Product Description:

The DKR03.1-W200N-BA34-01-FW is a Digital Intelligent AC Drive Controller produced by Bosch Rexroth Indramat within the DKR Drive Controllers series. It is used in industrial automation to energize and regulate servo or spindle motors, converting line power into controlled three-phase outputs while exchanging setpoint data through an analog command interface. This arrangement lets the drive respond to command changes quickly while maintaining stable motor operation during changing load conditions.

At a 4 kHz switching frequency, the unit supplies a continuous output of 92 A, allowing sustained operation of high-torque axes, and it can deliver about 35 kW of mechanical power from the DC link under the same conditions. Transient overloads are handled by a peak current reserve of 141 A, and thermal management is supported by a total heat dissipation of 1200 W. Internal electronics are powered from a control supply of AC 230 V ±10%. The controller is cooled by air drawn through a built-in blower, and its DC bus is rigid because no bleeder or brake chopper is installed.

The power stage accepts mains between 3xAC 400–480 V ±10%, matching common plant distribution networks. Drive size W200 corresponds to a nominal capability of 200 A, giving headroom between continuous and absolute limits. Motor position is processed through digital servo and resolver feedback, supporting both high-resolution encoders and legacy resolvers in mixed installations. Mechanical installation is eased by a mass of 49 kg, and identification is completed by line series 03, design version 1, and function module version 01. The absence of a brake chopper means external dynamic braking resistors cannot be used, so rapid deceleration must rely on regenerative operation or a mechanical brake.