Product Description:

The KDA 3.2-100-3-D0I-W1 belongs to the KDA Spindle Drives series produced by Bosch Rexroth Indramat. It is a spindle drive intended for closed-loop control of high-speed machining motors, providing regulated torque and speed to match numerical control commands. Within an automation cabinet, this unit serves as the power stage that links a DC bus to the motor windings while interfacing with the machine controller through a dedicated digital command port. This arrangement allows the controller to regulate spindle acceleration, steady-state speed, and load response during machining operations.

The drive is powered from a DC link at 300 V DC and can deliver a continuous motor phase current of 100 A. That current capacity supports sustained spindle loading in machining applications. An auxiliary AC feed of 220 V/50–60 Hz supplies the blower that maintains semiconductor temperature. The electronics are designed to operate in ambient air between 5 to 45 °C, so cabinet inlet air must stay within that range. Installation is permitted up to 1000 m above sea level without derating. Setpoints arrive through a 16-bit parallel digital command interface, allowing the numerical control to issue fine-resolution speed commands directly to the logic section.

Thermal management relies on a mounted heat sink blower, and airflow is directed across the fin stack by forced cooling so the internal power devices stay within their temperature limits during continuous machining cycles. Feedback can be forwarded to external motion controllers through an incremental encoder output, while a second encoder input is not included. This output can be used by higher-level control hardware for monitoring or coordination with related axes. The blower operates from the stated AC source, and intake filtering should be sized to limit debris buildup on the fins. The unit is Series 3, Version 2, and it uses the corresponding communication profile for KDA multi-axis racks.