Product Description:

The DKR02.1-W200B-BE79-01-FW is a digital intelligent AC drive controller manufactured by Bosch Rexroth Indramat and supplied within the DKR Drive Controllers series. It governs high-power servo axes in automated machining centers and material-handling cells, converting line power into regulated three-phase output while exchanging motion commands with the master control system. In this role, the drive regulates motor current so that commanded torque and speed remain stable during demanding production cycles. Overall heat rejected to the cabinet is limited to 1600 W, which helps determine the airflow needed around the drive.

This unit communicates over a SERCOS interface, allowing fiber-optic real-time setpoint and feedback traffic between the controller and the motion system. That communication method supports synchronized command exchange and fast status updates during multi-axis operation. At a switching frequency of 4 kHz, it can deliver a continuous armature current of 120 A, and that output supports approximately 47 kW of continuous mechanical power for the connected motor group. Control electronics are supplied from a separate single-phase bus at AC 230 V, ±10%, while the power section accepts a three-phase mains range of 3 x AC 400 to 480 V, ±10%. Internal air cooling by a built-in blower removes losses from the IGBTs and bus capacitors, and the module processes digital servo and resolver feedback signals for precise speed and position control. The integrated brake resistor converts regenerated energy to heat instead of raising the DC bus, and its thermal design permits 240 kWs of braking energy per event.

An internal bleeder circuit supports deceleration, reinforced by the brake resistor rating of 1.5 kW and a peak drive output current of 141 A for short acceleration bursts. The controller has a mass of 104 kg, which reflects the heavy copper busbars and large heat sink used in this power class. The high mass also reflects the size of the power hardware needed for sustained output. The unit is design version 1, line series 02, and function module version 01.