Product Description:

The KDA 3.2-100-3-L0S-W1 belongs to the KDA Spindle Drives series from Bosch Rexroth Indramat. Classified as a spindle-oriented drive controller, it converts regulated DC-bus energy into three-phase output for high-speed machine tool spindles and other production axes. Series 3, Version 2 integrates drive, diagnostics, and fieldbus logic in a single housing, allowing it to coordinate speed loops with upstream CNC or PLC equipment through digital command channels and exchange operating data within automated machining systems.

This model draws its power from a regulated 300 VDC supply and can deliver a continuous motor phase current of 100 A. Heat generated by the output stage is removed by a heatsink-mounted blower, and the blower itself runs on an auxiliary source rated at 220 V/50-60 Hz. The unit uses forced cooling, which keeps semiconductor junction temperatures below their design limits during sustained torque production and repeated speed changes. Speed references arrive through the deterministic SERCOS interface, enabling cycle-synchronous updates between the drive and the motion controller for stable spindle response. A second encoder input is not provided, so position feedback is limited to the primary spindle transducer supplied by the machine builder.

Environmental parameters limit cabinet intake air to 5 to 45 °C, and continuous operation is permitted up to 1000 m above sea level without derating. Communication diagnostics and parameter access are supported through a serial interface (RS-232-C), which can connect to service laptops or HMI panels during setup and troubleshooting. The housing follows the Series 3 mechanical layout and uses the same mounting centers as earlier KDA frames, which helps it fit existing machine cabinet arrangements. The unit is intended for spindle duties, so its protective functions are suited to rapid load swings during tool changes and tapping cycles.