Product Description:

The 12.F5.C3B-YG1A is an AC axis drive produced by KEB for the F5 Combivert Axis Drives series. Acting as the power stage between a motion controller and a 400 V three-phase motor, the unit converts fixed input frequency into a variable output that allows closed-loop speed and torque control on packaging lines, conveyors, or machine-tool feed axes. Its internal braking transistor and EMI filter simplify cabinet layout by eliminating separate suppression components while maintaining electromagnetic compatibility.

The drive accepts a three-phase supply of 400 VAC and draws a rated input current of 13 A. Internally, insulated-gate bipolar transistors switch at 4 kHz and feed the motor terminals with an RMS line current of 9.5 A, supporting a continuous apparent power of 6.6 kVA. These values establish the thermal and conductor sizing limits for connected equipment. Inverter size code 12 corresponds to the housing and heat-sink area, while the IP20 rating allows installation inside ventilated cabinets. The built-in braking transistor governs regenerative energy, brake current is capped at 10 A, a 20 A fuse may be used on the supply side, and the unit maintains full output up to 2000 m of installation altitude.

For transient demands such as acceleration, the inverter can source a peak phase current of 17 A. The control algorithm raises the fundamental frequency to 599 Hz, allowing oversynchronous operation of small high-speed spindles while still covering standard 50/60 Hz ranges. Application sizing is limited to 5 HP motor power, and regenerated energy must be dissipated through an external resistor of 82 Ω or higher. Reliable thermal management is maintained as long as the aluminum heat sink remains below 90 °C; if cabinet airflow is limited, the unit will derate to protect the semiconductors.