Product Description:

The DKR03.1-W100N-BE11-01-FW is an AC drive controller from Bosch Rexroth Indramat that belongs to the DKR Drive Controllers series. Within an automation cell, it supplies and regulates power for synchronous or induction motors while coordinating motion axes through digital bus commands. The unit is part of line series 03, uses design version 1, and has function module version 01. Its rigid DC bus uses a no-bleeder configuration, so regenerative energy must be handled by external devices or absorbed by the driven mechanics.

Network communication is handled through the SERCOS interface, which provides deterministic command and feedback cycles. At a switching frequency of 4 kHz, the controller can supply a continuous phase current of 71 A, which corresponds to about 26 kW when paired with appropriately sized motors. The control electronics are fed by a separate AC 230 V supply that tolerates ±10% variation, while the power stage accepts a mains window of 3 x AC 400 to 480 V with the same tolerance. Thermal management relies on a built-in air blower, and the integral fan moves cabinet air across the heat sink so full output can be maintained without external ducting. Motor feedback channels support both digital servo encoders and resolver signals, allowing compatibility with different feedback types. The current rating code 100 places the unit in the 100 A class, and its peak current matches the continuous rating.

Total conversion losses appear as 900 W of heat, so enclosure airflow should account for that thermal load. Despite its power capacity, the drive has a mass of 49 kg, which helps keep cabinet loading predictable during installation. Classified as a Digital Intelligent AC Drive Controller, the unit combines power electronics, a fieldbus interface, and diagnostic functions in one housing for high-performance motion control.