Product Description:

The DKR02.1-W300N-BA01-01-FW is a digital intelligent AC drive controller manufactured by Bosch Rexroth Indramat for the DKR Drive Controllers series. As a high-power motion component, it supplies regulated three-phase energy to large servo and spindle motors in automated machining centers, material-handling axes, and test stands where closed-loop precision and rapid torque availability are required. The controller regulates motor voltage and current so the connected axis can maintain commanded speed and torque under changing load conditions.

The drive exchanges setpoints and feedback through an analog interface, allowing straightforward signal coupling with PLC analog outputs. The power section accepts a supply of 3xAC 400 ... 480 V, ±10%, matching common plant mains without autotransformers. At a 4 kHz switching frequency, the inverter sustains 141 A of continuous output current, which corresponds to a steady mechanical output of 55 kW. The power stage is rated at 300 A for allowable RMS conduction through the IGBT section, which helps size cables and protective devices. The product is in Line 02 and uses function module code 01 with version 01 for this power class.

During rapid acceleration or load disturbances, the controller can supply a peak of 212 A for short intervals. Thermal energy is removed by a built-in air blower, and this forced-convection method works with a rigid DC bus that lacks a brake chopper, so regenerated energy is routed upstream instead of being dissipated locally. Under rated conditions, the unit releases 1800 W of heat, which must be considered in cabinet airflow planning. Mechanical installation must account for its 104 kg mass. A separate control circuit operates on 230 V AC ±10%, keeping the logic active during power-stage isolation. The design version is 1, and integrated digital servo and resolver feedback processing provides velocity and position closure without external converters.