Product Description:

The DKR03.1-W200N-BE12-00 is a digital intelligent AC drive controller produced by Bosch Rexroth Indramat in the DKR Drive Controllers series. It conditions three-phase mains power into regulated pulses that command servo or spindle motors, enabling closed-loop speed and torque control in CNC machines, material-handling axes, and other automated equipment. Within an automation cell, the unit links motion hardware to control software.

The device communicates with a higher-level PLC through the SERCOS interface, providing deterministic real-time command exchange and diagnostic data. At a 4 kHz PWM frequency, the inverter delivers 92 A continuously, which corresponds to approximately 35 kW for the attached motor load. Control electronics draw auxiliary power from a dedicated AC 230 V feed, isolating logic circuits from the high-energy DC link. The mains supply for the power section must be within 3 x AC 400 to 480 V ±10%, matching common plant distribution voltages. The product is part of Line 03 and uses design version 1 with function module version 00 and a current rating of 200.

For short acceleration bursts, the drive can raise output to 141 A peak, giving axes the extra torque required for rapid positioning. Internal temperatures are moderated by forced ventilation, and the cooling method is a built-in air blower that directs flow across heat sinks and control boards. Under full electrical load, this arrangement removes 1200 W of waste heat that must be extracted from the cabinet by ancillary fans or ducting. The housing weighs approximately 49 kg, so the mounting structure must support that mass during installation. Because the DC link is rigid and no brake chopper is installed, regenerated energy must be routed to an external bleeder or recovered by the power grid. Closed-loop performance is supported by combined digital servo and resolver feedback channels that report rotor position with high resolution to the controller.