RAC 4.1-300-460-L00-W1

The RAC 4.1-300-460-L00-W1, Bosch Rexroth Indramat, RAC Spindle Drive Controllers unit provides high-precision digital control for 1MB asynchronous frameless spindle motors. It delivers a continuous motor output of 52 to 93 kW at the output shaft and supports variable-speed operation up to its design limits. Integrated mains connection and emergency shutdown features ensure safe and reliable operation under demanding conditions. As a programmable servo-axis in a position control loop, it delivers deterministic motion and exceptional dynamic response.

Designed as an AC Main Spindle Drive Controller, the module accepts a Rated Connection Voltage of 3 x AC 400 V, 50 Hz, ±15% or 3 x AC 460 V and supplies a Rated Current of 300 A without additional bleeder circuitry. Its Internal Blower/built-in fan cooling maintains thermal stability, while the sealed housing meets industrial ambient requirements. Connectivity is handled through Interface Terminal X4 with optical waveguides, and all speed and position feedback is carried over the SERCOS interface. A Speed Set-Point input of 10 V provides fine resolution, and the drive operates without an Additional Encoder Input or extra synchronization channels. Version 1 within Series 4 ensures consistent firmware and hardware compatibility across installations.

Integrators benefit from straightforward cabinet mounting and front-access terminal blocks that simplify field wiring and maintenance. The tight integration of safety shutdown and thermal monitoring functions enhances system reliability and reduces auxiliary component count. With global shipping and a one-year warranty, the RAC 4.1-300-460-L00-W1 drives critical spindle applications in machining centers, mill-turn machines, and high-speed drilling equipment with proven robustness and precision.