DKR04.1-W300N-BT29-02-FW

DKR04.1-W300N-BT29-02-FW is a Bosch Rexroth Indramat digital intelligent AC drive controller in the DKR Drive Controllers series. It belongs to line series 04 and uses design version 1. The current rating is 300. Its SERCOS command interface supports communication with a compatible motion-control system, while digital servo and resolver feedback provide motor position and speed information for closed-loop control.

The controller accepts a rated three-phase power input of 400 to 480 VAC with a tolerance of ±10%. Its control circuitry operates at 230 VAC with a tolerance of ±10%. At a 4 kHz switching frequency, the unit provides approximately 82 kW of continuous drive power and supports 185 A of continuous current. Peak drive current is 212 A for short-duration load demands. The controller has no bleeder or brake chopper and uses a rigid DC bus, so regenerative energy is not dissipated through an internal braking resistor circuit.

Cooling is provided by air from a built-in blower, which removes operating heat from the controller. Total heat dissipation is 2,250 W, indicating the thermal load that the installation must accommodate. The unit weighs approximately 150 kg.