Product Description:

The DKR02.1-W300Z-BA01-01-FW is a digital intelligent AC drive controller produced by Bosch Rexroth Indramat for the DKR Drive Controllers series. It modulates high-power three-phase input to control large servo and spindle motors used in presses, machining centers, and automated handling systems. Acting as the axis inverter, it supplies regulated current, monitors feedback, and executes protective functions that are essential for precise and reliable motion in industrial automation cells.

At a PWM frequency of 4 kHz, the inverter sustains a continuous output of 141 A, a level that keeps medium-to-large motors within their thermal envelope during long duty cycles. The same operating point permits up to 55 kW of shaft power, allowing the axis to deliver steady mechanical work under heavy cutting or forming loads. Mains connection is specified at 3×AC 400 to 480 V ± 10 %, so supply variation must stay within this range. Commands arrive through an analog interface, letting legacy analog velocity or torque cards govern the drive without additional fieldbus hardware. During rated operation, the power electronics shed about 1800 W of heat, a figure used when sizing the enclosure ventilation system.

For short acceleration bursts, the current can rise to 212 A before the internal timers enforce the overload limit. The control electronics are powered by a separate AC 230 V ± 10 % supply, keeping logic independent from the high-energy link. Cooling is handled by a built-in air blower that directs airflow across the heat sink channels, eliminating external liquid or ducted systems. Installation weight is approximately 104 kg, so lifting equipment is appropriate during placement. Additional identifiers include a current rating code of 300, line series 02, design version 1, and function module 01 revision 01. Motor feedback channels accept digital servo or resolver signals, allowing the controller to close velocity and position loops with high resolution.