Product Description:

The DKR02.1-W300B-BE56-01-FW is a digital intelligent AC drive controller manufactured by Bosch Rexroth Indramat and included in the DKR Drive Controllers series. Designed for multi-axis machinery, the unit coordinates high-power servo motors through its SERCOS fiber-optic interface while processing digital servo or resolver feedback loops. Its integrated bleeder circuit and built-in blower allow the controller to absorb regenerated energy and maintain stable operating temperature during demanding motion cycles. Because motion commands and feedback are processed within the same controller, the unit can support tightly regulated speed and position response across coordinated axes. This makes it suitable for presses, gantries, and other automation stages that require rapid acceleration and repeatable position control.

The drive operates from a three-phase rated power supply of 3xAC 400 … 480 V ± 10%, and its logic circuits are supported by a separate control voltage of AC 230 V ± 10%. The separate control supply keeps the electronics powered independently from the main power section and supports orderly startup behavior in larger machine cabinets. At a 4 kHz switching frequency, the power stage delivers a continuous output of 55 kW while supplying motors with up to 141 A of RMS current. That output level supports demanding servo applications that require sustained torque as well as fast dynamic response. Cooling is provided by a built-in air blower, so enclosure heat is removed without external chillers.

During deceleration events, the integrated brake resistor can dissipate 1.5 kW continuously and absorb up to 240 kWs of energy in short bursts, which helps protect the DC link from excess regenerated energy. The power electronics tolerate transient demand by furnishing a peak motor current of 212 A. Overall system losses are rated at 1800 W, which should be considered when planning cabinet ventilation around adjacent modules. Despite its high rating, the controller has a mass of approximately 104 kg, and that weight should be considered when preparing mounting points and lifting arrangements. The product is Line 02 with design version 1 and function module 01.