Product Description:

The DKR03.1-W200Z-B is a digital intelligent AC drive controller produced by Bosch Rexroth Indramat within the DKR Drive Controllers series. It is intended to operate high-torque servo motors through digital feedback loops that support accurate speed and position control. By regulating the three-phase output to the motor, the unit supports automated axes in machining centers, packaging lines, and similar industrial equipment. Its role is to convert incoming supply power into controlled motor power while maintaining stable response under changing load conditions. This makes it suitable for applications that require repeatable motion and dependable torque delivery over a broad operating range.

At a switching frequency of 4 kHz, the controller can deliver a continuous output current of 92 A, which corresponds to a sustained mechanical power of 35 kW when used with compatible motors. The control electronics are energized from a single-phase supply of AC 230 V ±10%, while the power section is cooled by a built-in air blower that directs heat away from the IGBT stack. This arrangement keeps the control supply separate from the main power input and supports stable operation of the drive electronics. The model carries a current rating code of 200, indicating the drive class used for the internal current path. Digital servo and resolver feedback channels support closed-loop operation without the need for separate interface cards.

For short-term overload events, the drive can supply a peak phase current of 141 A. Power is drawn from a three-phase mains supply of 3 x AC 400 to 480 V ±10%, which matches common industrial distribution systems. Under continuous full-load operation, the internal electronics and braking circuitry release up to 1200 W of heat, so cabinet ventilation must remove that thermal load. The unit has a weight of 49 kg, and it is in line series 03 with design version 1, which keeps the mounting format consistent within this product line. The overload and thermal values are important when matching the drive to motor size, enclosure airflow, and available mains capacity.