Product Description:

The DKR03.1-W200N-BA04-01-FW is a drive controller produced by Bosch Rexroth Indramat for the DKR Drive Controllers series. As a closed-loop power stage, it links a servo inverter to high-torque Indramat motors and coordinates speed and position in machine tools, printing lines, and similar automated stations. In coordinated automation cells, it acts as the current and motion control stage between the shared supply link and the motor. It converts control commands into regulated motor current so the connected axis can respond accurately during acceleration, steady running, and changing load conditions. The unit is part of Line 03 and uses Version 1 construction.

This controller communicates with a host PLC through an analog interface, so velocity or torque commands are carried on ±10 V signals rather than fieldbus telegrams. That arrangement suits systems that use conventional analog command channels and direct signal wiring. Thermal management is handled by a built-in air blower that pushes cabinet air across the heat sinks to keep semiconductor temperatures within range during continuous operation. The power section is built around a DC bus, and there is no internal brake chopper or bleeder resistor. Excess regenerative energy must therefore be absorbed by other modules on the link or by the mechanical system.

Motor position and speed loops rely on digital servo and resolver feedback, allowing the drive to operate with either multi-turn encoders or analog resolvers. This gives the controller compatibility with common feedback devices used on Indramat servo axes while supporting closed-loop regulation of speed and position. The unit carries Function numeric version 01, which marks the coded function release for this controller type. Its mounting geometry and connector layout are fixed by the first mechanical release. The drive also works within a shared DC supply network used by matching units on the same link.