Product Description:

The DKR03.1-W200N-BA08-01-FW is produced by Bosch Rexroth Indramat as part of the DKR Drive Controllers series. It is classified as a digital intelligent AC drive controller and is intended to supply and regulate high-power servo axes in automated machinery lines. By combining power conversion, motor feedback processing, and protective logic in one frame, the unit serves as the central interface between the plant's electrical mains and the driven motion system. It is suited to applications that require regulated current and closed-loop control on large servo axes.

During continuous operation at a 4 kHz switching frequency, the drive can deliver 92 A of armature current, corresponding to a continuous mechanical output of about 35 kW. All control electronics are fed from a single-phase auxiliary supply of AC 230 V ±10%, while internal thermal management relies on a forced-convection path that uses a built-in air blower. For short acceleration bursts, the current can rise to 141 A, allowing rapid torque transients without triggering current-limit faults. The controller accepts digital servo and resolver feedback signals so it can close position and velocity loops for either sensor type. Because the bleeder stage is omitted, regenerated energy remains on the DC bus instead of being dissipated internally.

Main power is supplied from a three-phase network at 3 x AC 400 ... 480 V ±10%. Under nominal loading, the electronics and blower produce a thermal loss of 1200 W that must be vented from the cabinet. The housing mass is 49 kg, which affects panel support and lifting requirements during installation. Command signals reach the unit through an analog interface. Identification codes such as line series 03, design version 1, and function module version 01 distinguish this configuration within the product line.