Product Description:

Bosch Rexroth Indramat produces the DKR02.1-W300N-BE80-01-FW, a digital intelligent AC drive controller in the DKR Drive Controllers series. The unit acts as the central power stage for high-power servo and spindle axes, converting the plant’s three-phase supply into regulated motor current while executing motion commands from the machine control. In industrial automation, it maintains torque, speed, and position accuracy for demanding cutting, forming, and packaging equipment that relies on rapid closed-loop motor regulation.

Motion commands reach the controller through the SERCOS interface, so cyclic data exchange uses standardized fiber-optic networking. Power delivery begins with a DC link supplied from the converter section by 3xAC 400 … 480 V ±10% mains. Internal logic and I/O are energized separately by an AC 230 V ±10% control supply, which allows diagnostic functions while the main bus is de-energized. Under continuous loading at a 4 kHz switching frequency, the drive supports 55 kW of motor output and delivers a continuous current of 141 A. The 300 A current rating encoded in the type code provides thermal headroom, and the rigid DC bus construction operates without a brake chopper, so regenerated energy must be handled externally. Digital servo or resolver feedback channels close the current, velocity, and position loops.

Process peaks are accommodated by a short-term output of 212 A, allowing fast acceleration of large inertial loads before the controller returns to continuous limits. The integrated built-in air blower removes waste heat, and this cooling method contributes to a total thermal loss of 1800 W that must be removed from the cabinet air path. With the enclosure and power modules installed, the device weighs 104 kg, which is an important consideration for panel reinforcement and handling. Design version 1, function module version 01, and line series 02 identify the unit within the product range.