Product Description:

The DKR05.2-W500F-BE12-01-NNSN-FW is a drive controller manufactured by Bosch Rexroth Indramat for the DKR Drive Controllers series. It operates as a digital intelligent AC drive that works with servo or spindle motors to regulate motion in industrial automation cells. Power conversion, feedback processing, and network communication are combined in a single cabinet module, reducing the need for separate control hardware inside the drive assembly and allowing the controller to manage both dynamic acceleration and stable speed regulation from one platform.

In normal operation, the unit supplies a nominal phase current of 500 A, allowing it to energize large motors without external boosters. Heat generated by switching losses is removed by a built-in air blower, and the remaining 6.2 kW of loss appears as thermal load that must be managed inside the enclosure. Command data is exchanged over the SERCOS interface, so the controller can connect directly to fiber-optic real-time networks used for synchronized motion control. The DC link uses a floating DC bus with no brake chopper, so excess regenerative energy must be handled by external resistors or line-side equipment rather than by an internal bleeder. This arrangement is used where braking energy is redirected or dissipated outside the controller.

System capacity reaches 165 kW of motor output at 400 V, which suits heavy-duty axes in presses, mill drives, or extruders. The controller frame is finished in pebble gray and weighs 550 kg, so the installation must account for its large cabinet mass and support requirements. Motor position is processed through digital servo and resolver feedback, allowing the drive to work with more than one encoder format in Function Module version 01. A lockable door that accepts a 7 mm three-square wrench and a door-mounted main switch are included, and the unit belongs to line series 05 with design version 2.