Product Description:

The DKR03.1-W100B-BE11-02-FW is a digital intelligent AC drive controller produced by Bosch Rexroth Indramat as part of the DKR Drive Controllers series. The unit acts as the power and control stage between the mains supply and a servo or spindle motor, executing drive commands and regenerative braking routines required in automated machining centers and material-handling cells. By combining power conversion with networked motion control resources, it allows high-throughput axes to be managed with repeatable velocity, position, and torque accuracy.

Its mains connection accepts a rated supply voltage of 3×AC 400–480 V ±10%, while a separate control section is energized from AC 230 V ±10%. At a switching frequency of 4 kHz, the power stage can deliver a continuous output of 71 A, matching a current rating of 100 A and reaching the same value for peak bursts during acceleration. Regenerative energy is dissipated by an integrated brake resistor that can handle 1 kW continuously, and cooling is provided by a built-in air blower. The drive’s supply converter, blower, and brake components are coordinated to handle cyclic loads without derating or external chillers.

Under the same 4 kHz switching regime, the inverter section supports approximately 26 kW of continuous shaft power, and the brake resistor can absorb up to 150 kWs of kinetic energy released during rapid stops. Motion commands are exchanged through a SERCOS interface, and position data is returned through digital servo and resolver feedback for dual-channel monitoring. Internal circuitry dissipates a total of 900 W as heat, which is removed by the blower path and routed out of the cabinet. An internal bleeder eliminates external dump hardware, and the assembly is part of Line 03 with design version 1, while the hardware weighs 49 kg for panel-mounted installations.