Product Description:

The DKR02.1-W300N-BE09-01-FW is a drive controller manufactured by Bosch Rexroth Indramat for the DKR Drive Controllers series. It belongs to Line 02, has design version 1, and uses function module version 01. Classified as a digital intelligent AC drive controller, the unit regulates high-power servo and spindle axes in automated machinery. By combining power electronics with closed-loop regulation, it converts incoming three-phase power into controlled motor currents so motion profiles can be carried out accurately. This operating principle supports precise speed, torque, and position control during demanding axis movements.

The controller accepts a mains supply of 3 x AC 400–480 V, ±10% and is powered internally by a control voltage of AC 230 V, ±10%. With a pulse-width modulation frequency of 4 kHz, it sustains 141 A of continuous output current and delivers approximately 55 kW of drive power during steady operation. Momentary load peaks are handled with a drive current ceiling of 212 A, while the nominal current rating is 300 A for the power section. Motion commands and parameter data are transferred through the SERCOS interface, allowing deterministic fiber-optic communication with higher-level PLCs. The DC bus has no brake chopper, so excess regenerative energy must be routed to external components.

Thermal management relies on a built-in air blower that moves cabinet air across the heat sinks, and this cooling path must remove up to 1800 W of dissipated power during full-load cycles. The integrated blower and no-bleeder configuration reduce wiring complexity, but the rack still requires adequate surrounding airflow. Total mass is approximately 104 kg, so the mounting structure must support both static and dynamic loads. Motor position signals are processed through digital servo and resolver feedback, allowing the controller to match each axis to its electrical angle after a restart. This feedback arrangement supports both servo motor and resolver-based axis configurations.