Product Description:

The DKR03.1-W100N-BE15-01-FW is a digital intelligent AC drive controller produced by Bosch Rexroth Indramat and supplied within the DKR Drive Controllers series. Designed to command high-power servo and spindle axes, the unit acts as the central power stage between the plant’s three-phase mains and the connected motor. It converts incoming AC into a regulated DC link and modulates it back to controlled output waveforms, allowing precise torque, speed, and position regulation for industrial automation equipment such as machining centers and transfer lines.

During continuous operation at a 4 kHz switching frequency, the drive can deliver 71 A of output current, which corresponds to a sustained mechanical output of 26 kW. The power section is supplied from a mains range of 3×AC 400–480 V ±10%, while internal electronics are energized from a separate control supply of AC 230 V ±10%. Command and diagnostic traffic is exchanged through a SERCOS interface, and position data are returned through digital servo and resolver feedback. This interface pairing permits synchronized multi-axis motion with deterministic timing in CNC and handling systems.

Thermal management is handled by an integrated blower that provides forced-air cooling through the heat sink; with this method, total waste power is limited to 900 W and is kept outside the control cabinet envelope. The rigid DC bus is built without a brake chopper or bleeder, so external energy absorption hardware must be provided when regenerative braking exceeds the bus capacity. Mechanical installation is simplified by a mass of 49 kg and clearly marked terminals. The unit belongs to line series 03, design version 1, and function module version 01, while a current rating of 100 places the controller in a matching motor power class.