Product Description:

The DKR03.1-W200N-BE95-02-FW is a digital intelligent AC drive controller manufactured by Bosch Rexroth Indramat and supplied within the DKR Drive Controllers series. The unit is designed to modulate power for high-torque servomotors in machining centers, handling equipment, and other automated axes, converting mains energy into adjustable voltage and current while executing position and velocity loops in real time.

Its command channel is the SERCOS interface, which provides fiber-optic, cyclic data exchange between the drive and a motion controller. The power section accepts a 3-phase 400–480 V AC mains supply with ±10 % tolerance, while internal logic derives auxiliary power from a 230 V control inlet. At a 4 kHz switching frequency the inverter can supply a continuous armature current of 92 A, translating into a steady mechanical output of 35 kW. These figures allow large feedscrews or spindle motors to run without derating during normal duty. The rating code “200” indicates an admissible line current class of 200 A, and the line series 03 with design version 1 identifies hardware generation for spare-part matching.

Short bursts of load are covered by a peak output of 141 A, giving extra acceleration before thermal limits intervene. During operation the electronics eject approximately 1200 W of heat, which the built-in blower moves away via forced air cooling through the heatsink channels. Motion feedback from the connected motor is processed through digital servo and resolver feedback, enabling automatic switchover between fine position data and coarse rotor reference. The rigid DC bus is specified without a brake chopper, so braking energy must be dissipated mechanically or returned to the supply. Despite its sizeable output stage, the assembly weighs only 49 kg, allowing panel mounting with standard reinforcement.