RAC 2.3-200-460-LP0-W1 Bosch Rexroth Indramat
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MPN: R911256148
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The Bosch Rexroth Indramat RAC 2.3-200-460-LP0-W1 is an AC main spindle drive controller from the RAC Spindle Drive Controllers series. It features a rated connection voltage of 3 x AC 400 V or 3 x AC 460 V and operates with a rated current of 200 Amps. This controller provides internal blower cooling and supports high-resolution INDRAMAT encoder feedback, with spindle speed commands over the SERCOS interface.
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Product Description:
The Bosch Rexroth Indramat RAC 2.3-200-460-LP0-W1 is an AC main spindle drive controller in the RAC Spindle Drive Controllers series. It serves as the central power and control stage for high-speed machining spindles, supplying regulated three-phase energy and closed-loop velocity commands to match the demands of CNC tools and other automated production equipment. In spindle applications, the controller regulates motor response so commanded speed changes remain stable during cutting, drilling, and milling cycles. Because the drive sits between the CNC and the motor, it must react quickly to changing load conditions without interrupting the machining process. Velocity setpoints reach the controller over the SERCOS interface, ensuring deterministic fiber-optic communication with numerically controlled hosts.
It delivers a maximum continuous output of 200 A, allowing the connected spindle motor to draw high magnetizing and acceleration currents without derating. This current capacity supports demanding startup and load-change conditions common in machine-tool duty. The incoming supply may be either 3 x AC 400 V, 50 Hz, ±15%, or 3 x AC 460 V, giving flexibility for European and North American mains. Heat generated by the power section is removed by a built-in fan, so the unit can be installed in cabinets that lack external ducting. To maintain signal integrity on the high-speed link, diagnostic and drive status data leave the housing through the X4 optical waveguide plug set.
The power section operates without an additional bleeder, so external resistor networks are needed only when regeneration exceeds internal capacity. For enhanced positioning accuracy, the controller provides an additional encoder input for spindle feedback that accepts data from a high-resolution INDRAMAT encoder, allowing fine rotational monitoring during rigid tapping or contour milling. This feedback path supports spindle tasks that depend on accurate angular alignment between the tool and the workpiece. The unit is Version 3, and it is paired with the series 2 power stage so parameter sets match the current SERCOS telegram format and cooling layout.
Frequently Asked Questions about RAC 2.3-200-460-LP0-W1:
Q: What is the rated current of the RAC 2.3-200-460-LP0-W1 spindle drive controller?
A: The RAC 2.3-200-460-LP0-W1 spindle drive controller operates with a rated current of 200 A.
Q: How is the RAC 2.3-200-460-LP0-W1 cooled during operation?
A: This drive controller features an internal blower with a built-in fan for cooling.
Q: What are the rated connection voltage options for the RAC 2.3-200-460-LP0-W1?
A: It supports a rated connection voltage of 3 x AC 400 V at 50 Hz, +/-15% or 3 x AC 460 V.
Q: Which interface does the RAC 2.3-200-460-LP0-W1 use for speed command?
A: The speed command interface on this model is SERCOS.
Q: Does the RAC 2.3-200-460-LP0-W1 have an additional encoder input for spindle feedback?
A: An additional encoder input is included for spindle feedback on this controller.
