Product Description:

The DKR04.1-W400N-BE06-01-FW is a digital intelligent AC drive controller produced by Bosch Rexroth Indramat within the DKR Drive Controllers series. As a cabinet-mounted unit, it coordinates power conversion and motion control for large servo axes in automated machinery, using its rigid DC bus to recycle energy internally when loads decelerate. The product is part of Line Series 04, has Design Version 1, and uses Function Module Version 01 for systems that rely on high-capacity regulation without an internal brake chopper.

For closed-loop operation, the controller accepts commands over the SERCOS interface and monitors digital servo and resolver feedback to synchronize torque and position. A continuous armature supply of 210 A at a 4 kHz switching frequency permits motors to run steadily up to a mechanical output of 93 kW, while current rating 400 indicates the permissible thermal load category for its power stage. Logic circuits are supported by an AC 230 V (±10%) control supply, and the power electronics are kept within temperature limits by built-in air blower cooling, so no external liquid loop is required. The bleeder configuration is omitted, so excess regenerative energy must be managed through external braking resistors or returned to the facility grid.

Incoming mains feeds of 3 x AC 400–480 V (±10%) charge the internal bus and enable a peak drive output of 282 A for brief acceleration or stall events that exceed the continuous envelope. During heavy cycles, the module expels up to 2500 W of heat, which must be removed through cabinet airflow and spacing. Despite its 600 mm height, the unit has a mass of 150 kg, reflecting the large inductors and IGBT stacks needed for its rating. The controller is intended for multi-axis systems that use a rigid bus and an external braking arrangement.