Product Description:

The KDA 3.2-050-3-A0S-W1 is a spindle drive engineered by Bosch Rexroth Indramat for the KDA Spindle Drives series. It converts DC bus power into controlled three-phase output so that a machine-tool spindle can accelerate, decelerate, and hold speed under changing load. Code 3 identifies the design generation, and 2 indicates the series version, aligning the drive with matching power supplies and feedback modules in multi-axis machining centers. By combining power electronics with a mounted heat sink blower, the unit supports continuous duty cycles required in automated cutting and finishing operations.

The drive delivers a rated output of 50 A, giving CNC systems enough phase current to maintain cutting torque at full speed. Its internal power stage is energized from a 300 VDC bus that is typically supplied by an Indramat TDM or KDV supply module. The heat sink blower is powered from an auxiliary line of 220 V, 50/60 Hz, and airflow is provided by forced cooling to remove switching losses from the IGBT stack. A RS-232C serial interface allows parameter loading and diagnostic readout without disturbing the fieldbus link. The blower assembly is factory-mounted on the heat sink, so separate ducting is not required when the drive is installed beside other KDA modules.

For plant integration, the unit operates in ambient temperatures from 5 to 45 degrees Celsius and can be installed at elevations up to 1000 m above sea level without derating. Speed reference signals enter as an analog voltage, which simplifies retrofits where digital motion buses are unavailable. The control card does not have an additional input for a second encoder, so spindle position feedback must come through the primary resolver or incremental encoder supported by the series. Wake Industrial offers a one-year warranty on this product and can ship internationally.