Product Description:

The DKR04.1-W400N-BA05-01-FW belongs to the DKR Drive Controllers series from Bosch Rexroth Indramat. As a digital intelligent AC drive controller, it supplies and regulates large synchronous or induction motors in automated machining centers, presses, and handling cells. The unit integrates into multi-axis systems to issue torque, speed, and position commands while monitoring motor feedback through both digital servo and resolver channels. This allows the controller to support closed-loop motion on high-power axes that must remain stable during changing loads and coordinated machine movements. By linking high-capacity mains supplies to motion tasks, it serves as the central power and control interface between the plant PLC and the attached servo machinery.

The power section accepts 3x AC 400 to 480 V, ± 10 %, permitting installation on three-phase supplies. At a 4 kHz PWM frequency, the drive can deliver a continuous current of 210 A, which corresponds to approximately 93 kW of mechanical power during sustained duty. Short bursts are handled with a peak capability of 282 A, allowing the connected axis to accelerate high-inertia loads. Total internal losses are dissipated as 2500 W of heat, which should be considered when planning cabinet ventilation. The power stage uses current class 400 and operates on a rigid DC bus without a brake chopper. The drive is design version 1 and uses function module version 01 within Line 04.

Control and peripheral services are supplied through an analog interface, so ±10 V speed or torque commands can be accepted directly from legacy motion controllers. This arrangement supports integration with older control architectures that still use analog command sources. Auxiliary electronics are powered by AC 230 V, ± 10 %, isolating logic functions from the high-energy mains, and thermal management relies on a built-in air blower. Installation weight reaches 150 kg, so the unit is intended for fixed mounting in floor-standing enclosures. Because the drive does not include a bleeder, regenerative energy must be returned to the supply or absorbed mechanically.