Product Description:

The DKR03.1-W100Z-BE43-02-FW is a drive controller manufactured by Bosch Rexroth Indramat for the DKR Drive Controllers series. Classified as a Digital Intelligent AC Drive Controller, it manages power for servo axes in automated machinery and robotic systems while supporting closed-loop velocity and position control. The unit belongs to line 03, uses version 1, and includes function module 43, which places it within a configuration intended for coordinated motion tasks. In operation, it works as the control and power stage between the machine command system and the connected motor, allowing responsive behavior during positioning, speed regulation, and repeated cycle operation. That role makes it suitable for machine sections that require synchronized acceleration, deceleration, and steady-state holding under changing load conditions.

A high-speed SERCOS interface handles motion commands and diagnostic feedback, allowing deterministic communication with the machine PLC. The controller provides a continuous current capability of 71 A at a 4 kHz switching frequency, supporting a continuous drive output of 26 kW without derating. Control electronics are powered from AC 230 V ± 10%, while internal temperature is managed by a built-in air blower that moves heat away from the power section. Motor transducers can be connected through digital servo and resolver feedback, allowing the controller to operate with both high-resolution encoders and legacy resolvers. Diagnostic data on the communication channel also helps the higher-level control monitor drive status and operating conditions without separate analog signaling.

Main power enters the unit at 3×AC 400–480 V ± 10%, and the energy converted to heat during operation is 900 W. This heat is removed by the blower, which allows installation in sealed cabinets when sufficient internal airflow is maintained and proper clearance is provided around the housing. The unit has a total mass of 49 kg, so the panel structure must support a relatively heavy controller during installation and operation. Its weight and thermal output make cabinet layout important when the controller is mounted beside other high-power drive components.