Product Description:

The DKR03.1-W200B-BE27-01-FW drive controller is produced by Bosch Rexroth Indramat and belongs to the DKR Drive Controllers series. As a digital intelligent AC drive controller, it supplies regulated three-phase power to large servo or spindle motors and coordinates motion through the SERCOS fiber-optic command interface. Within an automation cell, the unit converts line voltage into controlled motor current, handles dynamic braking energy, and monitors feedback signals so that CNC machines, presses, and handling systems maintain precise torque and speed profiles. Its control architecture supports applications that require stable speed regulation, repeatable positioning response, and continuous coordination between the drive and the connected motor.

The controller is designed for a supply of 3xAC 400–480 V ±10% and has a current rating suited to industrial mains in this voltage class. At a switching frequency of 4 kHz, it can deliver a continuous output of 92 A, translating to about 35 kW of mechanical power to the connected motor. An integrated internal bleeder and a brake resistor rated for 1 kW absorb regenerative energy during rapid deceleration. Thermal management relies on a built-in air blower that forces airflow through the heat sinks to keep the power section within its operating range. Digital servo and resolver feedback channels are provided for real-time position and speed comparison inside the control loop, allowing the controller to work with more than one common motor feedback method.

During short bursts, the inverter can supply up to 150 kWs of braking energy and withstand a peak phase current of 141 A without exceeding protective thresholds. The electronics and blower together reject 1200 W of heat into the cabinet, so enclosure airflow must be sized to remove that thermal load during operation. Auxiliary circuits use 230 V AC control voltage with a ±10% tolerance, and the product weighs 49 kg, so the mounting surface must provide adequate support. The product is part of Line 03 with design version 1 and function module version 01. These identifiers distinguish this build within the DKR platform and help separate it from other line or version combinations.