RAC 2.3-200-460-A0S-W1 Bosch Rexroth Indramat
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MPN: R911277360
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The Bosch Rexroth Indramat RAC 2.3-200-460-A0S-W1 is an AC main spindle drive controller belonging to the RAC Spindle Drive Controllers series. It operates with a rated connection voltage of either 3 x AC 400 V at 50 Hz or 3 x AC 460 V, and it has a rated current of 200 Amps. The controller is equipped with an internal blower for cooling, a serial RS 232-C interface, and an X4 interface terminal with 9 poles.
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Product Description:
The RAC 2.3-200-460-A0S-W1 spindle drive controller is produced by Bosch Rexroth Indramat and belongs to the RAC Spindle Drive Controllers series. As an AC main spindle drive controller, it supplies regulated power and closed-loop control to high-speed spindle motors used in CNC machining centers and other automated tooling systems. By coordinating torque, speed, and acceleration from a central cabinet position, the unit forms the interface between the plant line supply and the spindle motor, allowing precise speed regulation and rapid tool changes in industrial automation. This arrangement supports stable spindle behavior during speed changes, cutting cycles, and commanded reversals.
On the input side, the controller accepts a three-phase supply of 3 x AC 400 V, 50 Hz, ±15%, or 3 x AC 460 V, allowing connection without an external transformer. When operating at full load, it can deliver a continuous current of 200 A to the connected spindle motor, which sets the maximum continuous torque available. Thermal management is handled by an internal blower, so cabinet air circulates through the heat sink without additional ducting. Setup and diagnostics are handled through the integrated RS-232-C serial interface, while field wiring lands on the 9-pole X4 terminal block to keep control and power signals separate.
In standard configuration, the drive is supplied without an additional bleeder, so regenerated energy must be absorbed by the DC bus or an external resistor bank during heavy deceleration. It is also delivered without an additional encoder input, so speed feedback is expected on the primary spindle encoder channel. That arrangement keeps the feedback path simple and suits applications that use the standard spindle feedback connection. Speed reference arrives as an analog (±10 V) signal, allowing direct linkage to analog outputs on CNC controllers. The controller is Version 3.
Frequently Asked Questions about RAC 2.3-200-460-A0S-W1:
Q: What is the rated current of the RAC 2.3-200-460-A0S-W1 spindle drive controller?
A: This model provides a rated current capacity of 200 A for main spindle operations.
Q: What connection voltage is required for the RAC 2.3-200-460-A0S-W1 controller?
A: The RAC 2.3-200-460-A0S-W1 operates on either 3 x AC 400 V, 50 Hz (±15%) or 3 x AC 460 V.
Q: How is speed commanded on the RAC 2.3-200-460-A0S-W1 controller?
A: The drive uses analogue speed command signals within a +/- 10 V range.
Q: What cooling method is used in the RAC 2.3-200-460-A0S-W1 drive controller?
A: Cooling is handled by an internal blower with a built-in fan in this unit.
Q: What kind of additional interface is included in the RAC 2.3-200-460-A0S-W1 controller?
A: The RAC 2.3-200-460-A0S-W1 features a serial RS 232-C interface for additional connectivity.
