Product Description:

The KDA 3.2-150-3-D00-W1/220 is a spindle drive produced by Bosch Rexroth Indramat and assigned to the KDA Spindle Drives series. As a Series 3, Version 2 model, it serves as the power stage between a machine DC bus and high-speed spindle motors, converting digital speed commands into regulated three-phase output. In machine tools, the unit manages acceleration, deceleration, and stable running speed so the control system can maintain consistent spindle behavior during cutting, drilling, or grinding. Closed-loop operation helps the spindle respond accurately to commanded speed changes during varying load conditions.

Its power channel delivers a continuous output of 150 A, allowing the drive to supply sustained current under rated thermal conditions. The unit draws energy from a shared DC link at 300 VDC, which supports common-bus drive arrangements and helps absorb regenerated energy during braking events. An integral blower uses a separate AC supply of 220 V 50–60 Hz, so cooling remains available even when the main power stage is disabled. The cooling hardware includes a mounted heat sink blower, and the drive uses forced cooling to move air across internal power components during heavy spindle duty. This airflow supports stable temperature control in applications that involve repeated speed changes and continuous machining cycles.

The operating range allows ambient temperatures from 5 to 45 °C, so the installation area must stay within that window during normal use. The unit is intended for installation up to 1000 m above sea level, where standard air density still supports effective heat removal. Command data enters through a digital 16-bit parallel interface, which gives the controller a direct and stable way to send speed reference values without analog drift. The configuration includes no additional interface option, and a second encoder input is not included. Wiring is therefore limited to the main encoder channel, the DC link connections, the motor output, and the blower supply.