Product Description:

The DKR02.1-W300Z-BE04-01-FW is a digital intelligent AC drive controller manufactured by Bosch Rexroth Indramat for the DKR Drive Controllers series. This device regulates large servo axes and induction motors in industrial automation, providing closed-loop current, speed, and position control. It integrates diagnostic functions and parameter memory so operating data remains available during setup and routine operation in multi-axis production cells. It pairs with synchronous and induction servomotors driven by modular power supplies in heavy machining lines, where stable response is needed during rapid load changes.

Its command layer is a SERCOS interface, enabling deterministic setpoint updates across fiber-optic rings. When operated at a 4 kHz switching frequency, the power stage supplies a continuous current of 141 A and sustains mechanical output of approximately 55 kW. Control electronics draw from a single-phase AC 230 V ±10% feed, while the main converter is energized by 3 × AC 400 to 480 V ±10%. Transient torque demands are supported with a peak current ceiling of 212 A. Heat is removed by a built-in air blower that directs airflow through the housing. The code also includes current rating 300, line series 02, design version 1, and function module version 01.

During nominal operation, the controller emits a thermal load of 1800 W. The unit interprets motor position using digital servo and resolver feedback, allowing use with legacy resolver-based motors as well as newer high-resolution encoders. Despite its power density, the unit weighs 104 kg, so appropriate handling equipment is required during installation. The integrated air channel avoids auxiliary cooling ducts and helps keep enclosure layout simpler in high-power cabinets. This arrangement also leaves clear access around the module for cable routing and airflow.