DKR02.1-W300Z-B Bosch Rexroth Indramat
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MPN: R911292719
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The Bosch Rexroth Indramat DKR02.1-W300Z-B is a digital intelligent AC drive controller and is part of the DKR Drive Controllers series. It provides a continuous current of 141 Amps at 4 kHz and supports a peak current of 212 Amps. The controller uses air cooling with a built-in blower and has a weight of approximately 104 kilograms.
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Product Description:
The DKR02.1-W300Z-B is an intelligent AC drive controller built by Bosch Rexroth Indramat and assigned to the DKR Drive Controllers series. Designed to operate high-power servo and spindle motors, the unit converts three-phase mains power into regulated outputs and handles real-time motor feedback for closed-loop positioning in production machinery and machining centers. In industrial automation, it sits between the power supply and the motor, issuing torque and speed commands while supervising protective functions and networked diagnostic data. Its control role makes it suitable for machine sections that require stable speed regulation, repeatable positioning, and coordinated motor response during changing load conditions.
At a switching frequency of 4 kHz, the controller sustains a continuous output current of 141 A, which is the maximum root-mean-square phase current it can deliver continuously without thermal derating. In the same operating mode, it provides roughly 55 kW of drive power, enabling large axes or spindle packages to maintain full-load speed. For short transients such as acceleration peaks, the unit tolerates a drive current of 212 A. Incoming mains for the power stage must lie within 3×AC 400 … 480 V ± 10 %, while the logic section is isolated and operates from a control supply of AC 230 V ± 10 %. The separate control supply supports the command and monitoring circuits independently of the main power path during normal operation.
Thermal management relies on a built-in air blower that forces ventilation through the heat sink and removes up to 1800 W of loss power under nominal loading. The assembly weighs around 104 kg, so the mounting surface must support a substantial installed load. Position and velocity loops are closed with digital servo and resolver feedback, allowing the controller to pair with both high-resolution encoders and traditional resolvers on compatible Indramat motors. This feedback flexibility supports use with different servo and spindle motor configurations in the same control platform.
