RAC 2.2-200-460-A0I-W1 Bosch Rexroth Indramat
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MPN: R911247515
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The Bosch Rexroth Indramat RAC 2.2-200-460-A0I-W1 is an AC main spindle drive controller from the RAC Spindle Drive Controllers series. It features an internal blower for cooling and provides a rated connection voltage of 3 x AC 400 V at 50 Hz or 3 x AC 460 V. The controller delivers a rated current of 200 Amps and includes an incremental encoder output with a 9-pole X4 terminal interface.
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Product Description:
The RAC 2.2-200-460-A0I-W1 is an AC main spindle drive controller produced by Bosch Rexroth Indramat as part of the RAC Spindle Drive Controllers series. Acting as the interface between the mains supply and a high-speed spindle motor, it regulates current, monitors feedback, and delivers analog velocity commands to machine-tool spindles used in milling, drilling, or grinding stations. By combining power conversion and control logic in one housing, the drive simplifies cabinet wiring and supports coordinated automation with numerical control systems. In machine-tool service, it helps manage spindle response during speed changes and varying load conditions so cutting processes remain stable through repeated operating cycles.
It operates from a 3 x AC 400 V, 50 Hz, ±15%, or 3 x AC 460 V three-phase supply, so one model can serve both European and North American plants without transformer adaptation. The bus bars and semiconductor bridge are rated for a continuous output of 200 A, enabling direct connection to large-frame asynchronous spindle motors. Cooling is handled by a built-in fan, so heat is removed without external ducting. The speed reference enters through an analog ±10 V input, allowing standard CNC velocity outputs to be connected directly. Position information can be retransmitted through an incremental encoder output, and command and diagnostic pins are grouped on connector X4 with 9 poles to simplify harness fabrication. This arrangement allows the drive to exchange reference and feedback signals without requiring a separate interface module.
The unit ships without an additional bleeder, so excess DC-link energy must be dissipated externally during rapid deceleration. It is also supplied without an additional encoder input, relying on the spindle-mounted sensor for closed-loop control. This layout suits installations that already use external braking hardware and a direct spindle feedback path. The controller is Version 2 in the series 2 generation, keeping the product aligned with that revision of the platform.
Frequently Asked Questions about RAC 2.2-200-460-A0I-W1:
Q: What cooling method is used in the RAC 2.2-200-460-A0I-W1 spindle drive controller?
A: The RAC 2.2-200-460-A0I-W1 uses a built-in fan for internal cooling.
Q: What rated supply voltage does the RAC 2.2-200-460-A0I-W1 require?
A: This controller operates with a rated connection voltage of 3 x AC 400 V at 50 Hz (±15%) or 3 x AC 460 V.
Q: What speed command input does the RAC 2.2-200-460-A0I-W1 accept?
A: It supports an analogue speed command of +/-10 V.
Q: What type of interface terminal is included on the RAC 2.2-200-460-A0I-W1?
A: The interface terminal provided is X4 with 9 poles.
Q: What is the rated current capacity of the RAC 2.2-200-460-A0I-W1?
A: The rated current for this spindle drive controller is 200 A.
