Product Description:

The DKR04.1-W400N-BE12 is a drive controller supplied by Bosch Rexroth Indramat and positioned within the DKR Drive Controllers series. The unit forms the power and regulation core between an industrial power bus and a synchronous or asynchronous servo axis. In automated machine tools, packaging lines, and handling systems it converts incoming DC energy to three-phase output while executing motion commands from a higher-level controller. Its role is to deliver controlled torque, velocity, and positioning for motors used in multi-axis automation.

Communication flows through the SERCOS interface, so all setpoints, status words, and diagnostics are exchanged in real time to maintain deterministic axis timing. Thermal management relies on a built-in blower, which moves ambient air across internal heat sinks and eliminates the need for cabinet chillers. The control loop processes position and velocity data coming from digital servo and resolver feedback, allowing the drive to work with either serial encoders or analog resolvers without external converters. Power circuitry is configured as a rigid DC bus, meaning there is no internal bleeder or brake chopper; regenerative energy must be handled at the common supply level or returned to the mains.

As a first-generation release, Design Version 1 aligns mechanically and electrically with earlier supply modules while adopting newer firmware routines. Catalog placement in Line Series 04 indicates compatibility with axis modules of similar current ratings, simplifying spare-part grouping on the production floor. Within the engineering roadmap of Bosch Rexroth Indramat, the controller extends the functional range of the DKR Drive Controllers by offering unified parameter sets across the broader DKR series, so commissioning staff can clone settings and minimize downtime.