Product Description:

The DKR03.1-W200B-BE84-01-FW is a digital intelligent AC drive controller produced by Bosch Rexroth Indramat and positioned within the DKR Drive Controllers series. As part of the Digital Intelligent AC Drive Controller range, the unit commands high-power servo axes in automated machinery where precise torque and speed regulation are required. By combining a SERCOS interface command channel with digital servo and resolver feedback, it links motion hardware to centralized CNC or PLC controls while handling its own closed-loop regulation. This arrangement allows command processing and motor feedback evaluation to remain inside the controller. The W200B configuration places the unit in the 200 current class, and the internal bleeder dissipates regenerated energy without external accessories.

The drive uses a three-phase supply of 3xAC 400–480 V with an allowable deviation of ±10%. Control electronics are powered separately at AC 230 V, which allows the logic section to remain active while the main power wiring is isolated. When operated with a 4 kHz PWM carrier, the controller can deliver a continuous output current of 92 A and about 35 kW of mechanical power, while momentary demand can rise to 141 A for rapid acceleration. Cooling air is moved by a built-in blower so the drive can maintain these values without derating. The separate supply arrangement also supports monitoring and control functions during power-stage service conditions.

Energy returned during deceleration is routed to an internal brake resistor rated at 1 kW continuously with a capacity of 150 kWs per braking event. In standard duty cycles, the electronics and blower together release 1200 W of heat to the cabinet environment, so enclosure ventilation must account for that thermal load. The frame weighs 49 kg, and the unit is design version 1, function module 01, and line series 03. Motor data channels support both digital servo and resolver signals, and the communication path preserves deterministic control timing. The current class allows the controller to pair with large MSK or 1MB motors for high-power axis applications.