Product Description:

The KDA 3.2-150-3-A0D-W1 is a spindle drive manufactured by Bosch Rexroth Indramat and belongs to the KDA Spindle Drives series. As a dedicated controller for motorized spindles, it converts a regulated DC bus into three-phase output and supervises feedback to maintain precise rotational velocity during machining, drilling, or grinding operations in automated lines. Within a multi-axis system, the unit pairs with Indramat drives and CNC control so that a single DC power supply can feed several axes, simplifying cabinet layout and reducing wiring.

Internally, the power stage is energized from a 300 VDC common bus, and its output components are rated for a continuous 150 A current so that high-inertia spindles can be accelerated without derating. Thermal energy is expelled by a mounted heat sink blower that receives an external supply of 220 V/50-60 Hz; the integral fan forces air across the aluminum fins, keeping semiconductor junction temperatures within limits when axial cuts demand peak torque. This arrangement works with the drive's forced cooling mode, which monitors blower operation and issues a fault if airflow is interrupted. The unit is Series 3 and Version 2, and it is compatible with KDS and TDM modules that share the same DC link. A secondary encoder socket is omitted, so closed-loop operation relies on the primary spindle encoder alone.

The permissible ambient temperature range extends from 5 to 45 °C, allowing installation in most shop-floor enclosures without supplementary climate control. Altitude is limited to 1000 m above sea level, beyond which thinner air reduces the blower's cooling capacity and internal temperature sensors can trigger protective shutdowns. Speed reference data reaches the control electronics as an analog signal, while position trimming can be issued through a dedicated digital position command value interface; separating these channels lets a CNC issue rapid overrides without recalculating the whole vector set.