Product Description:

The DKR03.1-W200N-BE37-00 is a digital intelligent AC drive controller built by Bosch Rexroth Indramat and assigned to the DKR Drive Controllers series. Inside multi-axis machining centers and material-handling cells, the unit converts three-phase line power into precisely modulated output that governs torque, speed, and position of large servo motors, supporting coordinated motion in demanding industrial automation tasks. Motion commands arrive through a SERCOS interface, and closed-loop regulation is achieved through digital servo or resolver feedback channels.

Its continuous output current reaches 92 A at a 4 kHz switching frequency, allowing connected axes to draw steady power while producing about 35 kW of mechanical work. The control electronics are supported by an auxiliary supply of AC 230 V ±10%, so fieldbus communication and diagnostics remain active during mains interruptions. Thermal management relies on a built-in air blower that pushes ambient air through the heat sink, eliminating external ducting. A class designation of 200 indicates the drive’s current rating and helps determine suitable upstream protection devices.

The power stage accepts a mains window of 3 x AC 400–480 V ±10% and can deliver up to 141 A during acceleration peaks. Because the DC bus is rigid and no brake chopper is fitted, regenerative energy must be returned to the supply or absorbed by external hardware. Under full electrical load, the controller dissipates 1200 W of heat, which must be considered for enclosure ventilation. Total mass is 49 kg, making the unit suitable for cabinet installation with standard handling methods. Additional identifiers such as line series 03, design version 1, and function module 00 are included with the product, and the bleeder-free topology reduces internal component count.