Product Description:

The DKR03.1-W100N-BE56-01-FW drive controller is manufactured by Bosch Rexroth Indramat and belongs to the DKR Drive Controllers series. It is a digital intelligent AC drive controller that regulates high-power servo and spindle motors in automated production lines. By converting three-phase mains energy into controlled output, it closes torque, speed, and position loops to support precise motion in industrial cells. This type of controller is used where accurate axis response is required across long production cycles and changing load conditions.

Communication with the automation layer occurs through the SERCOS interface, giving the controller a time-synchronized channel for cyclic setpoint exchange and operating data. With a 4 kHz PWM carrier, the power stage delivers 71 A continuous current, which corresponds to 26 kW continuous power for large axis drives without thermal derating. Internal logic is supplied from a separate AC 230 V control voltage, so disturbances on the main power feed do not interrupt the processor supply. Thermal management depends on air cooling from an integral blower that moves ambient air across the heat sink to keep semiconductor temperatures within limits. The controller accepts digital servo and resolver feedback for closed-loop control with high position resolution.

A three-phase 400–480 V power input allows the unit to connect to standard plant supplies. During rated operation, the electronics release about 900 W heat loss, so cabinet ventilation must remove that thermal load. The W100N code marks the current class, and the unit is line series 03 with design version 1. Peak current equals the continuous value for steady-torque applications. Installation is simplified by the controller’s 49 kg mass. Regenerated energy returns to a rigid DC bus because the model is supplied without a brake chopper, so external resistors are needed when high braking power is expected. Function module version 01 completes the configuration.