Product Description:

The DKR03.1-W100N-BA04-01-FW is an AC drive controller built by Bosch Rexroth Indramat for the DKR Drive Controllers series. As a digital intelligent AC drive controller, it supplies, regulates, and monitors three-phase motors in automated production lines. The unit belongs to Line 03, uses design version 1, and includes function module version 01 for compatibility with the wider motion control platform. By converting plant-level power into controlled output, it supports speed, torque, and positioning tasks in gantries, machine tools, and material-handling axes.

Incoming power is accepted at 3x AC 400–480 V ±10%, allowing connection to common factory mains. At a switching frequency of 4 kHz, the controller delivers a continuous output of 71 A, which corresponds to roughly 26 kW of mechanical power for the connected motor system. Thermal energy created by the IGBT stage is removed by a built-in air blower, which helps keep internal components within their operating limits without external ducting. The control circuits use a separate AC 230 V supply so logic operation remains stable during mains fluctuations. The unit is assigned to current rating class 100 for cabinet selection, and it does not include an integrated brake chopper.

Motion commands reach the unit through an analog interface, while high-resolution position data is returned through digital servo and resolver feedback channels for closed-loop drive control. During acceleration and load changes, the inverter maintains controlled current delivery so the drive can respond smoothly to changing operating demands. Overall losses amount to 900 W, which should be considered when planning enclosure ventilation. The controller weighs 49 kg, so the mounting rails or support shelf must be rated for that load. Because there is no integral bleeder and the DC link is rigid, regenerative energy must be routed to an external resistor or a shared bus.