HDS04.1-W200N-HS28-01-FW
The HDS04.1-W200N-HS28-01-FW is a modular digital drive controller built by Bosch Rexroth Indramat and assigned to the HDS Drive Controllers series. In multi-axis machine tools and material-handling stations, the device acts as the power stage that converts DC-bus energy into regulated three-phase output for servo or spindle motors. By processing motion commands from a central controller over a fiber-optic network, it closes the torque loop in real time and supports coordinated axis control across distributed automation systems. The controller serves as the electrical link between the shared DC bus and the motor phases, so speed and torque changes can be applied with fast current regulation.
Communication is handled through SERCOS, allowing deterministic command cycles, synchronized command execution, and consistent status exchange with the higher-level controller. The power section is designed for a continuous output of 200 A, so matching motors can operate without external boost modules. Thermal stability is maintained by a built-in air blower, which moves cabinet air across the heat sink instead of relying on external ducting. The unit is part of the DIAX04 family and carries Line 04, indicating shared mechanical dimensions and terminal layout with companion axes in the same platform. This arrangement supports uniform module placement in racks that contain several coordinated drives.
The controller is Version 1. It shares its footprint and backplane connectors with other units in the line, so mixed-size racks can be assembled without drilling new mounting holes. A single fiber link can connect multiple HDS controllers in one rack, while the common DC bus lets several axes operate from the same power structure. The consistent enclosure format helps maintain orderly spacing in control cabinets and allows servo and spindle sections to be arranged within the same drive assembly.
