KDA 3.2-150-3-AYS-W1

The Bosch Rexroth Indramat KDA 3.2-150-3-AYS-W1 from the KDA Spindle Drives series delivers precision spindle control with a rated current of 150 A and a DC bus voltage of 300 V. It employs forced cooling by heatsink blower powered by a 220 VAC AC supply for the heatsink blower, ensuring optimal thermal management during continuous operation. The drive integrates a three-phase power transmitter and a KDV modular power supply to stabilize voltage delivery to the spindle. Its design 2 format streamlines panel mounting and service access, while the asynchronous drive module supports high torque density within a compact footprint.

Command signals are accepted via differential analogue input (±10 V) or a 16-bit parallel digital interface, offering versatile speed command input options for diverse machining tasks. The RS-232C serial interface serves as an auxiliary channel for configuration, monitoring, and firmware updates. Closed-loop velocity feedback is achieved through an auxiliary & synchronous (AS35) encoder input type, which feeds real-time shaft position data to the CDM computer drive module. Identified by product code KDA, series 3, and design 2, the CDM keeps track of rotor angle and slip position, applying advanced compensation algorithms to maintain high dynamic performance.

The drive’s control principle leverages field-oriented vector control to deliver exceptional stability and high stiffness across the entire speed range, including precise regulation down to zero RPM. Designed for seamless integration with modular AC servo controllers, it shares a centralized power supply and simplifies multi-axis coordination. This robust spindle drive is well suited for high-precision machining centers, tool grinders, and applications demanding tight speed regulation and reliable thermal performance.