Product Description:

The DKR02.1-W200N-BE24-02-FW is a drive controller produced by Bosch Rexroth Indramat within the DKR Drive Controllers series. Classified as a Digital Intelligent AC Drive Controller, the unit governs large synchronous and induction motors in automated lines, providing closed-loop speed and torque regulation through its internal power section and control electronics. It integrates into multi-axis systems where fast current processing and coordinated movement are required, acting as the interface between the plant PLC and high-inertia mechanical loads.

At a switching frequency of 4 kHz, the drive can supply a continuous output of 120 A, which yields about 47 kW of shaft power with suitable motors. The control stage draws auxiliaries from a stabilized AC 230 V feed, while the power stage relies on a rigid DC bus because the design does not include a bleeder or brake chopper. Cooling is provided by air cooling with a built-in blower, which forces airflow through the heat sink. Short load peaks are handled by a limit of 141 A. The module is part of Line 02, carries current rating code 200, is design version 1, and processes position data through digital servo or resolver feedback.

During nominal duty, the controller releases 1600 W of heat that must be removed from the enclosure. The incoming three-phase mains may range from 3×AC 400–480 V with a ±10% tolerance, allowing operation on common factory distribution networks. Despite its compact footprint, the assembly weighs about 104 kg, so cabinet mounting must support a substantial static load. Communication with higher-level motion controllers occurs through the SERCOS interface, enabling deterministic cycle times and synchronized axis control. The combination of high heat dissipation and substantial mass makes rigid mounting and adequate cabinet airflow important for stable operation.