DKR02.1-W300N-B

DKR02.1-W300N-B is a Bosch Rexroth Indramat unit in the DKR Drive Controllers series. It belongs to line series 02 and uses design version 1. The controller has a current rating of 300. At a 4 kHz switching frequency, it supplies 141 A of continuous current and approximately 55 kW of continuous drive power. Its peak drive current is 212 A for short-duration high-load operation.

The rated power input is three-phase AC at 400–480 V with a tolerance of ±10%, while the control circuitry operates from 230 V AC with a tolerance of ±10%. Digital servo and resolver feedback provide motor position and speed information to the controller. A built-in blower supplies air cooling to remove operating heat, and the unit has a total heat dissipation of 1,800 W. It uses a rigid DC bus without a bleeder or brake chopper, so no internal brake-chopper circuit is provided for dissipating regenerative energy. The controller weighs approximately 104 kg.