Product Description:

The DKR02.1-F300N-BE33-01-FW is a digital intelligent AC drive controller produced by Bosch Rexroth Indramat within the DKR Drive Controllers series. It converts three-phase mains power into a regulated DC bus and a pulse-width-modulated output for high-power servo or induction motors used in presses, machine tools, and automated material-handling lines. By placing the control loops close to the motor, the unit supports responsive torque, speed, and position regulation during demanding motion tasks. This arrangement also helps reduce communication load on the higher-level control system while keeping drive behavior consistent during rapid changes in load or speed.

It accepts a rated mains input of 3xAC 400–480 V ±10%, while the logic stage uses a separate AC 230 V ±10% control supply. At a switching frequency of 4 kHz, the drive delivers a continuous phase current of 141 A, which corresponds to about 55 kW of shaft power under typical operating conditions. Short-term demand can rise to a peak current of 212 A, allowing the controller to support temporary overloads during acceleration or process disturbances. Because the bleeder option is omitted, regenerated energy cannot be dissipated internally by the DC bus, so external braking hardware is required. Real-time motion commands are transferred through the SERCOS interface, and rotor position can be returned through either digital servo feedback or resolver feedback channels.

The product is part of line series 02, with design version 1 and function module 01 for this controller platform. Thermal management relies on liquid cooling, which removes heat through integrated coolant passages and supports stable operation of the power section under sustained load. Even with that cooling method, the controller releases 1800 W to the cabinet air, so the enclosure must still handle a substantial heat load during operation. The unit has a shipping mass of 104 kg, which affects mounting support and handling requirements without changing the controller's electrical function or control behavior.