Product Description:

The 07.F5.B3A-390A is an inverter drive produced by KEB for the F5 Combivert Axis Drives series. It supplies variable voltage and frequency to three-phase induction motors used in automated conveyors, pumps, and positioning tables. Its built-in braking transistor and EMI filter dissipate regenerative energy and reduce conducted noise, so additional external hardware is unnecessary for most cabinet installations.

Operating from a three-phase 400 V AC/DC supply, the drive delivers a mechanical output rated at 0.75 kW. Continuous motor excitation is supported by a phase current of 2.6 A, while short accelerations can draw up to 5.6 A before thermal limits are approached. The internal IGBT bridge chops the DC link at a carrier of 4 kHz, producing a sinusoidal output that minimizes motor heating and audible noise. Logic and fieldbus data are refreshed every 2 ms, a scan interval that aligns with high-speed PLC cycles. One analog input with 11-bit resolution accepts speed or torque references, and five digital inputs handle run commands, direction, and fault resets. The unit meets EMC class C1, allowing installation on low-voltage distribution networks without additional suppression components. Because no encoder interface is present, sensorless vector control is the standard operating mode.

An IP20 housing permits mounting inside a protective cabinet where finger-safe access is sufficient and liquid ingress is not expected. For brief overloads, the current may rise to 180% of nominal, and an overcurrent trip activates at 216% to protect the semiconductor bridge. Braking energy is routed to the integrated transistor rather than the DC bus, keeping bus voltage within safe margins. The absence of external encoders simplifies wiring, while the single analog and five digital inputs simplify setup for small- to medium-sized axis applications.