Product Description:

The DKR02.1-W300N-BE79-01-FW is a drive controller manufactured by Bosch Rexroth Indramat and included in the DKR Drive Controllers series. It is a Digital Intelligent AC Drive Controller used to regulate large synchronous or asynchronous servo axes in automated machining centers and production cells. By processing torque and velocity commands, the unit links the plant-level motion program to the connected power section. This arrangement lets the controller serve as the main actuator interface between higher-level control logic and the motor-driven axis. It is suited to applications where accurate coordination of large servo axes is required over repeated production cycles.

Internally, the controller communicates with a PLC over the SERCOS interface, while encoder signals are accepted through digital servo and resolver feedback channels for closed-loop positioning. The controller uses a rigid DC bus without a brake chopper, so regenerated energy remains in the intermediate circuit instead of being dissipated internally. Under 4 kHz switching, the power stage delivers a continuous current of 141 A and a continuous mechanical output of approximately 55 kW. Support electronics require a control supply of AC 230 V ± 10%, and the heat sink is cooled by a built-in air blower. The product is part of Line 02, Design Version 1, and Function Module Version 01.

The mains section accepts a power supply of 3 x AC 400 to 480 V ± 10% and can respond to transient demands with a peak current of up to 212 A. During sustained production, the power electronics dissipate 1800 W of heat, so cabinet ventilation must remove that thermal load from the enclosure. The assembled unit weighs approximately 104 kg, which affects panel support and handling during installation. Its size and heat output should be considered when placing it beside spindle inverters and other auxiliary axes in the same cabinet.