HDS03.1-W075N-HS78-00-FW
The HDS03.1-W075N-HS78-00-FW drive controller is built by Bosch Rexroth Indramat as part of the HDS Drive Controllers series. It functions as the closed-loop regulator for servo and induction motors connected to a DIAX04 automation rack, translating high-level motion commands into precise phase currents. In industrial automation lines, the unit coordinates axes for machining centers, packaging stations, and gantry handlers, supplying the torque and speed control necessary for repeatable production. Because regulation is performed inside the controller, command values from the machine control are converted into motor current with the timing needed for stable motion on coordinated axes.
Its communication backbone is the SERCOS interface, which provides deterministic telegrams and synchronous cyclic setpoints to every drive on the ring. The device belongs to line 03, which corresponds to the third mechanical format in the DIAX topology and uses that mounting footprint. A continuous output of 75 A is available to the attached motor windings, so the internal power stage can supply that current without derating under rated conditions. To remove switching heat, a built-in air blower moves cabinet air across the heat sink. The controller is part of the DIAX04 family, so its parameter structure and encoder sockets remain common across the platform. Deterministic communication also helps neighboring axes stay synchronized during interpolated motion and coordinated speed changes.
The controller is electrically compatible with HMS supply modules and HZF brake choppers used in the same cabinet system. It is classified as an HDS Drive Controller and is Version 1. Front-panel status LEDs indicate ring synchronization, current utilization, and blower operation, so operating status can be checked directly at the unit. The separate supply and braking modules handle shared cabinet functions, while the controller focuses on motor regulation and operating feedback.
