Product Description:

The DKR04.1-W300N-BA01-01-FW is a drive controller manufactured by Bosch Rexroth Indramat and assigned to the DKR Drive Controllers series. It operates as the power and control stage for high-torque servo motors in machine tools and handling systems. By converting three-phase input into a regulated DC bus and pulse-width-modulated output, the unit coordinates motor torque, speed, and position in industrial automation tasks that require synchronized multi-axis movement. It is suited for applications where several axes must accelerate, decelerate, and hold position under coordinated control.

The device delivers a continuous output of 300 A, allowing large servo motors to reach their rated torque without derating. Thermal energy is expelled through a built-in air blower, so external heat sinks are not required in standard cabinets. Motion and process commands enter through an analog interface, which simplifies linkage to legacy PLCs that generate ±10 V speed or torque references. For rotor position, the controller accepts digital servo and resolver feedback, giving it the flexibility to work with both incremental and absolute encoder systems. Because the DC bus is configured with the lack of a brake chopper, regenerated energy is returned directly to the supply network.

The unit is Version 1 and belongs to Line 04 in the DKR family. Its control package uses function code 01 with function version 01. During intermittent overloads, the inverter can reach its rated current without triggering protective trips, providing headroom for rapid acceleration profiles. These identifiers distinguish the controller from other units in the series that use different control or interface arrangements. The same coding structure separates units with different command and feedback combinations across the DKR range.