DKR 2.1-W200N-BE12-00 Bosch Rexroth Indramat
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MPN: R911262815
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The Bosch Rexroth Indramat DKR 2.1-W200N-BE12-00 is part of the DKR Drive Controllers series and uses air cooling with a built-in blower. This controller features a SERCOS command interface and supports digital servo and resolver feedback. It has a rigid DC bus with no bleeder or brake chopper.
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Product Description:
The DKR 2.1-W200N-BE12-00 is a drive controller manufactured by Bosch Rexroth Indramat for the DKR Drive Controllers series. It serves as the power and regulation stage between the plant’s DC link and a servo motor. The controller converts bus energy into a precisely regulated three-phase output for coordinated motion in industrial automation systems, including gantries, presses, and CNC axes.
This controller delivers a continuous phase current of 200 A for steady-state operation. For short acceleration periods, its listed peak current is 141 A before protective limits intervene. Real-time command data are exchanged over the SERCOS interface, allowing a digital master to manage velocity and position loops without analog command wiring. Internal heat is removed by a built-in air blower; forced airflow through the heat sink helps keep power semiconductors within safe operating temperatures during demanding current cycles. Rotor position is monitored through digital servo and resolver feedback, allowing the controller to process high-resolution encoder signals or resolver signals according to the connected motor. Energy returned during regenerative braking is directed to a rigid DC bus without a brake chopper, so the central supply unit must manage surplus regenerative power. This arrangement places braking-energy control at the common power source rather than within the individual axis controller.
The controller belongs to design release Version 1. Its mechanical dimensions and connector pinouts correspond to the first design layout of this controller series, supporting integration with the appropriate rack components and cabling. The unit uses Function Module Version 00, which provides the base function set without specialized application extensions. Bosch Rexroth classifies it as a Digital Intelligent AC Drive Controller, indicating that digital processing manages motor current, motion commands, feedback signals, diagnostics, and protective functions. Compatible power supplies and auxiliary modules provide the shared DC-link resources required for multi-axis operation.
