Product Description:

The 12.F5.CBD-Y50A drive is an AC inverter assembled by KEB and positioned within the F5 Combivert Axis Drives series. It delivers single-axis motor control in a compact format, converting constant grid power into a regulated output for automated machinery. A built-in braking transistor routes regenerated energy to an external resistor, while a standard heat sink base disperses switching losses. The housing follows size code 12 in a D-type enclosure, and the platform omits an encoder interface, making it suitable for open-loop or sensorless vector applications in conveyors, pumps, and general motion tasks. This layout is useful where stable speed control is needed without separate position feedback wiring.

This model operates from a three-phase supply of 400 V. At rated load it supplies 9.5 A, which corresponds to 6.6 kVA at the motor terminals. That output supports machines demanding up to 5 HP of mechanical power. The internal IGBT bridge commutates at a nominal 4 kHz, balancing acoustic noise with efficiency, and it can be increased to 16 kHz when smoother torque is required. Heat produced by these switching events is drawn through the aluminum heat sink and upward into surrounding airflow established by the user’s panel layout. A minimum braking resistor of 82 Ω must be fitted, and the transistor can pulse up to 10 A during regenerative deceleration to absorb returned energy during rapid slowing.

For transient demands, the inverter can deliver a short-time current boost of 150 %, and its fast electronic protection trips if the line current reaches an overcurrent threshold of 180 %. Reliable operation is maintained provided the heat sink temperature stays below 90 °C. If that temperature is exceeded, the drive derates or shuts down to protect the semiconductor junctions from thermal stress. The compact control board supervises these limits and coordinates the response of the cooling hardware, housing, and power stage during changing load conditions.