Product Description:

The DKR02.1-F300N-BE06-01-FW is a drive controller produced by Bosch Rexroth Indramat as part of the DKR Drive Controllers series. It is used in multi-axis machining centers, printing lines, and material-handling cells where accurate control of servo and spindle motors is required. By linking its power stage to a rigid DC bus, the unit directs electrical energy to the connected motors for responsive speed, torque, and position control. That makes it suitable for systems that must combine steady spindle regulation with rapid servo positioning.

The controller delivers a continuous current of 141 A at a 4 kHz switching frequency and can provide up to 55 kW of motor power under steady load. During acceleration, it can supply as much as 212 A for short-term demand. The control electronics run from AC 230 V ±10%, while the power stage operates on 3xAC 400–480 V ±10%. Internal losses appear as 1800 W of heat, so the cooling circuit must remove that thermal load during operation. Because the DC link has no brake chopper, regenerated energy must be absorbed elsewhere in the system. The current rating index of 300 is used when selecting wiring and protective devices for the installation.

Thermal stability is supported by a liquid coolant channel through the rear heat sink, and the unit has a mass of 104 kg. Axis commands are transferred over the SERCOS interface, while position data is returned through digital servo and resolver feedback so the controller can work with more than one feedback method. This is useful in machines where different motor types are installed on the same control platform. The module is part of line series 02 and uses design version 1 with function module version 01. Its rigid DC bus layout allows recovered energy from one axis to be used by another axis during normal multi-axis operation.