RAC 2.3-150-460-A00-Z1 Bosch Rexroth Indramat
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MPN: R911270243
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The Bosch Rexroth Indramat RAC 2.3-150-460-A00-Z1 is an AC main spindle drive controller from the RAC Spindle Drive Controllers series. It features an internal blower for cooling, operates at a rated connection voltage of 3 x AC 400 V, 50 Hz, plus or minus 15 percent, or 3 x AC 460 V, and delivers a rated current of 150 Amps. The unit comes with an additional bleeder and supports an analogue speed command of plus or minus 10 Volts.
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Product Description:
The Bosch Rexroth Indramat RAC 2.3-150-460-A00-Z1 is an AC main spindle drive controller from the RAC Spindle Drive Controllers series. It is designed to govern high-power spindle motors used in machining centers, grinders, and turning equipment. In machine tools, it serves as the power and regulation stage between the mains supply, the CNC command path, and the spindle motor. By modulating voltage and frequency in real time, the drive keeps spindle speed aligned with CNC commands and compensates for tooling loads, chatter, and inertia changes during metal-cutting processes. This helps the spindle maintain steady operation during speed changes, load peaks, and repetitive machining cycles.
Thermal management is handled by a built-in blower, eliminating the need for external cabinet ducting and moving air directly across internal heat-producing components. The power section accepts a mains supply of 3 x AC 400 V, 50 Hz, ±15%, or 3 x AC 460 V and routes it through IGBT bridges rated for 150 A of continuous motor current. A differential reference of analog (±10 V) provides the primary speed command, allowing a full positive and negative setpoint range without digital delay. Control and status signals terminate on connector X4 with 9 poles, while the DC link includes a resistor bank with an additional bleeder for controlled energy discharge during braking and fault shutdowns. These features support rapid spindle acceleration and deceleration during tool changes and other fast operating transitions.
The unit is configured without an additional encoder input, so secondary feedback devices are not supported. The unit is an AC Main Spindle Drive Controller and focuses on torque and velocity loops, while position interpolation remains with the CNC. Its production release is version 3, and the Series 2 mounting footprint remains unchanged. Typical operating modes include constant surface speed, rigid tapping, and contouring where stable torque response is required.
Frequently Asked Questions about RAC 2.3-150-460-A00-Z1:
Q: What is the rated current supported by the RAC 2.3-150-460-A00-Z1 spindle drive controller?
A: The RAC 2.3-150-460-A00-Z1 spindle drive controller supports a rated current of 150 A for demanding applications.
Q: How is the RAC 2.3-150-460-A00-Z1 spindle drive controller cooled?
A: This model includes an internal blower and built-in fan for effective cooling.
Q: What type of interface terminal does the RAC 2.3-150-460-A00-Z1 use?
A: The interface terminal for this controller is designated as X4 with 9 poles for connectivity.
Q: What is the rated connection voltage for the RAC 2.3-150-460-A00-Z1 controller?
A: The RAC 2.3-150-460-A00-Z1 operates with a rated connection voltage of 3 x AC 400 V, 50 Hz, +/-15% or 3 x AC 460 V.
Q: Does the RAC 2.3-150-460-A00-Z1 spindle drive controller include an additional bleeder?
A: An additional bleeder is included in this model to assist with safe energy dissipation during operation.
