Product Description:

The KDA 3.2-100-3-LQS-W1 belongs to the KDA Spindle Drives series manufactured by Bosch Rexroth Indramat. It is a spindle drive module that receives a regulated DC bus and modulates three-phase output for high-speed motor spindles used in metal-cutting, grinding, or woodworking centers. Within an automation rack, it serves as the actuator stage that interprets velocity commands and supplies the controlled power needed to hold cutting speed under dynamic load. This type of drive is intended for applications where spindle speed must remain stable as cutting forces change during machining.

The power section can deliver up to 100 A, enabling large spindle motors to reach full torque during rapid acceleration. Its intermediate circuit operates at 300 VDC, so matching drives in a common DC link can share regenerated energy. A dedicated heat sink blower is connected to a single-phase 220 V AC 50–60 Hz source, and this airflow supports the drive’s forced cooling design while the cabinet remains closed. Reliable operation is specified for ambient conditions from 5 to 45 °C, and additional conditioning may be required outside this range. Installation is allowed up to 1000 m above sea level because reduced air density above that elevation can limit heat removal. This operating range supports spindle duty with repeated speed changes and sustained cutting loads.

Speed commands reach the control card through the SERCOS interface, giving deterministic cycle times for coordinated spindle and axis movement. For service tasks, a secondary RS-232-C port permits parameter uploads or fault tracing from a computer without disturbing the real-time network. The drive is Series 3, edition 2, which matches the component layout used with contemporary Indramat CNC platforms. Separating the real-time network connection from the local serial port helps keep routine diagnostics off the motion channel.