Product Description:

The DKR03.1-W100N-BE11-02-FW is a digital intelligent AC drive controller manufactured by Bosch Rexroth Indramat for the DKR Drive Controllers series. It regulates three-phase servo axes in machine tools, presses, and material-handling systems by converting line power into controlled current and voltage for compatible synchronous and asynchronous motors. This role allows the controller to manage speed and torque with the precision needed for coordinated motion. It is suited to installations where stable axis response and repeatable positioning are required across continuous industrial duty cycles.

The drive connects to a three-phase supply of 400–480 VAC with a tolerance of ±10%. It provides a continuous shaft power of 26 kW and a continuous output current of 71 A when operated with a 4 kHz pulse-width modulation carrier. Internal logic and I/O electronics are powered from a separate 230 VAC control circuit with a tolerance of ±10%, which allows parameter retention when the main power is isolated and keeps control functions available during shutdown of the power section. Thermal energy is removed by a built-in air blower that directs forced airflow through the unit. The rigid DC bus does not include a brake chopper, so braking energy must be returned to the mains or absorbed mechanically during deceleration.

Communication with the motion controller is handled through the SERCOS interface, which supports deterministic data exchange for coordinated axis control. Connected motors can use digital servo and resolver feedback channels, giving the drive compatibility with common motor feedback arrangements used for speed and position regulation. Total heat rejection reaches 900 W, and the unit has a mass of 49 kg, which affects cabinet ventilation and mounting support. Peak current matches the continuous value at the stated carrier frequency, and the type code indicates a 100 A current class. The product is part of line series 03 and design version 1.