Product Description:

Bosch Rexroth Indramat’s DKR02.1-W300N-BE32-01-FW belongs to the DKR Drive Controllers series and functions as a digital intelligent AC drive controller. It supplies regulated current to large synchronous or induction motors and supervises position loops in machining centers, gantry systems, and transfer lines. By integrating power conversion, logic, and communication in one chassis, the unit forms the central actuator interface between a plant’s higher-level CNC or PLC and the electromechanical loads on the factory floor.

The power section is designed for a rated mains supply of 3xAC 400 – 480 V ±10%, while the logic circuits are energized by a separate AC 230 V ±10% control supply. At a switching frequency of 4 kHz, the drive can deliver a continuous phase current of 141 A, translating into roughly 55 kW of shaft-usable power for the connected motor set. Its nameplate current class of 300 places it near the top of the family’s output range. A rigid DC bus is used because the module is shipped without a brake chopper, so surplus braking energy must be handled externally. Heat is removed by a built-in air blower that directs airflow across the heat sink. Motion commands and diagnostics travel over the high-speed SERCOS interface, allowing real-time synchronization with the plant controller.

During dynamic moves, the controller can deliver a peak output of 212 A, giving headroom for acceleration bursts before reverting to its continuous operating range. The internal power electronics release up to 1800 W as heat, so cabinet ventilation must be sized accordingly. Even with the integrated blower, the assembly weighs around 104 kg, so the mounting structure must support substantial mass during installation and operation. The unit is version 1 in line series 02, uses function module version 01, and processes digital servo as well as resolver feedback for coordinated axis control.