HDS03.1-W100N-HS78-00-FW
The HDS03.1-W100N-HS78-00-FW is a drive controller produced by Bosch Rexroth Indramat and assigned to the HDS Drive Controllers series. In multi-axis industrial machinery, the unit supplies regulated DC bus power and switching functions so servo drives in the same rack can control motor torque, speed, and position. It performs current regulation, DC bus monitoring, and fault handling for one motor axis when paired with suitable feedback hardware. This role allows coordinated motion in automated equipment where several axes must operate from a common cabinet platform.
This controller exchanges real-time commands over the SERCOS fiber-optic interface, which removes noise-sensitive analog wiring and allows deterministic communication between the motion PLC and each axis. It belongs to the DIAX04 controller family, so it follows a modular rack format that can share a supply module with other drives in the same family. Thermal management is handled by a built-in air blower; the fan pulls cabinet air through the heat sink so the unit can reach its full rating without additional ducting. The device can deliver up to 100 A of continuous output current, enabling it to operate medium-power servo motors that require high peak torque during acceleration.
The product is part of Line 03, which matches the mechanical layout, connector style, and mounting slots used across third-generation HDS modules. The unit is Version 1, so parameter files must match that release. Functionally, it is classified as an HDS Drive Controller, meaning it serves as the control and power stage for a single motor axis within a shared rack system. The shared rack arrangement allows multiple controllers to use the same supply section, communication loop, and emergency-stop circuitry without custom wiring between each neighboring module.
