Product Description:

The DKR03.1-W100N-BE93-01-FW is a drive controller produced by Bosch Rexroth Indramat for the DKR Drive Controllers series. It converts three-phase line power into regulated outputs that control high-performance servo or spindle motors in production cells, machining centers, and automated handling stations. The device combines power electronics, microprocessor-based regulation, and fieldbus communication in a single enclosure, allowing centralized motion control for multi-axis machines. Its current rating code 100 places the unit near the upper end of the series, making it suitable for equipment that requires sustained high torque and rapid acceleration.

Motion and diagnostic data pass through its SERCOS interface for fiber-optic links to the host controller. At a switching frequency of 4 kHz, the power bridge supplies 71 A continuously and can provide 26 kW of mechanical power with matched motors. The electronics receive an AC 230 V control supply with a tolerance of ±10%, while the main section operates from 3×AC 400–480 V factory mains. An internal air channel and a built-in blower remove heat and keep the components within their permitted operating range. The unit is version 1 with function module version 01.

Within line series 03, the controller uses digital servo and resolver feedback to close its current and speed loops, supporting accurate position control without external transducers. The DC link is provided without a brake chopper, so regenerated energy must be dissipated externally or returned to the supply. During short acceleration bursts, the unit can rise above its continuous current level without exceeding thermal limits. Waste energy appears as only 900 W of heat under nominal conditions, and the assembled unit weighs 49 kg. These values are useful for enclosure cooling calculations and for selecting adequate mechanical support.