Product Description:

The KDA 3.2-150-3-L00-W1 is a spindle drive manufactured by Bosch Rexroth Indramat as part of the KDA Spindle Drives series. Designed for high-speed machining centers and turning systems, the unit converts the fixed DC bus of an Indramat supply module into controlled three-phase output for synchronous or induction spindle motors. By integrating acceleration, braking, and speed control functions, the device supports closed-loop spindle control in numerically controlled machine tools and other automated production equipment.

The drive draws its internal power from a DC link of 300 VDC, so an upstream supply module must maintain that constant bus level for stable torque production. At rated load, it can deliver up to 150 A of continuous output current, allowing direct connection of large-frame spindles without an external booster. Thermal management is handled by a mounted blower that takes a dedicated 220 V 50–60 Hz single-phase feed. The unit uses forced cooling, so the fan actively pushes air through the fin channels rather than relying on natural convection. The electronics are specified to operate within an ambient temperature range of 5 to 45 °C, so enclosure conditioning must keep inlet air within that window.

Mechanical installation is permitted up to 1000 m above sea level, where reduced air density still supports the blower's heat removal. Command velocities are received over the SERCOS interface, enabling direct synchronization with motion controllers without analog scaling errors. Because no additional interface option is provided, wiring remains straightforward while reserving bandwidth for other axes on the SERCOS ring. The cooling hardware consists of a single mounted heat sink blower. Second encoder inputs are omitted, which confines speed feedback to the primary spindle transducer.