DKR 2.1-W300N-BE02-00 Bosch Rexroth Indramat
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MPN: R911262100
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The Bosch Rexroth Indramat DKR 2.1-W300N-BE02-00 is part of the DKR Drive Controllers series and features a nominal current of approximately 300 Amps. It uses a SERCOS command interface and provides support for digital servo and resolver motor feedback. The controller is air-cooled with a built-in blower and does not include a bleeder or brake chopper, utilizing a rigid DC bus.
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Product Description:
The DKR 2.1-W300N-BE02-00 belongs to the DKR Drive Controllers series from Bosch Rexroth Indramat. As a digitally regulated unit, it acts as the central power stage between a plant-level motion controller and high-power servo or spindle motors. It converts three-phase mains power into a controlled DC link and modulated output phases that execute position, speed, and torque commands in industrial automation. The model communicates with higher-level controls through a SERCOS interface, allowing deterministic command exchange and synchronized coordination among multiple axes.
Thermal management relies on a built-in air blower, so the cabinet must provide a clear path for cooling airflow. The power stage belongs to the 300 A current class and supports motors used in demanding servo and spindle applications. Energy produced during regenerative braking returns to the rigid DC link because the controller has no bleeder. An external braking resistor or a shared DC bus arrangement is required when the connected drive group cannot absorb the excess energy. Position and velocity loops use digital servo and resolver feedback, enabling operation with compatible high-resolution encoders and resolver transducers. These feedback methods allow the controller to monitor shaft movement and adjust motor current in response to commanded motion.
The instantaneous overload current reaches a peak of 212 A, providing short bursts of torque during acceleration or rapid indexing without immediately activating current protection. The controller has design version 1, which corresponds to the mounting dimensions and connector arrangement used by compatible 2.x frames from the same design generation. Application functions are provided by function module 02. The accompanying module version is 00, indicating the initial release level for this option card without referring to alternate versions. The controller is classified as a Digital Intelligent AC Drive Controller and uses high-bandwidth current regulation with programmable monitoring for production machinery. Its digital regulation supports controlled motor response when operating conditions or load demands change during a motion cycle.
