Product Description:

The Bosch Rexroth Indramat KDA 3.2-100-3-D0S-U1 belongs to the KDA Spindle Drives series and functions as a spindle drive for CNC and other automated machining centers. It converts a fixed DC bus into a controlled three-phase output so the spindle motor can maintain commanded speed and torque during cutting operations. In machine tools, this supports stable surface speed, quick acceleration, and controlled braking during repeated changes in load and direction. The unit is suited for applications where consistent spindle response is needed for precision metal removal and closely regulated process timing.

The drive is energized from a bus link rated at 300 VDC and can continuously supply up to 100 A of armature current to the spindle motor. Thermal management is handled by a mounted heat sink blower, and that blower draws power from a dedicated 115 V/50-60 Hz single-phase source so cooling airflow remains available independently of the main drive load. Command data reach the controller through a front-panel RS-232C serial interface, which supports parameter access and communication with associated control equipment. A primary encoder channel closes the velocity loop, and the lack of a second encoder input keeps the feedback arrangement limited to a single encoder path.

The cabinet’s internal air must remain within 5 to 45 °C, and installation elevation is restricted to 1000 m above sea level to maintain reliable cooling and insulation performance. Internally ducted forced cooling carries waste heat away from the power semiconductors, helping the drive remain stable during sustained spindle demand. High-resolution setpoints arrive through a digital 16-bit parallel command port, allowing the motion controller to issue rapid speed changes with deterministic timing. The product is Series 3 and Version 2, placing it within that generation of the KDA spindle drive line.