Product Description:

The DKR03.1-W200N-BA11-01-FW is a digital intelligent AC drive controller built by Bosch Rexroth Indramat and belongs to the DKR Drive Controllers series. As an intermediate power stage, it links the supply network to synchronous or induction motors used on gantry axes, milling heads, and other high-demand motion tasks. The unit processes setpoints and returns feedback in real time so that industrial automation systems can maintain velocity, torque, and positional accuracy under variable mechanical loads.

Its electrical capability includes a continuous output of 92 A at a 4 kHz switching frequency, allowing stable motor torque during steady operation. That current corresponds to roughly 35 kW of continuous shaft power when the connected machine is at rated speed. Control electronics are energized by AC 230 V (±10%), isolating low-level logic from the high-power mains. The power section is rated for 200 A and is cooled by a built-in air blower, so installation requires cabinet airflow rather than external chillers. A rigid DC bus is provided without a brake chopper, making regeneration possible through the supply line or an external resistor. Command data enter over an analog interface, while digital servo or resolver feedback closes the loop with the motor. The unit is design version 1 with function module version 01 and belongs to line series 03.

During dynamic transients, the controller can deliver 141 A of peak current, giving extra torque for acceleration or rapid deceleration events. It accepts a three-phase supply of 3×AC 400–480 V (±10%), a range compatible with standard factory distribution grids. Internal switching and magnetics convert that input into regulated waveforms, and the associated switching losses are dissipated as 1200 W of heat, so the enclosure needs adequate venting around the exhaust ports. The housing weighs 49 kg, which affects mounting requirements and handling while also adding thermal mass that helps limit rapid temperature swings.