Product Description:

The DKR03.1-W200B-BE56-01-FW is a digital intelligent AC drive controller produced by Bosch Rexroth Indramat within the DKR Drive Controllers series. Designed for multi-axis machinery, the unit converts plant power into precisely regulated three-phase output that drives high-torque servo and spindle motors. Motion commands arrive through a SERCOS interface, while rotor position is managed in closed-loop control by digital servo or resolver feedback channels. Thermal management relies on an integrated blower that forces air across internal heat sinks to keep semiconductor temperatures within safe limits.

The controller is supplied by a three-phase input of 3xAC 400–480 V with a tolerance of ±10%, aligning the unit with standard factory distribution panels. At a switching frequency of 4 kHz, it can deliver up to 35 kW of continuous mechanical output while drawing a sustained phase current of 92 A. For acceleration peaks or shock loads, the current reserve rises to 141 A, allowing the connected motor to overcome static friction without stalling. Internally, the drive is classified in current rating 200 and uses insulated-gate transistors that dissipate roughly 1200 W as heat under nominal load. The unit is line series 03, design version 1, and function module version 01.

The dynamic braking circuit includes an internal bleeder resistor that absorbs regenerative energy. This element is rated for 1 kW of continuous dissipation and can accept up to 150 kWs per braking event, preventing DC-bus overvoltage during rapid decelerations. Auxiliary electronics, fans, and sensors are powered from a single-phase control supply of AC 230 V ±10%, isolating logic from the high-power stage. The steel chassis weighs 49 kg, which should be considered when mounting the controller in elevated or slide-out rack assemblies.