Product Description:

Bosch Rexroth Indramat builds the DKR02.1-W300N-BE84-01-FW as part of the DKR Drive Controllers series. The unit is a digital intelligent AC drive controller that governs high-power servo or spindle motors in production lines, machining centers, and other automated equipment. By adjusting output current and monitoring feedback in real time, the controller supplies precise torque and speed commands needed for closed-loop motion tasks. This supports stable axis response when the connected motor must follow changing load demands or tightly controlled speed profiles.

The drive links to the motion control network through the SERCOS interface, allowing deterministic command exchange with PLCs. At a switching frequency of 4 kHz, it can deliver a continuous phase current of 141 A, which corresponds to about 55 kW of usable mechanical power for connected motors. For acceleration bursts, the output rises to 212 A without exceeding thermal limits. The power section is fed from 3 x AC 400 to 480 V mains, while internal logic and contactors use a separate AC 230 V control supply so command circuits can remain isolated from the high-energy bus. Digital servo and resolver feedback inputs keep the current loops synchronized with actual rotor position, helping the drive maintain position accuracy at elevated carrier frequencies.

Thermal management relies on a built-in air blower that forces airflow across the heat sinks and releases about 1800 W of waste heat into the cabinet. Because the unit is built without a bleeder or brake chopper, the rigid DC bus must be paired with an external resistor or regenerative module when large inertial loads require dynamic braking. The mechanical enclosure weighs 104 kg, so cabinet mounting must account for both static load and vibration from the integral fans. Forced airflow also requires cabinet ventilation capacity that matches the heat released by the controller during sustained output. The listed design version 1 and function module version 01 identify the product generation used for this controller.