Product Description:

The DKR02.1-W300N-BE02-00 is a digital intelligent AC drive controller from Bosch Rexroth Indramat in the DKR Drive Controllers series. It governs large synchronous or induction motors in machining centers, presses, and other motion-focused equipment. By converting fixed mains power into a precisely modulated three-phase output, the controller supports closed-loop speed and torque regulation for high-power automation systems that require rapid command exchange and accurate positioning.

In Line 02 and Version 1, the drive uses current rating class 300 for conductor sizing and protective hardware. When operated on a 4 kHz PWM carrier, it can furnish a continuous phase current of 141 A, which corresponds to approximately 55 kW of mechanical output at a matched motor voltage. The control electronics draw from a single-phase supply of AC 230 V, ± 10%, while the power section connects to a three-phase mains supply of 3× AC 400 to 480 V, ± 10%. A built-in air blower provides forced convection to keep internal IGBT temperatures within limits during sustained duty, and motion commands, parameter sets, and diagnostics are exchanged through the SERCOS interface for synchronized axis control with other networked drives.

For short acceleration bursts, the controller supports a peak output of 212 A, and the associated switching and conduction losses raise total cabinet heat rejection to 1800 W. Because no brake chopper is installed, the DC bus requires regenerated energy to be dissipated externally or by mechanical means. Feedback channels accept both digital servo encoder signals and resolver signals, which allows mixed-sensor installations without additional option cards. The functional core uses module 02 with Version 00, and its status data travel across the same fiber-optic loop as the motion commands. Despite its high power density, the housing weighs only approximately 104 kg, which allows handling with standard lifting equipment.