Product Description:

The DKR02.1-W200N-BT72-02-FW is a digital intelligent AC drive controller manufactured by Bosch Rexroth Indramat for the DKR Drive Controllers series. Belonging to line series 02 and supplied in design version 1, the unit accepts three-phase mains power, builds a rigid DC bus, and commands servo axes through internal current, velocity, and position loops. Its purpose in industrial automation is to synchronize high-inertia loads and rapid-cycle tooling while exchanging real-time status with higher-level PLCs.

This controller is powered from a mains window of 3xAC 400–480 V ±10%, while its control electronics are fed by a separate AC 230 V ±10% supply. Motion commands arrive through the SERCOS interface, and feedback from the motor can be either digital servo or resolver based, allowing tight loop closure without additional converters. With a pulse-width-modulated carrier of 4 kHz, the power stage can deliver a continuous output current of 120 A, translating to approximately 47 kW of sustained mechanical power at the motor shaft. The DC link is configured without a bleeder or brake chopper, so braking energy must be absorbed by the connected mechanics or returned to the mains. A nominal current rating of 200 A gives the unit ample headroom for dynamic loads.

Short-term acceleration and deceleration demands are handled by a peak current capability of 141 A. Thermal stability is maintained by an internal airflow path that uses a built-in air blower to sweep hot components, limiting controller heat losses to 1600 W. Because the enclosure weighs 104 kg, cabinet mounting must account for significant static load as well as clearance for the blower inlet and outlet. The rigid DC bus, the lack of a brake chopper, and the total heat output require appropriate wiring, fusing, and ambient ventilation around the drive.