Product Description:

The DKC11.3-040-7-NW belongs to the DKC Drive Controllers series produced by Bosch Rexroth Indramat. As a drive controller, it supplies regulated DC power to servo drives and coordinates motion sequences inside multi-axis machining centers, material-handling cells, and packaging lines. Through integrated monitoring of current, voltage, and thermal status, the unit maintains stable motor torque and speed in automated assemblies that demand repeatable positioning and quick cycle changes.

The controller operates from a DC link that is referenced at 700 V, allowing sufficient headroom for dynamic load swings while still matching the voltage class of standard Rexroth supply modules. During continuous duty it can deliver a rated output of 40 A; this value defines the maximum rms current the connected motor windings may receive without exceeding thermal limits. Inrush and short acceleration bursts are handled with an input draw up to 16 A, a figure relevant when sizing upstream circuit breakers and cabling. Internal power semiconductors and gate drivers generate approximately 180 W of self-heat under full load, so cabinet airflow or heat-sink mounting must accommodate that loss. Safe operation is specified only up to an ambient ceiling of 45 °C, after which additional derating or forced cooling becomes necessary.

The mechanical and functional configuration is identified as Design 3, indicating the third hardware revision that aligns with newer firmware and diagnostic features. Fieldbus and encoder wiring are connected through Interface Option 11, a plug set that matches SERCOS-based communication topologies used throughout the EcoLine platform. As an EcoDrive, the device shares common parameter structures with other energy-efficient Rexroth controllers, simplifying commissioning when multiple axes are linked. Despite its 40 A capacity the module weighs only 5.7 kg, so it can be mounted on lightweight DIN rails or slide-in racks without additional structural reinforcement.