RAC 2.3-200-460-A0I-W1 Bosch Rexroth Indramat
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MPN: R911256143
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The Bosch Rexroth Indramat RAC 2.3-200-460-A0I-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 a connection voltage of 3-phase AC 400 V at 50 Hz or 3-phase AC 460 V. The unit includes an incremental encoder output and uses internal blower cooling.
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Product Description:
The RAC 2.3-200-460-A0I-W1 is an AC main spindle drive controller produced by Bosch Rexroth Indramat and assigned to the RAC Spindle Drive Controllers series. Within an automation cell, it governs the torque and speed of high-power spindle motors, providing closed-loop control for cutting, grinding, or drilling heads that demand rapid acceleration and precise velocity regulation. This type of control helps the spindle maintain stable speed during load changes and supports repeatable operation in machine tools. Fast response to command changes also helps keep the spindle behavior consistent during engagement, deceleration, and speed correction.
This unit draws its power from a three-phase supply of 3 × AC 400 V, 50 Hz, ±15% or 3 × AC 460 V, so it can be wired to either European or North American plant mains. The controller delivers a continuous output of 200 A, giving sufficient current headroom for large-frame induction or synchronous spindles. Thermal energy is removed by an internal blower, and the built-in fan moves air directly across heat-generating components for cabinet installation without extra ducting. Speed commands arrive as an analog (±10 V) reference, a standard signal that simplifies interfacing with legacy CNCs and PLCs. All low-voltage control wiring lands on the 9-pole X4 connector, grouping enable lines, interlocks, and monitor signals in one plug to reduce panel clutter.
The drive is Version 3 and uses series 2 hardware. It is equipped with an incremental encoder output, so spindle feedback can be forwarded to auxiliary devices that need a speed-related or position-related signal. The unit has no additional bleeder, so regenerated energy must be handled by the standard internal resistor or by an external solution. It also has no additional encoder input, which means the controller accepts only the primary encoder channel. The omission of extra option boards keeps the layout simpler while preserving the core current-regulated spindle control functions.
Frequently Asked Questions about RAC 2.3-200-460-A0I-W1:
Q: What type of speed command interface does the RAC 2.3-200-460-A0I-W1 support?
A: The RAC 2.3-200-460-A0I-W1 features an analogue speed command interface supporting a range of +/- 10 V.
Q: How is the RAC 2.3-200-460-A0I-W1 spindle drive controller cooled?
A: This model is designed with an internal blower and built-in fan for cooling, ensuring efficient thermal management without external equipment.
Q: What is the rated connection voltage for the RAC 2.3-200-460-A0I-W1?
A: The rated connection voltage for this controller is 3 x AC 400 V at 50 Hz (+/-15%) or 3 x AC 460 V, offering flexibility for different power systems.
Q: What type of additional interface is included on the RAC 2.3-200-460-A0I-W1?
A: This controller provides an incremental encoder output as its additional interface.
Q: What is the rated current capacity of the RAC 2.3-200-460-A0I-W1 spindle drive controller?
A: The RAC 2.3-200-460-A0I-W1 has a rated current of 200 A, supporting high-power spindle operations.
