Product Description:

The DKR03.1-W200N-BE39-02-FW is a digital intelligent AC drive controller manufactured by Bosch Rexroth Indramat for the DKR Drive Controllers series. It converts three-phase mains energy into controlled motor currents, executes closed-loop velocity and torque commands, and exchanges motion data with plant PLCs. The unit sits between the power network and the mechanical axis, supporting rapid tool changes, synchronized conveyor sections, and other precision tasks in automated systems. In typical operation, it regulates drive power so the connected motor can respond quickly to commanded changes in speed and load.

The controller is rated for 3xAC 400–480 V AC supplies and sustains a continuous output current of 92 A at a 4 kHz switching frequency, providing roughly 35 kW of mechanical power without derating. Motion profiles are transmitted through the SERCOS interface, while digital servo and resolver channels return position feedback to the current and velocity loops. Design version 1 and Line 03 indicate the product revision and layout used for this drive type. Because no brake chopper or bleeder resistor is installed, the DC link depends on the external system design, and the nominal current class of 200 A is used when selecting conductors and protective devices.

Auxiliary electronics draw from a single-phase 230 V AC control feed that may vary by ±10% without affecting regulation. During acceleration, the power stage can deliver a peak phase current of 141 A, supplying short-term torque multiplication for heavy or inertial loads. Thermal energy is removed by integrated air cooling with a built-in blower, and cabinet ventilation must accommodate a heat output of 1200 W. The built-in blower removes heat from the power section, so the enclosure should provide clear airflow paths around the controller. The unit weighs 49 kg, which should be taken into account during rack mounting and panel layout.