HDS03.1-W100N-HS74-02-FW
The HDS03.1-W100N-HS74-02-FW is a drive controller from Bosch Rexroth Indramat within the HDS Drive Controllers series. As a dedicated axis module, it regulates current for connected servo motors and supports coordinated motion in machining centers, assembly systems, packaging equipment, and material-handling lines. In rack-based systems, it works as the power and control stage between the DC bus and the motor, converting motion commands into controlled output for closed-loop operation. The unit occupies a single slot in a multi-axis rack and links with adjacent HDS modules through the backplane, which allows compact axis layouts without separate standalone housings. Because the controller is intended for servo applications, it supports rapid acceleration, controlled deceleration, and accurate position holding when paired with a compatible motor and supply section.
Communication with higher-level motion control is handled through the SERCOS fiber-optic bus, which carries cyclic position values, commands, and parameter data between the controller and the machine control. The module belongs to the DIAX04 platform, so it works with matching supply units and supports modular racks without added interface hardware. During operation, the power stage can supply up to 100 A of continuous output current. This output level suits demanding servo axes and should be considered when selecting conductors, protective devices, and cabinet cooling capacity. The optical network reduces sensitivity to electrical noise that is common around switching power equipment, which helps preserve stable command transfer during high-current operation.
Thermal management is handled by a built-in air blower that moves cabinet air across the heat sink, so no external ducting is required when adequate enclosure airflow is present. This cooling method carries switching losses away from the power section during sustained operation and helps maintain stable temperature in the module. Its internal airflow path supports the compact rack format by removing heat from the module face and power section without adding external cooling attachments. The unit is identified as line 03, which places it within the third design line of the platform. It is marked as version 1, indicating the product revision used for this controller.
