Product Description:

The DKR03.1-W220N-BE48-01-FW drive controller is produced by Bosch Rexroth Indramat and is part of the DKR Drive Controllers series. It is a digital intelligent AC drive controller used in automated machinery to translate network commands into regulated current and voltage for high-power servo axes. Within a multi-axis platform, it manages one motor’s dynamics while the system bus coordinates overall motion, helping maintain precise positioning and repeatable cycle times in production environments. This operating role makes it suitable for systems that need stable motion control under changing load conditions.

The controller exchanges real-time setpoints and status data through a SERCOS interface, allowing deterministic communication with PLCs and other drives. The output stage is powered by a 3xAC 400 ... 480 V, ± 10% three-phase supply, while internal logic and relay circuits use a separate AC 230 V, ± 10% control voltage so disturbances on the power wiring are less likely to affect signal processing. Thermal energy from the IGBT stack is removed by a built-in air blower, eliminating the need for external ducting. The unit uses a rigid DC bus without a bleeder or brake chopper, so regenerative energy must be handled by other modules on the common bus or by the connected supply. Position and velocity loops can be closed with digital servo and resolver feedback, which gives flexibility when matching the controller with compatible motors. This combination of communication, power separation, cooling, and feedback support fits demanding servo applications that require accurate response and consistent regulation.

The product belongs to Line 03 and carries Design Version 1 for this drive platform. It also uses Function Module Version 01 as part of its control configuration. These codes identify the line and version of the unit without changing its primary role as a high-power drive controller.