Product Description:

The DKR02.1-W200N-BA07-01-FW is a drive controller manufactured by Bosch Rexroth Indramat for the DKR Drive Controllers series. Classified as a digital intelligent AC drive controller, it regulates high-power AC servo or spindle motors used in machining centers, material-handling cells, and automated assembly lines. Internal control loops generate commanded torque and speed so the unit can serve as the central power stage within larger motion systems. It is intended for applications that require stable motor control during both continuous operation and short-term load changes.

The controller accepts a three-phase input range of 3xAC 400-480 V ±10%, while logic and gate-drive circuits use a separate AC 230 V ±10% supply. Separating the control supply from the main power input allows the electronics to remain energized for orderly monitoring and controlled shutdown behavior when the power stage is disabled. At a switching frequency of 4 kHz, it provides 120 A of continuous output, which corresponds to about 47 kW of sustained mechanical power. The W200N code indicates the nominal current class, while the continuous rating remains limited by the thermal design. Heat from the IGBT bridge is removed by air with a built-in blower, so no external liquid cooling circuit is required. Commands are handled through an analog interface, and the DC bus does not include an internal brake chopper, so regenerated energy must be managed by external braking hardware or by the connected power system.

For short acceleration intervals, the drive permits a peak output of 141 A before current limiting intervenes. Total heat dissipation is 1600 W, which is useful when sizing cabinet ventilation and airflow. Motion control uses digital servo and resolver feedback, allowing either feedback type to support position and velocity control. This feedback flexibility supports machines that use either encoder-based servo motors or resolver-equipped spindle motors. The enclosure weighs about 104 kg, so the mounting structure must support a substantial installed load. The unit is Line 02, Version 1, and Function Module Version 01.