3420 frequency inverter is produced by KEB within the F4 Combivert Frequency Inverters series. As a pulse-width-modulated controller, it translates fixed-frequency mains power into a variable AC output, giving machine builders a straightforward method for adjusting motor speed and improving process accuracy. The device is intended for cabinet mounting and links directly to drives in automated conveyors, small pumps, and packaging equipment, where fine motor regulation, controlled ramp profiles, and integrated braking energy handling are needed for repeatable cycles. Using microprocessor control, the inverter supervises current, voltage, and temperature while exchanging status information with higher-level PLCs through standard I/O.

Electrically, the unit operates in the 400 V-Class and accepts a three-phase supply. With a nominal input current of 2.8 A, it feeds an output stage rated for 1.8 kVA of apparent power and capable of delivering 2.6 A of continuous motor current. Internal dissipation remains at 45 W, so cabinet airflow is normally sufficient. The integrated brake transistor routes regenerated energy to an external resistor, and the D-style housing provides top-entry terminals sized for a line cross section of 1.5 mm². Upstream protection uses a 10 A mains fuse, and an overcurrent trip level of 5.7 A protects the power stage. For regular modulation tasks, the inverter uses a carrier frequency of 4 kHz.

The performance envelope covers intermittent demands beyond the continuous ratings. Motor shafts up to 0.8 kW can be driven, and short load surges are supported by a peak current of 4.6 A for limited periods. Rated and maximum switching operation use the same frequency, so thermal stress remains predictable across operating modes. Heat extracted through the rear fins must keep the heat sink surface below 85 °C; the inverter reduces output if this temperature is approached to protect the IGBT module and attached motor.