RAC 2.3-200-460-L00-W1 Bosch Rexroth Indramat
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MPN: R911261186
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The Bosch Rexroth Indramat RAC 2.3-200-460-L00-W1 is an AC main spindle drive controller from the RAC Spindle Drive Controllers series. It features a rated current of 200 Amps and supports connection voltages of 3 x AC 400 V at 50 Hz or 3 x AC 460 V. The unit utilizes an internal blower for cooling and communicates via a SERCOS interface for speed commands.
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Product Description:
The RAC 2.3-200-460-L00-W1 is an AC main spindle drive controller produced by Bosch Rexroth Indramat and supplied as part of the RAC Spindle Drive Controllers series. It regulates high-power spindle motors in CNC machining centers and other automated equipment, providing closed-loop speed control coordinated by a higher-level motion system. Within a multi-axis rack, the unit converts three-phase supply power into controlled output for synchronous or induction spindles, supporting rapid acceleration and precise surface finish requirements. This control behavior helps maintain spindle speed during changing cutting loads and supports repeatable machining results.
The controller accepts a supply of 3 x AC 400 V, 50 Hz, +/-15% or 3 x AC 460 V, so both European and North American plant voltages are covered without transformer adaptation. Its continuous output capability reaches 200 A, allowing it to drive large-frame spindles during heavy roughing cuts without current foldback. Heat generated by the IGBT bridge is removed by an internal blower. This built-in fan channels cabinet air across the heat sink, eliminating the need for an external liquid loop. Command and diagnostic traffic travel through X4 optical waveguides, which isolate the electronics from electrical noise and allow long fiber runs inside modular machine tools. The speed setpoint is delivered through the SERCOS interface, enabling cycle-synchronous speed updates alongside axis feedback on the same fiber ring.
Because the unit is supplied without an additional bleeder, braking energy must be absorbed by the spindle motor or by an external resistor on the shared DC link. It is also shipped without an additional encoder input, so speed and position are returned through the existing SERCOS fiber rather than a secondary incremental line. The product is Series 2 and Version 3. These identifiers indicate the product generation used by this drive controller.
Frequently Asked Questions about RAC 2.3-200-460-L00-W1:
Q: What voltage supply does the RAC 2.3-200-460-L00-W1 spindle drive controller support?
A: The RAC 2.3-200-460-L00-W1 operates with a rated connection voltage of 3 x AC 400 V, 50 Hz, +/-15% or 3 x AC 460 V.
Q: How is the RAC 2.3-200-460-L00-W1 spindle drive controller cooled?
A: This model is equipped with an internal blower and built-in fan for cooling.
Q: What is the rated current of the RAC 2.3-200-460-L00-W1 controller?
A: The RAC 2.3-200-460-L00-W1 has a rated current of 200 A for spindle drive applications.
Q: What interface is used for speed command on the RAC 2.3-200-460-L00-W1?
A: This spindle drive controller uses the SERCOS interface for speed command communication.
Q: What type of interface terminal does the RAC 2.3-200-460-L00-W1 use?
A: The interface terminal for this model is X4, accommodating optical waveguides.
