Product Description:

The DKR03.1-W200N-BA35-01-FW is a digital intelligent AC drive controller manufactured by Bosch Rexroth Indramat for the DKR Drive Controllers series. It converts three-phase mains power into regulated drive output for high-power servo or spindle motors in automated machinery, allowing velocity, torque, and position control to be handled by a single cabinet-mounted module. The product communicates through an analog command interface and carries a nominal current rating of 200 A, making it suitable for machine tools and production lines that demand continuous high energy exchange between motor and load.

During steady operation at a 4 kHz switching frequency, the controller can supply a continuous output of 92 A, allowing large-frame motors to run at rated torque without thermally overloading the power stage. Its continuous power capability is 35 kW, which indicates how much mechanical power the connected axis may draw during continuous duty. Short-term load peaks are accommodated by a maximum drive current of 141 A, supporting acceleration or cutting surges that exceed nominal demand. The logic section is energized from a single-phase control input of AC 230 V ± 10%, while the power stage accepts a three-phase line of 3 x AC 400–480 V ± 10%. Separate control and power inputs keep the logic supply distinct from the main power stage.

In this version, the DC link is built as a rigid bus with no bleeder, so regenerative energy must be returned to the mains or absorbed mechanically. Internal airflow from the built-in blower removes up to 1200 W of waste heat, supporting cabinet layouts that rely on forced convection. Position data reach the control loops through digital servo and resolver feedback, allowing precise commutation with compatible motor feedback systems. Despite its 200 A class, the unit weighs 49 kg. The unit is part of line 03 and uses function module version 01.