Product Description:

The DKR02.1-W200N-BT71-02-FW is a digital intelligent AC drive controller manufactured by Bosch Rexroth Indramat for the DKR Drive Controllers series. It powers and regulates high-performance servo axes in machining centers, transfer lines, and material-handling systems by combining rectification, inversion, and closed-loop regulation in one enclosure. Through this architecture, the device supplies controlled three-phase energy to Indramat servo motors while exchanging velocity and position data with the machine control, helping reduce cabinet complexity and field wiring inside automated cells.

The power stage accepts a phase-balanced mains feed of 3 x AC 400 to 480 V and converts it at a 4 kHz switching frequency to sustain 120 A of continuous output current. Under these conditions, it can deliver roughly 47 kW of mechanical power to the coupled motor. Logic, relay, and sensing circuits are maintained by a separate AC 230 V control supply, allowing parameter retention and fieldbus activity during main disconnects. Command and diagnostic telegrams move over the fiber-optic SERCOS interface, giving deterministic timing for coordinated axes. These limits set clear electrical boundaries for the drive and its supporting hardware.

Thermal management depends on an internal blower, and this self-contained built-in air blower arrangement avoids external heat exchangers while supporting high cycling rates. During acceleration or shock loads, the inverter can rise to a peak of 141 A before returning to its continuous range. Losses from the IGBTs, control electronics, and fan produce up to 1600 W of heat that must be removed from the enclosure. Even with these capabilities, the assembly weighs only approximately 104 kg and incorporates a rigid DC bus without a brake chopper. It also uses design version 1 hardware in line series 02 and supports motor feedback for digital servo or resolver signals.