RAC 2.2-250-380-A0I-Z1

The RAC 2.2-250-380-A0I-Z1, manufactured by Bosch Rexroth Indramat, is part of the RAC Spindle Drive Controllers series. This AC Main Spindle Drive Controller delivers precise speed control via an analogue Speed Command (+/- 10 V) input and regulates spindles up to 250 A Rated Current. The unit accepts a Rated Connection Voltage of 3 x AC 400 V, 50-60 Hz and can operate servomotors in C-axis configuration with integrated feedback loops. Its robust design and compact footprint make it suitable for high-speed machining and dynamic spindle applications.

Built to streamline installation and maintenance, the drive features an Interface Terminal X4, 9 poles for power and signal connectivity alongside standardized terminal assignments. An Additional Bleeder ensures safe discharge of DC-link capacitors upon shutdown, while the Internal Blower / Built-in fan cooling system maintains optimal operating temperature. The controller provides an Incremental encoder output as an Additional Interface, yet omits extra encoder inputs to simplify wiring harnesses. This Version 2 unit of the Series 2 family supports on-site configuration via AS programming modules and offers local diagnostics through its front-panel keypad.

Integration into existing CNC or automation networks is straightforward thanks to uniform power and feedback cable sets and plug-and-play wiring. The internal blower and ventilation slits ensure reliable thermal management even under peak loads, minimizing downtime. With professional-grade protection for factory environments and global shipment readiness, the RAC 2.2-250-380-A0I-Z1 delivers high-precision spindle control, exceptional reliability, and rapid commissioning for advanced machining centers.