Product Description:

The DKR02.1-W300N-BE43-02-FW is an AC drive controller produced by Bosch Rexroth Indramat within the DKR Drive Controllers series. As a digital drive controller, it regulates high-power servo or induction motors in automated machining centers, presses, and handling systems. It converts incoming line power and processes feedback signals to maintain commanded motion profiles under changing load conditions. The unit is built as line series 02, design version 1, with function module 43. Its control architecture is intended for installations where closed-loop coordination and sustained output current are both required.

It accepts a three-phase supply of 3xAC 400–480 V ±10 %, while the control electronics use a separate AC 230 V ±10 % feed. This separate supply lets the control section remain independent of the main motor power path during normal operating states and internal monitoring. With an internal bus clock of 4 kHz, the power section can deliver a continuous output of 141 A and support motors rated up to 55 kW, while short-term transients are covered by a peak capability of 212 A. A built-in blower provides forced-air cooling and removes 1800 W of thermal losses generated at full load. Because the DC link is rigid and the unit does not include a brake chopper, external regeneration hardware is required when braking energy cannot be absorbed by the installation. The nominal current value in the model code indicates a 300 A class frame.

Real-time motion data enter through the SERCOS interface, which supports synchronized command exchange in coordinated motion systems. Position loops are closed with combined digital servo and resolver feedback, allowing the controller to optimize torque accuracy and stable motor control across a broad speed range. The communication link and feedback channels support synchronized motion in systems with multiple controlled axes. The housing and integrated blower bring total weight to 104 kg, so the mounting structure must support substantial static load and leave enough space for cable routing, airflow, and service access.