Product Description:

The DKR03.1-W100N-BA01-01-FW is an AC drive controller produced by Bosch Rexroth Indramat within the DKR Drive Controllers series. The unit supervises synchronous and asynchronous servo motors in multi-axis machinery by supplying regulated three-phase power and closing the control loop with motor feedback. Its power section is tied to a rigid DC bus without a brake chopper, so regenerated energy is returned to the supply network instead of being dissipated in a bleeder. Because the controller handles both power conversion and feedback processing, it supports stable motor response during changes in load and commanded speed.

Control commands arrive through an analog interface that lets the PLC send velocity or torque setpoints as differential voltages. This command method suits systems that use conventional setpoint signaling rather than network-based motion commands. At a switching frequency of 4 kHz, the power stage delivers 71 A continuously and provides 26 kW to the connected motor group. Internal logic and I/O operate from a separate AC 230 V control supply, which helps keep the control section active during power-side disturbances. Thermal management relies on forced air cooling from a built-in blower, so cabinet airflow must account for the heat produced by the power electronics. Peak current matches the continuous current at this switching frequency.

During operation, the controller dissipates 900 W of heat, which must be considered when sizing enclosure ventilation. The housing mass of 49 kg helps keep the unit stable after installation and during machine vibration. The mains connection requires 3x AC 400–480 V with a ±10% tolerance, matching common industrial power feeders. Position data is processed through digital servo and resolver feedback, allowing the drive to work with compatible motor feedback systems. Configuration values such as design version 1, line series 03, and function module set 01/01 identify the control variant used on the DKR platform.