Product Description:

The DKR03.1-W100N-BE24-02-FW is a digital intelligent AC drive controller produced by Bosch Rexroth Indramat in the DKR Drive Controllers series. It belongs to Line 03 and is built in Version 1. The unit receives motion commands over a SERCOS interface and operates from a rigid DC bus without a bleeder or brake chopper. Installed in a control cabinet, it converts three-phase mains power into regulated DC and produces pulse-width-modulated output for servo and spindle axes in metal-cutting machines, packaging stations, and handling cells. This arrangement supports controlled torque and speed response for coordinated industrial motion.

Beneath the front cover, the power section accepts a 3xAC 400–480 V ±10% supply. The logic section and blower are fed by an auxiliary AC 230 V ±10% source. At a switching frequency of 4 kHz, the drive can deliver a continuous current of 71 A, which corresponds to about 26 kW of continuous mechanical power at the motor shaft. Thermal losses total 900 W and are released into the cabinet air, so enclosure ventilation must remove that heat. The internal rating code of 100 is used for protective coordination with upstream fuses and cable sizing, and regenerated energy must be absorbed by the connected DC network or by the mechanical load.

Cooling is provided by a built-in air blower, which removes heat without requiring an external heat sink. The controller processes digital servo and resolver feedback with cycle-synchronous precision to maintain stable motor-loop performance during changing load conditions. The module weighs 49 kg, so the cabinet structure must support that load during installation and operation. Because the cooling air and power losses stay inside the enclosure, a clear internal airflow path is important for reliable temperature control.