Product Description:

The KDA 3.2-050-3-AY0-W1 is a spindle drive module produced by Bosch Rexroth Indramat and assigned to the KDA Spindle Drives series. In a machining center or production cell, the unit converts DC bus power into a controlled three-phase output that regulates the rotational speed and torque of a motorized tool spindle. It processes analog command values, monitors motor feedback, and supports the stable spindle behavior needed for milling, drilling, grinding, and other continuous-duty tasks where speed regulation affects surface finish and tool performance. This arrangement also allows the CNC system to manage acceleration, deceleration, and spindle orientation as part of the larger machine sequence.

The intermediate circuit is stabilized at 300 VDC, and the power stage can deliver a continuous armature current of 50 A to the connected spindle motor, providing the electrical capacity required for sustained spindle loading. Thermal energy is removed through a mounted heatsink blower that uses its own 220 V/50–60 Hz supply, and the unit operates with forced cooling so heat can be carried away during long running periods inside an enclosure. Spindle speed is set through an analog reference channel, and a dedicated connector accepts a second encoder input together with a synchronous strobe for orientation functions, phase alignment, and coordination with external positioning devices.

The drive operates in ambient temperatures from 5 to 45 °C and can be installed up to 1000 m above sea level before additional cooling measures are needed. It has no additional interface option, so control wiring uses the standard I/O and feedback terminals already provided on the module. This keeps the electrical connection scheme limited to the built-in control and feedback paths rather than adding optional communication hardware. The product belongs to Series 3 and is manufactured in version 2.