Product Description:

The DKR03.1-W100Z-BE23-01-FW is a digital intelligent AC drive controller manufactured by Bosch Rexroth Indramat for the DKR Drive Controllers series. Installed between the plant power distribution and connected servo motors, it interprets motion commands and regulates three-phase output so axes follow programmed velocity and torque profiles. In multi-axis machinery, it serves as the electrical interface between higher-level control commands and the power delivered to the motor windings. The controller manages torque and speed regulation so motor output stays aligned with commanded motion under changing load conditions.

Communication with the supervisory PLC occurs over the SERCOS interface, allowing deterministic update cycles and standardized parameter access. This communication method supports cyclic command exchange and synchronized response across networked axes. At a switching frequency of 4 kHz, the drive can deliver 71 A of continuous current, which corresponds to 26 kW of motor power. An auxiliary supply of AC 230 V powers the control electronics so logic functions can remain active during main-power lockout. Thermal losses are removed by air cooling with a built-in blower. The product is part of Line 03, has a current rating of 100, and is Version 1 with Function ID 01.

The power stage accepts 3×AC 400–480 V mains input for standard industrial supply systems. For short acceleration periods, the peak current matches the continuous value before the drive returns to steady operation. Under full electrical load, the unit dissipates 900 W of heat, so cabinet ventilation must remove that heat from the enclosure area, especially when other power devices are mounted nearby. Feedback channels support digital servo and resolver feedback, allowing connection to either digital encoder systems or analog resolver signals without extra interface hardware. A mass of 49 kg gives the enclosure substantial structure for the power section and supports stable mounting in the drive cabinet.