Product Description:

The DKR02.1-W300N-BA04-01-FW is a digital intelligent AC drive controller produced by Bosch Rexroth Indramat for the DKR Drive Controllers series. It commands high-power servo or spindle motors in automated machining centers, material-handling cells, and other multi-axis equipment. In these systems, the unit converts fixed three-phase mains energy into regulated output and coordinates speed, position, and torque through its control electronics and external bus links. This particular unit belongs to Line 02, carries design version 1, and uses function module version 01 for standard motion tasks.

At a 4 kHz switching frequency, the drive supplies a continuous phase current of 141 A, supporting large gantries without thermal derating. That margin yields about 55 kW of mechanical power with suitable motors. The control electronics run from a separate AC 230 V auxiliary supply that stays active when the main link is isolated. Thermal management relies on a built-in air blower that forces airflow across the heat sink fins. For the power stage, a mains window of 3xAC 400–480 V ±10% fits typical plant grids, and the internal current rating of 300 aligns with Bosch Rexroth sizing rules. Because the unit omits a brake chopper, regenerated energy must be routed to an external resistor or returned to the network through the DC bus.

During acceleration peaks, the inverter delivers up to 212 A of phase current, giving machinery the headroom to overcome friction and load inertia without sacrificing settling time. Operating at these limits releases 1800 W of heat, a value used to size enclosure cooling. The housing itself weighs 104 kg, so the mounting structure must support substantial static load. Motion setpoints arrive through an analog interface, and the feedback channel accepts both digital servo signals and resolver signals, allowing mixed-technology axis groups to run under one controller platform.