Product Description:

The DKR02.1-W300N-B is a high-current motion control unit used in automated tooling, presses, and gantries. It converts three-phase mains power into regulated DC and pulse-width-modulated output for large servo motors. This control lets the drive follow CNC or PLC commands while maintaining stable torque and speed during demanding motion cycles. In heavy-duty servo systems, that arrangement supports rapid acceleration, deceleration, and reversal without separating the power stage from the control stage. It is suited to applications that require coordinated motion and consistent response under changing loads.

The power section has a 300 A continuous current rating, allowing sustained operation on large servo axes. Thermal management is provided by a built-in air blower that moves air across the heat sinks inside the unit. The drive uses no brake chopper, and its rigid DC bus returns regenerative energy to the shared supply instead of dissipating it as heat. It supports digital servo and resolver feedback, so the controller can work with either high-resolution encoder signals or traditional resolver inputs. This combination supports closed-loop operation in applications that require accurate speed regulation and repeatable positioning under varying loads. The unit is Version 1 and uses the base design for this model.

The drive belongs to line series 02 and is part of the DKR Drive Controllers series from Bosch Rexroth Indramat. It is intended for coordinated multi-axis systems where the power stage must respond quickly to changing load conditions and repeated acceleration. Because regenerated energy is sent back through the DC bus, the surrounding supply system must be able to absorb return power during braking. This arrangement is common in machines where several axes share one supply architecture and exchange motion data with a central controller. Its layout supports installation in industrial control cabinets that use centralized power distribution and closed-loop motor control.