Product Description:

The DKR03.1-W200N-BE15-01-FW is a digital intelligent AC drive controller produced by Bosch Rexroth Indramat for the DKR Drive Controllers series. Within an automation cell, this unit links the mains supply to a servo motor and modulates torque and speed with closed-loop precision suitable for high-inertia axes and spindle drives. By combining power conversion, feedback evaluation, and motion commands in one housing, the controller serves as the central actuator interface for machine tools, printing lines, and other applications that require coordinated multi-axis positioning.

At a switching frequency of 4 kHz, the drive can deliver a continuous output current of 92 A. This corresponds to a sustained mechanical power of 35 kW when the unit is paired with compatible motors. The incoming three-phase supply must remain within 3x AC 400 to 480 V ±10%, and the internal power stage tolerates momentary load spikes up to 141 A without loss of regulation. The IGBT bridge and control electronics generate up to 1200 W of heat, so the cabinet must provide adequate ventilation. Because the unit has a rigid DC bus and no bleeder or brake chopper, excess regenerative energy must be handled by external circuitry. Digital servo and resolver feedback channels close the position loops, and the 200 current class in the type designation corresponds to the conductor cross-sections used with this frame size.

Low-level logic is powered from a separate AC 230 V supply that can fluctuate by ±10% without disturbing operation. Real-time motion commands arrive through the SERCOS fiber-optic interface, which synchronizes the controller with other drives on the ring. Heat is removed by an internal built-in air blower, so no external coolant is required, and the assembled unit weighs 49 kg. The unit is part of Line 03, Design Version 1, and Function Module Version 01.