Product Description:

The DKR02.1-W300B-BE09-01-FW is a drive controller manufactured by Bosch Rexroth Indramat for the DKR Drive Controllers series. Classified as a digital intelligent AC drive controller, it converts three-phase mains power into regulated output for large servo motors in production lines, presses, and handling systems. Its combination of high current capacity and fieldbus communication makes it suitable as the central power stage in multi-axis automation that requires controlled braking and regeneration. In large motion systems, it supplies the regulated current needed for torque, speed, and position control while coordinating with the higher-level machine control.

The power stage accepts a mains supply of 3×AC 400–480 V ±10 %, and motion commands are transmitted through a SERCOS interface optical link. At a 4 kHz switching frequency, the drive can deliver a continuous output current of 141 A and supports motor power up to approximately 55 kW. Short acceleration peaks can rise to 212 A without loss of control. Motor position data is returned through digital servo and resolver feedback for closed-loop operation. Heat generated by these current levels is removed by an internal air blower, and the overall current rating is 300 A for upstream protection sizing. Auxiliary electronics are powered from an AC 230 V control circuit with a tolerance of ±10%.

Dynamic stopping is handled internally by a bleeder and brake resistor that can absorb 1.5 kW continuously and single braking events of up to 240 kWs. This arrangement manages regenerated energy during deceleration without requiring a separate braking stage for normal operation. The power section releases as much as 1800 W of heat, so cabinet ventilation must account for that dissipation. The unit weighs 104 kg, so the mounting structure must support a substantial static load. It belongs to Line 02, uses design version 1, and has function module version 01.