Product Description:

The DKR03.1-W200N-BE27-01-FW is a digital intelligent AC drive controller produced by Bosch Rexroth Indramat within the DKR Drive Controllers series. The unit governs power conversion and closed-loop torque regulation for large servo axes in automated production lines. By linking the power stage with motion control firmware, it delivers command execution, current control, and fault monitoring, making it suited for high-demand positioning, gantry, and machine-tool applications where fast acceleration and accurate velocity profiles are required.

The drive accepts a three-phase supply of 3 x AC 400 to 480 V ±10% and sustains a continuous output current of 92 A at a 4 kHz switching frequency. Under the same conditions, it can deliver around 35 kW of mechanical power to the connected motor, and transient demands are met with a peak current capability of 141 A. Thermal energy generated by the IGBTs and bus capacitors is removed through internal channels, holding total dissipation to 1200 W. A built-in evaluator processes digital servo and resolver feedback so that velocity loops remain synchronized with the current controller. The hardware is classified with a current rating of 200, establishing the permissible RMS load envelope for continuous service.

The drive uses a rigid DC bus, and the design omits a brake chopper, so the module operates without a bleeder and must be paired with an external regenerative solution if braking energy is substantial. Control logic is supplied from a separate AC 230 V ±10% feed, while the power section is cooled by an integrated built-in air blower that circulates air across the heat sink fins. Parameterization and real-time motion commands are exchanged over the SERCOS interface. The controller weighs 49 kg, is part of Line 03, uses Version 1, and incorporates Function ID 01.