RAC 2.3-200-460-LQ0-W1 Bosch Rexroth Indramat
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MPN: R911270421
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The Bosch Rexroth Indramat RAC 2.3-200-460-LQ0-W1 is an AC main spindle drive controller from the RAC Spindle Drive Controllers series. It operates at a rated current of 200 Amps with a connection voltage of 3 x AC 400 V, 50 Hz, plus or minus 15 percent, or 3 x AC 460 V. The unit uses an internal blower for cooling and offers speed command via a SERCOS interface with X4 optical waveguide terminals.
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Product Description:
The RAC 2.3-200-460-LQ0-W1 is part of the Bosch Rexroth Indramat RAC Spindle Drive Controllers series. It is used in machining centers to regulate spindle motion, converting CNC commands into controlled motor torque and speed for cutting, milling, and drilling operations. Closed-loop control helps the spindle hold commanded speed during tool engagement and rapid changes in load. Stable regulation is especially useful when the machine shifts between roughing passes, finishing passes, and tool changes, because spindle behavior needs to remain predictable throughout the cycle. This supports consistent cutting conditions on automated equipment that runs varied spindle loads across repeated production steps.
The controller is rated for 200 A of output current, so the connected spindle motor can draw high dynamic current without immediate protective shutdown. Its mains input accepts 3 x AC 400 V or 3 x AC 460 V, which supports factory supplies that vary within the stated tolerance. Temperature rise inside the housing is managed by a built-in air blower that moves air across heat-sensitive components. Command and diagnostic data pass through X4 optical waveguides, while velocity setpoints are received over the SERCOS interface for real-time fiber-optic communication with the control system. Electrical isolation in the communication path helps the drive operate reliably around high-power spindle circuits and switching noise.
The drive is Series 2 and Version 3. It is supplied without an additional bleeder, so excess regenerative energy must be handled by the internal circuitry or by an external resistor at the cabinet level. Classified as an AC main spindle drive controller, the unit is intended for high-speed spindle applications where constant surface speed and quick acceleration are important to cut quality. It also supports machines that must maintain stable rotation as tool engagement, material load, and commanded speed change during operation.
Frequently Asked Questions about RAC 2.3-200-460-LQ0-W1:
Q: How is the RAC 2.3-200-460-LQ0-W1 spindle drive controller cooled?
A: The RAC 2.3-200-460-LQ0-W1 operates using an internal blower and built-in fan for efficient cooling.
Q: What rated input voltage does the RAC 2.3-200-460-LQ0-W1 support?
A: This spindle drive controller has a rated connection voltage of 3 x AC 400 V at 50 Hz, with a tolerance of ±15%, or 3 x AC 460 V.
Q: What is the rated current capacity of the RAC 2.3-200-460-LQ0-W1 controller?
A: The RAC 2.3-200-460-LQ0-W1 spindle drive controller provides a maximum rated current of 200 A.
Q: What type of speed command interface is available on the RAC 2.3-200-460-LQ0-W1?
A: The speed command for this controller is managed via a SERCOS interface.
Q: What kind of interface terminal is provided on the RAC 2.3-200-460-LQ0-W1 spindle drive controller?
A: This model uses the X4 interface terminal with optical waveguides for connectivity.
