DKR 2.1-W300N-BE37-00 Bosch Rexroth Indramat
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MPN: R911263715
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The Bosch Rexroth Indramat DKR 2.1-W300N-BE37-00 is a drive controller in the DKR Drive Controllers series with a nominal current of approximately 300 Amps. It uses a SERCOS command interface, features digital servo and resolver feedback for motor feedback, and is cooled by a built-in blower.
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Product Description:
The DKR 2.1-W300N-BE37-00 drive controller is manufactured by Bosch Rexroth Indramat and belongs to the DKR Drive Controllers series. Designed for multi-axis machining centers and production lines, the unit converts three-phase mains power into regulated power for AC servo and spindle motors, supporting coordinated motion and speed control in automated equipment. It integrates control, power, and diagnostic sections in a single cabinet-mounted housing. This arrangement allows the drive to execute motion tasks without separate external amplifiers or analog converters. The controller can manage demanding spindle and servo applications that require precise regulation during changes in speed or mechanical load.
Its power stage is in the 300 A current class, supporting sustained high-torque operating cycles. During rapid acceleration, the unit can deliver a peak current of 212 A, enabling brief bursts of additional torque. The DC link operates without a brake chopper, so it does not dissipate regenerated energy internally; surplus energy must be handled by the connected system or an external resistor. Internal cooling is provided by a built-in blower, which moves air across heat-generating components and reduces reliance on cabinet airflow. Motion commands are exchanged through a SERCOS interface, providing deterministic fiber-optic communication with higher-level motion controllers. This communication method supports synchronized commands and status exchange across coordinated machine axes.
Rotor position data are processed through digital servo and resolver feedback, allowing the drive to work with resolver transducers and compatible digital encoder channels. The controller has design version 1, and its application section uses function module 00 for the standard configuration without special option boards. The unit is classified as a Digital Intelligent AC Drive Controller. Diagnostic routines, parameter storage, and drive-internal PLC functions reside on the same processor that executes the current-control loops. Embedded diagnostics provide operating information that can help identify faults and monitor drive status within an automated system. The rapid current response supports high-inertia spindles and fast-cycling servo axes used in machining centers, transfer lines, and other production equipment.
