Product Description:

The DKR04.1-W400E-BE59-01-FW is an AC drive controller built by Bosch Rexroth Indramat and belongs to the DKR Drive Controllers series. This Line 04, design version 1 unit is supplied with function module version 01. It modulates power between a plant three-phase supply and compatible servo motors to provide coordinated torque, speed, and position control in machine tools, transfer systems, and material-handling cells. Its modular hardware accepts plug-in option cards, allowing axis configuration and safety monitoring functions to be adapted without changing cabinet layouts. That flexibility is useful in machines where axis requirements vary across product versions but the cabinet structure remains the same.

At a switching frequency of 4 kHz, the unit can deliver a continuous output current of 210 A, which corresponds to a sustained shaft power of 93 kW for connected motors. It accepts a mains supply of 3 x AC 400–480 V with a tolerance of ±10%, and its internal power stage can momentarily furnish a peak current of 282 A during acceleration or shock loads. This combination supports high-power servo operation where both continuous torque and short-duration overload capacity are required. Motion commands and parameter data are exchanged through the SERCOS interface, allowing deterministic communication with the master controller and simpler wiring than analog command schemes. Because command traffic stays on the fiber-optic link, the control path is less susceptible to issues that can affect conventional analog references.

The control electronics are powered separately from the power stage by AC 230 V with a tolerance of ±10%, allowing parameter access even when the drive bus is de-energized. Braking energy is routed to an external bleeder through the integrated chopper, helping keep the DC bus voltage within limits during rapid deceleration. An air channel with a built-in blower removes losses, and the total thermal output is 2500 W, which is used to size cabinet ventilation. Digital servo and resolver feedback inputs support closed-loop operation with different motor feedback types, and the frame weighs 150 kg for vertical mounting that supports airflow within the specified cabinet space. Separate control power also allows status checks and parameter access while the main supply section remains isolated during controlled shutdown conditions.