Product Description:

The 12.F4.C1E-3480 is an AC frequency inverter manufactured by KEB for the F4 Combivert Frequency Inverters series. Classified as a COMBIVERT F4 device, it converts fixed-frequency three-phase supply power into a regulated output that permits closed-loop speed and torque control of industrial motors in automated machinery. It serves installations that benefit from a compact drive footprint and integrated energy-dissipation hardware.

Within the E-size housing, the inverter uses a compact control mode that reduces panel depth while retaining full parameter access. It is wired to a three-phase supply through conductors up to 2.5 mm² and accommodates a mains voltage from 305 to 500 V, matching its 400 V class design. Under continuous duty, the drive can deliver 9.5 A at 400 V of output current, providing 6.6 kVA of apparent power at the terminals and supporting motors with a rated output of up to 4 kW. Upstream protection is provided by a maximum mains fuse rated at 20 A, while the electronic overcurrent trip activates at 20.9 A to protect the system during stalled-shaft faults. A built-in braking transistor controls the handling of regenerated energy during motor deceleration. The standard fieldbus option supports communication through baseline PLC interfaces.

The output stage operates at a carrier frequency of 16 kHz, improving motor acoustics and reducing torque ripple during low-speed operation. For short acceleration periods, the inverter supplies 17.1 A, providing a 180% overload margin relative to its continuous current rating. Incoming line demand remains within 10.5 A at nominal load, aiding cable sizing and breaker coordination. The enclosure has an IP20 rating and is intended for installation inside a suitable switchboard or control cabinet. The unit operates at ambient temperatures from -10 to 45 °C and tolerates up to 95% relative humidity without condensation, reducing the need for additional climate-control equipment in typical factory environments.