Product Description:

The DKR03.1-W100N-BA05-01-FW is an AC drive controller produced by Bosch Rexroth Indramat and assigned to the DKR Drive Controllers series. It belongs to the Digital Intelligent AC Drive Controller product group and is intended to supply and regulate high-power servomotors in automated machining, printing, and handling lines. By combining power conversion, closed-loop control, and drive monitoring in one housing, the unit forms the central interface between motion commands and mechanical output stages. It is part of line series 03 with design version 1 and function module version 01.

The power section accepts three-phase mains at 3xAC 400–480 V with a ±10% tolerance, while the logic stage requires a separate AC 230 V control supply. Operating with a 4 kHz switching frequency, it provides a continuous armature current of 71 A, which corresponds to about 26 kW of usable shaft power for the connected motor. Command signals arrive through an analog interface, enabling direct ±10 V speed or torque setpoints from standard motion controllers. This arrangement supports straightforward integration with equipment that uses conventional analog command channels instead of a dedicated communication bus. Internal IGBTs are cooled by forced air from the built-in blower, helping keep semiconductor temperatures within an acceptable range during sustained duty cycles.

The design omits a brake chopper, so regenerative energy must be handled by external system components during deceleration events. Position and speed feedback can be evaluated as digital servo and resolver feedback, allowing flexible pairing with diverse transducer hardware. The power stage carries a current rating of 100 A, and its internal losses appear as only 900 W of heat, which helps simplify enclosure ventilation planning. Fully assembled, the controller weighs 49 kg, so the mounting panel should be able to support the unit securely during installation and operation.