RAC2.3-250-460-L00

The Bosch Rexroth Indramat RAC2.3-250-460-L00 drive controller is a precision-engineered solution in the RAC Spindle Drive Controllers series, designed for accurate main spindle control in advanced industrial automation. This AC main spindle drive controller delivers high-performance motion control and adaptability, supporting both factory-new installations and retrofit upgrades. With a robust continuous controller output of 43 kW and a peak controller output of 55 kW, the RAC2.3-250-460-L00 achieves exceptional spindle acceleration and torque stability. The integration of an integrated fan cooling method ensures consistent thermal management, while the device’s modular design simplifies maintenance and serviceability. Its solid construction and precise regulation capability make it an ideal choice for demanding CNC machining applications.

The RAC2.3-250-460-L00 is specified as an AC Main Spindle Drive Controller with no additional encoder input required, streamlining system configuration. It operates from a rated connection voltage of 3×AC 400V 50-60Hz; 3×AC 460V 60Hz, supporting international power standards. Speed control is provided via multiple speed set-point interfaces—analogue, digital, and SERCOS—for real-time communication and high-resolution feedback. Its humidity tolerance per DIN 040 rating and operating temperature range of 5 to 45°C ensure reliability in standard shop-floor environments. Weighing 112 kg, the unit offers a compact footprint relative to its power rating, facilitating integration into existing drive racks.

Operational performance is enhanced by the controller’s ability to function at installation altitudes of up to 1000 m ASL without derating, supporting installations in varied facility layouts. The integrated fan cooling method maintains optimal internal temperatures even under continuous heavy load, preserving component life. With a continuous controller output of 43 kW and peak output of 55 kW, the controller adapts seamlessly to rapid load changes during heavy-duty milling, drilling, or grinding cycles. The absence of additional encoder inputs reduces wiring complexity and potential configuration errors, while humidity tolerance and robust enclosure design protect sensitive electronics. The RAC2.3-250-460-L00’s consistent torque delivery and rapid dynamic response facilitate precision spindle control and reduce cycle times.

System integration is straightforward via the SERCOS interface, enabling deterministic, noise-immune communication with CNC systems and higher-level controllers. Analogue and digital speed set-point options provide additional flexibility for legacy machine integration or specialized automation tasks. The controller’s standardized mounting dimensions and plug-and-play commissioning module reduce setup time and minimize downtime during upgrades. Target applications include CNC machining centers, precision grinders, automated lathes, and other industrial systems requiring high-precision spindle drive technology and seamless integration within Bosch Rexroth Indramat automation architectures.