Product Description:

The DKR03.1-W200N-BE39-01-FW is an AC drive controller manufactured by Bosch Rexroth Indramat for the DKR Drive Controllers series. Classified as a digital intelligent drive, it governs servo axes in automated cells by converting line power into regulated motor current while exchanging motion commands with higher-level PLCs. The unit is built on a rigid DC bus topology that omits a brake chopper, so regenerative energy must be handled by external components rather than dissipated internally.

During continuous operation at a 4 kHz switching frequency, the drive supplies up to 92 A to the motor, a capacity that supports high-torque positioning tasks. Its power electronics can deliver roughly 35 kW of mechanical output before thermal derating is required. Control electronics are powered from an auxiliary line of AC 230 V (±10%), ensuring stable logic voltage independent of main supply fluctuations. Temperature rise inside the housing is managed by a built-in air blower that directs airflow across the heat sink and exhausts it at the panel surface. For transient acceleration or shock loads, the current limit rises to 141 A, giving machinery short bursts of additional torque without breaching semiconductor ratings.

The controller accepts a mains input window of 3×AC 400–480 V, allowing direct connection to standard factory feeders without a step-down transformer. Thermal losses reach 1200 W, which is important for cabinet ventilation planning and temperature control. Command and diagnostic traffic use the real-time SERCOS interface, while motor encoder signals are accepted as digital servo and resolver feedback for precise loop closure. At 49 kg, the unit requires panel mounting with adequate support, and its 200 A rating should be matched with suitable protective fuse or circuit breaker selection. It is assigned to line series 03, design version 1, and function module version 01.