Product Description:

The DKR03.1-W100B-BA01-01-FW is a member of the DKR Drive Controllers series manufactured by Bosch Rexroth Indramat. Classified as a Digital Intelligent AC Drive Controller, it governs torque, speed, and position for large synchronous or induction motors used in presses, gantry modules, and machine tools. The controller integrates power processing, regenerative braking, and diagnostics so that a central PLC can issue motion commands while the unit closes the feedback loop with digital servo or resolver signals from the motor. This arrangement supports closed-loop control on heavy-duty axes where accurate motor response is required during changing loads and repeated motion cycles.

With a switching frequency of 4 kHz, the drive can supply a continuous phase current of 71 A, giving an output of approximately 26 kW to the motor. Power is drawn from a 3 x AC 400–480 V ±10% mains line, while the control electronics are energized by a separate AC 230 V ±10% service supply. Thermal losses are removed through an integral blower, and overall heat dissipation reaches 900 W under nominal load. An analog command interface carries velocity or torque references from upstream motion cards, which allows the unit to receive external setpoint signals for coordinated machine operation. Line series 03, design version 1, and current rating 100 identify the drive frame used within this series.

Dynamic stopping is handled by an integrated brake resistor, and the unit includes an internal bleeder so excess DC-bus energy is converted to heat locally. The resistor supports 1 kW continuous power and can absorb up to 150 kWs of braking energy, allowing repeated decelerations without an external chopper. Function module 01 in version 01 provides application-specific logic while preserving the same outline used for line series 03. The housing, cabling glands, and built-in fan bring the total mass to 49 kg, which is relevant for panel mounting and lifting. Local energy dissipation is useful in applications where braking events occur often and regenerated energy must be managed inside the drive assembly.