KDA 2.1-150-3-LY0-U1

The Bosch Rexroth Indramat KDA 2.1-150-3-LY0-U1 spindle drive from the KDA Spindle Drives series delivers robust performance for precision industrial automation. This module features a rated current of 150A and operates on 3 × 230/400V AC input voltage, ensuring compatibility with standard three-phase networks. Its forced air cooling maintains optimum thermal conditions during extended operation, preventing overheating under heavy loads. Support for both analog/digital control allows seamless integration with legacy systems and modern PLCs, offering flexible command interfaces. The drive implements resolver or encoder feedback for accurate spindle positioning and velocity regulation.

Technical specifications emphasize reliability and versatility: the protection class IP20 enclosure ensures solid particle ingress protection while enabling airflow, and the drive supports an input frequency of 50/60Hz to match global mains standards. It contains 1 channel for single-spindle control and a DC bus voltage of 300V for stable energy storage. Feedback options include both resolver or encoder inputs, supplemented by an auxiliary encoder interface with synchronous inputs for additional axis monitoring. The module includes firmware version U1, corresponding to the latest control algorithms, and uses a fieldbus interface type LY0 with no integrated bus to simplify installation. Its mechanical footprint measures approximately 390mm × 110mm × 320mm (WxHxD) for efficient rack mounting.

Operational features ensure high dynamic performance: the drive’s speed command value via SERCOS interface provides real-time data exchange and precise velocity commands. Forced air cooling and IP20 design combine to maintain stable temperature and uninterrupted operation in industrial environments. With a rated power matched to the 150A spec, the unit delivers consistent torque output across the rated speed range without derating. The analog/digital control architecture allows rapid response to setpoint changes, minimizing latency in spindle acceleration and deceleration. Resolver or encoder feedback enables closed-loop accuracy, reducing vibration and improving surface finish on high-speed machining tasks.

System integration benefits from the straightforward fieldbus interface (LY0) and compatibility with common PLC and CNC controllers. The absence of an on-board fieldbus simplifies wiring for basic installations, while SERCOS support provides advanced motion synchronization in multi-axis configurations. The compact dimensions and standard mounting format make the KDA 2.1-150-3-LY0-U1 ideal for CNC milling spindles, C-axis turning applications, and direct-drive grinding machines. Its flexible control and robust design suit a wide range of industrial automation tasks where precision and reliability are essential.