Product Description:

The HDS03.2-W075N-HT81-01-FW is a multi-axis drive controller built by Bosch Rexroth Indramat in the HDS Drive Controllers series. It accepts position references from a higher-level PLC and sends current commands to the power section so that synchronous and asynchronous servo motors follow preprogrammed motion paths. Acting as the supervisory element in a multi-axis system, it links the control network to the power hardware and supports repeatable motion in automated machinery. That architecture lets one controller coordinate axis behavior while the power modules handle motor energy conversion. It is suited to coordinated motion tasks where several axes must respond to shared timing, reference values, and command data.

Communication takes place over SERCOS fiber optics, providing deterministic cyclic data exchange between the controller and the connected drives. The unit belongs to the DIAX04 family and is part of Line 03, which identifies its design line within that platform. Cooling is handled by a built-in air blower that moves air across the heat sink. Because the airflow is generated inside the unit, no separate external duct is required for the controller’s cooling path. The controller can request up to 75 A from the companion power section, setting the upper continuous current available to a connected axis.

The module is Version 2, which indicates a later revision of this controller type. It uses controller-only electronics, so the power transistors and regenerative hardware remain in separate HMS or HVE units. This separation helps reduce the effect of high-current switching noise on the control section during operation. In this layout, the control section focuses on communication, coordination, and current command handling while the external power hardware performs the switching work. The modular arrangement also supports multi-axis systems in which control and power functions are divided across dedicated units.