Product Description:

The DKR02.1-W200N-BE24-01-FW drive controller is produced by Bosch Rexroth Indramat and belongs to the DKR Drive Controllers series. As a digital intelligent AC drive controller, it regulates three-phase servo and spindle motors in industrial automation lines where rapid torque response and coordinated motion are required. The unit converts plant supply power into controlled output currents for the motor while monitoring feedback devices for closed-loop accuracy. Its DC bus design without an internal brake chopper suits machinery that returns regenerated energy to external components or mechanical loads.

At a switching frequency of 4 kHz, the drive can supply a continuous phase current of 120 A, producing roughly 47 kW of continuous mechanical power when paired with compatible motors. Transient acceleration demands are handled by a peak output of 141 A, and the controller’s internal rating of 200 A sets the protective current limit in the power section. The control circuit accepts AC 230 V for logic and fans, while the power stage operates from a three-phase supply of 3×AC 400-480 V with a ±10% tolerance. During operation, the electronics and IGBTs release up to 1600 W of heat that must be removed by the installed blower.

System integration is performed through the SERCOS interface, allowing cyclic setpoint transmission and diagnostic feedback to higher-level PLCs. Position and speed loops can be closed with combined digital servo and resolver feedback, giving flexibility for both high-resolution encoders and rugged resolver transducers on the motor side. Thermal management relies on forced air drawn through a built-in blower, and the controller has a mass of 104 kg. The unit is part of Line 02, with design version 1 and function module version 01.