Product Description:

The DKR02.1-W200N-BE11-01-FW is manufactured by Bosch Rexroth Indramat and belongs to the DKR Drive Controllers series. It is a digital intelligent AC drive controller intended to govern large servo axes on machining centers, presses, and handling systems where torque, speed, and position must remain stable under changing load conditions. The type code indicates line series 02, design version 1, and function module version 01, placing the drive in a high-power platform that uses digital feedback for precise motion control.

For mains supply, the unit accepts 3 x AC 400-480 V (±10%) and delivers a continuous output current of 120 A at a 4 kHz switching frequency. Under these conditions, the drive can furnish approximately 47 kW of mechanical power to the connected motor, while short-term overloads are supported by a peak current capability of 141 A. Communication with the motion controller is handled through the SERCOS interface, enabling cycle-synchronous parameter exchange. This optical interface supports synchronized command transfer between the higher-level control and the power stage during multi-axis motion. Digital servo and resolver feedback channels are available for position verification, and the unit uses a common DC bus because the bleeder stage is omitted.

The controller needs a logic supply of AC 230 V (±10%) for its internal electronics and I/O. Thermal energy generated by the power devices, measured at 1600 W, is removed by a built-in blower, which forces air across the internal cooling surfaces. A mass of approximately 104 kg results from the large heat sink and the heavy-duty bus capacitors used for dynamic operation. Because the drive is supplied without a brake chopper, braking energy must be managed through the mechanical load or an external resistor network. This arrangement is often used where regenerated energy can be handled elsewhere in the drive system.