Product Description:

The RAC 2.2-200-460-L00-W1 is manufactured by Bosch Rexroth Indramat and belongs to the RAC Spindle Drive Controllers series. It is an AC main spindle drive controller for high-speed spindle motors used in industrial automation. The unit regulates three-phase power to shape the torque and speed profile required by machining and forming processes. It also exchanges control information with higher-level motion systems through fiber-optic links, allowing coordinated spindle behavior in machining centers, forming lines, and similar equipment.

This controller accepts a line supply of 3 x AC 400 V, 50 Hz, +/-15% or 3 x AC 460 V, allowing operation on common European and North American mains without an autotransformer. The power section is dimensioned for a continuous output of 200 A, so it can drive large-frame synchronous or induction spindles without current derating under nominal conditions. Thermal energy is expelled by a built-in blower, eliminating the need for external ducting and helping maintain stable internal temperatures during sustained spindle operation. Velocity commands reach the control electronics over the SERCOS interface, which provides deterministic cycle times for tight speed loops. Feedback and diagnostic data are routed to the higher-level CNC through the X4 optical waveguide terminal, supporting electromagnetic immunity when the cabinet houses high-current switching devices.

Mechanical braking energy is dissipated in the base electronics only because the unit is supplied without an additional bleeder. Position refinement hardware is minimized because the drive is also delivered without an additional encoder input, so it relies on the primary spindle encoder rather than a separate auxiliary feedback channel. It is classified as an AC Main Spindle Drive Controller, which suits applications that require ramp-profile control and spindle-oriented operating behavior. The hardware build is released as Version 2 within Series 2.