RAC 2.2-250-380-A0S-W1

The Bosch Rexroth Indramat RAC 2.2-250-380-A0S-W1 from the RAC Spindle Drive Controllers series is a robust AC Main Spindle Drive Controller designed for high-demand machining applications. It operates on a rated connection voltage of 3 x AC 400 V, 50-60Hz and delivers a continuous rated current of 250 A for precise spindle control. Assigned Series 2 and Version 2 firmware, this controller ensures compatibility across legacy and modern CNC platforms. Compact yet powerful, the unit omits an additional encoder input and an additional bleeder, streamlining its internal architecture for enhanced reliability.

Balancing integration and flexibility, the RAC 2.2-250-380-A0S-W1 includes a native serial interface RS 232-C alongside an interface terminal X4, 9 poles for auxiliary I/O. Speed feedback is managed through an analogue (+/- 10 V) speed command, while internal blowers and a built-in fan provide active cooling to sustain optimal temperature under full load. The omission of an additional bleeder simplifies the DC-link rail design, reducing component count and maintenance points. Conceived as a drop-in solution, it supports direct spindle connections and adapts to multiple encoder protocols without extra hardware.

Engineered for industrial-grade endurance, this controller thrives in 24/7 manufacturing settings, offering stable spindle regulation even under fluctuating loads. The combination of internal blower cooling and a streamlined I/O layout minimizes cabinet space and cabling complexity. OEMs and retrofit specialists will appreciate the seamless commissioning, consistent form factor, and proven Bosch Rexroth quality that define the RAC Spindle Drive Series.