RAC 3.5-100-460-L00-W1-220

The Bosch Rexroth Indramat RAC 3.5-100-460-L00-W1-220 from the RAC Spindle Drive Controllers series is an advanced AC Main Spindle Drive Controller engineered for high-performance machine tool applications. This controller operates on a rated connection voltage of 3 x AC 400 V, 50 Hz, ±15% or 3 x AC 460 V and delivers a continuous rated current of 100 A to drive precision spindles reliably. Communication with higher-level control systems is handled via a dedicated SERCOS interface for the speed command, while feedback loops and status signals transmit over the optical-waveguide interface terminal X4. Compact and robust, the RAC 3.5-100-460 model ensures tight speed regulation and real-time synchronization in demanding CNC and milling operations.

Cooling and auxiliary systems have been optimized for industrial longevity, featuring an internal blower / built-in fan that maintains the controller’s thermal equilibrium under full load. Control electronics are powered independently by a rated connection of AC 230 V, 50-60 Hz, isolating sensitive logic from main power fluctuations. To simplify maintenance and reduce downtime, this unit ships without additional bleeder circuitry and without additional encoder input, minimizing external components and potential points of failure. The precision 10 V speed set-point interface supports straightforward analog integration for legacy configurations, while modern automation networks benefit from its deterministic real-time bus.

Built on Series 3, Version 5, the RAC 3.5 series embodies Bosch Rexroth Indramat’s longstanding commitment to modularity and scalability. Its streamlined footprint allows direct rack-mount or cabinet installation, reducing wiring complexity with preconfigured optical-waveguide connectors. With its blend of ruggedized construction and cutting-edge SERCOS communication, the RAC 3.5-100-460-L00-W1-220 is an ideal choice for high-duty-cycle spindle drives where consistent torque, precise speed control, and minimal maintenance are essential.