DKR03.1-W100N Bosch Rexroth Indramat
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The Bosch Rexroth Indramat DKR03.1-W100N is part of the DKR Drive Controllers series and is classified as a digital intelligent AC drive controller. It has a continuous power output of about 26 kW at 4 kHz and a peak current rating of 71 Amps. The unit operates on a rated power voltage of 3xAC 400 to 480 V and uses air cooling with a built-in blower; it weighs approximately 49 kilograms.
Internal Product Review
The DKR03.1-W100N is a Bosch Rexroth Indramat DKR drive controller with air cooling from a built-in blower. At 4 kHz, continuous output reaches about 26 kW, and rated operation on 3xAC 400 to 480 V suits mainstream industrial power systems. A 71 A continuous current rating makes the unit a strong fit for demanding AC drive applications.
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Product Description:
The DKR03.1-W100N is a digital intelligent AC drive controller manufactured by Bosch Rexroth Indramat for the DKR Drive Controllers series. Designed for multi-axis automation, this unit converts three-phase mains power into a regulated DC link and insulated-gate bipolar output stages that command servo and spindle motors in CNC machines, presses, and automated handling equipment. It combines torque, speed, and position control in a single housing so coordinated axes can follow commanded motion with repeatable accuracy. This arrangement supports the stable motion control required in industrial production lines.
For electrical integration, the controller accepts a logic supply of AC 230 V ±10% and a three-phase power bus of 400–480 V AC within a ±10% tolerance. In Line 03 and design version 1, the power stage is rated for a continuous motor current of 71 A at a 4 kHz switching frequency, delivering sustained shaft power of 26 kW. The unit has a drive current class of 100, indicating compatibility with machines that operate in this current range during dynamic moves. Short acceleration bursts are supported, and the integrated built-in air blower channels cooling air through the heat sink to keep semiconductor temperatures within safe limits. The switching behavior helps the controller maintain stable current regulation during demanding motion cycles.
The power circuitry ties directly to a rigid DC bus and operates without a brake chopper, so excess regenerative energy must be handled by the installation's common supply or by mechanical damping. Thermal management includes a total loss figure of 900 W, which helps enclosure ventilation be sized accurately for continuous operation. The housing weighs 49 kg, allowing installation in a standard 19-inch rack or on a backplane with conventional lifting aids. Its form factor is suitable for typical industrial cabinet layouts where drive modules are mounted in organized multi-axis assemblies.
