Product Description:

The DKR02.1-W300Z-BE84-01-FW is a digital intelligent AC drive controller produced by Bosch Rexroth Indramat for the DKR Drive Controllers series. It converts three-phase line power into regulated motor current so large servo or spindle axes can follow precise velocity and position commands in automated machining centers, transfer lines, and forming equipment. In multi-axis equipment, it serves as the power stage between the supply network and the motor, enabling controlled torque delivery and stable speed regulation under changing loads. The unit is in Line 02, Version 1, with Function Module Version 01, which places it within the established DKR platform for this controller type.

Its primary motion bus uses the SERCOS interface, giving the controller deterministic fiber-optic communication with PLC or CNC hosts. This communication method supports synchronized command exchange and coordinated motion control across linked machine axes. When the pulse-width modulation carrier runs at 4 kHz, the power stage supplies a continuous output of 141 A, which corresponds to approximately 55 kW of mechanical power during sustained operation. Internal logic, gate drivers, and sensors receive an isolated supply of AC 230 V ±10% so low-level circuitry remains stable during line disturbances. Heat generated by IGBT switching and bus losses is expelled through a built-in air blower, allowing operation without external liquid cooling while keeping semiconductor junction temperatures within their intended range.

For rapid acceleration or shock loads, the inverter can momentarily reach a phase current of 212 A before protective limits reduce output. This reserve current supports short-term overload demand during demanding motion profiles. The power bus is rated at 3xAC 400 ... 480 V ±10%, matching common industrial supply ranges for high-power drive systems. During full operation, the controller releases roughly 1800 W of heat, so the enclosure must dissipate a substantial thermal load. The unit weighs 104 kg, which supports rigid panel mounting and usually requires appropriate lifting equipment during installation.