Product Description:

The DKR03.1-W200N-BE31-01-FW is an AC drive controller manufactured by Bosch Rexroth Indramat for the DKR Drive Controllers series. The unit mounts inside electrical cabinets and works with high-power servo or spindle motors to deliver regulated DC-bus energy, closed-loop velocity and position control, and coordinated motion commands in production machinery. By serving as the interface between the plant control system and the motor windings, it supports milling centers, presses, and transfer lines that require accurate torque modulation and fast dynamic response. Its role as the power and control stage lets the machine coordinate current delivery with commanded speed and position changes during demanding cycles.

It exchanges setpoints and diagnostics over the SERCOS interface, allowing fiber-optic communication with PLCs and other drives. Thermal management is handled by a built-in air blower, so the inverter runs without external heat sinks while cabinet airflow remains stable. The DC link is configured without a bleeder, and the rigid DC bus helps keep the intermediate-circuit voltage steady during load changes. For position feedback, the controller processes digital servo and resolver feedback, enabling mixed encoder topologies on multi-axis machines. The unit is design version 1.

In the internal coding of the family, the controller is part of line 03 and carries function numeric version 01. These codes identify the product variant used within the series and separate it from other members of the same platform. The drive supports synchronous and induction motor operation, and deceleration energy must be handled through regeneration or separate external hardware because the DC link is configured without a bleeder. It is intended for cabinet-based motion systems that use shared bus architecture and coordinated axis control.