Product Description:

The DKR02.1-W300N-BE45-01-FW is a digital intelligent AC drive controller developed by Bosch Rexroth Indramat for the DKR Drive Controllers series. In automated machining centers and material-handling systems, it converts line power into regulated three-phase output for servo motors, coordinates motion through network commands, and monitors axis status. It serves as the central power and control stage between the supply network, the motion controller, and the connected motor. The unit belongs to line series 02 with design version 1 and function module version 01, and it matches motors that use digital servo feedback or resolver feedback while operating from a rigid DC bus without a bleeder or brake chopper.

At a switching frequency of 4 kHz, the drive can supply a continuous output current of 141 A, equating to roughly 55 kW of mechanical power when paired with matching motors. During fast accelerations, the power stage tolerates a peak current up to 212 A, which supports dynamic axis loads while remaining within the unit's overall current rating of 300 A. This operating margin helps the controller handle brief overload conditions during acceleration and deceleration cycles. Command and diagnostic data move through the SERCOS interface, so multi-axis systems can synchronize over fiber optics with very low timing variation. Internal logic and control circuits are energized from a separate AC 230 V ±10 % supply, allowing the main power section to be isolated while control electronics remain available. Thermal energy generated by the IGBTs is expelled by an integrated built-in air blower cooling circuit, keeping semiconductor junction temperatures within limits without external chillers. Separate control power also allows status communication to remain available when the main power path is shut off.

The power section is designed for a mains input of 3×AC 400 … 480 V ±10 %, so cabinet components must be rated for the same industrial voltage class. This range is typical for industrial three-phase installations used in large automation panels. Under nominal load, it sheds around 1800 W of heat, and this value should be considered when cabinet airflow and enclosure size are planned. When several high-power drives are mounted close together, that heat load can influence spacing and ventilation requirements inside the enclosure. With a transport mass of 104 kg, the controller requires lifting equipment for installation and removal.