Product Description:

The DKR02.1-W200N-BE34-02-FW is a digital intelligent AC drive controller manufactured by Bosch Rexroth Indramat and assigned to the DKR Drive Controllers series. This unit coordinates power conversion and closed-loop motion commands between the main supply and an Indramat servo motor. In industrial automation systems, it delivers controlled current, monitors feedback, and exchanges process data so that axes can accelerate, brake, and hold position with repeatable accuracy. It is intended for servo applications that require coordinated current, speed, and position control.

At a pulse-width modulation frequency of 4 kHz, the drive can supply a continuous output current of 120 A, allowing large motors to run steadily under rated load. The corresponding continuous electrical power reaches 47 kW, which should be considered when sizing the supply and heat removal. For short transients such as rapid indexing, the inverter can deliver a peak current of 141 A before protective limits intervene. The mains connection is specified for 3 x AC 400–480 V with a ±10% tolerance and a rigid DC bus, so external braking choppers are unnecessary. During nominal operation, the power electronics release 1600 W of heat that must be removed by the integral fan. The unit is in line series 02 and design version 1, while its internal current rating of 200 A affects conductor cross-sections and related hardware. Dual-channel digital servo and resolver feedback inputs maintain precise phase alignment during every cycle.

Control electronics are powered from a separate AC 230 V supply with ±10% variation, which allows the logic and blower to remain active even when the main line is isolated. Separate control power also allows status functions to remain active when the main line is disconnected. Real-time motion commands are exchanged over the SERCOS interface, enabling deterministic communication with PLCs and neighboring drives. Thermal management relies on a built-in air-cooled blower; this arrangement removes device heat without external cooling modules. The complete assembly weighs 104 kg, so the cabinet structure must support its mass and account for vibration generated by the fan.