Product Description:

The DKR03.1-W200B-BE23-01-FW is a drive controller from Bosch Rexroth Indramat in the DKR Drive Controllers series. Installed in a multi-axis automation rack, it conditions three-phase mains power and delivers a regulated DC link for attached servo amplifiers. By integrating command, power, and protective functions in one frame, the unit supports coordinated motion in machining centers, gantry stages, and material-handling cells while keeping bus voltage and fault handling under centralized supervision. It also centralizes bus supervision for multiple axes that share the same power source.

The controller is equipped with bleeder circuitry, so regenerated motor energy is diverted to a resistive dump instead of forcing the DC bus to rise. An internal bus discharge resistor helps prevent overvoltage trips during aggressive deceleration of large inertial loads. Command signals arrive through a SERCOS interface, allowing deterministic fiber-optic communication between the drive and the motion controller. Thermal management relies on a built-in air blower, which draws cabinet air across the heatsink and removes the need for external ducting. Feedback handling accepts digital servo and resolver feedback, so the connected amplifier can process either high-resolution serial encoders or traditional transformer-based position sensors without adapters.

The unit is classified as design version 1, matching the mechanical layout and connector placement released in the third line of the series. Real-time behavior, parameter blocks, and diagnostic routines follow function version 01. The product is part of line series 03, indicating compatibility with power sections rated for 200 A continuous bus current. A removable firmware module holds the operating software used by the unit. These codes describe the controller revision used in the rack.