Product Description:

The DKR02.1-W300N-BA37-01-FW drive controller is manufactured by Bosch Rexroth Indramat as part of the DKR Drive Controllers series. Designed as a digital intelligent AC drive controller, it links high-capacity mains supplies to servo axes in large automation cells. In operation, it interprets analog reference signals, generates variable three-phase output, and closes the control loop with integrated motor feedback, allowing coordinated motion in milling machines, gantries, and transfer lines. The controller is intended for central cabinet mounting beside other modular inverters.

Rated power enters the inverter through a three-phase supply of 3× AC 400–480 V ±10%, while auxiliary electronics are stabilized by a control input of AC 230 V ±10%. With a carrier frequency fixed at 4 kHz, the power stage can deliver a continuous armature current of 141 A and a momentary peak of 212 A, enabling rapid torque transients on heavy servomotors. When thermally steady, the converter sustains roughly 55 kW of mechanical output. These ratings correspond to the unit's 300 current class and to the Line 02 platform with Design 1 and Function Module version 01. A built-in blower forces air through the heat-sink channels, and the DC bus does not include a brake chopper, so regenerated energy must be handled externally.

To complete the control loop, the drive accepts setpoints through an analog interface and processes position data through digital servo and resolver feedback, allowing motion controllers to perform precise vector control without additional converters. During sustained operation, the IGBT stage releases up to 1,800 W of heat, which must be considered when sizing cabinet airflow paths. With a shipping mass of approximately 104 kg, the unit requires reinforced mounting rails and adequate service space for the blower outlet. The enclosure contains the power electronics, control logic, and feedback processing circuits in one housing.