Product Description:

The DKR02.1-W200N-BE56-01-FW is a digital intelligent AC drive controller manufactured by Bosch Rexroth Indramat for the DKR Drive Controllers series. It supplies regulated DC bus energy and closed-loop inverter output to large-frame servo and spindle motors used in automated machine tools, material-handling gantries, and similar equipment. By combining power processing, control logic, and drive protection in one housing, the unit simplifies cabinet design while supporting high-power motion requirements in production equipment.

The drive accepts a mains supply of 3 x AC 400–480 V and uses a separate control section that must receive AC 230 V within a ±10% window for logic, interface, and fan circuits. During continuous operation at a 4 kHz switching frequency, it can deliver 120 A to the motor terminals, translating to about 47 kW of mechanical output when matched with a compatible Indramat motor. For short acceleration bursts, the current can rise to 141 A, giving the machine additional capacity for rapid positioning or spindle ramp-up. A current rating of 200 A sets the sizing class of the internal conductors, fuses, and IGBT modules. The unit uses a rigid DC bus and has no brake chopper, so excess kinetic energy must be dissipated in external hardware when regenerative loads are present.

Total controller losses reach 1600 W and are removed by a built-in blower that forces air through heat sink channels; the cooling method is therefore a built-in air blower. Real-time motion commands and diagnostics are exchanged over the SERCOS interface, while motor position data can be processed from digital servo or resolver feedback devices. With a mass of 104 kg, the housing requires reinforced cabinet mounting rails. The module is part of line series 02, design version 1, and function module version 01, and its rigid DC bus contains no bleeder resistor.