Product Description:

The DKR03.1-W200N-BE05-01 drive controller is manufactured by Bosch Rexroth Indramat as part of the DKR Drive Controllers series. It is a digital intelligent AC drive controller intended to regulate large servo or spindle motors in automated production cells through closed-loop speed and torque control. It serves as the power and regulation stage between a shared supply system and the motor, converting bus energy into controlled output for demanding motion tasks. The unit uses a rigid DC bus and does not include an integrated brake chopper, so it interfaces directly with external braking components inside multi-axis cabinets.

The controller operates from a three-phase power bus rated at AC 400–480 V ±10% and communicates with the motion system over a SERCOS interface. At a 4 kHz switching frequency, it supplies a continuous armature current of 92 A, while short-duty peaks can reach 141 A, matching the internal current rating of 200 A indicated by the type code. Thermal energy is removed by air cooling with a built-in blower, so unobstructed airflow is required instead of external liquid circuits. Because there is no internal bleeder, regenerative energy is returned to the DC link and requires a common chopper unit elsewhere in the drive stack. This arrangement supports use in cabinets where several coordinated axes share common power components and braking hardware. Digital servo and resolver feedback inputs allow the controller to work with optical encoders or resolver signals for closed-loop position control.

Auxiliary electronics are powered by a separate control supply of AC 230 V ±10%, isolating logic functions from mains fluctuations. Under nominal conditions, the inverter section can deliver about 35 kW of mechanical power to the connected motor, and the switching devices dissipate up to 1200 W as heat that must be removed by cabinet ventilation. The housing weighs 49 kg, which is relevant for rail or backplate sizing in large control cabinets. Its size and heat output make enclosure layout, mounting strength, and airflow path important parts of the installation. This unit is line series 03, design version 1, and function module version 01.