KDA 2.1-100-3-AYD-U1

The KDA 2.1-100-3-AYD-U1 from Bosch Rexroth Indramat is a high-performance spindle drive in the KDA Spindle Drives series designed for demanding industrial automation environments. This unit delivers a rated current of 100 A and operates on a DC bus voltage of 300 V, providing robust power delivery to a wide range of spindle and motor configurations. Forced cooling is provided by a heatsink blower to maintain optimal thermal performance during continuous operation. With a compact footprint of approx. 540 x 170 x 410 mm and a weight of approx. 9.5 kg, it combines high power density with straightforward panel mounting. An integrated control voltage input of 24 V DC ensures compatibility with standard industrial control systems.

The drive’s technical capabilities include support for multiple feedback systems, such as resolver and encoder options, ensuring precise position and speed regulation. Communication is facilitated via an RS232/RS485 interface (option dependent) and an auxiliary SERCOS fiber-optic port for high-speed data exchange. Speed command signals are handled through an analog ±10 V input, while digital command inputs such as OSCILLATE, RUN, and external position (EXT POS) expand its control flexibility. The drive accepts a standard power supply voltage of 3-phase 230/400 V AC at 50/60 Hz, feeding both the power stage and auxiliary circuits. A dedicated auxiliary encoder input with synchronous capabilities further enhances integration with advanced motion systems.

Operational features focus on reliability and safety: the unit’s IP20 protection class rating shields internal electronics against accidental contact and dust ingress. Comprehensive I/O functions include TEMP WARN for overtemperature warnings and IN POS for position achieved signaling. A built-in programming module stores configuration parameters and application software, allowing simple hot-swap replacement. Mounting is done via a versatile panel mounting scheme, simplifying installation in control cabinets. With a rated output current of 100 A and a stable thermal profile, the drive ensures continuous duty cycles without derating.

Integration of the KDA 2.1-100-3-AYD-U1 is seamless within existing machine architectures, thanks to its standardized interfaces and modular design. Its compatibility with common spindle feedback devices and analog/digital command signals makes it ideal for CNC machining centers, grinding machines, and robotic spindle applications. The drive’s compact dimensions and forced cooling design allow tight cabinet layouts while maintaining thermal reliability. Bosch Rexroth Indramat’s comprehensive documentation and support network guarantee rapid commissioning and long-term operational excellence.