Product Description:

The DKR04.1-W400E-BE12-01-FW is a drive controller in the DKR Drive Controllers series manufactured by Bosch Rexroth Indramat. In automated production cells, it regulates torque, speed, and position for large servo motors. This keeps axis motion coordinated with higher-level PLCs and CNCs in transfer lines and machining stations. By adjusting motor output in real time, the unit supports synchronized movement where several axes must respond accurately to changing command values. Stable regulation also helps maintain repeatable motion on large-format equipment that cannot tolerate drift between commanded and actual position.

Dynamic braking energy is routed through an external bleeder with a brake chopper and a rigid DC bus, so overvoltage transients are dissipated outside the cabinet and the internal power stage remains within safe limits. Command data enter the unit over the SERCOS interface, which carries setpoints and feedback on a single fiber-optic ring and reduces separate signal wiring. Thermal management is handled by air cooling by a built-in blower, so external ductwork is not required in most cabinets and airflow can be directed across the internal heat sink. For position verification, the controller accepts digital servo and resolver feedback, allowing it to operate motors equipped with either encoder technology, and it is part of Line 04 of the platform. This places the controller within the same general mechanical format used by related units in that line.

The controller is Design Version 1, which indicates the first design revision. It uses Function numeric version 01, which keeps its control logic aligned with compatible motion commands in the platform. The unit uses standardized diagnostic LEDs for status and fault indication during operation. These indicators provide a direct visual reference for operating state, communication condition, and active fault response without adding separate display hardware. Consistent version coding also helps keep command handling aligned across multi-axis systems that use matching control modules.