Product Description:

The DKR02.1-W200N-BE43-02-FW is a digital intelligent AC drive controller produced by Bosch Rexroth Indramat for the DKR Drive Controllers series. As part of line series 02 and design version 1, it serves as the power and control stage between the factory mains and high-power servo or spindle motors. In industrial automation cells, it modulates three-phase power, executes closed-loop motor commands, and coordinates motion sequences for machining centers, material-handling gantries, and similar equipment. This type of controller suits applications that need coordinated motor response during continuously operating production cycles.

Under continuous operation at a 4 kHz switching frequency, the unit supplies 120 A of drive current, translating to about 47 kW of usable shaft power. The power stage is fed by 3 x AC 400 to 480 V, ±10%, while its control electronics require AC 230 V, ±10%. Thermal energy generated by the IGBT stack is removed by a built-in air blower, allowing cabinet installation without external ductwork. A rigid DC bus is used because the bleeder configuration omits a brake chopper, and the power section is sized for current rating 200. Motor position data are processed through digital servo and resolver feedback, which helps the controller track commanded motion across changing load conditions. Application-specific behavior is selected through function module 43.

For short acceleration bursts, the controller permits a peak phase current of 141 A, enabling dynamic response when cutting tools or indexing tables change speed. All real-time motion commands and diagnostics travel over the SERCOS interface, reducing wiring and synchronizing multiple axes on the same fiber ring. Internal losses appear as approximately 1600 W of heat, so cabinet airflow must carry that thermal load away from the drive compartment. The drive enclosure weighs 104 kg, giving the unit a substantial panel-mounted form that supports stable installation during extended duty cycles.