Product Description:

The DKR03.1-W200N drive controller is produced by Bosch Rexroth Indramat within the DKR Drive Controllers series. It interfaces between a plant’s mains supply and servo motors, converting fixed AC input into a regulated DC bus and high-frequency outputs so machine tools, presses, and handling robots receive precise speed and torque commands. The unit is in Line 03 and Version 1, and it is intended for cabinet installation where centralized motion control and energy recovery are required in automated production cells.

Its logic circuits and fans run from a control supply of 230 VAC, drawing 200 VA to keep the internal electronics isolated from the main power bus. When the PWM carrier is set to 4 kHz, the inverter can deliver a continuous output of 92 A. Raising the carrier to 8 kHz lowers the sustainable current to 78 A because switching losses rise. Short acceleration bursts are handled with a peak output of 141 A, letting the controller start heavy axes without oversizing the motor. The output stage can modulate up to 800 Hz, allowing high-speed spindles or linear motors to run smoothly while still receiving sinusoidal current shaped by the blower-cooled IGBT bridge.

Regenerated energy is routed to the integrated auxiliary brake resistor, which can dissipate 1 kW continuously and tolerate surges of 40 kW during rapid deceleration sequences. An external resistor bank may be added when the application exceeds the 150 kWs absorption limit. Thermal loading on the cabinet must consider a total controller loss of 1200 W, of which 800 W exits through the internal air channel, so unrestricted airflow around the top and bottom vents is required. The enclosure has an IP20 rating, so it is intended for protected indoor areas below 55 °C and 1000 m elevation where conductive dust and dripping liquids are absent.