Product Description:

The DKR03.1-W200Z-BE43-02-FW is a drive controller built by Bosch Rexroth Indramat for the DKR Drive Controllers series. As a digital intelligent AC drive controller, it supplies regulated three-phase power to high-torque servo or main spindle motors in automated machine tools and production lines. It supports coordinated speed and torque control from CNC or PLC commands, making it suitable for closed-loop motion tasks that require stable motor response during continuous operation.

The unit exchanges commands and diagnostics over the SERCOS interface, allowing synchronous motion control with adjacent axis modules. At a switching frequency of 4 kHz, it sustains 92 A of output current and supplies about 35 kW of continuous power, which supports stable operation of mid-range spindles under constant load. Internal logic and I/O are energized by a control supply of AC 230 V ±10%. The power stage is cooled by a built-in air blower that directs airflow across the heat sink to keep semiconductor temperatures within limits. Motor feedback is processed through digital servo and resolver signals, allowing precise position evaluation and helping reduce overshoot and drift during process cycles.

During acceleration intervals, the drive can deliver a peak phase current of 141 A, which supports short-term torque demand during rapid speed changes. The main power input of 3xAC 400 ... 480 V ±10% corresponds to an internal current rating of 200 A for the converter section. The unit is built to dissipate 1200 W of heat, and the blower with the heat sink supports continuous-duty operation in appropriate cabinet airflow conditions. Hardware layout follows design version 1, line series 03, and function module 43 for application-specific control logic. With a mass of 49 kg, the unit requires secure cabinet support and adequate space for ventilation.